{"type": "FeatureCollection", "features": [{"id": "10.1016/j.soilbio.2005.12.023", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-03-03", "title": "Earthworms (Millsonia Anomala, Megascolecidae) Do Not Increase Rice Growth Through Enhanced Nitrogen Mineralization", "description": "Earthworms have been shown to increase plant growth in 75% of the experiments that have compared plant growth in their presence and absence. However, the relative importance of the different mechanisms advanced to explain such a stimulatory effect has never been tested. In a laboratory experiment, we observed increased growth of rice plants in the presence of earthworms (Millsonia anomala, Megascolecidae) and demonstrated that enhanced nitrogen release (generally considered as the principal mechanism involved in earthworm positive effect on plants) was not responsible for this result: earthworms had the same stimulatory effect on plant growth (+20%) irrespective of whether the soil (provided with different amounts of mineral-N fertilizer) was either N-limited or N-saturated. We discuss alternative explanations for the observed variations in rice production.", "keywords": ["580", "Nitrogen gradient", "2. Zero hunger", "0106 biological sciences", "Mineralization", "nitrogen gradient", "04 agricultural and veterinary sciences", "01 natural sciences", "630", "Mechanisms affecting plant growth", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "Earthworm", "0401 agriculture", " forestry", " and fisheries", "mineralization", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "earthworm", "mechanisms affecting plant growth"]}, "links": [{"href": "https://hal-bioemco.ccsd.cnrs.fr/bioemco-00448744/file/Blouin_et_al.pdf"}, {"href": "https://doi.org/10.1016/j.soilbio.2005.12.023"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2005.12.023", "name": "item", "description": "10.1016/j.soilbio.2005.12.023", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2005.12.023"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-08-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.01.013", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-03-21", "title": "How Important Is N2o Production In Removing Atmospherically Deposited Nitrogen From Uk Moorland Catchments?", "description": "Nitrate (NO3\u2212) leaching due to anthropogenic nitrogen (N) deposition is an environmental problem in many parts of the UK uplands, associated with surface water acidification and affecting lake nutrient balances. It is often assumed that gaseous return of deposited N to the atmosphere as N2O through denitrification may provide an important sink for N. This assumption was tested for four moorland catchments (Allt a\u2019Mharcaidh in the Cairngorms, Afon Gwy in mid-Wales, Scoat Tarn in the English Lake District and River Etherow in the southern Pennines), covering gradients of atmospheric N deposition and surface water NO3\u2212 leaching, through a combination of field and laboratory experiments. Field measurements of N2O fluxes from static chambers with and without additions of NH4NO3 solution were carried out every 4 weeks over 1 yr. Wetted soil cores from the same field plots were used in experimental laboratory incubations at 5 and 15 \u00b0C with and without additions of NH4NO3 solution, followed by measurement of N2O fluxes. Field measurements showed that significant N2O fluxes occurred in only a very small number of plots with most showing zero values for much of the year. The maximum fluxes were 0.24 kg-N/ha/yr from unamended plots at the River Etherow and 0.49 kg-N/ha/yr from plots with NH4NO3 additions at the Allt a\u2019Mharcaidh. Laboratory incubation experiments demonstrated that large N2O fluxes could be induced by warming and NH4NO3 additions, with the top 5 cm of soil cores responsible for the largest fluxes, reaching 11.8 kg-N/ha/yr from a podsol at Scoat Tarn. Acetylene block experiments showed that while N2 was not likely to be a significant denitrification product in these soils, reduced N2O fluxes indicated that nitrification was an important source of N2O in many cases. A simple model of denitrification suggesting that 10\u201380% of net N inputs may be denitrified from non-agricultural soils was found to greatly over-estimate fluxes in the UK uplands. The proportion of deposition denitrified was found to be much closer to the IPCC suggested value of 1% with an upper limit of 10%. Interception of N deposition by vegetation may greatly reduce the net supply of N from this source, while soil acidification or other factors limiting carbon supply to soil microbes may prevent large denitrification fluxes even where NO3\u2212 supply is not limiting.", "keywords": ["denitrification", "nitrous oxide", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "nitrification", "6. Clean water", "moorlands", "nitrogen deposition", "acidification", "13. Climate action", "nitrate leaching", "nitrogen saturation", "0401 agriculture", " forestry", " and fisheries", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.01.013"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.01.013", "name": "item", "description": "10.1016/j.soilbio.2006.01.013", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.01.013"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-08-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.04.003", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-05-09", "title": "Storage And Dynamics Of Carbon And Nitrogen In Soil Physical Fractions Following Woody Plant Invasion Of Grassland", "description": "Abstract   Woody plant invasion of grasslands is prevalent worldwide. In the Rio Grande Plains of Texas, subtropical thorn woodlands dominated by C3 trees/shrubs have been replacing C4 grasslands over the past 150\u00a0yr, resulting in increased soil organic carbon (SOC) storage and concomitant increases in soil total nitrogen (STN). To elucidate mechanisms of change in SOC and STN, we separated soil organic matter into specific size/density fractions and determined the concentration of C and N in these fractions. Soils were collected from remnant grasslands (Time 0) and woody plant stands (ages 10\u2013130\u00a0yr). Rates of whole-soil C and N accrual in the upper 15\u00a0cm of the soil profile averaged 10\u201330\u00a0g\u00a0C\u00a0m\u22122\u00a0yr\u22121 and 1\u20133\u00a0g\u00a0N\u00a0m\u22122\u00a0yr\u22121, respectively, over the past 130\u00a0yr of woodland development. These rates of accumulation have increased soil C and N stocks in older wooded areas by 100\u2013500% relative to remnant grasslands. Probable causes of these increased pool sizes include higher rates of organic matter production in wooded areas, greater inherent biochemical resistance of woody litter to decomposition, and protection of organic matter by stabilization within soil macro- and microaggregates. The mass proportions of the free light fraction ( 250\u00a0\u03bcm) increased linearly with time following woody plant invasion of grassland. Conversely, the mass proportions of free microaggregate (53\u2013250\u00a0\u03bcm) and free silt+clay (", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.04.003"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.04.003", "name": "item", "description": "10.1016/j.soilbio.2006.04.003", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.04.003"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-11-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.04.003,", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-05-09", "title": "Storage And Dynamics Of Carbon And Nitrogen In Soil Physical Fractions Following Woody Plant Invasion Of Grassland", "description": "Abstract   Woody plant invasion of grasslands is prevalent worldwide. In the Rio Grande Plains of Texas, subtropical thorn woodlands dominated by C3 trees/shrubs have been replacing C4 grasslands over the past 150\u00a0yr, resulting in increased soil organic carbon (SOC) storage and concomitant increases in soil total nitrogen (STN). To elucidate mechanisms of change in SOC and STN, we separated soil organic matter into specific size/density fractions and determined the concentration of C and N in these fractions. Soils were collected from remnant grasslands (Time 0) and woody plant stands (ages 10\u2013130\u00a0yr). Rates of whole-soil C and N accrual in the upper 15\u00a0cm of the soil profile averaged 10\u201330\u00a0g\u00a0C\u00a0m\u22122\u00a0yr\u22121 and 1\u20133\u00a0g\u00a0N\u00a0m\u22122\u00a0yr\u22121, respectively, over the past 130\u00a0yr of woodland development. These rates of accumulation have increased soil C and N stocks in older wooded areas by 100\u2013500% relative to remnant grasslands. Probable causes of these increased pool sizes include higher rates of organic matter production in wooded areas, greater inherent biochemical resistance of woody litter to decomposition, and protection of organic matter by stabilization within soil macro- and microaggregates. The mass proportions of the free light fraction ( 250\u00a0\u03bcm) increased linearly with time following woody plant invasion of grassland. Conversely, the mass proportions of free microaggregate (53\u2013250\u00a0\u03bcm) and free silt+clay (", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.04.003,"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.04.003,", "name": "item", "description": "10.1016/j.soilbio.2006.04.003,", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.04.003,"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-11-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.04.039", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-05-23", "title": "Carbohydrate Dynamics In Particle-Size Fractions Of Sandy Spodosols Following Forest Conversion To Maize Cropping", "description": "Abstract   In southwest France, much of the forested land on sandy spodosols has been converted to continuous maize cropping in the last few decades. To evaluate the impacts of this change on soil organic matter properties, we compared total organic C and neutral and amino sugars content in whole soil and particle size separates of two forested, and five related sites that had been either clear-cut for 12 and 18 mo, or cultivated to maize for 4\u201322\u00a0yr. Soil carbohydrates accounted for 4\u20137% of the total organic C across all sites. Soil organic C contents of clear-cut and cultivated sites were only 57\u201379% of the average value measured in forested sites. Accordingly, carbohydrate content of clear-cut and cultivated sites were only 35\u201366% of the value in forested sites. Ordering the sites in a chronosequence indicated that both total organic C and carbohydrate contents decreased with an increase in time elapsed since clear-cutting and maize cultivation. The only exception was a partial recovery of carbohydrate content in the site that had been under continuous maize for 22\u00a0yr. The clay+silt fraction (0\u201350\u00a0\u03bcm) was enriched in carbohydrates, mainly of microbial origin, whereas the sand size fractions (50\u2013200 and 200\u20132000\u00a0\u03bcm) contained fewer carbohydrates which were mainly of plant origin. Monosaccharide analysis of particle size separates revealed significant differences in carbohydrate composition between sites. Relative to forested sites, the coarse and fine sand fractions in clear-cut and cultivated sites were depleted in carbohydrates and were relatively enriched in plant-derived carbohydrates. Carbohydrate content of the clay+silt fraction drastically decreased upon clear-cutting. Amino sugar content was consistently lower in clear-cut and cultivated sites than in forested sites, indicating that microbial populations were negatively affected by clear-cutting and cultivation. The fungal population appeared more sensitive than bacteria to these land-use changes as indicated by a greater decline in glucosamine than in muramic acid contents.", "keywords": ["PINE FOREST", "2. Zero hunger", "PODZOSOL", "550", "BIOCHIMIE", "CARBOHYDRATES", "PIN MARITIME", "04 agricultural and veterinary sciences", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "15. Life on land", "01 natural sciences", "PARTICLE SIZE SEPARATE", "SUCRES", "MAIZE CROPPING", "0401 agriculture", " forestry", " and fisheries", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "FRACTIONNEMENT GRANULOMETRIQUE", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.04.039"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.04.039", "name": "item", "description": "10.1016/j.soilbio.2006.04.039", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.04.039"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-09-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.05.017", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-07-11", "title": "Hydrolase Activities, Microbial Biomass And Bacterial Community In A Soil After Long-Term Amendment With Different Composts", "description": "Open AccessThe use of composts in agricultural soils is a widespread practice and the positive effects on soil and plants are known from numerous studies. However, there have been few attempts to compare the effects of different kinds of composts in one single study. The aim of this paper is to investigate to what extent and to which soil depth four major types of composts would affect the soil and its microbiota. In a crop-rotation field experiment, composts produced from (i) urban organic wastes, (ii) green wastes, (iii) manure and (iv) sewage sludge were applied at a rate equivalent to 175 kg N ha\u22121 yr\u22121 for 12 years. General (total organic C (Corg), total N (Nt), microbial biomass C (Cmic), and basal respiration), specific (enzyme activities related to C, N and P cycles), biochemical properties and bacterial genetic diversity (based on DGGE analysis of 16S rDNA) were analyzed at different depths (0\u201310, 10\u201320 and 20\u201330 cm). Compost treatment increased Corg at all depths from 11 g kg\u22121 for control soil to 16.7 g kg\u22121 for the case of sewage sludge compost. Total N increased with compost treatment at 0\u201310 cm and 10\u201320 cm depths, but not at 20\u201330 cm. Basal respiration and Cmic declined with depth, and the composts resulted in an increase of Cmic and basal respiration. Enzyme activities were different depend on the enzyme and among compost treatments, but in general, the enzyme activities were higher in the upper layers (0\u201310 and 10\u201320 cm) than in the 20\u201330 cm layer. Diversity of ammonia oxidizers and bacteria was lower in the control than in the compost soils. The type of compost had less influence on the composition of the microbial communities than did soil depth.", "keywords": ["PCR-DGGE", "2. Zero hunger", "Microbial activity", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Composts", "Hydrolase activities", "04 agricultural and veterinary sciences", "15. Life on land", "Bacterial communities", "6. Clean water", "Ammonia oxidizers", "12. Responsible consumption"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.05.017"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.05.017", "name": "item", "description": "10.1016/j.soilbio.2006.05.017", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.05.017"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-12-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.06.012", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-07-30", "title": "Diurnal, Seasonal, And Inter-Annual Variations Of N2o Fluxes From Native Semi-Arid Grassland Soils Of Inner Mongolia", "description": "Abstract   