{"type": "FeatureCollection", "features": [{"id": "10.2307/1938874", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "description": "<p>Standing crop, rates of production, mortality, decomposition, and nitrogen dynamics of two size classes of fine roots (0\uffe2\uff80\uff9405 mm and 0.5\uffe2\uff80\uff943.0 mm diameter) were estimated for 1 yr in a 53\uffe2\uff80\uff94yr\uffe2\uff80\uff94old red pine (Pinus resinosa Ait.) plantation and in an adjacent 80\uffe2\uff80\uff94yr\uffe2\uff80\uff94old mixed hardwood stand in north\uffe2\uff80\uff94central Massachusetts. Dry matter of live fine roots was higher in the hardwoods (mean = 6.1 Mg/ha; annual range 3.6\uffe2\uff80\uff948.6 Mg/ha) than in the plantation (mean = 5.1 Mg/ha; annual range 2.5\uffe2\uff80\uff947.8 Mg/ha.) Dead root mass was similar in the hardwoods (mean = 4.4 Mg/ha) and the plantation (mean = 4.0 Mg/ha). Nitrogen standing crop of live roots in the hardwoods was higher than in the plantation (mean = 65 kg/ha and 42 kg/ha, respectively). Net fine root production was estimated from changes in standing crop. Production estimates ranged from 4.1 to 11.4 Mg\uffc2\uffb0ha\uffe2\uff80\uff941\uffc2\uffb0yr\uffe2\uff80\uff941 in the hardwoods and from 3.2 to 10.9 Mg\uffc2\uffb0ha\uffe2\uff80\uff941\uffc2\uffb0yr\uffe2\uff80\uff941 in the plantation, depending on the assumptions made in the calculations. Concurrent estimates of total nitrogen requirement for this production ranged from 73 to 184 kg\uffc2\uffb0ha\uffe2\uff80\uff941\uffc2\uffb0yr\uffe2\uff80\uff941 in the hardwoods and from 44 to 122 kg\uffc2\uffb0ha\uffe2\uff80\uff941\uffc2\uffb0yr\uffe2\uff80\uff941 in the plantation. Decomposition, measured as mass loss from buried cloth bags, was \uffc2\uffb020% in 0.4\uffe2\uff80\uff94mm mesh bags and as high as 47% in 3\uffe2\uff80\uff94mm mesh bags after 1 yr. Integrating production and nitrogen requirements with estimates of decomposition rates and nitrogen mineralization for these ecosystems suggested that the lower estimates of production are more accurate.</p>", "keywords": ["2. Zero hunger", "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/10.2307/1938874"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1938874", "name": "item", "description": "10.2307/1938874", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1938874"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1982-10-01T00:00:00Z"}}, {"id": "10.2307/1310387", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:53Z", "type": "Journal Article", "created": "2006-04-25", "title": "Detritus Accumulation Limits Productivity Of Tallgrass Prairie", "description": "allgrass prairie once occupied about three percent (ca. 575,000 km2) of the North American continent (Kiichler 1964, Figure 1), but now is found in only isolated remnants. With a few notable exceptions (e.g., Hadley and Kieckhefer 1963, Kucera et al. 1967), the eastern portion of the tallgrass prairie was converted into agroecosystems before scientists could evaluate the mechanisms responsible for its maintenance and productivity. The largest remnant of the tallgrass prairie that escaped the plow is represented by the Flint Hills on the southwestern edge of the biome, a region of approximately 10,000 km2 that extends from northeastern Kansas south into northeastern Oklahoma. An Oklaho-", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"], "contacts": [{"organization": "T. R. Seastedt, A. K. Knapp,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/1310387"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/BioScience", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1310387", "name": "item", "description": "10.2307/1310387", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1310387"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1986-11-01T00:00:00Z"}}, {"id": "10.3390/rs9121276", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:21:31Z", "type": "Journal Article", "created": "2017-12-08", "title": "Irrigation Performance Assessment in Table Grape Using the Reflectance-Based Crop Coefficient", "description": "<p>In this paper, we present the results of our study on the operational application of the reflectance-based crop coefficient for assessing table grape irrigation requirements. The methodology was applied to provide irrigation advice and to assess the irrigation performance. The net irrigation water requirements (NIWR) simulated using the reflectance-based basal crop coefficient were provided to the farmer during the growing season and compared with the actual irrigation volumes applied. Two treatments were implemented in the field, increasing and reducing the irrigation doses by 25%, respectively, compared to the regular management. The experiment was carried out in a commercial orchard during three consecutive growing seasons in Northern Chile. The NIWR based on the model was approximately 900 mm per season for the orchard at tree maturity. The experimental results demonstrate that the regular irrigation applied covered only 76% of the NIWR for the whole season, and the analysis of monthly and weekly accumulated values indicates several periods of water shortage. The regular management system tended to underestimate the water requirements from October to January and overestimate the water requirements after harvest from February to April. The level of the deficit of water was quantified using such plant physiological parameters as stem water potential, vegetative development (coverage), and fruit productivity. The estimated NIWR was roughly covered in the treatment where the irrigation dose was increased, and the analyses of the crop production and fruit quality point to the relative advantage of this treatment. Finally, we conclude that the proposed approach allows the analysis of irrigation performance on the scale of commercial fields. These analytic capabilities are based on the well-demonstrated relationship of the crop evapotranspiration with the information provided by satellite images, and provide valuable information for irrigation management by identifying periods of water shortage and over-irrigation.</p>", "keywords": ["0106 biological sciences", "2. Zero hunger", "NDVI", "Science", "Q", "evapotranspiration", "earth observation", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water", "0401 agriculture", " forestry", " and fisheries", "crop water requirements", "plant water status", "crop coefficient", "table grape"]}, "links": [{"href": "http://www.mdpi.com/2072-4292/9/12/1276/pdf"}, {"href": "https://doi.org/10.3390/rs9121276"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Remote%20Sensing", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/rs9121276", "name": "item", "description": "10.3390/rs9121276", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/rs9121276"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-12-08T00:00:00Z"}}, {"id": "10.2307/1937469", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "title": "Soil Chemical-Change During 3 Decades In An Old-Field Loblolly-Pine (Pinus-Taeda L) Ecosystem", "description": "<p>The ability of soil to sustain its supply of nutrients to a growing forest is controlled by a complex of biogeochemical processes. Forest soil data are notably absent, however, that describe sustained nutrient supply of nutrient depletion. The objective of this study was to evaluate how exchangeable nutrient cations of a previously cultivated Ultisol responded to the first three decades of pine forest development. On six occasions during the three decades, the upper 0.6 m of soil was sampled from eight permanent plots and chemically analyzed with the same procedures. During this period, KCl\uffe2\uff80\uff94exchangeable acidity (as positive charges of adsorbed H and Al ions) increased by 37.3 kmolc/ha in the upper 0.6 m of soil and positive charges of exchangeable Ca and Mg were depleted by 34.8 and 8.9 kmolc/ha (by 696 and 108 kg/ha), whereas, exchangeable K was reduced by only 0.5 kmolc/ha (19 kg/ha). Depletion of soil exchangeable Ca was on the same order of magnitude as Ca removals (i.e., Ca accumulation in biomass and forest floor plus that lost in soil leaching). Removals of soil Mg also appeared to outpace resupply from recycling, atmospheric deposition, and mineral weathering, but not the same degree as Ca. Over the three decades, soil leaching loss of these divalent cations (from 0.6 m depth) appeared equal to cation accumulation in biomass plus forest floor, with sulfate balancing about half these cations in leachates. In contrast to Ca and Mg, total K removals from the soil exceeded reductions in soil exchangeable K by nearly 20\uffe2\uff80\uff94fold. Exchangeable K was well buffered in surface mineral soils apparently due to a combination of biological recycling via leaching of canopies and forest floor plus mineral weathering release. These nutrient dynamics may be common to many nutrient\uffe2\uff80\uff94demanding forest ecosystems supported by soils with low activity kandic or oxic horizons. Such soils (Ultisols and Oxisols) occur on many hundreds of millions of hectares in temperate and tropical zones.</p>", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "12. Responsible consumption"]}, "links": [{"href": "https://doi.org/10.2307/1937469"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1937469", "name": "item", "description": "10.2307/1937469", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1937469"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1994-07-01T00:00:00Z"}}, {"id": "10.2307/1936666", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "description": "<p>A secondary succession sequence of 14 northern hardwoods stands was sampled for forest floor organic matter and nutrient content. During the first 15 yr following clear cutting, the forest floor decreased by 30.7 Mg/ha, a decline of over 50%. The decrease in the forest floor and slash (logging residue) may be greater than the increase in the living biomass. During the next 50 yr the forest floor increased by 28.0 Mg/ha and by year 64 was within 5% of an asymptote of 56.0 Mg/ha. Nutrients were analyzed in 6 of the 14 stands. Magnesium, potassium, and nitrogen concentrations showed no successional pattern. However, calcium concentrations were significantly higher in the stands in which forest floor mass was low. The initial decrease in forest floor mass is attributed to lower leaf and wood litter fall and to more rapid decay resulting from higher temperature, moisture content, and nutrient levels and to early successional litter being more easily decomposed. The recovery of the forest floor is explained primarily as resulting from the rapid increase in the quantity and diameter of wood litter fall. JABOWA, the northern hardwood forest growth simulator, predicts a maximum rate of increase in woody litter by years 10\uffe2\uff80\uff9420 with a leveling off by years 30\uffe2\uff80\uff9450. An apparent asynchrony in function of the forest floor and slash as nutrient sources may be important to the recovery process. During the first 15 yr the forest floor is a major source of nutrients, releasing a net amount of approximately 800 kg/ha of nitrogen. During this period nitrogen immobilization in the decay of slash may account for as much as one\uffe2\uff80\uff94half of the nitrogen released from the forest floor. After year 15 the forest floor is no longer a source but a sink for nutrients as nutrients and organic matter accumulate. By year 15 the slash probably shifts in function from a sink to a source, providing nitrogen for the continuing rapid nitrogen accumulation in vegetation beyond year 15.</p>", "keywords": ["0106 biological sciences", "SD Forestry", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "GE Environmental Sciences"], "contacts": [{"organization": "Covington, W. Wallace", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/1936666"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1936666", "name": "item", "description": "10.2307/1936666", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1936666"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1981-02-01T00:00:00Z"}}, {"id": "10.2307/1937608", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "title": "Elevated Atmospheric Co2 Effects On Belowground Processes In C-3 And C-4 Estuarine Marsh Communities", "description": "<p>Belowground carbon allocation is a major component of a plant's carbon budget, yet relatively little is known about the response of roots to elevated atmospheric CO2. We have exposed three brackish marsh communities dominated by perennial macrophytes to twice ambient CO2 concentrations for two full growing seasons using open top chambers. One community was dominated by the C3 sedge Scirpus olneyi, one was dominated by the C4 grass Spartina patens, and one was a mixture of S. olneyi, S. patens, and Distichlis spicata, a C4 grass. Root and rhizome growth were studied in the 2nd yr of exposure by measuring growth into peat cores previously excavated and refilled with sphagnum peat devoid of roots. Growth under elevated CO2 resulted in an 83% increase in root dry mass per core in the Scirpus community. Those roots were also significantly lower in percentage of nitrogen than roots from ambient\uffe2\uff80\uff94grown plants. There was no effect of elevated CO2 on root growth or nitrogen content in the Spartina community or in the C4 component of the Mixed community.</p>", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"], "contacts": [{"organization": "Curtis, Peter S., Balduman, Lisa M., Drake, Bert G., Whigham, Dennis F.