In order to investigate the diurnal, seasonal, and inter-annual variations of nitrous oxide (N2O) flux and associated microbiological mechanisms, in situ measurements of N2O Flux from unfertilized, ungrazed, and unirrigated semi-arid grassland soils in Inner Mongolia, northeast China were undertaken using a closed chamber technique from 1995 to 2003. In addition, laboratory experiments were carried out using the acetylene inhibition method (AIM) in 1998 and 2001. The results showed no significant linear relationship between soil moisture and diurnal N2O flux, or between N2O flux and temperature (i.e., temperature at 0\u201315\u00a0cm depth, temperature of surface soil, and temperature of inner chamber air). However, the results showed a significant influence of growing season on diurnal variations of N2O flux. N2O efflux was usually high in spring or summer, and low in winter. The mean total annual N2O fluxes was 0.73\u00b10.52\u00a0kg\u00a0N2O-N\u00a0ha\u22121\u00a0yr\u22121, with a coefficient of variation of annual N2O flux of 71.6%. Based on our estimates from 5\u00a0yr of data, the total N2O emission from all of the temperate grassland soils of China was approximately 0.21\u00a0Tg\u00a0N2O-N\u00a0yr\u22121, which was about 21% of the total global flux from temperate grassland soils. It was the distribution of effective rainfall, rather than precipitation intensity, that influenced seasonal and inter-annual variations of N2O flux. Our laboratory incubation study revealed that heterotrophic nitrification was the principal source of N2O in the studied soils.", "keywords": ["13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"], "contacts": [{"organization": "Rui Du, Gengchen Wang, Daren L\u00fc,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.06.012"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.06.012", "name": "item", "description": "10.1016/j.soilbio.2006.06.012", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.06.012"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-12-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.05.012", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-06-16", "title": "Quantification Of Priming And Co2 Emission Sources Following The Application Of Different Slurry Particle Size Fractions To A Grassland Soil", "description": "The highest emissions of CO2 from soils and most pronounced priming effect (PE) from soils generally occur immediately after slurry application. However, the influence of different particle size slurry fractions on net soil C respiration dynamics and PE has not been studied. Therefore, a slurry separation technique based on particle sizes was used in the present study. Six distinct fractions (>2000, 425\u20132000, 250\u2013425, 150\u2013250, 45\u2013150,  250 \u03bcm fractions. The overall contribution of slurry C to total CO2 emissions was higher in smaller slurry particle size treatments in the first days after application. The addition of the various slurry fractions to soil caused both significant positive and negative PEs on the soil organic matter mineralization. The timing and type (positive or negative) of PE depended on the slurry particle size. Clearly, farm based separation pre-treatment leading to two or more fractions with different particle sizes has also the potential to reduce or modify short-term CO2 emissions immediately after slurry application to soil.", "keywords": ["2. Zero hunger", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "12. Responsible consumption"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.05.012"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.05.012", "name": "item", "description": "10.1016/j.soilbio.2007.05.012", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.05.012"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-10-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.04.004", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-05-09", "title": "Organic Matter Turnover In Soil Physical Fractions Following Woody Plant Invasion Of Grassland: Evidence From Natural (13)C And (15)N", "description": "Soil physical structure causes differential accessibility of soil organic carbon (SOC) to decomposer organisms and is an important determinant of SOC storage and turnover. Techniques for physical fractionation of soil organic matter in conjunction with isotopic analyses (d 13 C, d 15 N) of those soil fractions have been used previously to (a) determine where organic C is stored relative to aggregate structure, (b) identify sources of SOC, (c) quantify turnover rates of SOC in specific soil fractions, and (d) evaluate organic matter quality. We used these two complementary approaches to characterize soil C storage and dynamics in the Rio Grande Plains of southern Texas where C3 trees/shrubs (d 13 C \u00bc\ufffd 27%) have largely replaced C4 grasslands (d 13 C \u00bc\ufffd 14%) over the past 100\u2013200 years. Using a chronosequence approach, soils were collected from remnant grasslands (Time 0) and from woody plant stands ranging in age from 10 to 130 years. We separated soil organic matter into specific size/density fractions and determined their C and N concentrations and natural d 13 C and d 15 N values. Mean residence times (MRTs) of soil fractions were calculated based on changes in their d 13 C with time after woody encroachment. The shortest MRTs (average \u00bc 30 years) were associated with all particulate organic matter (POM) fractions not protected within aggregates. Fine POM (53\u2013250mm) within macro- and microaggregates was relatively more protected from decay, with an average MRT of 60 years. All silt+clay fractions had the longest MRTs (average \u00bc 360 years) regardless of whether they were found inside or outside of aggregate structure. d 15 N values of soil physical fractions were positively correlated with MRTs of the same fractions, suggesting that higher d 15 N values reflect an increased degree of humification. Increased soil C and N pools in wooded areas were due to", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.04.004"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.04.004", "name": "item", "description": "10.1016/j.soilbio.2006.04.004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.04.004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-11-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.04.045", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-05-26", "title": "Bacterial Inoculants Affecting Nickel Uptake By Alyssum Murale From Low, Moderate And High Ni Soils", "description": "Metal hyperaccumulator plants like Alyssum murale have a remarkable ability to hyperaccumulate Ni from soils containing mostly insoluble Ni. We have shown some rhizobacteria increase the phytoavailability of Ni in soils, thus enhancing Ni accumulation by A. murale. Nine bacterial strains, originally isolated from the rhizosphere of A. murale grown in serpentine Ni-rich soil, were examined for their ability to solubilize Ni in different soils and for their effect on Ni uptake into Alyssum. Microbacterium oxydans AY509223; Rhizobium galegae AY509213; Microbacterium oxydans AY509219; Clavibacter xyli AY509236; Acidovorax avenae AY512827; Microbacterium arabinogalactanolyticum AY509225; M. oxydans AY509222; M. arabinogalactanolyticum AY509226 and M. oxydans AY509221 were added to low, moderate and high Ni-contaminated soils. M. oxydans AY509223 significantly increased Ni extraction by 10 mM Sr(NO3)2 from the high and medium soils and had no effect on Ni extraction from the low Ni soils. The other eight bacterial isolates significantly increased Ni extraction from all soils. There were no significant effects of bacterial inoculation on fresh and dry weight of A . murale shoots grown in the low and high Ni soils compared to an unamended control. M. oxydans AY509223 significantly increased Ni uptake of A. murale grown in the low, medium, and high soils by 36.1%, 39.3%, and 27.7%, respectively, compared with uninoculated seeds. M. oxydans AY509223 increased foliar Ni from the same soils from 82.9, 261.3 and 2829.3 mg kg 1 to 129.7, 430.7, and 3914.3 mg kg 1 , respectively, compared with uninoculated controls. These results show that bacteria are important for Ni", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "01 natural sciences", "6. Clean water", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.04.045"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.04.045", "name": "item", "description": "10.1016/j.soilbio.2006.04.045", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.04.045"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-09-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.06.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-07-30", "title": "Impact Of Harvesting And Logging Slash On Nitrogen And Carbon Dynamics In Soils From Upland Spruce Forests In Northeastern Ontario", "description": "Abstract   The potential impact of timber harvesting in the boreal forest on aquatic ecosystem water quality and productivity depends in part on the production of nutrients within the soil of the harvested catchment. Nitrogen supplied by organic matter decomposition is of particular interest because of the important role that N plays in biotic processes in surface waters, and in forest nutrition in general. Logging slash quality and input to the forest floor has the potential to influence N availability after harvest on clearcut sites. Net production of organic and inorganic-N and microbial biomass C and N concentrations were determined during a 90-day laboratory incubation at constant temperature and moisture. Incubated soils included F horizon and shallow mineral soil horizons (0\u20135\u00a0cm) from unharvested and full-tree harvested (2 and 12 growing seasons since harvest) boreal forest sites at the Esker Lakes Research Area (ELRA), in northeastern Ontario, Canada. In an ancillary experiment, black spruce foliage was added to unharvested forest floor material after 30 days during a 90-day laboratory incubation to simulate the influence of logging slash from full-tree harvesting on C and N dynamics. Twelve-year old clearcut F horizon material released on average 75 and 5 times more        NO     3    -      -N and 3 and 2 times as much inorganic-N than soil collected from unharvested and 2-year-old clearcuts, respectively. This increase in        NO     3    -      -N accumulation during the incubation was accompanied by decreases in both exchangeable        NH     4    +      -N and microbial biomass C and N levels. Net daily changes in microbial biomass N were significantly related to organic and inorganic-N accumulation or loss within the F horizon. Mineral soil release of inorganic-N was lower than release from the forest floor. Nitrate-nitrogen accumulation was lower, and        NH     4    +      -N accumulation was higher in mineral soil from unharvested sites when compared to 12-year-old clearcuts. Calculated harvest response ratios indicated that incubated mineral soil from the 12-year-old clearcut sites released significantly greater amounts of        NO     3    -      -N than 2-year-old clearcuts. Incorporation of black spruce needles into F horizon material reduced the production of organic and inorganic-N and increased microbial biomass N. Laboratory incubations of F horizon and shallow mineral soil from 12-year-old clearcuts suggested that these boreal soils have the capacity for increased inorganic-N production compared to uncut stands several years after harvesting. This has the potential to increase N availability to growing boreal forest plantations and increase N leaching due to greater        NO     3    -      -N levels in the forest soil.", "keywords": ["logging slash", "0106 biological sciences", "microbial biomass", "potential aquatic impacts", "net N mineralization", "immobilization", "0401 agriculture", " forestry", " and fisheries", "boreal forest", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.06.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.06.008", "name": "item", "description": "10.1016/j.soilbio.2006.06.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.06.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-01-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.07.010", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-09-01", "title": "Quantifying Soil Organic Carbon Fractions By Infrared-Spectroscopy", "description": "Abstract   Methods to quantify organic carbon (OC) in soil fractions of different stabilities often involve time-consuming physical and chemical treatments. The aim of the present study was to test a more rapid alternative, which is based on the spectroscopic analysis of bulk soils in the mid-infrared region (4000\u2013400\u00a0cm \u22121 ), combined with partial least-squares regression (PLS). One hundred eleven soil samples from arable and grassland sites across Switzerland were separated into fractions of dissolved OC, particulate organic matter (POM), sand and stable aggregates, silt and clay particles, and oxidation resistant OC. Measured contents of OC in each fraction were then correlated by PLS with infrared spectra to obtain prediction models. For every prediction model, 100 soil spectra were used in the PLS calibration and the residual 11 spectra for validation of the models. Correlation coefficients ( r ) between measured and PLS-predicted values ranged between 0.89 and 0.97 for OC in different fractions. By combining different fractions to one labile, one stabilized and one resistant fraction, predictions could even be improved (    r  =  0.98    , standard error of prediction=16%). Based on these statistical parameters, we conclude that mid-infrared spectroscopy in combination with PLS is an appropriate and very fast tool to quantify OC contents in different soil fractions.", "keywords": ["550", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.07.010"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.07.010", "name": "item", "description": "10.1016/j.soilbio.2006.07.010", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.07.010"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-01-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.08.011", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2006-09-19", "title": "Gross Nitrogen Transformations In Adjacent Native And Plantation Forest'S Of Subtropical Australia", "description": "Abstract   The impact of land-use change on soil nitrogen (N) transformations was investigated in adjacent native forest (NF), 53\u00a0y-old first rotation (1R) and 5\u00a0y-old second rotation (2R) hoop pine ( Araucaia cunninghamii ) plantations. The  15 N isotope dilution method was used to quantify gross rates of N transformations in aerobic and anaerobic laboratory incubations. Results showed that the land-use change had a significant impact on the soil N transformations. Gross ammonification rates in the aerobic incubation ranged between 0.62 and 1.78\u00a0mg N\u00a0kg \u22121 \u00a0d \u22121 , while gross nitrification rates ranged between 2.1 and 6.6\u00a0mg N\u00a0kg \u22121 \u00a0d \u22121 . Gross ammonification rates were significantly lower in the NF and the 1R soils than in the 2R soils, however gross nitrification rates were significantly higher in the NF soils than in the plantation soils. The greater rates of gross nitrification found in the NF soil compared to the plantation soils, were related to lower soil C:N ratios (i.e. more labile soil N under NF). Nitrification was found to be the dominant soil N transformation process in the contrasting forest ecosystems. This might be attributed to certain site conditions which may favour the nitrifying community, such as the dry climate and tree species. There was some evidence to suggest that heterotrophic nitrifiers may undertake a significant portion of nitrification.", "keywords": ["Environmental sciences", "Biological sciences", "Agricultural", "Soil sciences", "veterinary and food sciences", "550", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "630", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.08.011"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.08.011", "name": "item", "description": "10.1016/j.soilbio.2006.08.011", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.08.011"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-02-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.08.003", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:37Z", "type": "Journal Article", "created": "2006-09-19", "title": "No, N2o, Ch4 And Co2 Fluxes In Winter Barley Field Of Japanese Andisol As Affected By N Fertilizer Management", "description": "The study was carried out at the experimental station of the Japan International Research Center for Agricultural Sciences to investigate gas fluxes from a Japanese Andisol under different N fertilizer managements: CD, a deep application (8\u00a0cm) of the controlled release urea; UD, a deep application (8\u00a0cm) of the conventional urea; US, a surface application of the conventional urea; and a control, without any N application. NO, N2O, CH4 and CO2 fluxes were measured simultaneously in a winter barley field under the maize/barley rotation. The fluxes of NO and N2O from the control were very low, and N fertilization increased the emissions of NO and N2O. NO and N2O from N fertilization treatments showed different emission patterns: significant NO emissions but low N2O emissions in the winter season, and low NO emissions but significant N2O emissions during the short period of barley growth in the spring season. The controlled release of the N fertilizer decreased the total NO emissions, while a deep application increased the total N2O emissions. Fertilizer-derived NO\u2013N and N2O\u2013N from the treatments CD, UD and US accounted for 0.20\u00b10.07%, 0.71\u00b10.15%, 0.62\u00b10.04%, and 0.52\u00b10.04%, 0.50\u00b10.09%, 0.35\u00b10.03%, of the applied N, respectively, during the barley season. CH4 fluxes from the control were negative on most sampling dates, and its net soil uptake was 33\u00b17.1\u00a0mg\u00a0m\u22122 during the barley season. The application of the N fertilizer decreased the uptake of atmospheric CH4 and resulted in positive emissions from the soil. CO2 fluxes were very low in the early period of crop growth while higher emissions were observed in the spring season. The N fertilization generally increased the direct CO2 emissions from the soil. N2O, CH4 and CO2 fluxes were positively correlated (P<0.01) with each other, whereas NO and CO2 fluxes were negatively correlated (P<0.05). The N fertilization increased soil-derived global warming potential (GWP) significantly in the barley season. The net GWP was calculated by subtracting the plant-fixed atmospheric CO2 stored in its aboveground parts from the soil-derived GWP in CO2 equivalent. The net GWP from the CD, UD, US and the control were all negative at \u2212243\u00b130.7, \u2212257\u00b128.4, \u2212227\u00b16.6 and \u2212143\u00b19.7\u00a0g\u00a0C\u00a0m\u22122 in CO2 equivalent, respectively, in the barley season.", "keywords": ["2. Zero hunger", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.08.003"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.08.003", "name": "item", "description": "10.1016/j.soilbio.2006.08.003", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.08.003"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-01-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.09.015", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2006-10-20", "title": "Do Earthworms Increase N2o Emissions In Ploughed Grassland?", "description": "Abstract   Earthworm activity has been reported to lead to increased production of the greenhouse gas nitrous oxide (N2O). This is due to emissions from worms themselves, their casts and drilosphere, as well as to general changes in soil structure. However, it remains to be determined how important this effect is on N2O fluxes from agricultural systems under realistic conditions in terms of earthworm density, soil moisture, tillage activity and residue loads. We quantified the effect of earthworm presence on N2O emissions from a pasture after simulated ploughing of the sod (\u2018grassland renovation\u2019) for different soil moisture contents during a 62-day mesocosm study. Sod (with associated soil) and topsoil were separately collected from a loamy Typic Fluvaquent. Treatments included low (L), medium (M) and high (H) moisture content, in combination with: only soil (S); soil+incorporated sod (SG); soil+incorporated sod+the anecic earthworm Aporrectodea longa (SGE). Nitrous oxide and carbon dioxide (CO2) fluxes were measured for 62\u00a0d. At the end of the incubation period, we determined N2O production under water-saturated conditions, potential denitrification and potential mineralization of the soil after removing the earthworms. Cumulative N2O and CO2 fluxes over 62\u00a0d from incorporated sod were highest for treatment HSGE (973\u00a0\u03bcg N2O-N and 302\u00a0mg CO2-C\u00a0kg\u22121 soil) and lowest for LSG (64\u00a0\u03bcg N2O-N and 188\u00a0mg CO2-C\u00a0kg\u22121 soil). Both cumulative fluxes were significantly different for soil moisture (p", "keywords": ["2. Zero hunger", "denitrification", "casts", "carbon", "permanent pastures", "04 agricultural and veterinary sciences", "15. Life on land", "fluxes", "6. Clean water", "nitrous-oxide emissions", "13. Climate action", "soil organic-matter", "community", "0401 agriculture", " forestry", " and fisheries", "denitrifying bacteria", "management"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.09.015"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.09.015", "name": "item", "description": "10.1016/j.soilbio.2006.09.015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.09.015"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-02-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.12.019", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-01-11", "title": "Invasion Of A Deciduous Forest By Earthworms: Changes In Soil Chemistry, Microflora, Microarthropods And Vegetation", "description": "Abstract   Ecosystems of northern North America existed without earthworm fauna until European settlers arrived and introduced European species. The current extent of invasion by some of these species, Lumbricus terrestris L., Octolasion tyrtaeum Savigny and Dendrobaena octaedra Savigny, into an aspen forest in the Canadian Rocky Mountains and the effects of the invasion on soil chemistry, microflora, soil microarthropods and vegetation were investigated. Densities of earthworm species, soil structure, plant coverage and abundance were determined along three transects starting at the edge of the forest. At locations with L. terrestris, litter was incorporated into the soil, and where O. tyrtaeum was present, organic layers were mixed with mineral soil layers. Organic layers disappeared almost entirely when both species occurred together. Carbon and nitrogen concentrations were reduced in organic layers in the presence of L. terrestris and O. tyrtaeum. Microbial biomass and basal respiration were reduced when L. terrestris and O. tyrtaeum were present, presumably due to resource competition and habitat destruction. Microarthropod densities and the number of microarthropod species were strongly reduced in the presence of O. tyrtaeum (\u221275% and \u221222%, respectively), probably through mechanical disturbances, increasing compactness of the soil and resource competition. The coverage of some plant species was correlated with earthworm abundance, but the coverage of others was not. Despite harsh climatic conditions, the invasion of boreal forest ecosystems by mineral soil dwelling earthworm species is proceeding and strongly impacts soil structure, soil chemistry, microorganisms, soil microarthropods and vegetation.", "keywords": ["13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.12.019"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.12.019", "name": "item", "description": "10.1016/j.soilbio.2006.12.019", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.12.019"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-05-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.12.036", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-02-09", "title": "Microbial Degradation Of Hydrolysable And Condensed Tannin Polyphenol-Protein Complexes In Soils From Different Land-Use Histories", "description": "Abstract   Polyphenols are capable of binding to proteins and form polyphenol\u2013protein complexes thus reducing the release of N from decomposing plant materials. The objective of this work was to test if under polyphenol-rich vegetations adapted microbial communities had developed capable of breaking down recalcitrant polyphenol\u2013protein complexes. Soils used for this investigation were from different 10-year-old tropical agricultural systems (maize, sugarcane plots and Gliricidia sepium or Peltophorum dasyrrachis woodlots) and natural systems (secondary forest and Imperata cylindrica grassland). TA (tannic acid, hydrolysable tannin), QUE (quebracho, condensed tannin), BSA (bovine serum albumin, protein) or TA/BSA and QUE/BSA polyphenol\u2013protein complexes were incubated at 28\u00a0\u00b0C in these soils. CO2-C and 13C evolution were periodically monitored and mineral N release, microbial biomass N and phospholipid fatty acid (PLFA) profiles measured at the end.  QUE was able to bind about 25% more protein than TA. In all systems the individual uncomplexed substrates were more easily degraded than the complexes. On average, net cumulative CO2-C evolution from TA/BSA complexes was more than 5 times higher than from QUE/BSA complexes, indicating higher C availability and/or lower protection capability of TA compared to QUE. However, net N release was higher from QUE/BSA than from TA/BSA probably due to their higher protein-binding capacity and associated larger degradation of partly unprotected protein as suggested by 13C-CO2 signatures. Microbial respiration patterns indicated that polyphenol complexes were initially degraded more quickly in the maize cropping system than in soils from under polyphenol-rich communities (Peltophorum and natural forest) but this pattern reversed with time. Long-term incubation of QUE/BSA complexes even caused a negative effect on microbial respiration in agricultural soils with low polyphenol contents (e.g. maize and sugarcane).  Incubation of polyphenol complexes in soil depressed microbial biomass N in maize, sugarcane, Imperata and forest systems and led to reduced soil pH. However, microbial biomass was increased under the polyphenol-rich vegetation of Peltophorum. The PLFA group 18:2w6,9 was highly enhanced by condensed tannin\u2013protein complexes additions as compared to control and hydrolysable polyphenol\u2013protein complexes in soils with high polyphenol contents. Polyphenol complexes increased the fungi:bacteria ratio in systems with a high polyphenol content, particularly with condensed tannin complexes. The results indicated that systems with a high polyphenol content favoured development of fungal communities that are highly adaptable to phenol-rich soil conditions and high acidity, particularly with regards to the more recalcitrant condensed tannin\u2013protein complexes.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.12.036"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.12.036", "name": "item", "description": "10.1016/j.soilbio.2006.12.036", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.12.036"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-07-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.01.022", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-02-27", "title": "Application Of Near Infrared Reflectance (Nir) And Fluorescence Spectroscopy To Analysis Of Microbiological And Chemical Properties Of Arctic Soil", "description": "Abstract   Applicability of near infrared reflectance (NIR) and fluorescence spectroscopic techniques was tested on highly organic arctic soil. Soil samples were obtained at a long-term climate change manipulation experiment at a subarctic fell heath in Abisko, northern Sweden. The ecosystem had been exposed to treatments simulating increasing temperature (open-top greenhouses), higher nutrient availability (NPK fertilization) and increasing cloudiness (shading cloths) for 15 years prior to the sampling. For each of the 72 samples from the 0 to 5\u00a0cm soil depth and 36 samples from the 5 to 10\u00a0cm depth, the wavelength range of 400\u20132500\u00a0nm (visible and near infrared spectrum) was scanned with a NIR spectrophotometer and fluorescence excitation-emission matrices (EEMs) were recorded with a spectrofluorometer.  Principal component analyses of the visible, NIR and fluorescence spectra clearly separated the treatments, which indicates that the chemical composition of the soil and its spectral properties had changed during the climate change simulation. Similarly to the results from the conventional analyses of soil chemical and microbiological properties, fertilization treatment posed strongest effects on the spectra. Partial least-squares (PLS) regression methods with cross-validation were used to analyse relationships between the spectroscopic data and the chemical and microbiological data derived from the conventional analyses. The fluorescence EEMs of the dried solid soil samples were moderately related to soil ergosterol content (correlation coefficient r=0.84), bacterial activity analysed by leucine incorporation technique (r=0.78) and total phospholipid fatty acid (PLFA) content (r=0.74), but in general fluorescence provided inferior predictions of the chemical and microbiological variables to NIR. NIR was highly related to soil organic matter content (r>0.9) and showed promising predictions of soil ergosterol content (r>0.9), microbial biomass C, microbial biomass P, and total PLFA contents (r=0.78\u20130.79).  