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/1937608"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1937608", "name": "item", "description": "10.2307/1937608", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1937608"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1990-10-01T00:00:00Z"}}, {"id": "10.2307/1938722", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "description": "<p>In a montane rain forest a \uffc2\uffb02500 m in Venezuela we fertilized plots with N, with P, or N and P for 4.5 yr. We measured trunk growth in circumference in control plots and in those fertilized with N and P, and measured litterfall in all four treatments. There were five 12 x 12 m plots per treatment. N was applied at 225 kg\uffc2\uffb0ha\uffe2\uff80\uff941\uffc2\uffb0yr\uffe2\uff80\uff941 and P at 75 kg\uffc2\uffb0ha\uffe2\uff80\uff941\uffc2\uffb0yr\uffe2\uff80\uff941 for the first 2 yr, and subsequently N was applied at 150 kg\uffc2\uffb0ha\uffe2\uff80\uff941\uffc2\uffb0yr\uffe2\uff80\uff941 and P at 50 kg\uffc2\uffb0ha\uffe2\uff80\uff941\uffc2\uffb0yr\uffe2\uff80\uff941. Rates of trunk growth in N and P fertilized plots were roughly doubled those in control plots (1.4 vs. 0.6 mm/yr). Total litterfall averaged 4.3 Mg\uffc2\uffb0ha\uffe2\uff80\uff941\uffc2\uffb0yr11 in the control plots. In the 4th yr after fertilization litterfall was significantly higher in plots fertilized with N + P (1.50 g\uffc2\uffb0m\uffe2\uff80\uff942\uffc2\uffb0d\uffe2\uff80\uff941) than in control plots (1.00 g\uffc2\uffb0m\uffe2\uff80\uff942\uffc2\uffb0d\uffe2\uff80\uff941). There were no significant differences in rates of litterfall between treatments during the first 3 yr after the first fertilization. The changes of rates of litterfall with time were significantly different between treatments. Litterfall in control plots fell by 9% per year, that in P\uffe2\uff80\uff94fertilized plots fell by 5% per year, and litterfall in N\uffe2\uff80\uff94 and in N + P\uffe2\uff80\uff94fertilized plots remained approximately constant. Nitrogen concentrations in litterfall were unaffected by fertilization with N or with P. Phosphorus concentrations were significantly increased by P fertilization. We conclude that N is more limiting that P in this forest.</p>", "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/10.2307/1938722"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1938722", "name": "item", "description": "10.2307/1938722", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1938722"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1992-02-01T00:00:00Z"}}, {"id": "10.2307/1938918", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "title": "Effects Of Temperature And Substrate Quality On Element Mineralization In 6 Arctic Soils", "description": "<p>We compared the effects of temperature on rates of microbial respiration, N mineralization, nitrification, and P mineralization in soils from six arctic ecosystems located along a toposequence on Alaska's North Slope. Soils from these ecosystems were incubated aerobically in the laboratory for 13 wk and at temperatures representative of field values during a typical growing season. Rates of C and N mineralization were insensitive to temperature between 3\uffc2\uffb0 and 9\uffc2\uffb0C but increased by factors of 2 or more between 9\uffc2\uffb0 and 15\uffc2\uffb0. For both C and N, differences in mineralization rates among soils were greater than differences due to incubation temperature within single soils. This suggests that the quality of soil organic matter varies widely among these ecosystems and is more important than soil temperature differences in controlling rates of these processes in the field. Nitrification occurred in all soils, even at 3\uffc2\uffb0, but there were large differences among soils in nitrification potentials. Overall differences in P mineralization between soils were small. Rates of P mineralization, however, decreased with increasing temperature in soils from some sites and increased with temperature in others. Carbon respired during the 13\uffe2\uff80\uff94wk incubations ranged between 1.5 and 8% of total soil organic C across soil types incubation temperatures. In contrast to the relatively high C mineralization rates in these soils, net N and P mineralization rates were very low and were likely due to high microbial demand for these nutrients. High microbial demand for mineral nutrients can severely limit plant N and P availability in arctic soils.</p>", "keywords": ["13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.2307/1938918"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1938918", "name": "item", "description": "10.2307/1938918", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1938918"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1991-02-01T00:00:00Z"}}, {"id": "10.2307/1939339", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "title": "Soil Organic-Matter Dynamics Along Gradients In Temperature And Land-Use On The Island Of Hawaii", "description": "<p>We studied soil organic matter (SOM) dynamics in allophanic soils (Udands) along independent gradients of temperature (altitude) and land use (forest\uffe2\uff80\uff94pasture) on the island of Hawaii. Using an integrated 13C signal derived from land conversion along with measurements of soil respiration and soil carbon, we separated rapid, intermediate, and very slow turnover SOM pools, and estimated turnover times for the large intermediate pool. These estimates were compared to independent estimates using either bomb\uffe2\uff80\uff94derived soil 14C or the Century soil organic matter model. All calculations based on a three\uffe2\uff80\uff94pool SOM structure yield rates of turnover that are 3 times slower than those produced by a single pool model. Accordingly, analyses of potential feedbacks between changes in climate, atmospheric CO2, and soil carbon should incorporate the heterogeneous nature of soil organic matter. We estimate that roughly three\uffe2\uff80\uff94quarters of the carbon in the top 20 cm of these soils has turnover times less than 30 yr. Turnover times for intermediate SOM double with a 10\uffc2\uffb0C change in mean annual temperature, suggesting that recalcitrant pools of SOM may be as sensitive to changes in temperature as the smaller labile pools.</p>", "keywords": ["2. Zero hunger", "13. Climate action", "organic matter dynamics", "land use", "temperature", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "carbon turnover", "15. Life on land", "USA", "Hawaii"], "contacts": [{"organization": "Susan E. Trumbore, Peter M. Vitousek, Alan R. Townsend, Alan R. Townsend,", "roles": ["creator"]}]}, "links": [{"href": "https://escholarship.org/content/qt8gg6f2vx/qt8gg6f2vx.pdf"}, {"href": "https://doi.org/10.2307/1939339"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1939339", "name": "item", "description": "10.2307/1939339", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1939339"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1995-04-01T00:00:00Z"}}, {"id": "10.2307/1939545", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "title": "Litter Decomposition On The Mauna-Loa Environmental Matrix, Hawaii - Patterns, Mechanisms, And Models", "description": "<p>We determined controls on litter decomposition and nutrient release for the widespread native tree Metrosideros polymorpha in 11 sites arrayed on gradients of elevation, precipitation, and substrate age on Hawaiian lava flows. The effects of site characteristics were evaluated using three common substrates (Metrosideros leaf litter from one of the sites, wood dowels, and filter paper) decomposed in each of the sites, and the inherent decomposability of tissue (substrate quality) was evaluated using Metrosideros leaf litter from each of the sites decomposed in a common site. Site characteristics were responsible for most of the variation in rates of decomposition in the range of sites and substrates examined. Common substrates decomposed much more rapidly in warm, low elevation sites; apparent Q10 values, calculated on the basis of variation in mean annual temperature with elevation on individual lava flows, ranged from 4 to 11. Litter decomposed slowly in the dry sites, but leaf litter produced in the dry sites decomposed more than twice as rapidly as litter from wet sites when both were measured in the same site. The higher substrate quality of litter from dry sites could be due to trade\uffe2\uff80\uff94offs among nutrient\uffe2\uff80\uff94use efficiency, water\uffe2\uff80\uff94use efficiency, and carbon gain by water\uffe2\uff80\uff94limited Metrosideros. We used these results to test a revision of the CENTURY soil organic matter model that had been designed to simulate the decomposition of surface litter. Simulations accurately matched the pattern but underestimated the magnitude of among\uffe2\uff80\uff94site differences in the decomposition of common substrates in a range of sites. Analyses of both field and simulation results suggested that the decomposition of Metrosideros leaf litter could be limited by nitrogen availability.</p>", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"], "contacts": [{"organization": "Douglas R. Turner, Peter M. Vitousek, Robert L. Sanford, William J. Parton,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/1939545"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1939545", "name": "item", "description": "10.2307/1939545", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1939545"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1994-03-01T00:00:00Z"}}, {"id": "10.3390/app12010341", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:21:17Z", "type": "Journal Article", "created": "2021-12-31", "title": "Replacing Mineral Fertilisers for Bio-Based Fertilisers in Potato Growing on Sandy Soil: A Case Study", "description": "<p>The refinement level of bio-based fertilisers (BBFs) can influence environmental and agronomic performance. This study analyses the environmental and agronomic effect of different BBFs on potato growing in sandy soil. A less refined product (liquid fraction of digestate (LFD)), two refined products (ammonium sulphate (AS) and potassium concentrate (KC)), and mineral fertilizer (MF) are compared by conducting: (i) a nitrogen (N) incubation experiment where the N release rate of the BBFs is determined, (ii) a greenhouse gas emission experiment where N2O, CO2, and CH4 emissions after BBF application are measured, (iii) a pot experiment where the nutrient fertiliser replacement value (NFRV) of the BBF is calculated, and (iv) a full-scale field trial where the potato quality and quantity and the remaining N residues in the soil after harvest are assessed. The N release rate and the NFRV of AS (142 \uffc2\uffb1 19% and 1.13, respectively) was higher compared with the LFD (113 \uffc2\uffb1 24% and 1.04) and MF (105 \uffc2\uffb1 16% and 1.00). Lowest N2O emissions were observed after the application of the less refined product (0.02 \uffc2\uffb1 0.01 per 100 g N applied) and highest for MF urea (0.11 \uffc2\uffb1 0.02 per 100 g N applied). In the full-scale field trial, no significant difference in potato yield was observed in the plots that received manure in combination with BBF or MF. This study showed that all three BBFs can safely be used in potato growing on sandy soils. However, the adoption of BBFs can be stimulated by (i) solving the practical issues that occurred during the application of LFD, (ii) making sure BBFs are on the list of RENURE materials so they can legally replace mineral fertiliser, and (iii) reducing the surplus of slurry manure to stimulate the use and fair pricing of BBF products.</p>", "keywords": ["Agriculture and Food Sciences", "Technology", "QH301-705.5", "QC1-999", "NITROUS-OXIDE EMISSIONS", "environmental impact", "Environmental impact", "agricultural circularity", "Biology (General)", "agricultural circularity; sustainable agriculture; environmental impact; manure processing; GHG emissions; fertiliser replacement value", "QD1-999", "manure processing", "fertiliser replacement value", "2. Zero hunger", "Fertiliser replacement value", "MANURE", "Agricultural circularity", "T", "Physics", "Sustainable agriculture", "04 agricultural and veterinary sciences", "Engineering (General). Civil engineering (General)", "6. Clean water", "sustainable agriculture", "GHG emissions", "Chemistry", "13. Climate action", "Earth and Environmental Sciences", "RESIDUES", "0401 agriculture", " forestry", " and fisheries", "TA1-2040", "Manure processing", "NITRATE"]}, "links": [{"href": "http://www.mdpi.com/2076-3417/12/1/341/pdf"}, {"href": "https://www.mdpi.com/2076-3417/12/1/341/pdf"}, {"href": "https://doi.org/10.3390/app12010341"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Applied%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/app12010341", "name": "item", "description": "10.3390/app12010341", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/app12010341"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-12-30T00:00:00Z"}}, {"id": "10.2307/1939893", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "title": "Comparative Analyses Of Carbon Dynamics In Native And Cultivated Ecosystems", "description": "<p>Plant productivity, litter decomposition rates, and soil organic matter accumulation for winter wheat and for unbroken tallgrass prairie in Central Missouri were analyzed and compared. As measured in this 3\uffe2\uff80\uff94yr study, annual production of dry matter above\uffe2\uff80\uff94 and belowground for the cultivated system averaged slightly higher than that for the natural vegetation burned every 3\uffe2\uff80\uff944 yr. Prairie was characterized by greater year\uffe2\uff80\uff94to\uffe2\uff80\uff94year fluctuation of productivity, which in some years exceeded productivity of the cultivated system. More litter and structural biomass older than 1 yr occurred in the prairie, reflecting the perennial nature of the root system. Principal pathways of carbon transfer in both ecosystems were modeled, and mean residence time in major storage compartments estimated. Combined CO2 losses from above\uffe2\uff80\uff94 and belowground litter decay, expressed as a percentage of total soil respiration, were twice as great under wheat as for native prairie. A relatively greater fraction of net primary production was available for synthesis of soil organic matter in native prairie. Under equilibrium conditions, decomposition constants for this compartment, however, were similar. Contrasts in community structure and phenology, seasonal dynamics of litter decay, and levels of soil disturbance are suggested influences affecting transfer and storage characteristics.