These results suggest that especially NIR could be used to predict soil organic matter and fungal biomass. Since it is rapid and inexpensive, and requires little sample mass, it could be used as a \u2018quick and dirty\u2019 technique to estimate progression of the treatment responses in long-term ecosystem experiments, where extensive soil sampling is to be avoided.", "keywords": ["13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.01.022"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.01.022", "name": "item", "description": "10.1016/j.soilbio.2007.01.022", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.01.022"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-07-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2014.02.009", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:45Z", "type": "Journal Article", "created": "2014-02-26", "title": "Pyrogenic Carbon Additions To Soil Counteract Positive Priming Of Soil Carbon Mineralization By Plants", "description": "Abstract   Important due to both its role in fire-affected ecosystems, and also its proposed intentional production and application for carbon (C) management, pyrogenic organic matter (PyOM) is thought to contain very stable forms of C. However, the mechanisms behind its interactions with non-PyOM soil organic C (SOC) remain speculative, with studies often showing short-term positive and then long-term negative \u201cpriming effects\u201d on SOC decomposition after PyOM applications. Furthermore, studies of these interactions to date have been limited to systems that do not include plants. This study describes results from a 12-week greenhouse experiment where PyOM-SOC priming effects with and without plants were investigated using stable isotope partitioning. In addition, we investigated the optimal \u03b413C proxies for sources of SOC, PyOM, and plant-derived CO2 emissions. The two-factorial experiment included the presence or absence of corn plants and of 13C-labelled PyOM. In order to control for pH and nutrient addition effects from PyOM, its pH was adjusted to that of the soil and optimal nutrient and water conditions were provided to the plants. The \u03b413C of PyOM sub-components were significantly different. Significant losses of 0.4% of the applied PyOM-C occurred in the first week. We find evidence for a \u201cnegative priming\u201d effect of PyOM on SOC in the system (SOC losses are 48% lower with PyOM present), which occurred primarily during the first week, indicating it may be due to transient effects driven by easily mineralizable PyOM. Additionally, while the presence of corn plants resulted in significantly increased SOC losses (\u201cpositive priming\u201d), PyOM additions counteract this effect, almost completely eliminating net C losses either by decreasing SOC decomposition or increasing corn C additions to soil. This highlights the importance of including plants in studies of PyOM-SOC interactions.", "keywords": ["2. Zero hunger", "13. Climate action", "8. Economic growth", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Thea Whitman, Akio Enders, Johannes Lehmann,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2014.02.009"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2014.02.009", "name": "item", "description": "10.1016/j.soilbio.2014.02.009", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2014.02.009"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-06-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.09.030", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2006-11-01", "title": "Fast Turnover Of Low Molecular Weight Components Of The Dissolved Organic Carbon Pool Of Temperate Grassland Field Soils", "description": "Large amounts of low molecular weight (LMW;<250 Da) carbon (C) are lost from roots into the rhizosphere as a consequence of root turnover and exudation. Their rates of turnover after release into the soil remain poorly understood. We extracted soil solution from a temperate grassland Eutric Cambisol, isotopically labeled the glucose and amino acid components, and then re-injected the solution back into the soil. We followed the subsequent evolution of 14CO2 and incorporation of the LMW C into the soil microbial biomass or grasses for 48 h. The experiments were performed both on grazed and un-grazed swards in the field, and in the laboratory. In the field, we showed that glucose and amino acids had short half-lives (t1/2) in soil solution (t1/2=20\u201340 min), but that they persisted in soil microbes for much longer. A first-order double exponential model fitted the experimental data well and gave rate constant (k) values of 1.21\u20132.14 h\u22121 for k1 and 0.0025\u20130.0048 h\u22121 for k2. Only small amounts of the added 14C were recovered in plant biomass (<5% of total added to soil) indicating that plant roots are poor competitors for LMW dissolved organic C (DOC) in comparison to soil microorganisms. The first phase of glucose and amino acid mineralization in the laboratory was slower (t1/2=40\u201360 min) than measured in the field reinforcing the importance of making flux measurements in situ. Whilst grazing stimulated below-ground respiration, it exerted only a small influence on the turnover of LMW DOC suggesting that the increase in respiration was due to increased root respiration and not turnover of soil organic matter (SOM). Our results suggest that some components of the LMW DOC pool are turned over extremely rapidly (ca. 4000 times annually).", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.09.030"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.09.030", "name": "item", "description": "10.1016/j.soilbio.2006.09.030", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.09.030"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-04-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.12.024", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-01-23", "title": "Microaggregate-Associated Carbon As A Diagnostic Fraction For Management-Induced Changes In Soil Organic Carbon In Two Oxisols", "description": "Abstract   Carbon stabilization by macroaggregate-occluded microaggregates (Mm) has been proposed as a principal mechanism for long-term soil organic carbon (SOC) sequestration in temperate alternative agricultural and (af)forested systems. The aim of this study was to evaluate the importance of the Mm fraction for long-term C stabilization in Oxisols and to validate its diagnostic properties for total SOC changes upon changes in land use. Soil samples were taken from the 0\u20135 and 5\u201320\u00a0cm soil layers of native forest vegetation (NV), conventional tillage (CT) and no-tillage (NT) systems at an experimental site near Passo Fundo and one near Londrina in Southern Brazil. After aggregate-size separations by wet-sieving, macroaggregate-occluded water-stable microaggregates (53\u2013250\u00a0\u03bcm) (Mm) were isolated from large (>2000\u00a0\u03bcm) and small (>250\u00a0\u03bcm) macroaggregates. Particulate organic matter located inside the Mm (intra-Mm-POM) and the mineral fraction ( \u22122 ) among different land use systems were always accompanied by parallel Mm-C stock differences. Though total SOC did not differ among land use systems in the 0\u201320\u00a0cm depth at both sites, Mm-C stocks were greater under NT compared to the CT treatment in the 0\u201320\u00a0cm depth at the Londrina site. We concluded that in these highly weathered tropical soils the Mm-C fraction is a more responsive fraction to management changes than total SOC and represents a diagnostic fraction for present as well as potential total SOC changes upon land-use change.", "keywords": ["2. Zero hunger", "C sequestration", "No-tillage", "0401 agriculture", " forestry", " and fisheries", "Microaggregates", "Forest", "04 agricultural and veterinary sciences", "Oxisols", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.12.024"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.12.024", "name": "item", "description": "10.1016/j.soilbio.2006.12.024", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.12.024"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-05-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.01.008", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-02-16", "title": "Soil Restoration In Semiarid Patagonia: Chemical And Biological Response To Different Compost Quality", "description": "Abstract   Restoration of soils burned by a wildfire using composted amendments of different origin (biosolids and municipal organic wastes) and final particle size (screened and unscreened) was studied after 6 and 12 months of application in a field trial in semiarid NW Patagonia. Composts were applied at 40\u00a0Mg\u00a0ha\u22121. A fertilized treatment with soluble N (100\u00a0kg\u00a0ha\u22121) and P (35\u00a0kg ha\u22121), and a non-treated control were also included. As indicators of soil response, chemical (electrical conductivity, pH, organic C, total N, extractable P), biological (potential microbial respiration, potential net N mineralization, N retained in microbial biomass) and physical (temperature and soil moisture) properties were evaluated. Plant soil cover was also estimated. Soil chemical and biological properties showed a high response to organic amendment addition, more evident after the wet season (12 months of application). Soil organic C, total N and extractable P increased significantly with biosolids composts (BC), and soil pH with municipal composts (MC). Potential microbial C respiration and net N mineralization were similar for both MC and BC, and significantly higher than in the control and the inorganic fertilized treatment; when calculated on C or N basis the highest values corresponded to MC. Results imply that in terms of organic C accretion, BC were more effective than MC due to higher amounts of total and recalcitrant C. Screened and unscreened composts did not differ significantly in their effects on soil properties. The increase of organic C with BC did not contribute to increase soil moisture, which was even higher in control plots after the wet season; higher plant cover and water consumption in amended plots could also explain this pattern. Inorganic fertilization enhanced higher plant cover than organic amendments, but did not contribute to soil restoration.", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Esteban Kowaljow, Mar\u00eda Julia Mazzarino, Mar\u00eda Julia Mazzarino,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.01.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.01.008", "name": "item", "description": "10.1016/j.soilbio.2007.01.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.01.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-07-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.02.001", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-03-13", "title": "Nitrogen Fertilization Reduces Diversity And Alters Community Structure Of Active Fungi In Boreal Ecosystems", "description": "Nitrogen (N) availability is increasing in many ecosystems due to anthropogenic disturbance. We used a nucleotide analog technique and sequencing of ribosomal RNA genes to test whether N fertilization altered active fungal communities in two boreal ecosystems. In decaying litter from a recently burned spruce forest, Shannon diversity decreased significantly with N fertilization, and taxonomic richness declined from 44 to 33 operational taxonomic units (OTUs). In soils from a mature spruce forest, richness also declined with N fertilization, from 67 to 52 OTUs. Fungal community structure in litter differed significantly with N fertilization, primarily because fungi of the order Ceratobasidiales increased in abundance. We observed similar changes in fungal diversity and community structure with starch addition to litter, suggesting that N fertilization may affect fungal communities by altering plant carbon inputs. These changes could have important consequences for ecosystem processes such as decomposition and nutrient mineralization.", "keywords": ["ribosomal genes", "0301 basic medicine", "nucleotide analog", "carbon", "04 agricultural and veterinary sciences", "15. Life on land", "nitrogen", "diversity", "03 medical and health sciences", "fertilization", "litter quality", "0401 agriculture", " forestry", " and fisheries", "fungi", "boreal forest", "community structure"]}, "links": [{"href": "https://escholarship.org/content/qt2rs399mh/qt2rs399mh.pdf"}, {"href": "https://doi.org/10.1016/j.soilbio.2007.02.001"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.02.001", "name": "item", "description": "10.1016/j.soilbio.2007.02.001", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.02.001"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-08-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.03.003", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-04-11", "title": "Responses Of Soil Organic Matter And Microorganisms To Freeze-Thaw Cycles", "description": "Abstract   Soil organic matter (SOM) biomarker methods were utilized in this study to investigate the responses of fungi and bacteria to freeze\u2013thaw cycles (FTCs) and to examine freeze\u2013thaw-induced changes in SOM composition and substrate availability. Unamended, grass-amended, and lignin-amended soil samples were subject to 10 laboratory FTCs. Three SOM fractions (free lipids, bound lipids, and lignin-derived phenols) with distinct composition, stability and source were examined with chemolysis and biomarker Gas Chromatography/Mass Spectrometry methods and the soil microbial community composition was monitored by phospholipid fatty acid (PLFA) analysis. Soil microbial respiration was also measured before and during freezing and thawing, which was not closely related to microbial biomass in the soil but more strongly controlled by substrate availability and quality. Enhanced microbial mineralization (CO2 flush), considered to be derived from the freeze\u2013thaw-induced release of easily decomposable organic matter from microbial cell lyses, was detected but quickly diminished with successive FTCs. The biomarker distribution demonstrated that free lipids underwent a considerable size of decrease after repeated FTCs, while bound lipids and lignin compounds remained stable. This observation indicates that labile SOM may be most influenced by increased FTCs and that free lipids may contribute indirectly to the freeze\u2013thaw-induced CO2 flush from the soil. PLFA analysis revealed that fungal biomass was greatly reduced while bacteria were unaffected through the lab-simulated FTCs. Microbial community shifts may be caused by freezing stress and competition for freeze\u2013thaw-induced substrate release. This novel finding may have an impact on carbon and nutrient turnover with predicted increases in FTCs in certain areas, because fungi and bacteria have different degradation patterns of SOM and the fungi-dominated soil community is considered to have a higher carbon storage capacity than a bacteria-dominated community.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.03.003"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.03.003", "name": "item", "description": "10.1016/j.soilbio.2007.03.003", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.03.003"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-08-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.03.