</p>", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"], "contacts": [{"organization": "C. L. Kucera, G. H. Wagner, G. A. Buyanovsky,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/1939893"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1939893", "name": "item", "description": "10.2307/1939893", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1939893"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1987-12-01T00:00:00Z"}}, {"id": "10.2307/1942057", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:55Z", "type": "Journal Article", "created": "2006-04-18", "title": "Influence Of Macroclimate, Landscape Position, And Management On Soil Organic-Matter In Agroecosystems", "description": "<p>We investigated patterns of soil organic matter, microbial biomass, and potential C and N mineralization in soils across landscape, regional, and management treatments in eastern Colorado. Total soil C, N, and P, microbial biomass, and C and N mineralization were highest at a northern site and on toeslope landscape positions. No\uffe2\uff80\uff90tillage and perennial grass treatments had significantly higher microbial biomass and C mineralization rates than conventional tillage treatments after only 5 yr of treatment, but only at the sites and landscape positions with high production and organic matter contents. Potential N mineralization was not different among management treatments. We suggest that a simple relationship between total soil organic matter and nutrient supply rates holds for relatively static systems represented by spatial gradients, but that transient systems undergoing losses or gains in soil organic matter may have a lag in nutrient supply responses due to immobilization dynamics.</p>", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.2307/1942057"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1942057", "name": "item", "description": "10.2307/1942057", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1942057"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1995-02-01T00:00:00Z"}}, {"id": "10.2307/1941328", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "title": "Biogeochemistry Of C, N, And P In A Soil Catena Of The Shortgrass Steppe", "description": "<p>Measurements of carbon, nitrogen, and phosphorus content were carried out in the soils of a hillslope of shortgrass steppe. Plant biomass, soil morphology, and soil physical properties were also measured. Soil morphology indicated that the site had undergone several cycles of rapid erosion and deposition. Total mass of C, N, and P increased downslope, following a trend in soil depth, but the summit A horizon had higher C, N, and organic P concentrations than the backslope, reflecting a higher clay content. Laboratory and field incubations showed that N availability increased downslope, while relative N mineralization (N mineralized: total N) decreased. Organic matter content and mineralization rate were closely coupled to physical properties of the soil, which reflect the geomorphic history of the site.</p>", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"], "contacts": [{"organization": "M. A. Stillwell, Robert G. Woodmansee, David S. Schimel,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/1941328"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1941328", "name": "item", "description": "10.2307/1941328", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1941328"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1985-02-01T00:00:00Z"}}, {"id": "10.2307/1941772", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-04-18", "description": "<p>We examined the 30\uffe2\uff80\uff94yr cumulative effects of prescribed fires at intervals of 1, 2, 3, and 4 yr in a loblolly and longleaf pine forest in the Coastal Plain of South Carolina. The fine fraction of the forest floor (Oe + Oa horizons) contained much more carbon and nitrogen per unit area in the control plots (1.7 and 0.05 kg/m2, respectively) than in the 1\uffe2\uff80\uff94yr burn interval plots (0.4 and 0.007 kg/m2, respectively). Mineral soils (0\uffe2\uff80\uff940.2 m depth) were highly variable in chemistry, and showed only slight differences across the burning treatments for nitrogen and sulfur. No trends were apparent for phosphorus in the forest floor or mineral soil; differences in acidity and extractable cations were also slight. The nutrient content of foliage was generally low, with no differences across burning intervals. Our results are consistent with earlier studies that showed the biogeochemical effects of repeated surface fires in southern pine forests are generally limited to the forest floor, with the possible exception of overall reductions in nitrogen cycling.</p>", "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/10.2307/1941772"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1941772", "name": "item", "description": "10.2307/1941772", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1941772"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1992-05-01T00:00:00Z"}}, {"id": "10.2307/1940889", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "title": "Effects Of Invasion Of An Aspen Forest (Canada) By Dendrobaena-Octaedra (Lumbricidae) On Plant-Growth", "description": "<p>Effects of invasion of an aspen forest in the Canadian Rocky Mountains by the earthworm Dendrobaena octaedra (Savigny) on nutrient mineralization, soil microflora, and plant growth were investigated during the growth period of 1992. Experimental chambers with reconstructed forest floor were placed in the field and destructively sampled after 7 and 14 wk. D. octaedra enhanced the shoot biomass of the grass Agropyron trachycaulum (Link) Malte (Poaceae) and increased the shoot\uffe2\uff80\uff94to\uffe2\uff80\uff94root ratio during early plant growth. Microbial biomass, basal respiration and respiratory quotient qCO2 in L/F layer material were reduced by D. octaedra but increased in the H layer. The nutrient (NH4+, NO3\uffe2\uff80\uff94, PO43\uffe2\uff80\uff94) content in soil was also affected by D. octaedra but the effects were small. Effects of the earthworms on soil nutrient content were masked by the great variation in the data and by leaching of nutrients from experimental chambers.</p>", "keywords": ["roots", "microbes and plants", "soil chemistry", "growth", "populus", "microflora and plants", "Invasion effects on nutrients", "Alberta", "forest soils", "microflora and plants in aspen forest", "Dendrobaena octaedra (Oligochaeta): Element cycles", "Forest and woodland", "nutrients", "biomass production", "Invasion consequences for ecosystem processes in forest soils", "impacts of invasion in aspen forest soils", "mineralization", "Annelids", "effects", "invasion impacts on ecosystem processes", "forests", "2. Zero hunger", "plant morphology", "effects on nutrients", "biomass", "soil fertility", "grasslands", "Habitat colonization", "KananaskisValley", "woodland grasslands", "Dispersal", "04 agricultural and veterinary sciences", "15. Life on land", "invasion", "Invasion of aspen forest soils effects on nutrients", "Invertebrates", "soil biology", "introduced species", "Soil habitat", "Aspen forest soils", "Nutrient mineralization", "0401 agriculture", " forestry", " and fisheries", "dendrobaena", "Impact on habitat", "root shoot ratio", "elymus trachycaulus", "soil fauna", "forest trees", "shoots"], "contacts": [{"organization": "Scheu, Stefan, Parkinson, Dennis,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/1940889"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1940889", "name": "item", "description": "10.2307/1940889", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1940889"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1994-12-01T00:00:00Z"}}, {"id": "10.2307/1941452", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-05-09", "title": "Biogeochemistry Of Adjacent Conifer And Alder-Conifer Stands", "description": "<p>To determine the long\uffe2\uff80\uff94term effect of alder on soil fertility, biogeochemical fluxes were measured and calculated for two pairs of adjacent, 55\uffe2\uff80\uff94yr\uffe2\uff80\uff94old stands dominated by conifers, primarily Douglas\uffe2\uff80\uff94fir (Pseudotsuga menziesii), and by conifers and nitrogen\uffe2\uff80\uff94fixing red alder (Alnus rubra). At a low\uffe2\uff80\uff94fertility site in the Wind River Experimental Forest in southwestern Washington, biomass of the alder\uffe2\uff80\uff94conifer stand (289 Mg/ha) exceeded that of the conifer stand (171 Mg/ha), and the aboveground net primary production (ANPP) of the alder\uffe2\uff80\uff94conifer stand (10.3 Mg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941) was more than twice that of the conifer stand (4.8 Mg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941). At a more fertile site in the Cascade Head Experimental Forest in western Oregon, both biomass and ANPP were higher than at Wind River, and biomass and ANPP were higher in the conifer stand (584 Mg/ha and 19.2 Mg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941) than in the alder\uffe2\uff80\uff94conifer stand (342 Mg/ha and 10.7 Mg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941). Nitrogen accretion in the alder\uffe2\uff80\uff94conifer stand at Wind River averaged 54 kg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941 for the 52 yr since stand establishment, with a current rate of N fixation of \uffc2\uffb075 kg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941. For the alder\uffe2\uff80\uff94conifer stand at Cascade Head, N accretion averaged 73 kg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941 for 55 yr, with a current N\uffe2\uff80\uff94fixation rate of 85 kg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941. The cycling of all nutrient appeared very malleable under the influence of alder. At Wind River, return of nutrients in fine litterfall in the alder\uffe2\uff80\uff94conifer stand ranged from 1.5 (P) to 7.9 (N) times those in the conifer stand; whereas at Cascade Head, these ratios ranged from 1.7 (S) to 4.2 (N). Nutrient\uffe2\uff80\uff94use efficiencies (kilograms of ANPP per kilogram of nutrient uptake) were generally lower for the alder\uffe2\uff80\uff94conifer stands at both sites. Denitrification appeared negligible (&lt;0.3 kg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941) in all stands. Leaching of organic plus inorganic N ranged from \uffc2\uffb05 kg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941 for the conifer stand at Wind River, to 50 Kg.ha\uffe2\uff80\uff941.yr\uffe2\uff80\uff941 for the alder\uffe2\uff80\uff94conifer stand at Cascade Head.</p>", "keywords": ["2. Zero hunger", "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/10.2307/1941452"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1941452", "name": "item", "description": "10.2307/1941452", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1941452"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1992-12-01T00:00:00Z"}}, {"id": "10.2307/1941798", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-04-18", "description": "<p>Data are presented on changes in plant and soil processes in two forest types (red pine plantation and oak\uffe2\uff80\uff94maple forest) at the Harvard Forest, Petersham, Massachusetts, in response to 3 yr of chronic N fertilization. The hardwood stand exhibited greater N limitation on biological function than the pine stand prior to fertilization as evidenced by a lower net N mineralization rate, nearly undetectable rates of net nitrification, and very low foliar N content. N additions were made in six equal applications throughout the growing season, and consisted of 5 and 15 g\uffc2\uffb0m\uffe2\uff80\uff942\uffc2\uffb0yr\uffe2\uff80\uff941 of N as ammonium nitrate. The pine stand showed larger changes than the hardwood stand for extractable N, foliar N, nitrification, and N leaching loss. Retention of added N was essentially 100% for all but the high application pine plot from which significant N leaching occurred in the 3rd yr of application. From 75 to 92% of N added to fertilized plots was retained in the soil, with larger fractions retained in the hardwood stand than the pine stand for all treatments. As hypothesized, the stands are exhibiting highly nonlinear patterns of nitrogen output in response to continuous nitrogen inputs. The implications of this nonlinearity for regional eutrophication of surface waters and atmospheric deposition control policy are discussed.</p>", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"], "contacts": [{"organization": "Paul A. Steudler, Jerry M. Melillo, Richard D. Boone, John D. Aber, Alison H. Magill,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/1941798"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1941798", "name": "item", "description": "10.2307/1941798", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1941798"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1993-02-01T00:00:00Z"}}, {"id": "10.2307/1941940", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-04-18", "description": "<p>The effects of converting lowland tropical rainforest to pasture, and of subsequent succession of pasture lands to secondary forest, were examined in the Atlantic Zone of Costa Rica. Three replicate sites of each of four land\uffe2\uff80\uff94use types representing this disturbance\uffe2\uff80\uff94recovery sequence were sampled for changes in vegetation, pedological properties, and potential nitrogen mineralization and nitrification. The four land\uffe2\uff80\uff94use types included primary forest, actively grazed pasture (10\uffe2\uff80\uff9436 yr old), abandoned pasture (abandoned 4\uffe2\uff80\uff9410 yr) and secondary forest (abandoned 10\uffe2\uff80\uff9420 yr). Conversion and succession had obvious and significant effects on canopy cover, canopy height, species composition, and species richness; it appeared that succession of secondary forests was proceeding toward a floristic composition like that of the primary forests. Significant changes in soil properties associated with conversion of forest to pasture included: (1) a decrease in acidity and increase in some base exchange properties, (2) an increase in bulk density and a concomitant decrease in porosity, (3) higher concentrations of NH4+, (4) lower concentrations of NO3\uffe2\uff80\uff94, (5) lower rates of N\uffe2\uff80\uff94mineralization, and (6) in some cases, lower rates of nitrification. Chemical changes involving cations associated with conversion from forest to pasture indicated increases in soil fertility under the pasture regimes, while changes associated with nitrogen indicated decreases in fertility. Physical changes in density and porosity were deleterious with respect to infiltration, percolation, aeration, and, ultimately, erodability. Beyond the practical aspects of land management, many of these changes are very important to carbon and nitrogen cycling and to the emission and consumption of biogenic trace gases.</p>", "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/10.2307/1941940"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1941940", "name": "item", "description": "10.2307/1941940", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1941940"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1994-05-01T00:00:00Z"}}, {"id": "10.3390/w11112245", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:21:35Z", "type": "Journal Article", "created": "2019-10-28", "title": "Irrigation-Advisor\u2014A Decision Support System for Irrigation of Vegetable Crops", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>Climate change will intensify water scarcity, and therefore irrigation must be adapted to save water. Operational tools that provide watering recommendations to end-users are needed. This work presents a new tool, Irrigation-Advisor (IA), which is based on weather forecasts and is able to separately determine soil evaporation and crop transpiration, and thus is adaptable to a broad range of agricultural situations. By calculating several statistical indicators, IA was tested against the FAO-56 crop evapotranspiration (ETcFAO) methodology using local crop coefficients. Additionally, IA recommendations were compared with current standard practices by experienced farmers (F). Six field experiments with four widely cultivated species (endive, lettuce, muskmelon and potato) were performed in Southeast Spain. Irrigation water applied, crop yield, aboveground biomass and water productivity were determined. Crop water needs underestimations (5%\u201320%) were detected when comparing IA against ETcFAO, although the index of agreement proved reasonable adjustments. The IA recommendations led to water savings up to 13% when compared to F, except for lettuce, with a 31% surplus in irrigation when using IA. Crop yield was not compromised and water productivity was increased by IA. Therefore, IA mimicked the farmers\u2032 irrigation strategies fairly well without deploying sensors on-site. Nevertheless, improvements are needed for increasing the accuracy of IA estimations.</p></article>", "keywords": ["Water-use efficiency", "0106 biological sciences", "2. Zero hunger", "Evapotranspiration", "2508.02 Evaporaci\u00f3n", "evapotranspiration", "Modeling", "Water use efficiency", "modeling", "15. Life on land", "F06 Irrigation", "3103.02 Hibridaci\u00f3n de Cultivos", "01 natural sciences", "Modelling", "Ingenier\u00eda del Terreno", "6. Clean water", "Weather forecasting", "weather forecasts", "Edafolog\u00eda y Qu\u00edmica Agr\u00edcola", "2511 Ciencias del Suelo (Edafolog\u00eda)", "Weather forecasts", "13. Climate action", "soil water balance", "water-use efficiency", "Soil water balance"]}, "links": [{"href": "http://www.mdpi.com/2073-4441/11/11/2245/pdf"}, {"href": "https://www.iris.unict.it/bitstream/20.500.11769/552480/2/Water%202019.pdf"}, {"href": "https://www.mdpi.com/2073-4441/11/11/2245/pdf"}, {"href": "https://doi.org/10.3390/w11112245"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/w11112245", "name": "item", "description": "10.3390/w11112245", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/w11112245"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-10-26T00:00:00Z"}}, {"id": "10.2307/1941987", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:54Z", "type": "Journal Article", "created": "2006-04-18", "title": "Soil Organic-Matter Recovery In Semiarid Grasslands - Implications For The Conservation Reserve Program", "description": "<p>Although the effects of cultivation on soil organic matter and nutrient supply capacity are well understood, relatively little work has been done on the long\uffe2\uff80\uff90term recovery of soils from cultivation. We sampled soils from 12 locations within the Pawnee National Grasslands of northeastern Colorado, each having native fields and fields that were historically cultivated but abandoned 50 yr ago. We also sampled fields that had been cultivated for at least 50 yr at 5 of these locations. Our results demonstrated that soil organic matter, silt content, microbial biomass, potentially mineralizable N, and potentially respirable C were significantly lower on cultivated fields than on native fields. Both cultivated and abandoned fields also had significantly lower soil organic matter and silt contents than native fields. Abandoned fields, however, were not significantly different from native fields with respect to microbial biomass, potentially mineralizable N, or respirable C. In addition, we found that the characteristic small\uffe2\uff80\uff90scale heterogeneity of the shortgrass steppe associated with individuals of the dominant plant, Bouteloua gracilis, had recovered on abandoned fields. Soil beneath plant canopies had an average of 200 g/m2 more C than between\uffe2\uff80\uff90plant locations. We suggest that 50 yr is an adequate time for recovery of active soil organic matter and nutrient availability, but recovery of total soil organic matter pools is a much slower process. Plant population dynamics may play an important role in the recovery of shortgrass steppe ecosystems from disturbance, such that establishment of perennial grasses determines the rate of organic matter recovery.</p>", "keywords": ["conservation reserve program (CRP)", "580", "2. Zero hunger", "microbial biomass", "cultivation", "soil organic matter recovery", "agroecosystem", "shortgrass steppe", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "nitrogen mineralization"]}, "links": [{"href": "https://doi.org/10.2307/1941987"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/1941987", "name": "item", "description": "10.2307/1941987", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/1941987"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1995-08-01T00:00:00Z"}}, {"id": "10.2307/2260102", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:55Z", "type": "Journal Article", "created": "2006-06-17", "title": "Response Of Adenostoma-Fasciculatum And Ceanothus-Greggii Chaparral To Nutrient Additions", "description": "(1) The purposes of this study were to determine if small quantities of fertilizer enhance the biomass production of annual plants and shrubs and influence the flowering and branching patterns of shrubs in chaparral vegetation. (2) Urea (8 g N m-2), superphosphate (4 g P m-2) and urea plus superphosphate ((8 g N + 4 g P) m-2), were applied in early spring 1978 to 26-year-old chaparral, with Adenostoma fasciculatum and Ceanothus greggii the predominant shrubs. Adenostoma responded to the three treatments by producing larger shoots in 1978. In 1979, without additional fertilizer, only the N treatment remained effective. For Ceanothus the largest response was to the P and N + P treatments in 1978. In 1979 shoots in all treatments were similar to or smaller than those in the control plots. (3) Phosphorus addition significantly increased the number of inflorescences in Adenostoma, although this effect did not last into the second year after fertilization. Likewise, N, P, and N + P produced a significant increase in the number of new shoots m-2 of canopy. In Ceanothus a fertilizer effect was not found on either inflorescence growth or the number of new shoots. (4) The above-ground biomass of annual species was significantly increased in 1978 and 1979 by N, and particularly by N + P. Phosphorus reduced the growth of annual species, especially grasses.", "keywords": ["0106 biological sciences", "2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water"], "contacts": [{"organization": "G. S. McMaster, W. M. Jow, J. Kummerow,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/2260102"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/The%20Journal%20of%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2260102", "name": "item", "description": "10.2307/2260102", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2260102"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1982-11-01T00:00:00Z"}}, {"id": "10.5194/isprs-archives-XLIII-B2-2020-659-2020", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:22:19Z", "type": "Journal Article", "created": "2020-08-12", "title": "CLASSIFICATION OF UAV-BASED PHOTOGRAMMETRIC POINT CLOUDS OF RIVERINE SPECIES USING MACHINE LEARNING ALGORITHMS: A CASE STUDY IN THE PALANCIA RIVER, SPAIN", "description": "<p>Abstract. The management of riverine areas is fundamental due to their great environmental importance. The fast changes that occur in these areas due to river mechanics and human pressure makes it necessary to obtain data with high temporal and spatial resolution. This study proposes a workflow to map riverine species using Unmanned Aerial Vehicle (UAV) imagery. Based on RGB point clouds, our work derived simple geometric and spectral metrics to classify an area of the public hydraulic domain of the river Palancia (Spain) in five different classes: Tamarix gallica L. (French tamarisk), Pinus halepensis Miller (Aleppo pine), Arundo donax L. (giant reed), other riverine species and ground. A total of six Machine Learning (ML) methods were evaluated: Decision Trees, Extra Trees, Multilayer Perceptron, K-Nearest Neighbors, Random Forest and Ridge. The method chosen to carry out the classification was Random Forest, which obtained a mean score cross-validation close to 0.8. Subsequently, an object-based reclassification was done to improve this result, obtaining an overall accuracy of 83.6%, and individually a producer\uffe2\uff80\uff99s accuracy of 73.8% for giant reed, 87.7% for Aleppo pine, 82.8% for French tamarisk, 93.5% for ground and 80.1% for other riverine species. Results were promising, proving the feasibility of using this cost-effective method for periodic monitoring of riverine species. In addition, the proposed workflow is easily transferable to other tasks beyond riverine species classification (e.g., green areas detection, land cover classification) opening new opportunities in the use of UAVs equipped with consumer cameras for environmental applications.                     </p>", "keywords": ["Technology", "Point cloud classification", " UAV", " Structure from Motion", " Random forest", " Riverine species", "T", "UAV", "0211 other engineering and technologies", "02 engineering and technology", "15. Life on land", "Engineering (General). Civil engineering (General)", "01 natural sciences", "Structure from Motion", "TA1501-1820", "13. Climate action", "INGENIERIA CARTOGRAFICA", " GEODESIA Y FOTOGRAMETRIA", "Applied optics. Photonics", "Riverine species", "TA1-2040", "Point cloud classification", "Random forest", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://isprs-archives.copernicus.org/articles/XLIII-B2-2020/659/2020/isprs-archives-XLIII-B2-2020-659-2020.pdf"}, {"href": "https://doi.org/10.5194/isprs-archives-XLIII-B2-2020-659-2020"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/The%20International%20Archives%20of%20the%20Photogrammetry%2C%20Remote%20Sensing%20and%20Spatial%20Information%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5194/isprs-archives-XLIII-B2-2020-659-2020", "name": "item", "description": "10.5194/isprs-archives-XLIII-B2-2020-659-2020", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/isprs-archives-XLIII-B2-2020-659-2020"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-08-12T00:00:00Z"}}, {"id": "10.2307/2269357", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:55Z", "type": "Journal Article", "created": "2006-04-18", "title": "Fundamental Differences Between Conventional And Organic Tomato Agroecosystems In California", "description": "<p>In an integrated, multidisciplinary study we compared ecological characteristics and productivity of commercial farms categorized as either organic (ORG) or conventional (CNV) based on their use of synthetic fertilizers and pesticides or reliance on organic soil amendments and biological pest control. We measured belowground parameters: various soil chemical and biological properties and root disease severity; common agronomic indicators: biomass, fruit yield and insect pest damage; and community level indicators, including arthropod diversity and soil microbial activity and diversity. CNV and ORG production systems could not be distinguished based on agronomic criteria such as fruit yield and arthropod pest damage levels. However, differences were demonstrated in many soil, plant, disease, and diversity indicators suggesting that the ecological processes determining yields and pest levels in these two management systems are distinct. In particular, nitrogen mineralization potential and microbial and parasitoid abundance and diversity were higher in ORG farms. Differences between the agroecosystems were sufficiently robust to be distinguished from environmental variation and suggest that biological processes compensated for reductions in the use of synthetic fertilizers and pesticides.</p>", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.2307/2269357"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2269357", "name": "item", "description": "10.2307/2269357", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2269357"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1995-11-01T00:00:00Z"}}, {"id": "10.2307/2403568", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:55Z", "type": "Journal Article", "created": "2006-06-17", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "01 natural sciences", "0105 earth and related environmental sciences"], "contacts": [{"organization": "M. Clarholm, R. Pettersson, G. Johansson, B. Sohlenius, K. Paustian, T. Lindberg, A.