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-04-11", "title": "Earthworm Activity As A Determinant For N2o Emission From Crop Residue", "description": "Earthworm activity may have an effect on nitrous oxide (N2O) emissions from crop residue. However, the importance of this effect and its main controlling variables are largely unknown. The main objective of this study was to determine under which conditions and to what extent earthworm activity impacts N2O emissions from grass residue. For this purpose we initiated a 90-day (experiment I) and a 50-day (experiment II) laboratory mesocosm experiment using a Typic Fluvaquent pasture soil with silt loam texture. In all treatments, residue was applied, and emissions of NO and carbon dioxide (CO2) were measured. In experiment I the residue was applied on top of the soil surface and we tested (a) the effects of the anecic earthworm species Aporrectodea longa (Ude) vs. the epigeic species Lumbricus rubellus (Hoffmeister) and (b) interactions between earthworm activity and bulk density (1.06 vs. 1.61 g cm(-3)). In experiment II we tested the effect of L. rubellus after residue was artificially incorporated in the soil. In experiment 1, N2O emissions in the presence of earthworms significantly increased from 55.7 to 789.1 mu g N2O-N kg(-1) soil (L. rubellus; p <0.001) or to 227.2 mu g N2O-N kg(-1) soil (A. longa, p <0.05). This effect was not dependent on bulk density. However, if the residue was incorporated into the soil (experiment II) the earthworm effect disappeared and emissions were higher (1064.2 mu g N2O-N kg(-1) soil). At the end of the experiment and after removal of earthworms, a drying/wetting and freezing/thawing cycle resulted in significantly higher emissions of NO and CO2 from soil with prior presence of L. rubellus. Soil with prior presence of L. rubellus also had higher potential denitrification. We conclude that the main effect of earthworm activity on N2O emissions is through mixing residue into the soil, switching residue decomposition from an aerobic and low denitrification pathway to one with significant denitrification and NO production. Furthermore, A. longa activity resulted in more stable soil organic matter than L. rubellus. (c) 2007 Elsevier Ltd. All rights reserved.", "keywords": ["2. Zero hunger", "aporrectodea-turgida", "carbon", "octolasion-tyrtaeum", "lumbricus-terrestris", "04 agricultural and veterinary sciences", "denitrification rates", "15. Life on land", "13. Climate action", "nitrous-oxide emission", "soil organic-matter", "0401 agriculture", " forestry", " and fisheries", "agricultural soils", "denitrifying bacteria", "management"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.03.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.03.008", "name": "item", "description": "10.1016/j.soilbio.2007.03.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.03.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-08-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.03.019", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-04-19", "title": "Earthworm Activity Affects Soil Aggregation And Organic Matter Dynamics According To The Quality And Localization Of Crop Residues - An Experimental Study (Madagascar)", "description": "Abstract   Soil organic matter (SOM) plays a central role in the functioning of ecosystems, and is beneficial from agronomic and from environmental point of view. Alternative cultural systems, like direct seeding mulch-based cropping (DMC) systems, enhance carbon (C) sequestration in agricultural soils and lead to an increase in soil macrofauna. This study aimed at evaluating in field mesocosms the effects of earthworms on SOM dynamics and aggregation, as influenced by residue quality and management.  In the highlands of Madagascar, buckets were filled with 2\u00a0mm-sieved clayey Inceptisol. The effects of earthworm addition (Pontoscolex corethrurus), residue addition (rice, soybean, and no addition), and localization of the residues (mulched or buried) were studied. After 5 months, soil from mesocosms with earthworms had significantly lower C concentration and higher proportion of large water-stable macroaggregates (>2000\u00a0\u03bcm) than those without earthworms, because of the production of large macroaggregates by earthworms. Earthworm effect on soil aggregation was greater with rice than with soybean residues. Casts (extracted from mesocosms with earthworms) were slightly enriched in C and showed significantly higher mineralization than the non-ingested soil (NIS), showing that at the time scale of our study, the carbon contained in the casts was not protected against mineralization. No difference in microbial biomass was found between casts and NIS.  Complementary investigations are necessary to assess long-term effects of earthworm addition on SOM dynamics, the conditions of occurrence of physical protection, and the impact of earthworms on the structure of the microbial community.", "keywords": ["P33 - Chimie et physique du sol", "Pontoscolex corethrurus", "[SDE] Environmental Sciences", "2. Zero hunger", "residue management", "microbial biomass", "carbon mineralization", "Carbon mineralization", "Direct seeding mulch-based cropping systems", "Microbial biomass", "Residue management", "P34 - Biologie du sol", "04 agricultural and veterinary sciences", "15. Life on land", "630", "carbon protection", "13. Climate action", "[SDE]Environmental Sciences", "Carbon protection", "0401 agriculture", " forestry", " and fisheries", "direct seeding mulch based cropping systems"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.03.019"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.03.019", "name": "item", "description": "10.1016/j.soilbio.2007.03.019", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.03.019"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-08-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.04.023", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-05-31", "title": "Can A Mixed Stand Of N-2-Fixing And Non-Fixing Plants Restrict N2o Emissions With Increasing Co2 Concentration?", "description": "Abstract   Initial effects of elevated atmospheric CO 2  concentration on N 2 O fluxes and biomass production of timothy/red clover were studied in the laboratory. The experimental design consisted of two levels of atmospheric CO 2  (ca. 360 and 720\u00a0\u03bcmol\u00a0CO 2 \u00a0mol \u22121 ) and two N fertilisation levels (5 and 10\u00a0g\u00a0N\u00a0m \u22122 ). There was a total of 36 mesocosms comprising sandy loam soil, which were equally distributed in four thermo-controlled greenhouses. In two of the greenhouses, the CO 2  concentration was kept at ambient concentration and in the other two at doubled concentration. Forage was harvested and the plants fertilised three times during the basic experiment, followed by harvest, a fertilisation with the double amount of nitrogen and rise of water level. Under elevated CO 2 , harvestable and total aboveground dry biomass production of a mixed  Trifolium/Phleum  stand was increased at both N treatments compared to ambient CO 2 . The N 2 O flux rates under ambient CO 2  were significantly higher at both N treatments during the early growth of mixed  Phleum/Trifolium  mesocosms compared to the N 2 O flux rate under elevated CO 2 . However, when the conditions were favourable for denitrification at the end of the experiment, i.e. N availability and soil moisture were high enough, the elevated CO 2  concentration enhanced the N 2 O efflux.", "keywords": ["13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "7. Clean energy"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.04.023"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.04.023", "name": "item", "description": "10.1016/j.soilbio.2007.04.023", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.04.023"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-10-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.04.028", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-05-31", "title": "Long-Term Exposure To Zn-Spiked Sewage Sludge Alters Soil Community Structure", "description": "Abstract   An 8 year study to investigate the effects of Zn-spiked sewage sludge additions on the microbial community structure and microbial processes was carried out in a field soil under pasture. The microbial community structure was evaluated using a combination of multiplex-terminal restriction fragment length polymorphism (M-TRFLP) and T-RFLP fingerprinting approaches. Soil respiration, microbial biomass and enzymatic activities were measured as indicators of soil microbial processes. Changes in the microbial community structure, with Zn additions were evident in all the microbial groups investigated (bacteria, fungi, archaea, actinobacteria and rhizobia/agrobacteria). The fungal community showed the greatest response to Zn additions compared to the other microbial communities measured. The relative abundance of several fungal terminal restriction fragments (TRFs) significantly increased in high Zn treated treatments, at the expense of others, some of which were lost from T-RFLP profiles completely. These results indicate that metal-spiked sludge application can have long-lasting impacts on the composition of the microbial community in pasture soils. Despite notable changes in community structure there was no significant long-term impact of Zn-spiked sludge applications on microbial respiration, biomass or enzyme activities.", "keywords": ["sludge", "zinc", "sewage", "0401 agriculture", " forestry", " and fisheries", "structure", "04 agricultural and veterinary sciences", "microbial community", "multiplex TRFLP", "6. Clean water", "12. Responsible consumption"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.04.028"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.04.028", "name": "item", "description": "10.1016/j.soilbio.2007.04.028", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.04.028"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-10-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.04.025", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-06-05", "title": "Sulphur In Soil And Light Fraction Organic Matter As Influenced By Long-Term Application Of Superphosphate", "description": "Abstract   Numerous studies have examined the role of light fraction (LF) organic matter in soil C and N cycling, but there is no published information on the amounts and nature of S in LF. The objective of this work was to characterize the S composition of LF in soils receiving different inputs of fertilizer S. Soils (0\u20137.5\u00a0cm) were taken from a long-term experiment (1952\u20131999) set up to examine the effects of single superphosphate (SP) (applied at 0, 188, or 376\u00a0kg\u00a0ha \u22121 \u00a0yr \u22121 , which equates to 0, 21, and 42\u00a0kg\u00a0SO 4 -S\u00a0ha \u22121 \u00a0yr \u22121 ) on the productivity of an irrigated, grass-clover pasture grazed by sheep. The S content of LF (separated by flotation on NaI solution with specific gravity 1.7) increased by \u223c20\u201330% in response to SP. The LF was enriched in organic S compared with whole soil (S concentration in LF was \u223c1000\u20131400\u00a0mg\u00a0kg \u22121  vs \u223c400\u2013500\u00a0mg kg \u22121  in whole soil), but LF-S represented only 1.3\u20134.7% of soil S. Most (\u223c88%) of the S in LF was C-bonded, reflecting the dominance of this form of S in organic matter returned to the soil in dung and plant residues. Hydriodic acid (HI) reducible-S accounted for only \u223c12% of LF-S, compared with 28\u201335% of whole soil organic S. Superphosphate tended to increase total soil N, due to improved clover growth. There was a strong positive relationship between total N and C-bonded S in whole soil and LF, whereas soil HI-S and N were not associated. Increases in C-bonded S where SP was applied appeared to be driven mainly by increases in soil N, which in turn were due to improved clover growth in response to phosphate supplied by SP. Increases in HI-S due to SP application were probably a direct response to inputs of S. As LF is a small pool of S, with a relatively wide C:S ratio (\u223c200:1), we concluded that it is unlikely to contribute a significant amount of plant-available S.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.04.025"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.04.025", "name": "item", "description": "10.1016/j.soilbio.2007.04.025", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.04.025"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-10-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.05.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-05-31", "title": "Soil Microbial Communities And Extracellular Enzyme Activity In The New Jersey Pinelands", "description": "We have much to learn about the roles of various groups of soil microorganisms in the decomposition of soil organic matter. Any changes in the type or amount of organic matter entering the soil, due to increasing atmospheric nitrogen (N) deposition and elevated carbon dioxide, could directly affect soil microbial community structure or the decompositional functions performed by the various microbial groups. We experimentally altered soil microbial communities using a factorial combination of trenching and in-growth bags crossed with fertilization treatments consisting of two forms of inorganic N and three N-containing organic molecules of increasing molecular weight and complexity. We tested three hypotheses: (1) Different components of soil microbial communities change in different ways following the application of fertilization treatments; (2) soil fungi decrease with increased inorganic N but increase following the application of organic molecules; and (3) activity of the extracellular enzymes peroxidase and phenol oxidase, which are important in lignin degradation, decrease following the addition of inorganic N. We found that the abundance of soil microbes and their composition (measured by lipid analysis) was significantly altered following the addition of glutamic acid, but not with inorganic N or more complex N-containing organic molecules. Lipids indicative of ectomycorrhizal fungi experienced the greatest increase in abundance. Extracellular enzyme activity, in contrast, changed very little and did not parallel changes in the structure of the soil microbial community that resulted from the isolation treatments. We conclude that small additions of N-containing organic compounds can cause changes in the structure of the soil microbial community but that community changes do not necessarily have an impact on extracellular enzyme activity.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.05.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.05.008", "name": "item", "description": "10.1016/j.soilbio.2007.05.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.05.