-C. Hansson, J. Lagerl\u00f6f, O. Andren,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/2403568"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/The%20Journal%20of%20Applied%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2403568", "name": "item", "description": "10.2307/2403568", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2403568"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1990-04-01T00:00:00Z"}}, {"id": "10.2307/2389087", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:55Z", "type": "Journal Article", "created": "2006-05-04", "title": "At What Temporal Scales Does Disturbance Affect Belowground Nutrient Pools?", "description": "We monitored the effects of both harvesting aboveground biomass and Hurricane Hugo on soil chemical and physical properties, and live and dead root biomass over 6 yr in a subtropical wet forest in Puerto Rico. Our goal was to determine how belowground processes changed at different temporal scales including the immediate period prior to revegetation (9 wk), the intermediate period of initial regrowth (9 mo), and the longer-term reorganization of the vegetation and biogeochemical cycling (6 yr). Harvesting resulted in temporary increases in the availability of exchangeable nutrients, but forest floor and soil nutrient pools had generally returned to pre-harvest values over a 9 wk period. Significant amounts of K moved through the soil over this time period, amounting to 29-46 kg/ha-1, and resulting in a reduction in the size of the exchangeable soil K pool. The hurricane deposited approximately 845 kg/ha-1 of forest floor mass and considerable nutrients on the soil surface, and increased soil N03-N and exchangeable K pools, but in all cases, pool sizes had returned to pre-hurricane values within 9 mo. Examination of the data on an annual time step over the 6 yr period revealed an increase in soil cation pools and a significant decrease in soil pH. No change in soil organic matter was detected at any time step following the disturbances. Live fine root biomass was dramatically reduced as a result of the hurricane, and was only beginning to show signs of recovery near the end of the 6 yr experiment.", "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/10.2307/2389087"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biotropica", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2389087", "name": "item", "description": "10.2307/2389087", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2389087"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1996-12-01T00:00:00Z"}}, {"id": "10.2307/2402776", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:55Z", "type": "Journal Article", "created": "2006-06-17", "title": "Influence Of Arthropods And Earthworms Upon Root-Growth Of Direct Drilled Cereals", "description": "(1) Intact profiles of soil from a field that had been direct drilled for 5 yr and from the same soil that had been regularly ploughed were sterilized with dichloropropane-dichloropropene (D-D?). (2) After aeration, profiles from the direct drilled soil were inoculated with either Lumbricus terrestris, Allolobophora longa, a mixture of A. caliginosa and A. chlorotica, or a mixture of soil arthropods, in numbers similar to average populations. Two sterilized profiles from direct drilled soil and two from ploughed soil were left without animals. (3) Barley seeds were sown in slits to simulate direct drilling. The numbers of seedlings emerging, heights of plants and oven-dry weights of roots were all greater in the profiles from ploughed soil, and in those from direct drilled soil inoculated with animals, than in those with no animals. (4) Root distributions were closely correlated with the characteristic zones of activity of the animals.", "keywords": ["2. Zero hunger", "Ecology", "0401 agriculture", " forestry", " and fisheries", "biodiversity conservation", "04 agricultural and veterinary sciences"], "contacts": [{"organization": "Edwards, C. A., Lofty, J. R.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/2402776"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/The%20Journal%20of%20Applied%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2402776", "name": "item", "description": "10.2307/2402776", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2402776"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1978-12-01T00:00:00Z"}}, {"id": "10.2307/2423857", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:55Z", "type": "Journal Article", "created": "2006-04-24", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "01 natural sciences"], "contacts": [{"organization": "John F. Hosner, David L. Graney,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/2423857"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/American%20Midland%20Naturalist", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2423857", "name": "item", "description": "10.2307/2423857", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2423857"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1970-10-01T00:00:00Z"}}, {"id": "10.2307/2423857,", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:55Z", "type": "Journal Article", "created": "2006-04-24", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "01 natural sciences"], "contacts": [{"organization": "John F. Hosner, David L. Graney,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/2423857,"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/American%20Midland%20Naturalist", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2423857,", "name": "item", "description": "10.2307/2423857,", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2423857,"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1970-10-01T00:00:00Z"}}, {"id": "10.2307/2425212", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:55Z", "type": "Journal Article", "created": "2006-04-24", "title": "Nitrogen Turnover In A Ragweed-Dominated 1st-Year Old Field In Southern Indiana", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "01 natural sciences"], "contacts": [{"organization": "Peter M. Vitousek", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/2425212"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/American%20Midland%20Naturalist", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2425212", "name": "item", "description": "10.2307/2425212", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2425212"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1983-07-01T00:00:00Z"}}, {"id": "10.2307/2640985", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:56Z", "type": "Journal Article", "created": "2006-04-17", "description": "Elevated atmospheric CO2 has the potential to increase the production and alter the chemistry of organic substrates entering soil from plant production, the magnitude of which is constrained by soil-N availability. Because microbial growth in soil is limited by substrate inputs from plant production, we reasoned that changes in the amount and chemistry of these organic substrates could affect the composition of soil microbial com- munities and the cycling of N in soil. We studied microbial community composition and soil-N transformations beneath Populus tremuloides Michx. growing under experimental atmospheric CO2 (35.7 and 70.7 Pa) and soil-N-availability (low N 5 61 ng N\u00b7g 21 \u00b7d 21 and high N 5 319 ng N\u00b7g 21 \u00b7d 21 ) treatments. Atmospheric CO2 concentration was modified in large, open-top chambers, and we altered soil-N availability in open-bottom root boxes by mixing different proportions of A and C horizon material. We used phospholipid fatty-acid analysis to gain insight into microbial community composition and coupled this analysis to measurements of soil-N transformations using 15 N-pool dilution techniques. The infor- mation presented here is part of an integrated experiment designed to elucidate the phys- iological mechanisms controlling the flow of C and N in the plant-soil system. Our ob- jectives were (1) to determine whether changes in plant growth and tissue chemistry alter microbial community composition and soil-N cycling in response to increasing atmospheric CO2 and soil-N availability and (2) to integrate the results of our experiment into a synthesis of elevated atmospheric CO2 and the cycling of C and N in terrestrial ecosystems. After 2.5 growing seasons, microbial biomass, gross N mineralization, microbial im- mobilization, and nitrification (gross and net) were equivalent at ambient and elevated CO2, suggesting that increases in fine-root production and declines in fine-root N concentration were insufficient to alter the influence of native soil organic matter on microbial physiology; this was the case in both low- and high-N soil. Similarly, elevated CO2 did not alter the proportion of bacterial, actinomycetal, or fungal phospholipid fatty acids in low-N or high-N soil, indicating that changes in substrate input from greater plant growth under elevated CO2 did not alter microbial community composition. Our results differ from a substantial number of studies reporting increases and decreases in soil-N cycling under elevated CO 2. From our analysis, it appears that soil-N cycling responds to elevated atmospheric CO 2 in experimental situations where plant roots have fully colonized the soil and root-associated C inputs are sufficient to modify the influence of native soil organic matter on microbial physiology. In young developing ecosystems where plant roots have not fully exploited the soil, microbial metabolism appears to be regulated by relatively large pools of soil organic matter, rather than by the additional input of organic substrates under elevated CO 2.", "keywords": ["measurement-", "soil microorganisms", "Ecology and Evolutionary Biology", "nitrogen-: cycling-", "feedback", "microbial community composition", "techniques-", "Environmental-Sciences)", "01 natural sciences", "litter-plant", "biomass-", "gross and net", "124-38-9: CARBON DIOXIDE", "Spermatophytes-", "cycling-", "soil-organic-matter", "mineralization", "Spermatophyta-", "responses-", "phospholipid-fatty-acids", "2. Zero hunger", "Climatology- (Environmental-Sciences)", "Angiosperms-", "Angiospermae-", "Plants-", "global climate change", "microbial immobilization", "nutrient-", "Soil-Science", "6. Clean water", "metabolism-", "soil-N transformations", "transformation-", "substrates-", "7727-37-9: NITROGEN", "atmosphere-", "elevated atmospheric", "570", "nitrification-", "nitrogen immobilization", "Science", "Vascular-Plants", "poplars-", "phospholipid fatty acids (PFLAs)", "carbon-dioxide", "growth-", "soil-microbial-community-composition", "Salicaceae-: Dicotyledones-", "microbial-flora", "Populus tremuloides", "Plantae-", "organic-matter", "consortia-", "0105 earth and related environmental sciences", "communities-", "ecosystem", "analysis-", "atmospheric CO2 and soil-N availability", "soil-availability", "mineralization-", "carbon dioxide", "fatty-acids", "15. Life on land", "substrate-input", "Populus-tremuloides (Salicaceae-)", "13. Climate action", "roots-", "Terrestrial-Ecology (Ecology-", "composition-", "Dicots-", "immobilization-", "seasons-", "ecosystems-"], "contacts": [{"organization": "Zak, Donald R., Pregitzer, Kurt S., Curtis, Peter S., Holmes, William E.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/2640985"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2640985", "name": "item", "description": "10.2307/2640985", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2640985"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2000-02-01T00:00:00Z"}}, {"id": "10754/680032", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:25:20Z", "type": "Journal Article", "created": "2022-07-26", "title": "Pollution and edaphic factors shape bacterial community structure and functionality in historically contaminated soils", "description": "Studies about biodegradation potential in soils often refer to artificially contaminated and simplified systems, overlooking the complexity associated with contaminated sites in a real context. This work aims to provide a holistic view on microbiome assembly and functional diversity in the model site SIN Brescia-Caffaro (Italy), characterized by historical and uneven contamination by organic and inorganic compounds. Here, physical and chemical analyses and microbiota characterization were applied on one-hundred-twenty-seven soil samples to unravel the environmental factors driving bacterial community assembly and biodegradation potential in three former agricultural fields. Chemical analyses showed a patchy distribution of metals, metalloids and polychlorinated biphenyls (PCB) and allowed soil categorization according to depth and area of collections. Likewise, the bacterial community structure, described by molecular fingerprinting and 16S rRNA gene analyses, was significantly different according to collection site and depth. Pollutant concentrations (i.e., hexachloro-biphenyls, arsenic and mercury), nitrogen content and parameters related to soil texture were identified as main drivers of microbiota assembly, being significantly correlated to bacterial community composition. Moreover, bacteria putatively involved in the aerobic degradation of PCBs were enriched over the total bacterial community in topsoils, where the highest activity was recorded using fluorescein hydrolysis as proxy. Metataxonomic analyses revealed the presence of bacteria having metabolic pathways related to PCB degradation and tolerance to heavy metals and metalloids in the topsoil samples collected in all areas. Overall, the provided dissection of soil microbiota structure and its degradation potential in the SIN Brescia-Caffaro can contribute to target specific areas for rhizoremediation implementation. Metagenomics studies could be implemented in the future to understand if specific degradative pathways are present in historically polluted sites characterized by the co-occurrence of multiple classes of contaminants.", "keywords": ["0301 basic medicine", "2. Zero hunger", "0303 health sciences", "15. Life on land", "Polychlorinated Biphenyls", "6. Clean water", "Soil", "03 medical and health sciences", "Biodegradation", " Environmental", "13. Climate action", "RNA", " Ribosomal", " 16S", "Environmental selection; Heavy metals; PCB; Soil microbiota; bphA", "Soil Pollutants", "Soil Microbiology", "Metalloids"]}, "links": [{"href": "https://air.unimi.it/bitstream/2434/935372/3/Mapelli%2bet%2bal_MS_04032022.pdf"}, {"href": "https://air.unimi.it/bitstream/2434/935372/4/1-s2.0-S0944501322001847-main.pdf"}, {"href": "https://doi.org/10754/680032"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microbiological%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10754/680032", "name": "item", "description": "10754/680032", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10754/680032"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-10-01T00:00:00Z"}}, {"id": "10.2307/2963492", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:56Z", "type": "Journal Article", "created": "2006-04-26", "title": "Temperature And Plant Species Control Over Litter Decomposition In Alaskan Tundra", "description": "<p>I compared effects of increased temperature and litter from different Alaskan tundra plant species on cycling of carbon and nitrogen through litter and soil in microcosms. Warming between 4\uffc2\uffb0 and 10\uffc2\uffb0C significantly increased rates of soil and litter respiration, litter decomposition, litter nitrogen release, and soil net nitrogen mineralization. Thus, future warming will directly increase rates of carbon and nitrogen cycling through litter and soil in tundra. In addition, differences among species' litter in rates of decomposition, N release, and effects on soil net nitrogen mineralization were sometimes larger than differences between the two temperature treatments within a species. Thus, changes in plant community structure and composition associated with future warming will have important consequences for how elements cycle through litter and soil in tundra. In general, species within a growth form (graminoids, evergreen shrubs, deciduous shrubs, and mosses) were more similar in their effects on decomposition than were species belonging to different growth forms, with graminoid litter having the fastest rate and litter of deciduous shrubs and mosses having the slowest rates. Differences in rates of litter decomposition were more related to carbon quality than to nitrogen concentration. Increased abundance of deciduous shrubs with future climate warming will promote carbon storage, because of their relatively large allocation to woody stems that decompose slowly. Changes in moss abundance will also have important consequences for future carbon and nitrogen cycling, since moss litter is extremely recalcitrant and has a low potential to immobilize nitrogen.