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-10-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.05.016", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-06-14", "title": "Soil Organic Matter Dynamics In Grassland Soils Under Elevated Co2: Insights From Long-Term Incubations And Stable Isotopes", "description": "Abstract   Elevated atmospheric carbon dioxide (CO 2 ) levels generally stimulate carbon (C) uptake by plants, but the fate of this additional C largely remains unknown. This uncertainty is due in part to the difficulty in detecting small changes in soil carbon pools. We conducted a series of long-term (170\u2013330 days) laboratory incubation experiments to examine changes in soil organic matter pool sizes and turnover rates in soil collected from an open-top chamber (OTC) elevated CO 2  study in Colorado shortgrass steppe. We measured concentration and isotopic composition of respired CO 2  and applied a two-pool exponential decay model to estimate pool sizes and turnover rates of active and slow C pools. The active and slow C pools of surface soils (5\u201310\u00a0cm depth) were increased by elevated CO 2 , but turnover rates of these pools were not consistently altered. These findings indicate a potential for C accumulation in near-surface soil C pools under elevated CO 2 . Stable isotopes provided evidence that elevated CO 2  did not alter the decomposition rate of new C inputs. Temporal variations in measured \u03b4 13 C of respired CO 2  during incubation probably resulted mainly from the decomposition of changing mixtures of fresh residue and older organic matter. Lignin decomposition may have contributed to declining \u03b4 13 C values late in the experiments. Isotopic dynamics during decomposition should be taken into account when interpreting \u03b4 13 C measurements of soil respiration. Our study provides new understanding of soil C dynamics under elevated CO 2  through the use of stable C isotope measurements during microbial organic matter mineralization.", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.05.016"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.05.016", "name": "item", "description": "10.1016/j.soilbio.2007.05.016", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.05.016"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-10-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.05.029", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-07-06", "title": "Initial Recovery Of Soil Carbon And Nitrogen Pools And Dynamics Following Disturbance In Jack Pine Forests: A Comparison Of Wildfire And Clearcut Harvesting", "description": "Abstract   Forests naturally maintained by stand-replacing wildfires are often managed with clearcut harvesting, yet we know little about how replacing wildfire with clearcutting affects soil processes and properties. We compared the initial recovery of carbon (C) and nitrogen (N) pools and dynamics following disturbance in jack pine ( Pinus banksiana ) stands in northern Lower Michigan, USA, by sampling soils (Oa+A horizons) from three \u201ctreatments\u201d: 3\u20136-year-old harvest-regenerated stands, 3\u20136-year-old wildfire-regenerated stands and 40\u201355-year-old intact, mature stands ( n =4 stands per treatment). We measured total C and N; microbial biomass and potentially mineralizable C and N; net nitrification; and gross rates of N mineralization and nitrification. Burned stands exhibited reduced soil N but not C, whereas clearcut and mature stands had similar quantities of soil organic matter. Both disturbance types reduced microbial biomass C compared to mature stands; however, microbial biomass N was reduced in burned stands but not in clearcut stands. The experimental C and N mineralization values were fit to a first-order rate equation to estimate potentially mineralizable pool size (C 0  and N 0 ) and rate parameters. Values for C 0  in burned and clearcut stands were approximately half that of the mature treatment, with no difference between disturbance types. In contrast, N 0  was lowest in the wildfire stands (170.2\u00a0\u03bcg\u00a0N\u00a0g \u22121 ), intermediate in the clearcuts (215.4\u00a0\u03bcg\u00a0N\u00a0g \u22121 ) and highest in the mature stands (244.6\u00a0\u03bcg\u00a0N\u00a0g \u22121 ). The most pronounced difference between disturbance types was for net nitrification. These data were fit to a sigmoidal growth equation to estimate potential NO 3  \u2212  accumulation (Nit max ) and kinetic parameters. Values of Nit max  in clearcut soils exceeded that of wildfire and mature soils (149.2 vs. 83.5 vs. 96.5\u00a0\u03bcg\u00a0NO 3  \u2212 \u2013N\u00a0g \u22121 , respectively). Moreover, the clearcut treatment exhibited no lag period for net NO 3  \u2212  production, whereas the burned and mature treatments exhibited an approximate 8-week lag period before producing appreciable quantities of NO 3  \u2212 . There were no differences between disturbances in gross rates of mineralization or nitrification; rather, lower NO 3  \u2212  immobilization rates in the clearcut soils, 0.20\u00a0\u03bcg\u00a0NO 3  \u2212 \u00a0g \u22121 \u00a0d \u22121  compared to 0.65 in the burned soils, explained the difference in net nitrification. Because the mobility of NO 3  \u2212  and NH 4  +  differs markedly in soil, our results suggest that differences in nitrification between wildfire and clearcutting could have important consequences for plant nutrition and leaching losses following disturbance.", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.05.029"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.05.029", "name": "item", "description": "10.1016/j.soilbio.2007.05.029", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.05.029"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-11-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.08.019", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2007-10-02", "title": "Bacterial And Fungal Response To Nitrogen Fertilization In Three Coniferous Forest Soils", "description": "Forest soil carbon (C) pools may act as sinks for, or sources of, atmospheric carbon dioxide, while nitrogen (N) fertilization may affect the net exchange of C in forest ecosystems. Since all major C and N processes in soil are driven by soil microorganisms, we evaluated the effects of N fertilization on biomass and bacterial and fungal activity in soils from three Norway spruce forests with different climatic and N availability conditions. N deposition and net N mineralization were higher at the sites in southern Sweden than at the site in northern Sweden. We also studied the extent to which N fertilization altered the nutrient(s) limiting bacterial growth in soil. We found that on average microbial biomass was reduced by \u223c40% and microbial activity by \u223c30% in fertilized plots. Bacterial growth rates were more negatively affected by fertilization than fungal growth rates, while fungal biomass (estimated using the phospholipid fatty acid (PLFA) 18:2\u03c96,9) decreased more than bacterial biomass as a consequence of fertilization. The microbial community structure (indicated by the PLFA pattern) was changed by fertilization, but not in the same way at the three sites. Soil bacteria were limited by a lack of carbon in all forests, with the carbon limitation becoming more evident in fertilized plots, especially in the forests that had previously been the most N-limited ones. This study thus showed that the effects of N fertilization differed depending on the conditions at the site prior to fertilization.", "keywords": ["0106 biological sciences", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.08.019"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.08.019", "name": "item", "description": "10.1016/j.soilbio.2007.08.019", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.08.019"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-02-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.08.023", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2007-11-06", "title": "Direct And Indirect Effects Of Nitrogen Deposition On Litter Decomposition", "description": "Elevated nitrogen (N) deposition can affect litter decomposition directly, by raising soil N availability and the quantity and quality of litter inputs, and indirectly by altering plant community composition. We investigated the importance of these controls on litter decomposition using litter bags placed in annual herb based microcosm ecosystems that had been subject to two rates of N deposition (which raised soil inorganic N availability and stimulated litter inputs) and two planting regimes, namely the plant species compositions of low and high N deposition environments. In each microcosm, we harvested litter bags of 10 annual plant species, over an 8-week period, to determine mass loss from decomposition. Our data showed that species differed greatly in their decomposability, but that these differences were unlikely to affect decomposition at the ecosystem level because there was no correlation between a species\u2019 decomposability and its response to N deposition (measured as population seed production under high N, relative to low N, deposition). Litter mass loss was 2% greater in high N deposition microcosms. Using a comprehensive set of measurements of the microcosm soil environments, we found that the most statistically likely explanation for this effect was increased soil enzyme activity (cellobiosidase, \u03b2-glucosidase and \u03b2-xylosidase), which appears to have occurred in response to a combination of raised soil inorganic N availability and stimulated litter inputs. Our data indicate that direct effects of N deposition on litter input and soil N availability significantly affected decomposition but indirect effects did not. We argue that indirect effects of changes to plant species composition could be stronger in natural ecosystems, which often contain a greater diversity of plant functional types than those considered here.", "keywords": ["2. Zero hunger", "570", "Litter decomposition", "04 agricultural and veterinary sciences", "15. Life on land", "Nitrogen deposition", "630", "Plant species composition", "C:N ratio", "13. Climate action", "Decomposer community", "PLFA", "0401 agriculture", " forestry", " and fisheries", "Soil enzyme activities"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.08.023"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.08.023", "name": "item", "description": "10.1016/j.soilbio.2007.08.023", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.08.023"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-03-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.05.028", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-07-03", "title": "Endogeic Earthworms Alter Carbon Translocation By Fungi At The Soil-Litter Interface", "description": "Abstract   The effect of endogeic earthworms ( Octolasion tyrtaeum  (Savigny)) on the translocation of litter-derived carbon into the upper layer of a mineral soil by fungi was investigated in a microcosm experiment. Arable soil with and without  O. tyrtaeum  was incubated with  13 C/ 15 N-labelled rye leaves placed on plastic rings with gaze (64\u00a0\u03bcm mesh size) to avoid incorporation of leaves by earthworms. The plastic rings were positioned either on or 3\u00a0cm above the soil surface, to distinguish between biotic and chemical/physical translocation of nutrients by fungi and leaching.  Contact of leaves to the soil increased  13 C translocation, whereas presence of  O. tyrtaeum  reduced the incorporation of  13 C into the mineral soil in all treatments. Although biomass of  O. tyrtaeum  decreased during the experiment, more  13 C and  15 N was incorporated into earthworm tissue in treatments with contact of leaves to the soil. Contact of leaves to the soil and the presence of  O. tyrtaeum  increased cumulative  13 CO 2 -C production by 18.2% and 14.1%, respectively.  The concentration of the fungal bio-indicator ergosterol in the soil tended to be increased and that of the fungal-specific phospholipid fatty acid 18:2 \u03c9 6 was significantly increased in treatments with contact of leaves to the soil. Earthworms reduced the concentration of ergosterol and 18:2 \u03c9 6 in the soil by 14.0% and 43.2%, respectively. Total bacterial PLFAs in soil were also reduced in presence of  O. tyrtaeum , but did not respond to the addition of the rye leaves. In addition, the bacterial community in treatments with  O. tyrtaeum  differed from that without earthworms and shifted towards an increased dominance of Gram-negative bacteria.  The results indicate that litter-decomposing fungi translocate litter-derived carbon via their mycelial network in to the upper mineral soil. Endogeic earthworms decrease fungal biomass by grazing and disruption of fungal hyphae thereby counteracting the fungal-mediated translocation of carbon in soils.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.05.028"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.05.028", "name": "item", "description": "10.1016/j.soilbio.2007.05.028", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.05.028"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-11-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.05.031", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-07-05", "title": "Soil Microbial Biomass, Dehydrogenase Activity, Bacterial Community Structure In Response To Long-Term Fertilizer Management", "description": "This study describes the effects of balanced versus nutrient-deficiency fertilization on soil microbial biomass, activity, and bacterial community structure in a long-term (16 years) field experiment. Long-term fertilization greatly increased soil microbial biomass C and dehydrogenase activity, except that the P-deficiency fertilization had no significant effect. Organic manure had a significantly greater (P<0.05) impact on the biomass C and the activity, compared with mineral fertilizers. Microbial metabolic activity (dehydrogenase activity per microbial biomass C) was significantly higher (P<0.05) under balanced fertilization than under nutrient-deficiency fertilization. General bacterial community structure was analyzed by PCR-denaturing gradient gel electrophoresis (DGGE) targeting eubacterial 16S rRNA gene. Mineral fertilization did not affect the DGGE banding pattern, while specific DGGE band was observed in organic manure-fertilized soils. Phylogenetic analysis showed that the change of bacterial community in organic manure-fertilized soil might not be because of the direct influence of the bacteria in the compost, but because of the promoting effect of the compost on the growth of an indigenous Bacillus sp. in the soil. We emphasize the importance of balanced-fertilization, as well as the role of P, in maintaining soil organic matter, and promoting the biomass and activity of microorganisms.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.05.031"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.05.031", "name": "item", "description": "10.1016/j.soilbio.2007.05.031", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.05.031"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-11-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.07.016", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-08-22", "title": "The Influence Of Soluble Carbon And Fertilizer Nitrogen On Nitric Oxide And Nitrous Oxide Emissions From Two Contrasting Agricultural Soils", "description": "Contradictory effects of simultaneous available organic C and N sources on nitrous oxide (N2O), carbon dioxide (CO2) and nitric oxide (NO) fluxes are reported in the literature. In order to clarify this controversy, laboratory experiments were conduced on two different soils, a semiarid arable soil from Spain (soil I, pH=7.5, 0.8%C) and a grassland soil from Scotland (soil II, pH=5.5, 4.1%C). Soils were incubated at two different moisture contents, at a water filled pore space (WFPS) of 90% and 40%. Ammonium sulphate, added at rates equivalent to 200 and 50 kg N ha\u22121, stimulated N2O and NO emissions in both soils. Under wet conditions (90% WFPS), at high and low rates of N additions, cumulative N2O emissions increased by 250.7 and 8.1 ng N2O\u2013N g\u22121 in comparison to the control, respectively, in soil I and by 472.2 and 2.1 ng N2O\u2013N g\u22121, respectively, in soil II. NO emissions only significantly increased in soil I at the high N application rate with and without glucose addition and at both 40% and 90% WFPS. In both soils additions of glucose together with the high N application rate (200 kg N ha\u22121) reduced cumulative N2O and NO emissions by 94% and 55% in soil I, and by 46% and 66% in soil II, respectively. These differences can be explained by differences in soil properties, including pH, soil mineral N and total and dissolved organic carbon content. It is speculated that nitrifier denitrification was the main source of NO and N2O in the C-poor Spanish soil, and coupled nitrification\u2013denitrification in the C-rich Scottish soil.", "keywords": ["2. Zero hunger", "mitigation", "mineral N", "nitrous oxide", "nitric oxide", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "glucose", "soil moisture", "15. Life on land", "soil respiration", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.07.016"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.07.016", "name": "item", "description": "10.1016/j.soilbio.2007.07.016", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.07.016"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-01-01T00:00:00Z"}}, {"id": "10.1016/j.still.2006.08.