</p>", "keywords": ["13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"], "contacts": [{"organization": "Sarah E. Hobbie, Sarah E. Hobbie,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/2963492"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Monographs", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2963492", "name": "item", "description": "10.2307/2963492", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2963492"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1996-11-01T00:00:00Z"}}, {"id": "10.3390/s21217406", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:21:32Z", "type": "Journal Article", "created": "2021-11-09", "title": "A Calibration/Disaggregation Coupling Scheme for Retrieving Soil Moisture at High Spatio-Temporal Resolution: Synergy between SMAP Passive Microwave, MODIS/Landsat Optical/Thermal and Sentinel-1 Radar Data", "description": "<p>Soil moisture (SM) data are required at high spatio-temporal resolution\uffe2\uff80\uff94typically the crop field scale every 3\uffe2\uff80\uff936 days\uffe2\uff80\uff94for agricultural and hydrological purposes. To provide such high-resolution SM data, many remote sensing methods have been developed from passive microwave, active microwave and thermal data. Despite the pros and cons of each technique in terms of spatio-temporal resolution and their sensitivity to perturbing factors such as vegetation cover, soil roughness and meteorological conditions, there is currently no synergistic approach that takes advantage of all relevant (passive, active microwave and thermal) remote sensing data. In this context, the objective of the paper is to develop a new algorithm that combines SMAP L-band passive microwave, MODIS/Landsat optical/thermal and Sentinel-1 C-band radar data to provide SM data at the field scale at the observation frequency of Sentinel-1. In practice, it is a three-step procedure in which: (1) the 36 km resolution SMAP SM data are disaggregated at 100 m resolution using MODIS/Landsat optical/thermal data on clear sky days, (2) the 100 m resolution disaggregated SM data set is used to calibrate a radar-based SM retrieval model and (3) the so-calibrated radar model is run at field scale on each Sentinel-1 overpass. The calibration approach also uses a vegetation descriptor as ancillary data that is derived either from optical (Sentinel-2) or radar (Sentinel-1) data. Two radar models (an empirical linear regression model and a non-linear semi-empirical formulation derived from the water cloud model) are tested using three vegetation descriptors (NDVI, polarization ratio (PR) and radar coherence (CO)) separately. Both models are applied over three experimental irrigated and rainfed wheat crop sites in central Morocco. The field-scale temporal correlation between predicted and in situ SM is in the range of 0.66\uffe2\uff80\uff930.81 depending on the retrieval configuration. Based on this data set, the linear radar model using PR as a vegetation descriptor offers a relatively good compromise between precision and robustness all throughout the agricultural season with only three parameters to set. The proposed synergistical approach combining multi-resolution/multi-sensor SM-relevant data offers the advantage of not requiring in situ measurements for calibration.</p>", "keywords": ["550", "Chemical technology", "0211 other engineering and technologies", "synergy", "SMAP", "TP1-1185", "04 agricultural and veterinary sciences", "02 engineering and technology", "15. Life on land", "630", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "Article", "DISPATCH", "disaggregation", "[SDU.STU.HY] Sciences of the Universe [physics]/Earth Sciences/Hydrology", "Sentinel-1", "0401 agriculture", " forestry", " and fisheries", "[SDU.STU.HY]Sciences of the Universe [physics]/Earth Sciences/Hydrology", "[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces", "soil moisture", "environment", "Landsat"]}, "links": [{"href": "http://www.mdpi.com/1424-8220/21/21/7406/pdf"}, {"href": "https://www.mdpi.com/1424-8220/21/21/7406/pdf"}, {"href": "https://doi.org/10.3390/s21217406"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Sensors", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/s21217406", "name": "item", "description": "10.3390/s21217406", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/s21217406"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-11-08T00:00:00Z"}}, {"id": "10.2307/2845916", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:56Z", "type": "Journal Article", "created": "2006-06-16", "title": "Plant Growth And Soil Processes In Temperate Grassland Communities At Elevated Co2", "description": "Turves of a Mollic Psammaquent soil were used in controlled environment rooms to examine the response of managed temperate pasture communities to 350, 525 or 700 p.p.m. CO2. Yield of herbage (regrowth over 3-week intervals) increased only slightly with higher C02; however, the botan- ical composition was markedly different. At elevated CO2 Paspalum dilatatum (C4) and Lolium perenne (C3) declined as a proportion of harvested yield despite a stimulation of single leaf photosynthesis that was comparable to that found in Trifolium repens, a species that increased in abundance. Changes in species composition were largely a consequence of C02-induced differences in axillary bud activity. Net primary productivity below-ground was stimulated by CO2. Soil C02-C production was greater in elevated CO2 treatments, and was consistent with a greater input of herbage and root mass and/or metabolites and of more readily decom- posable material. Levels of microbial biomass were un- changed, but enchytraeids were more abundant at elevated CO2. Tracking of 14CO2 into the various C pools also indicated a more rapid turnover of C at elevated CO2 but no change in pool sizes. No consistent effects on net mineralization of N were observed.", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"], "contacts": [{"organization": "E. M. Glasgow, D. J. Ross, K. R. Tate, Harry Clark, C. C. Bell, P. C. D. NEWTONt, G. W. Yeates, S. Saggar,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/2845916"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Biogeography", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/2845916", "name": "item", "description": "10.2307/2845916", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/2845916"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1995-03-01T00:00:00Z"}}, {"id": "10.3390/su10082886", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:21:33Z", "type": "Journal Article", "created": "2018-08-14", "title": "Identifying Gaps between the Legislative Tools of Soil Protection in the EU Member States for a Common European Soil Protection Legislation", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>To ensure an adequate level of protection in the European Union (EU), the European Commission (EC) adopted the Soil Thematic Strategy in 2006, including a proposal for a Soil Framework Directive (the Directive). However, a minority of Member States (United Kingdom, Germany, France, Austria, and The Netherlands) could not agree on the text of the proposed Directive. Consequently, the EC decided to withdraw the proposal in 2014. In the more than 10 years that have passed since the initial proposal, a great number of new evidences on soil degradation and its negative consequences, have proved the necessity of a common European soil protection Directive. This study is aimed at specifying the possible obstacles, differences, and gaps in legislature and administration in the countries that formed the blocking minority, which resulted in the refusal of the Directive. The individual legislations of the opposing countries on the matter, were summarized and compared with the goals set by the Directive, in three highlighted aspects: (1) soil-dependent threats, (2) contamination, and (3) sealing. We designed a simple schematic evaluation system to show the basic levels of differences and similarities. We found that the legislative regulations concerning soil-dependent degradation and contamination issues in the above countries were generally well defined, complementary, and thorough. A common European legislation can be based on harmonised approaches between them, focusing on technical implementations. In the aspect of sealing we found recommendations, principles, and good practices rather than binding regulations in the scrutinised countries. Soil sealing is an issue where the proposed Directive\u2019s measures, could have exceeded those of the Member States.</p></article>", "keywords": ["0211 other engineering and technologies", "02 engineering and technology", "soil functions", "15. Life on land", "soil threats", "01 natural sciences", "soil degradation", "contamination", "13. Climate action", "soil framework directive", "11. Sustainability", "soil policy", "sealing", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://www.mdpi.com/2071-1050/10/8/2886/pdf"}, {"href": "https://www.mdpi.com/2071-1050/10/8/2886/pdf"}, {"href": "https://doi.org/10.3390/su10082886"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Sustainability", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/su10082886", "name": "item", "description": "10.3390/su10082886", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/su10082886"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-08-14T00:00:00Z"}}, {"id": "10.2307/3237009", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:56Z", "type": "Journal Article", "created": "2007-02-03", "title": "Effects Of Nutrients And Shade On Tree-Grass Interactions In An East African Savanna", "description": "<p>Abstract.  Savanna trees have a multitude of positive and negative effects on understorey grass production, but little is known about how these effects interact. We report on a fertilization and shading experiment carried out in a Tanzanian tropical dry savanna around Acacia tortilis trees. In two years of study there was no difference in grass production under tree canopies or in open grassland. Fertilization, however, indicate that trees do affect the nutrient limitation of the grass layer with an N\uffe2\uff80\uff90limited system in open grassland to a P\uffe2\uff80\uff90limited system under the trees. The N:P ratios of grass gave a reliable indication of the nature of nutrient limitation, but only when assessed at the end of the wet season. Mid\uffe2\uff80\uff90wet season nutrient concentrations of grasses were higher under than outside the tree canopy, suggesting that factors other than nutrients limit grass production. A shading experiment indicated that light may be such a limiting factor during the wet season when water and nutrients are sufficiently available. However, in the dry season when water is scarce, the effect of shade on plant production became positive. We conclude that whether trees increase or decrease production of the herbaceous layer depends on how positive effects (increased soil fertility) and negative effects (shade and soil water availability) interact and that these interactions may significantly change between wet and dry seasons.</p>", "keywords": ["2. Zero hunger", "0106 biological sciences", "productivity", "growth", "04 agricultural and veterinary sciences", "15. Life on land", "herbivores", "01 natural sciences", "nitrogen", "kenya", "vegetation", "limitation", "0401 agriculture", " forestry", " and fisheries", "light-intensity", "competition", "environments"]}, "links": [{"href": "https://doi.org/10.2307/3237009"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Vegetation%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/3237009", "name": "item", "description": "10.2307/3237009", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/3237009"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2001-02-24T00:00:00Z"}}, {"id": "10.2307/3237333", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:56Z", "type": "Journal Article", "created": "2006-05-07", "title": "Nutrient Limitation In Species-Rich Lowland Fens", "description": "<p>Abstract.  Nitrogen, phosphorus and potassium were supplied to some Belgian fens of varying nutrient status and productivity. Plant growth in the lowest productive fen with a species\uffe2\uff80\uff90rich Caricion davallianae vegetation was strongly P\uffe2\uff80\uff90limited. N was ineffective when applied alone, but increased the effect of P\uffe2\uff80\uff90addition when applied together. Summer biomass and plant nutrient concentrations were monitored for four years, and showed partial recovery of nutrient limitation. In a more productive fen dominated by Carex lasiocarpa and in a fen meadow, nutrient limitation was less strong. N limited growth in the productive fen, and N and K were co\uffe2\uff80\uff90limiting in the fen meadow. The P\uffe2\uff80\uff90concentration in the productive fen vegetation showed a marked increase after P\uffe2\uff80\uff90fertilization, but it did not result in higher standing crop. The significance of P\uffe2\uff80\uff90limitation for the conservation of species rich low productive fens is discussed. P\uffe2\uff80\uff90limitation may be an essential feature in the conservation of low productive rich fens: because it is less mobile in the landscape than N and/or because it is an intrinsic property of this vegetation type. Plant nutrient concentrations and N:P\uffe2\uff80\uff90ratios may be used as an indication for the presence and type of nutrient limitation in the vegetation. We found N:P\uffe2\uff80\uff90ratios of 23 to 31 for a P\uffe2\uff80\uff90limited site and 8 to 15 in N\uffe2\uff80\uff90limited sites. This was in agreement with critical values from the literature: N:P &gt; ca. 20 for P\uffe2\uff80\uff90limitation and N:P &lt; 14 for N\uffe2\uff80\uff90limitation. Thus, this technique appears valid in the vegetation types that were studied here.</p>", "keywords": ["0106 biological sciences", "2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"], "contacts": [{"organization": "Boeye, Dirk, Verhagen, B., van Haesebroeck, V., Verheyen, Rudolf Frans,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/3237333"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Vegetation%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/3237333", "name": "item", "description": "10.2307/3237333", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/3237333"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1997-06-01T00:00:00Z"}}, {"id": "10.3390/su11143836", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:21:33Z", "type": "Journal Article", "created": "2019-07-15", "title": "Maximizing Environmental Impact Savings Potential Through Innovative Biorefinery Alternatives: An Application of the TM-LCA Framework for Regional Scale Impact Assessment", "description": "<p>In order to compare the maximum potential environmental impact savings that may result from the implementation of innovative biorefinery alternatives at a regional scale, the Territorial Metabolism-Life Cycle Assessment (TM-LCA) framework is implemented. With the goal of examining environmental impacts arising from technology-to-region (territory) compatibility, the framework is applied to two biorefinery alternatives, treating a mixture of cow manure and grape marc. The biorefineries produce either biogas alone or biogas and polyhydroxyalkanoates (PHA), a naturally occurring polymer. The production of PHA substitutes either polyethylene terephthalate (PET) or biosourced polylactide (PLA) production. The assessment is performed for two regions, one in Southern France and the other in Oregon, USA. Changing energy systems are taken into account via multiple dynamic energy provision scenarios. Territorial scale impacts are quantified using both LCA midpoint impact categories and single score indicators derived through multi-criteria decision assessment (MCDA). It is determined that in all probable future scenarios, a biorefinery with PHA-biogas co-production is preferable to a biorefinery only producing biogas. The TM-LCA framework facilitates the capture of technology and regionally specific impacts, such as impacts caused by local energy provision and potential impacts due to limitations in the availability of the defined feedstock leading to additional transport.</p>", "keywords": ["Biogas", "02 engineering and technology", "/dk/atira/pure/sustainabledevelopmentgoals/responsible_consumption_and_production; name=SDG 12 - Responsible Consumption and Production", "7. Clean energy", "territorial metabolism", "12. Responsible consumption", "Life cycle assessment", "/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energy; name=SDG 7 - Affordable and Clean Energy", "life cycle assessment", "biogas", "agricultural residues", "0202 electrical engineering", " electronic engineering", " information engineering", "Agricultural residues", "Multi-criteria decision assessment", "biorefinery", "2. Zero hunger", "Territorial metabolism", "Polyhydroxyalkanoates", "polyhydroxyalkanoates", "Biorefinery", "Bioplastic", "multi-criteria decision assessment", "13. Climate action", "8. Economic growth", "bioplastic"]}, "links": [{"href": "http://www.mdpi.com/2071-1050/11/14/3836/pdf"}, {"href": "https://www.mdpi.com/2071-1050/11/14/3836/pdf"}, {"href": "https://doi.org/10.3390/su11143836"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Sustainability", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/su11143836", "name": "item", "description": "10.3390/su11143836", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/su11143836"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-07-13T00:00:00Z"}}, {"id": "10.2307/3544068", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:56Z", "type": "Journal Article", "created": "2006-11-16", "description": "Both increased soil acidity induced by artificial acid 'rain' (diluted sulphuric acid), and lowered soil acidity after liming (CaCO3), influenced the abundance of several species and groups of Acari. Liming reduced the abundance of various Oribatei (Tectocepheus velatus, Nothrus silvestris, Nanhermannia sp., Brachychochthonius zelawaiensis), the Gamasina species Parazercon sarekensis, as well as total Oribatei, total Mesostigmata, and total Acari. Trachytes sp., however, increased on limed plots. Acidification gave increased abundance of T. velatus and 'Brachychthoniidae except B. zelawaiensis', while the abundance of P. sarekensis, Trachytes sp., total Mesostigmata, total Prostigmata and total Acari decreased. Generally, increased soil acidity gave higher dominance of Oribatei. Liming, and to a smaller degree acidification, changed the vertical distribution pattern in Oribatei, giving a higher percentage in the Ae layer (3-6 cm) compared to the 0 layer (0-3 cm). However, in Prostigmata, liming resulted in an increased percentage in the 0 layer compared to the Ae layer. The observed results cannot be explained in relation to predation pressure by the larger Gamasina, nor to the amount of fungal hyphae. It is suggested that reproduction success in several species is related to soil pH.", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"], "contacts": [{"organization": "Sigmund H\u00e5gvar, Terje Amundsen, Sigmund Hagvar,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/3544068"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oikos", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/3544068", "name": "item", "description": "10.2307/3544068", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/3544068"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1981-07-01T00:00:00Z"}}, {"id": "10.2307/3237027", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:56Z", "type": "Journal Article", "created": "2006-05-07", "title": "Nutrient Supply In Undrained And Drained Calthion Meadows", "description": "<p>Abstract.  Plant species\uffe2\uff80\uff90rich Calthion meadows on mesotrophic fen peat soil extensively cut for hay are among the endangered semi\uffe2\uff80\uff90natural vegetation types in northwestern Europe. They are often badly affected by lowering the groundwater table (drainage) and fertilization.</p><p>In a comparative study of an undrained site with a Calthion meadow and an adjacent drained site, availability of N, P and K was biologically assessed under field conditions (for two years) as well as in a greenhouse (for 18 weeks) by measuring shoot responsiveness. Also, experimental wetting of intact turf samples taken from both sites was applied in order to study the interaction between nutrient supply and anaerobic soil conditions. It was concluded that the above\uffe2\uff80\uff90ground phytomass yield in the undrained site was restricted by a major shortage of N\uffe2\uff80\uff90supply and a moderate shortage of K\uffe2\uff80\uff90supply by the fen peat soil. The above\uffe2\uff80\uff90ground phytomass yield of the drained site was only reduced by a strongly limited supply of K by the soil. The extent of K\uffe2\uff80\uff90deficiency was larger for the drained site. No P\uffe2\uff80\uff90deficiency was observed in any of the drained or undrained sites. Rewetting turf samples, taken from the drained site, did not change above\uffe2\uff80\uff90ground phytomass yields, suggesting that nutrient supplies were not affected by rewetting. Leaching has likely resulted in a strong reduction of K\uffe2\uff80\uff90supply in the drained site. It is assumed that a shortage in K\uffe2\uff80\uff90supply from the peat soil may have become an important environmental constraint for characteristic plant species of Calthion meadows. This may hamper the development of this meadow type on drained peat soils after rewetting by groundwater discharge.</p>", "keywords": ["DYNAMICS", "0106 biological sciences", "NRS", "restoration", "GRASSLAND", "LIMITATION", "GROUNDWATER", "fen peat", "15. Life on land", "01 natural sciences", "SOIL", "VEGETATION PATTERNS", "ADLIB-ART-1990", "fertilization", "ITC-ISI-JOURNAL-ARTICLE", "FERTILIZER APPLICATION", "plant species richness", "macronutrient deficiency", "COMMUNITIES", "drainage", "management", "SEDIMENTS", "FENS"], "contacts": [{"organization": "JA Inberg, D. M. Pegtel, I.C. van Duren, BA Aerts,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/3237027"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Vegetation%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/3237027", "name": "item", "description": "10.2307/3237027", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/3237027"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1997-12-01T00:00:00Z"}}, {"id": "10.2307/3237267", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:56Z", "type": "Journal Article", "created": "2006-05-07", "description": "<p>Abstract.  Betula papyrifera (White birch) is a common tree throughout the boreal forest of Canada; makes up 12% of the total tree volume in insular Newfoundland. It forms pure stands after harvesting and wildfire disturbance and it is a common component in most softwood stands. Little is known regarding the environmental impact of whole\uffe2\uff80\uff90tree or conventional harvesting of this species and variation in impact related to variation in soil and site conditions.</p><p>This study investigates litter and organic matter production and related site ecology in nine medium to high quality Betula papyrifera stands in three locations in central Newfoundland on a variety of land form and drainage conditions. Three sites, Badger West (BW), Moose Pond (MP) and Middleton Lake (ML) were selected. The ML site has the highest quality (with the best height/age ratio, 18 m/60 yr, and height/DBH ratio, 18 m/30 cm, followed by MP and BW. Litter depth on well developed moders or mulls was usually 2 \uffe2\uff80\uff90 3 cm and varied from 1 \uffe2\uff80\uff90 15 cm. Forest floor depths (measured in 324 profiles) rarely reached 20 cm and was commonly 5 \uffe2\uff80\uff90 10 cm; it varied with position and site. Total and available nutrients indicate that B. papyrifera produces one of the highest \uffe2\uff80\uff90quality organic matter types of the local forest types and is important in improving site quality. The mean N\uffe2\uff80\uff90concentration in green foliage (2.21%) and trapped litter (1.03%) was highest at the best quality site ML, followed by MP and BW. The concentration of calcium, 0.85%, was highest at the poorest quality site. Four years after harvesting, litter depth significantly decreased in all sites and treatments with the exception of the BW whole\uffe2\uff80\uff90tree harvest treatment. Total forest floor depth significantly decreased at all sites in the stem\uffe2\uff80\uff90only harvest treatment as well as the MP whole\uffe2\uff80\uff90tree harvest treatment.</p><p>There was a significant decrease in available nitrogen following harvesting in both treatments at both the MP and BW sites. Change in available phosphorus was insignificant, with the exception of an increase in the MP stem\uffe2\uff80\uff90only harvest treatment. There was a significant decrease in available potassium at both the ML and BW whole\uffe2\uff80\uff90tree harvest treatments, but a significant increase in the stem\uffe2\uff80\uff90only harvest treatments at ML and MP. There was a significant decrease in available calcium in both treatments at both the MP and BW sites.</p>", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"], "contacts": [{"organization": "Brian D. Titus, K.W. Deering, B.A. Roberts,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/3237267"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Vegetation%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/3237267", "name": "item", "description": "10.2307/3237267", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/3237267"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1998-02-24T00:00:00Z"}}, {"id": "10.2307/3543854", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:56Z", "type": "Journal Article", "created": "2006-11-16", "description": "Soil conditions were investigated in South Swedish localities where beech forest and first generation planted spruce exist side by side. The main study area was at Kongalund; further observations were made at Slatterbd, Bokeberg and 20 more localities. When beech is replaced by spruce, the physical properties of the upper soil horizon change, there is an accumulation of organic matter and mor forms at the soil surface. The amount of available water decreases and less rainwater supplements the underground water. There is less exchangeable K and Ca in the upper horizon of spruce forest soil, but more Fe, P04 and acid substances resulting in a decrease in pH to a depth of 50 cm or more. Less nitrification and a greater mobilization of mineralized NH4 occurs in spruce than in beech forest soil. It is concluded that soils of moderately good mineral composition uninfluenced by underground water suffer most damage from podsolization when planted with spruce.", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"], "contacts": [{"organization": "Bengt Nihlg\u00e5rd, Bengt Nihlgard,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/3543854"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oikos", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/3543854", "name": "item", "description": "10.2307/3543854", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/3543854"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1971-01-01T00:00:00Z"}}, {"id": "10.3390/app12031330", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:21:17Z", "type": "Journal Article", "created": "2022-01-26", "title": "Implementing a GIS-Based Digital Atlas of Agricultural Plastics to Reduce Their Environmental Footprint; Part I: A Deductive Approach", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>The agricultural sector has benefitted over the last century from several factors that have led to an exponential increase in its productive efficiency. The increasing use of new materials, such as plastics, has been one of the most important factors, as they have allowed for increased production in a simpler and more economical way. Various polymer types are used in different phases of the agricultural production cycle, but when their use is incorrectly managed, it can lead to different environmental impacts. In this study, an applied and simplified methodology to manage agricultural plastics monitoring and planning is proposed. The techniques used are based on quantification through the use of different datasets (orthophotos and satellite images) of the areas covered by plastics used for crop protection. The study area chosen is a part of the Ionian Coast of Southern Italy, which includes the most important municipalities of the Basilicata Region for fruit and vegetable production. The use of geographical techniques and observation methodologies, developed in an open-source GIS environment, enabled accurate location of about 2000 hectares of agricultural land covered by plastics, as well as identification of the areas most susceptible to the accumulation of plastic waste. The techniques and the model implemented, due to its simplicity of use and reliability, can be applied by different local authorities in order to realize an Atlas of agricultural plastics, which would be applied for continuous monitoring, thereby enabling the upscaling of future social and ecological impact assessments, identification of new policy impacts, market searches, etc.