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:54Z", "type": "Journal Article", "created": "2006-09-28", "title": "Effect Of The Conversion Of Grassland To Spring Wheat Field On The Co2 Emission Characteristics In Inner Mongolia, China", "description": "Chinese grasslands have undergone great changes in land use in recent decades. Approximately 18.2% of the present arable land in China originated from the cultivation of grassland, but its impact on the carbon cycle has not been fully understood. This study wasconducted insitu for3yearstoassessthecomprehensive effects ofcultivationof temperatesteppe onsoilorganiccarbon(SOC) and soil respiration rates as well as ecosystem respiration. As compared with those in the Stipa baicalensis steppe, the SOC concentrations at depths of 0\u201010 and 10\u201020 cm in the spring wheat field were found to have decreased by 38.3 and 17.4% respectively from 29.5 and 21.9 g kg \ufffd 1 to 18.2 and 18.1 g kg \ufffd 1 after a cultivation period of 30 years. Accordingly, the total amounts of soil respiration through the growing season (from April to September) in 2002, 2003 and 2004 were 265.2, 282.2 and 237.4 g C m \ufffd 2 respectivelyinthespringwheatfield,whichwereslightly lowerthanthevaluesof342.2,412.0and312.1 g C m \ufffd 2 in the S. baicalensis steppe, while ecosystem respiration of 690.9, 991.2 and 569.6 g C m \ufffd 2 respectively in the spring wheat field were markedly higher than those of 447.0, 470.9 and 429.7 g C m \ufffd 2 in the steppe plot. Similar seasonal variations of ecosystem respiration and soil respiration existed in both sample sites. Respiration rates were higher and greater differences existed in both ecosystem respiration and soil respiration during the exuberant growth stage of plants (from mid-June to mid-August). However, in the slower-growth period of the growing season (before late May and after late August), the CO2 effluxes of the two sample sites were similar and remained at a relatively low level. The results also showed that ecosystem respiration and soil respiration were under similar environmental controls in both sample sites. Soil water content at a depth of 0\u201010 cm and soil temperatures at 5 and 10 cmwere themain factors affectingthevariations in ecosystemrespiration and soil respirationrates indroughty yearsof 2002and 2004 and in the rainy 2003, respectively. This study suggests that the conversion of the grassland to the spring wheat field has increased the carbon loss of the whole ecosystem due to the change of vegetation cover type and significantly reduced the carbon storage of surface soil. In addition, the tillage of grassland had different effects on ecosystem respiration and soil respiration. The effects were also dissimilar in different growthstages, which should be fully considered when assessing and predicting the effects of cultivation on the net CO2 balance of grassland ecosystems. # 2006 Elsevier B.V. All rights reserved.", "keywords": ["2. Zero hunger", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Manfred Domroes, Jiyuan Liu, Yunshe Dong, Yunshe Dong, Xing-Ren Liu, Yuanbo Geng, Yuchun Qi, Li-xin Liu, Xiao-hong Yang,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.still.2006.08.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2006.08.008", "name": "item", "description": "10.1016/j.still.2006.08.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2006.08.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-06-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.05.035", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-07-20", "title": "Mineralization And Carbon Turnover In Subarctic Heath Soil As Affected By Warming And Additional Litter", "description": "Arctic soil carbon (C) stocks are threatened by the rapidly advancing global warming. In addition to temperature, increasing amounts of leaf litter fall following from the expansion of deciduous shrubs and trees in northern ecosystems may alter biogeochemical cycling of C and nutrients. Our aim was to assess how factorial warming and litter addition in a long-term field experiment on a subarctic heath affect resource limitation of soil microbial communities (measured by thymidine and leucine incorporation techniques), net growing-season mineralization of nitrogen (N) and phosphorus (P), and carbon turnover (measured as changes in the pools during a growing-season-long field incubation of soil cores in situ). The mainly N limited bacterial communities had shifted slightly towards limitation by C and P in response to seven growing seasons of warming. This and the significantly increased bacterial growth rate under warming may partly explain the observed higher C loss from the warmed soil. This is furthermore consistent with the less dramatic increase in the contents of dissolved organic carbon (DOC) and dissolved organic N (DON) in the warmed soil than in the soil from ambient temperature during the field incubation. The added litter did not affect the carbon content, but it was a source of nutrients to the soil, and it also tended to increase bacterial growth rate and net mineralization of P. The inorganic N pool decreased during the field incubation of soil cores, especially in the separate warming and litter addition treatments, while gross mineralized N was immobilized in the biomass of microbes and plants transplanted into the incubates soil cores, but without any significant effect of the treatments. The effects of warming plus litter addition on bacterial growth rates and of warming on C and N transformations during field incubation suggest that microbial activity is an important control on the carbon balance of arctic soils under climate change.", "keywords": ["13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.05.035"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.05.035", "name": "item", "description": "10.1016/j.soilbio.2007.05.035", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.05.035"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-12-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.08.015", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:38Z", "type": "Journal Article", "created": "2007-09-25", "title": "Nitrogen And Phosphorus Limitation Of Soil Microbial Respiration In Two Tropical Agroforestry Parklands In The South-Sudanese Zone Of Burkina Faso: The Effects Of Tree Canopy And Fertilization", "description": "We studied nutrient limitation and availability for soil microbial respiration after additions of glucose (C), in combination with nitrogen (N) and phosphorus (P) in soil samples taken from parklands of Vitellaria paradoxa and Faidherbia albida. We hypothesized that in these P-fixing soils: (i) after C addition, respiration will be limited by P, but P-limitation will be lower under tree canopies; and (ii) the maximum respiration rates after adding C will be higher with than without applications of inorganic fertilizer (NPK) in the field. The study site was located in the south-Sudanese zone of Burkina Faso. Microbial respiration was measured as CO2 evolution from soil samples incubated under laboratory conditions. Two microbial growth peaks were observed after addition of C plus P to the soil samples. When P was added together with C, the initial increase in the microbial respiration rate was higher than when N and C were added, and the maximum respiration rate was also reached earlier. We conclude that P limited the initial rate of respiration. Under the tree canopy the P and N availability, was higher under both F. albida and V. paradoxa trees, than in areas beyond their canopies. NPK fertilization in the field resulted in higher soil reserves of N and P, but these nutrients had low availability in the short term. Results indicated that more P is available in forms that are immediately accessible to microorganisms under tree canopies, than outside the cover of their canopies.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.08.015"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.08.015", "name": "item", "description": "10.1016/j.soilbio.2007.08.015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.08.015"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-02-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.08.021", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2007-11-09", "title": "Observed And Modelled Soil Carbon And Nitrogen Changes After Planting A Pinus Radiata Stand Onto Former Pasture", "description": "Abstract   After reforesting pasture land, it is often observed that soil carbon stocks decrease. The present work reports findings from a site near Canberra, Australia, where a pine forest (Pinus radiata) was planted onto a former unimproved pasture site. We report a number of detailed observations seeking to understand the basis of the decline in soil C stocks. This is supported by simulations using the whole-ecosystem carbon and nitrogen cycling model CenW 3.1. The model indicated that over the first 18 years after forest establishment, the site lost about 5.5\u00a0t\u00a0C\u00a0ha\u22121 and 588\u00a0kgN\u00a0ha\u22121 from the soil. The C:N ratio of soil organic matter did not change in a systematic manner over the observational period. Carbon and nitrogen stocks contained in the biomass of the 18-year old pine stand exceeded that of the pasture by 88\u00a0t\u00a0C\u00a0ha\u22121 and 393\u00a0kgN\u00a0ha\u22121. An additional 6.1\u00a0t\u00a0C\u00a0ha\u22121 and 110\u00a0kgN\u00a0ha\u22121 accumulated in above-ground litter. These changes, together with the vertical distribution of carbon and nitrogen in the soil, agreed well with the observation at the site. It was assumed that over 18 years, there was also a loss of 86\u00a0kgN\u00a0ha\u22121 from the ecosystem because of normal gaseous losses during nitrogen turn-over and a small amount of nitrogen leaching. Those losses could not be replenished in the pine system without symbiotic biological nitrogen fixation, and there were no fertiliser additions. A simple mass balance approach indicated that the amount of nitrogen accumulating in plant biomass and the litter layer plus the assumed nitrogen loss from the site matched the amount of nitrogen lost from the soil organic nitrogen pool. This reduction in soil nitrogen, together with an unchanged C:N ratio, provided a simple and internally consistent explanation for the observed reduction of soil carbon after reforestation. It supports the general notion that trends in soil carbon upon land-use change can often be controlled by the possible fates of available soil nitrogen.", "keywords": ["550", "Nitrogen", "CenW", "Reforesting pasture lands", "910", "Carbon inorganic compounds", "01 natural sciences", "Ecosystems", "Nitrogen compounds", "C:N ratio", "Nitrogen fixation", "Pasture", "Biomass", "Reforestation", "0105 earth and related environmental sciences", "Keywords: Biological materials", "Pinus radiata", "Nitrogen cycling models", "modeling", "04 agricultural and veterinary sciences", "15. Life on land", "carbon sequestration", "Soil carbon", "Pine", "coniferous tree", "Pine forest", "Soils", "0401 agriculture", " forestry", " and fisheries", "Model"], "contacts": [{"organization": "Roger M. Gifford, LanBin Guo, Miko U. F. Kirschbaum, Miko U. F. Kirschbaum,", "roles": ["creator"]}]}, "links": [{"href": "https://openresearch-repository.anu.edu.au/bitstream/1885/61078/5/Kirschbaum_Observed_and_modelled_soil_carbon.pdf.jpg"}, {"href": "https://openresearch-repository.anu.edu.au/bitstream/1885/61078/7/01_Kirschbaum_Observed_and_modelled_soil_2008.pdf.jpg"}, {"href": "https://doi.org/10.1016/j.soilbio.2007.08.021"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.08.021", "name": "item", "description": "10.1016/j.soilbio.2007.08.021", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.08.021"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-01-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.09.015", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2007-11-09", "title": "Changes In Chemical And Biochemical Soil Properties Induced By 11-Yr Repeated Additions Of Different Organic Materials In Maize-Based Forage Systems", "description": "Abstract   The repeated addition of organic materials to the soil greatly affects the physical, chemical and biological characteristics. In the present work, we analyzed changes in soil quality properties of the tilled layer caused by different agronomic managements of maize which supply different amounts of carbon (C) and nitrogen (N) through the addition of slurry, farmyard manure or plant residues. The agronomic history of the analyzed soils, which derived from a medium-term (11\u00a0yr) field experiment located in NW Italy, represents typical managements of maize for this region. The area is characterized by highly intensive agriculture, with consequent risks to soil degradation that could be limited by the efficient utilization of organic inputs and by recycling within cropping systems, the large amounts of manure that are produced from the many animal breeding farms in this region. We used a combination of both different chemical (soil organic C and total N) and biochemical indicators (potential soil respiration, potentially mineralizable N (PMN) and potential soil microbial biomass (SMB)). We considered the suitability of the selected biochemical indicators to describe the changes in soil characteristics resulting from the past management.  The results showed that the application of the different organic materials, in addition to urea-N fertilizer, increased SOM contents and altered the selected soil biochemical properties compared with the unfertilized treatment, especially in the upper 15\u00a0cm of the 0\u221230\u00a0cm tilled soil layer. Farmyard manure applications caused the greatest increase in SOM content, PMN and potential SMB, whilst return of maize straw produced the largest increase in potential soil respiration, but had less effect on total soil organic C and SMB. The use of slurry only caused a moderate increase in SOM and showed intermediate changes in biochemical properties. Also, the rate of C accumulation in the soil per unit of C applied was higher for farmyard manure application than for slurry and straw incorporation in the soil. Fertilization with only mineral N did not induce an increase in Corg and Ntot and even reduces soil N mineralization potential.  Because of the high variability in the data, potential SMB carbon could be considered as a less successful indicator for differentiating between past agronomic histories and effects on soil quality, whilst microbial activity (measured by potential soil respiration) and PMN, gave a more reliable and useful indication of the amount of easily decomposable organic carbon.