</p></article>", "keywords": ["Technology", "remote sensing indice", "Microplastics", "sustainable plasticulture", "0211 other engineering and technologies", "Plastic greenhouse", "02 engineering and technology", "remote sensing indices", "01 natural sciences", "630", "RPGI", "11. Sustainability", "0202 electrical engineering", " electronic engineering", " information engineering", "Biology (General)", "Agro-plastics", "plastic footprint", "2. Zero hunger", "T", "Physics", "04 agricultural and veterinary sciences", "Engineering (General). Civil engineering (General)", "plastic greenhouse", "6. Clean water", "Sustainable plasticulture", "Chemistry", "agricultural plastic surface", "Agricultural plastic surface", "agro-plastics; digital Atlas; agricultural plastic surface; remote sensing indices; RPGI; plastic footprint", "agro\u2010plastic", "TA1-2040", "microplastic", "microplastics", "330", "QH301-705.5", "Soil pollution", "QC1-999", "Plastic footprint", "digital Atla", "Agro\u2010plastic", "12. Responsible consumption", "Agricultural plastic coefficient", "QD1-999", "agro-plastics", "0105 earth and related environmental sciences", "soil pollution", "Mulching film", "mulching film", "plastic greenhouse; mulching film; microplastics; soil pollution; agricultural plastic coefficient; sustainable plasticulture", "15. Life on land", "Remote sensing indices", "agricultural plastic coefficient", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Digital Atlas", "digital Atlas"]}, "links": [{"href": "http://www.mdpi.com/2076-3417/12/3/1330/pdf"}, {"href": "http://www.mdpi.com/2076-3417/12/15/7545/pdf"}, {"href": "https://www.mdpi.com/2076-3417/12/3/1330/pdf"}, {"href": "https://www.mdpi.com/2076-3417/12/15/7545/pdf"}, {"href": "https://doi.org/10.3390/app12031330"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Applied%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/app12031330", "name": "item", "description": "10.3390/app12031330", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/app12031330"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-01-26T00:00:00Z"}}, {"id": "10.2307/3546348", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:56Z", "type": "Journal Article", "created": "2006-11-16", "title": "Increased Atmospheric Co2: Chemical Changes In Decomposing Sweet Chestnut (Castanea Sativa) Leaf Litter Incubated In Microcosms Under Increasing Food Web Complexity", "description": "Increased concentrations of atmospheric CO 2  induced a lower nitrogen concentration in sweet chestnut litter. The C:N ratio was about 35 at a 350 \u03bcl l -1  CO 2  concentration and about 70 at 700 \u03bcl 1 -1 . The CO 2  enrichment increased the proportion of hemicelluloses and cellulose and decreased the proportion of lignin. Both litters were decomposed in microcosms with animal food webs of different complexities. The chemical composition of the decomposed litter (nitrogen, water-soluble compounds, cellulose, hemicelluloses and lignin) was related to the initial composition and to the mass loss. Rates of hemicelluloses and lignin decomposition and nitrogen dynamics were the most affected by the change in litter quality due to atmospheric CO 2  enrichment. In N-rich litter, hemicelluloses were almost completely decomposed and lignin remained intact without effect of animal grazing. In N-poor litter derived from CO 2 -enriched atmosphere, increased complexity of invertebrates food webs significantly enhanced decomposition of all the chemical components. By adding different groups of animals, some limiting factors were overcome and new substrates were liberated for microbial decomposition. It was hypothesized that the decomposition process was controlled by the interaction between lignin and nitrogen.", "keywords": ["13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences"], "contacts": [{"organization": "Marie-Madeleine Co\u00fbteaux, Lucile Jocteur Monrozier, Pierre Bottner, Marie-Madeleine Couteaux,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/3546348"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oikos", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/3546348", "name": "item", "description": "10.2307/3546348", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/3546348"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1996-09-01T00:00:00Z"}}, {"id": "10.2307/3546865", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:57Z", "type": "Journal Article", "created": "2007-02-02", "title": "Nitrogen Deposition Effects On Carbon Dioxide And Methane Emissions From Temperate Peatland Soils", "description": "Northern peatlands are important sources of carbon dioxide and methane emissions to the atmosphere. Increased atmospheric N deposition may have a significant impact on the emission of these greenhouse gases. We studied CO 2  and CH 4  emissions from untreated temperate peat soils from a eutrophic and a mesotrophic fen in a high N deposition area (the Netherlands) and from a mesotrophic fen in a low N deposition area (north-east Poland). In addition, we investigated the effects of N, P and glucose amendments on the emissions of CO 2  and CH 4  from these soils. Nitrogen availability (extractable NH 4  + ) in untreated peat from the high N area was 2.5-7.5 times higher than in the low N area, whereas the pH was 0.9-1.7 units lower. Using 6-week laboratory incubations of peat columns, we found that mean daily CO 2  emission from untreated peat soils from the high N area was lower than that from the low N area. Both linear and multiple regression analysis showed that CO 2 emission was positively related to soil pH (r 2  = 0.64). Additional N supply led to pH reduction and to lower CO 2  emission, especially in the low N peat soils. Thus, increased atmospheric N deposition leads, probably as a result of soil acidification, to lower CO 2  emission. Although glucose amendments resulted in increased CO, and CH 4  emission, we did not find evidence that this was caused by increased mineralization of native peat. Mean daily CH 4 -C emission was about 1-2 orders of magnitude lower than mean daily CO 2 -C emission. In the untreated peat soils from the high N eutrophic site, methane emission was higher than in the high N mesotrophic site and in the low N mesotrophic site. Linear regression analysis showed a positive relation between methane emission and soil fertility variables (r 2 =0.42-0.55), whereas a multiple regression model revealed that methane emission was determined by N-related soil chemistry variables (r 2  = 0.93). Increased nutrient supply initially resulted in higher methane emission from soils of both mesotrophic sites, but there was no effect on the high N eutrophic soil. These results show that increased atmospheric N deposition leads to increased methane emission from low-fertility peat soils. However, the ultimate effect of atmospheric N deposition on trace gas emissions and thereby on global warming is determined by the balance between the ratios of the change in CO 2 -C emission and CH 4 -C emission and the ratio of their global warming potentials (1:21).", "keywords": ["13. Climate action", "SDG 13 - Climate Action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "14. Life underwater", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.2307/3546865"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oikos", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/3546865", "name": "item", "description": "10.2307/3546865", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/3546865"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1999-01-01T00:00:00Z"}}, {"id": "10.2307/3896804", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:57Z", "type": "Journal Article", "created": "2007-11-26", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences"], "contacts": [{"organization": "H. L. Morton, R. W. Bovey, Robert E. Meyer,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2307/3896804"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Range%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/3896804", "name": "item", "description": "10.2307/3896804", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/3896804"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1972-03-01T00:00:00Z"}}, {"id": "10.3390/su16229682", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:21:34Z", "type": "Journal Article", "created": "2024-11-07", "title": "Chemical and Physical Aspects of Soil Health Resulting from Long-Term No-Till Management", "description": "<?xml version='1.0' encoding='UTF-8'?><article><p>The aim of this study was to compare the long-term effects of conventional tillage (CT) and no-till (NT) systems on the main soil properties that determine soil health. The research was conducted in a field experiment established in 1975 in Chylice, central Poland, at the WULS-SGGW Experimental Station Skierniewice. Soil samples collected from 0\u201310 and 10\u201320 cm of the mollic horizon of the Phaeozem were analysed for total organic carbon (TOC) content, fractional composition of SOM and spectroscopic properties of humin, soil structural stability, soil water retention characteristics and soil water repellency (SWR). The results showed that NT practice almost doubled the TOC in the 0\u201310 cm layer. However, optical parameters of humin indicated that NT management promoted the formation of humin with a lower molecular weight and lower degree of condensation of aromatic structures. In the NT 0\u201310 cm layer, a significant increase in the number of water-resistant macroaggregates was found. In the 0\u201310 cm layer, the water capacity increased by 9%, 18%, 22% and 26% compared to CT at (certain soil suction) pF values of 0.0, 2.0, 3.0 and 4.2, respectively. SWR occurs regardless of the cultivation method at a soil moisture equivalent to pF 4.2, and the greatest range of SWR was found in the NT 0\u201310 cm layer.</p></article>", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "01 natural sciences", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Edyta Hewelke, Lilla Mielnik, Jerzy Weber, Aneta Perzanowska, El\u017cbieta Jamroz, Dariusz Gozdowski, Pawe\u0142 Szacki,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.3390/su16229682"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Sustainability", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/su16229682", "name": "item", "description": "10.3390/su16229682", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/su16229682"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-11-06T00:00:00Z"}}, {"id": "10.2307/3674112", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:57Z", "type": "Journal Article", "created": "2007-03-06", "description": "The quality of fallow lands in northern Mindanao, the Philippines, was assessed with a farm survey and soil sampling in order to understand land-use dynamics under upland commercial vegetable production systems. Twenty-one percent of com- mercial vegetable growers practiced fallow systems, with an average re-cultivation period of four years. The soils of the fallow lands were highly acidic, nutrient poor, and higher in exchangeable aluminum compared to lands currently under cultivation. Land fal- lowing was more prominent on large farms and those with higher farm labor requirements. Two distinct groups of land fallowers were identified. The first represented fallowers with a positive net return from vegetable crops while the second, and larger, group represented land fallowers with negative net return from vegetable crops. Re-cultivation of fallow lands was more common in the second group. To rejuvenate fallow lands, timber tree planting was the most preferred option of the first group while fruit trees were preferred by the second group. In light of the apparently slow rate of soil fertility regeneration, the lack of capital among most land fallowers, and the increasing demand for arable land to raise farm income, planting of trees on cultivated lands before their being set aside as fallow for natural fertility regeneration is suggested as a potential measure to increase farm income and the sustainability of upland commercial vegetable production under fallow systems.", "keywords": ["2. Zero hunger", "Soil management", "Farm/Enterprise Scale Field Scale", "Income generation", "Timber", "Cash crops", "04 agricultural and veterinary sciences", "15. Life on land", "Soil fertility", "12. Responsible consumption", "Sustainability", "Land use management", "Farming systems", "Tree crops", "Fallow", "0401 agriculture", " forestry", " and fisheries", "Upland agriculture", "Fruit trees", "Vegetable systems"]}, "links": [{"href": "https://doi.org/10.2307/3674112"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Mountain%20Research%20and%20Development", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2307/3674112", "name": "item", "description": "10.2307/3674112", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2307/3674112"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1999-02-01T00:00:00Z"}}, {"id": "10.2307/3896903", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:20:57Z", "type": "Journal Article", "created": "2007-11-26", "keywords": ["0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "01 natural sciences"], "contacts": [{"organization": "S. 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