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.09.015"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.09.015", "name": "item", "description": "10.1016/j.soilbio.2007.09.015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.09.015"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-03-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.11.013", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2007-12-19", "title": "Earthworms, Soil Mineral Nitrogen And Forage Production In Grass-Based Hayfields", "description": "Abstract   This study was designed to address how earthworm activity influences soil mineral nitrogen (N), plant N uptake and forage yield in grass-based hayfields. Earthworm populations were reduced by applying carbaryl pesticide to the experimental field plots every 2-weeks, effectively eliminating the earthworms for up to 12-weeks from May to August. Grass yields and tissue N concentrations were measured every 2 weeks, and the soil mineral N concentration determined at the final harvest. Reducing earthworm populations for up to 12-weeks did not affect grass yield or N uptake. However, regression analysis showed that plots with undisturbed earthworm populations had higher soil N by 0.8\u00a0kg\u00a0N\u00a0ha \u22121  per week, representing mineralization of about 10\u00a0kg\u00a0N\u00a0ha \u22121  during the 12-week study. This was a fraction of the fertilizer N recommendation (75\u00a0kg\u00a0N\u00a0ha \u22121 ) for grass-based hayfields in this region. Therefore, the increase in soil mineral N from earthworm activity was small, relative to the N requirements of the hayfield.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.11.013"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.11.013", "name": "item", "description": "10.1016/j.soilbio.2007.11.013", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.11.013"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-04-01T00:00:00Z"}}, {"id": "10.1016/j.still.2006.08.010", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:54Z", "type": "Journal Article", "created": "2006-09-23", "title": "Soil Biochemical Response To Long-Term Conservation Tillage Under Semi-Arid Mediterranean Conditions", "description": "Open AccessCICYT Projects (AGL2004-03684/AGR and AGL2005-02423), and Andalusian Autonomous Government (Junta de Andalucia, AGR 151 Group) supported these works.", "keywords": ["2. Zero hunger", "Soil organic matter", "Enzymatic activities", "Microbial biomass", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Soil quality", "Carbon", "6. Clean water", "Tillage"], "contacts": [{"organization": "Madej\u00f3n, Engracia, Moreno Lucas, F\u00e9lix, Murillo Carpio, Jos\u00e9 Manuel, Pelegr\u00edn, Francisco,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.still.2006.08.010"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2006.08.010", "name": "item", "description": "10.1016/j.still.2006.08.010", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2006.08.010"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-06-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.10.003", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2007-11-27", "title": "Water- And Plant-Mediated Responses Of Soil Respiration To Topography, Fire, And Nitrogen Fertilization In A Semiarid Grassland In Northern China", "description": "Soil respiration is one of the major carbon (C) fluxes between terrestrial ecosystems and the atmosphere and plays an important role in regulating the responses of ecosystem and global C cycling to natural and anthropogenic perturbations. A field experiment was conducted between April 2005 and October 2006 in a semiarid grassland in northern China to examine effects of topography, fire, nitrogen (N) fertilization, and their potential interactions on soil respiration. Mean soil respiration was 6.0% higher in the lower than upper slope over the 2 growing seasons. Annual burning in early spring caused constant increases in soil respiration (23.8%) over the two growing seasons. In addition, fire effects on soil respiration varied with both season and topographic position. Soil respiration in the fertilized plots was 11.4% greater than that in the unfertilized plots. Water- and plant-mediation could be primarily responsible for the changes in soil respiration with topography and after fire whereas the positive responses of soil respiration to N fertilization were attributable to stimulated plant growth, root activity and respiration. The different mechanisms by which topography, fire, and N fertilization influence soil respiration identified in this study will facilitate the simulation and projection of ecosystem C cycling in the semiarid grassland in northern China.", "keywords": ["2. Zero hunger", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.10.003"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.10.003", "name": "item", "description": "10.1016/j.soilbio.2007.10.003", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.10.003"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-03-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.12.018", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2008-01-23", "title": "Soil Microbial Biomass Response To Woody Plant Invasion Of Grassland", "description": "Abstract   Woody plant proliferation in grasslands and savannas has been documented worldwide in recent history. To better understand the consequences of this vegetation change for the C-cycle, we measured soil microbial biomass carbon (C mic ) in remnant grasslands (time 0) and woody plant stands ranging in age from 10 to 130 years in a subtropical ecosystem undergoing succession from grassland to woodlands dominated by N-fixing trees. We also determined the ratio of SMB-C to soil organic carbon (C mic /C org ) as an indicator of soil organic matter quality or availability, and the metabolic quotient ( q CO  2  ) as a measure of microbial efficiency. Soil organic carbon (C org ) and soil total nitrogen (STN) increased up to 200% in the 0\u201315\u00a0cm depth increment following woody plant invasion of grassland, but changed little at 15\u201330\u00a0cm. C mic  at 0\u201315\u00a0cm increased linearly with time following woody plant encroachment and ranged from 400\u00a0mg\u00a0C\u00a0kg \u22121  soil in remnant grasslands up to 600\u20131000\u00a0mg\u00a0C\u00a0kg \u22121  soil in older (>60 years) woody plant stands. C mic  at 15\u201330\u00a0cm also increased linearly with time, ranging from 100\u00a0mg\u00a0C\u00a0kg \u22121  soil in remnant grasslands to 400\u2013700\u00a0mg\u00a0C\u00a0kg \u22121  soil in older wooded areas. These changes in C mic  in wooded areas were correlated with concurrent changes in stores of C and N in soils, roots, and litter. The C mic /C org  ratio at 0\u201315\u00a0cm decreased with increasing woody plant stand age from 6% in grasslands to  q CO 2  values in woodlands (\u2a7e0.8\u00a0mg\u00a0CO 2 -C\u00a0g \u22121 \u00a0C mic \u00a0h \u22121 ) relative to remnant grasslands (0.4\u00a0mg\u00a0CO 2 -C\u00a0g \u22121 \u00a0C mic \u00a0h \u22121 ) indicated that more respiration was required per unit of C mic  in wooded areas than in grasslands. Observed increases in C org  and STN following woody plant encroachment in this ecosystem may be a function of both greater inputs of poor quality C that is relatively resistant to decay, and the decreased ability of soil microbes to decompose this organic matter. We suggest that increases in the size and activity of C mic  following woody plant encroachment may result in: (a) alterations in competitive interactions and successional processes due to changes in nutrient dynamics, (b) enhanced formation and maintenance of soil physical structures that promote C org  sequestration, and/or (c) increased trace gas fluxes that have the potential to influence atmospheric chemistry and the climate system at regional to global scales.", "keywords": ["2. Zero hunger", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.12.018"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.12.018", "name": "item", "description": "10.1016/j.soilbio.2007.12.018", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.12.018"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-05-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2008.01.006", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2008-04-29", "title": "Population Size And Specific Nitrification Potential Of Soil Ammonia-Oxidizing Bacteria Under Long-Term Fertilizer Management", "description": "Population size of soil ammonia-oxidizing bacteria (AOB) was quantified by real-time PCR in a long-term (16 years) field experiment under different fertilizer managements. AOB population sizes in mineral nitrogen-fertilized soils and organic manure-fertilized soil were 10.3 and 3.1 times, respectively, that of the control, while phosphorus and potassium fertilization had no significant effect. On the other hand, the AOB specific nitrification potential (soil nitrification potential per AOB cell) was significantly higher (P < 0.05) in organic manure-fertilized soil than in mineral-fertilized soils and the control, indicating that AOB was likely more metabolically active in organic manure-fertilized soils than in mineral nitrogen-fertilized soils after long-term application.", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2008.01.006"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2008.01.006", "name": "item", "description": "10.1016/j.soilbio.2008.01.006", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2008.01.006"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-07-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2008.01.025", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2008-05-08", "title": "Ectomycorrhizal Community And Extracellular Enzyme Activity Following Simulated Atmospheric N Deposition", "description": "Ectomycorrhizal (EM) fungi are abundant in temperate and boreal ecosystems and are understood to be an important means whereby plants can fulfill their nutrition requirements. The extent of the EM fungal involvement in accessing organic sources of N, however, remains unknown. Some EM fungi have been found to produce lignolytic and proteolytic enzymes which are necessary to depolymerize organic substrates, but this ability varies by species. Both EM fungal communities and the activities of lignolytic and proteolytic enzymes may be sensitive to changes in inorganic N availability such as through increased atmospheric deposition. Our objectives were to simulate an ecologically relevant increase in atmospheric N deposition in areas currently receiving very little exogenous N and examine changes in EM community composition, lignin degrading enzyme activity, and soil protein depolymerization. We found a distinct shift in the EM community composition following simulated atmospheric N deposition. Likewise, we found a significant decrease in the activity of lignin degrading enzymes, which could have important implications on ecosystem N and C cycling. Contrary to our hypotheses, proteolysis increased following N addition. The fact that lignolytic and proteolytic enzymes exhibit opposite responses is counterintuitive and suggests much is yet to be learned about how N addition affects global C storage by affecting the decomposition of organic matter. Our data suggest small increases in atmospheric N deposition could produce significant changes in communities of EM fungi and N and C cycles.", "keywords": ["0106 biological sciences", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"], "contacts": [{"organization": "Brenda B. Casper, Richard W. Lucas,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2008.01.025"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2008.01.025", "name": "item", "description": "10.1016/j.soilbio.2008.01.025", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2008.01.025"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-07-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2008.03.018", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2008-05-13", "title": "Timber Harvesting Alters Soil Carbon Mineralization And Microbial Community Structure In Coniferous Forests", "description": "Timber harvesting influences both above and belowground ecosystem nutrient dynamics. Impact of timber harvesting on soil organic matter (SOM) mineralization and microbial community structure was evaluated in two coniferous forest species, ponderosa pine (Pinus ponderosa) and lodgepole pine (Pinus contorta). Management of ponderosa pine forests, particularly even-aged stand practices, increased the loss of CO2-C and hence reduced SOM storage potential. Changes in soil microbial community structure were more pronounced in ponderosa pine uneven-aged and heavy harvest stands and in lodgepole pine even-aged stand as compared to their respective unmanaged stands. Harvesting of trees had a negative impact on SOM mineralization and soil microbial community structure in both coniferous forests, potentially reducing coniferous forest C storage potential.", "keywords": ["XXXXXX - Unknown", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2008.03.018"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2008.03.018", "name": "item", "description": "10.1016/j.soilbio.2008.03.018", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2008.03.018"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-07-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2008.09.008", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:17:39Z", "type": "Journal Article", "created": "2008-10-14", "title": "Initial Effects Of Fire And Mechanical Thinning On Soil Enzyme Activity And Nitrogen Transformations In Eight North American Forest Ecosystems", "description": "This study assessed the first-year effect of three ecosystem restoration treatments (prescribed fire, mechanical thinning, and their combination) on soil enzyme activity, soil N transformations, and C:N ratios of soil organic matter and mineral soil in eight North American forested ecosystems. The ecosystems we studied were part of the larger Fire and Fire Surrogate (FFS) network, and all had a history of frequent fire that has been altered by almost a century of organized fire suppression. Across all eight sites there were no statistically significant effects of the three manipulative treatments on phosphatase activity or chitinase activity; in contrast, at the network-scale phenol oxidase activity was reduced by fire alone, relative to the control. There was no significant network-scale effect of the three treatments on net N mineralization or net nitrification. Soil C:N ratio increased modestly after mechanical thinning, but not after prescribed fire or the combination of fire and thinning. There was a statistically significant reduction in forest floor C:N ratio as a result of all three treatments. Ordination of the differences between the treated and control areas indicated that fire alone resulted in greater changes in phenol oxidase activity and net nitrification than did the other two treatments. Large-scale restoration treatments such as those utilized in this study produce modest proximate effects on soil microbial activity and N transformations.", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2008.09.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2008.09.008", "name": "item", "description": "10.1016/j.soilbio.2008.09.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2008.09.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-12-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=AGRI&offset=3550&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=AGRI&offset=3550&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "prev", "title": "items (prev)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=AGRI&offset=3500", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=AGRI&offset=3600", "hreflang": "en-US"}], "numberMatched": 10500, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-04-04T13:38:26.855673Z"}