{"type": "FeatureCollection", "features": [{"id": "10.1016/j.biortech.2005.04.016", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:16Z", "type": "Journal Article", "created": "2005-06-25", "title": "Influences Of Vermicomposts On Field Strawberries: Part 2. Effects On Soil Microbiological And Chemical Properties", "description": "The effects of applications of food waste and paper waste vermicomposts on some soil chemical and biological properties were evaluated in field plots planted with strawberries. Six-week old strawberries (Fragaria ananasa, var. Chandler) were transplanted into 4.5 m(2) raised beds under a plastic tunnel structure measuring 9.14 x 14.6 x 3.6 m. Vermicompost were applied at rates of 5 or 10 t ha(-1) supplemented with inorganic fertilizers to balance fertilizer recommendations for strawberries of 85-155-125 kg NPK ha(-1). Effects of vermicomposts on strawberry growth and yields have been reported previously [Arancon, N.Q., Edwards C.A., Bierman P., Welch, C., Metzger, J.D., 2004. The influence of vermicompost applications to strawberries: Part 1. Effects on growth and yield. Bioresource Technology 93:145-153]. Total extractable N, NH(4)-N, NO(3)-N and orthophosphates did not differ significantly between treatments, except on the last sampling date (harvest date) in which significantly greater amounts of NH(4)-N, NO(3)-N and orthophosphates (P <or= 0.05) were recorded in vermicompost-treated soils than in the controls. Two major results of vermicompost applications to soils were increases in dehydrogenase activity and microbial biomass-N which were not dose-dependent. Increased dehydrogenase activity and microbial biomass-N was correlated positively with the increased amounts of NH(4)-N, NO(3)-N and orthophosphates in the vermicompost-treated plots than in the controls. Increases in microbial populations and activities are key factors influencing rates of nutrient cycling, production of plant growth-regulating materials, and the build-up of plant resistance or tolerance to crop pathogen and nematode attacks.", "keywords": ["Waste Products", "2. Zero hunger", "Nitrates", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "Fragaria", "Phosphates", "Quaternary Ammonium Compounds", "Soil", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Oxidoreductases", "Soil Microbiology"], "contacts": [{"organization": "P. Bierman, Clive A. Edwards, Norman Q. Arancon,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2005.04.016"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biortech.2005.04.016", "name": "item", "description": "10.1016/j.biortech.2005.04.016", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2005.04.016"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-04-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2010.08.026", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:19Z", "type": "Journal Article", "created": "2010-09-13", "title": "Optimization Of Pig Slurry Application To Heavy Metal Polluted Soils Monitoring Nitrification Processes", "description": "Nitrification is often negatively affected by heavy metal pollution in soils, this limiting land revegetation. Thus, the potential use of pig slurry as a nitrogen-rich organic amendment in different heavy metal contaminated soils has been evaluated; this also being a way of recycling this waste. In order to identify the factors affecting nitrification processes in heavy metal polluted soils (soil pH, heavy metal solubility and the N source), incubation experiments were run using two polluted soils with different pH values (5.0 and 7.1) and a non-contaminated soil (pH 8.2). Ammonium was added as pig slurry or as ammonium sulphate for comparison (both added at 150 mg NH(4)(+)-N kg(-1) of soil). Pig slurry provoked higher nitrification rates and N-immobilisation than ammonium sulphate, especially in the neutral-polluted soil, reflecting an improvement of the microbial activity in the soil. The microbial immobilisation of N led to an inverse relationship between the amount of N added and nitrate conversion in the neutral-polluted soil and in the non-contaminated soil amended with different pig slurry dosages (75, 150 and 225mg NH(4)(+)-N kg(-1) of soil). Low rates of nitrification and N-immobilisation were found in the acidic soil. Pig slurry addition to metal polluted soils enhanced soil nitrification, especially when metals were in low-solubility forms.", "keywords": ["[SDE] Environmental Sciences", "2. Zero hunger", "PIG SLURRY RECYCLING", "SOIL RECLAMATION", "Nitrogen", "Swine", "METAL SOLUBILITY", "04 agricultural and veterinary sciences", "Hydrogen-Ion Concentration", "15. Life on land", "NITRIFICATION", "6. Clean water", "12. Responsible consumption", "Manure", "Quaternary Ammonium Compounds", "MICROBIAL IMMOBILISATION", "Biodegradation", " Environmental", "13. Climate action", "METAL", "Metals", " Heavy", "Animals", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Soil Microbiology"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2010.08.026"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2010.08.026", "name": "item", "description": "10.1016/j.chemosphere.2010.08.026", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2010.08.026"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-10-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2005.08.017", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:28Z", "type": "Journal Article", "created": "2005-10-03", "title": "Responses To Ammonium And Nitrate Additions By Boreal Plants And Their Natural Enemies", "description": "Separate effects of ammonium (NH4+) and nitrate (NO3-) on boreal forest understorey vegetation were investigated in an experiment where 12.5 and 50.0 kg nitrogen (N) ha(-1) year(-1) was added to 2 m2 sized plots during 4 years. The dwarf-shrubs dominating the plant community, Vaccinium myrtillus and V. vitis-idaea, took up little of the added N independent of the chemical form, and their growth did not respond to the N treatments. The grass Deschampsia flexuosa increased from the N additions and most so in response to NO3-. Bryophytes took up predominately NH4+ and there was a negative correlation between moss N concentration and abundance. Plant pathogenic fungi increased from the N additions, but showed no differences in response to the two N forms. Because the relative contribution of NH4+ and NO3- to the total N deposition on a regional scale can vary substantially, the N load a habitat can sustain without substantial changes in the biota should be set considering specific vegetation responses to the predominant N form in deposition.", "keywords": ["Sweden", "0106 biological sciences", "Air Pollutants", "Nitrogen", "Fungi", "Plant Development", "Bryophyta", "Plants", "15. Life on land", "01 natural sciences", "Trees", "Quaternary Ammonium Compounds", "Biomass", "Ecosystem", "Environmental Monitoring", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Joachim Strengbom, Annika Nordin, Lars Ericson,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2005.08.017"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2005.08.017", "name": "item", "description": "10.1016/j.envpol.2005.08.017", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2005.08.017"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-05-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2006.01.041", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:28Z", "type": "Journal Article", "created": "2006-05-03", "title": "Increased Nitrogen In Runoff And Soil Following 13 Years Of Experimentally Increased Nitrogen Deposition To A Coniferous-Forested Catchment At Gardsjon, Sweden", "description": "Beginning in 1991, we have added nitrogen (N) to the 0.5-ha, N-poor, coniferous-forested catchment G2 NITREX at G\u00e5rdsj\u00f6n, Sweden, to investigate the consequences of chronic elevated N deposition. We have added 40 kg N ha-1 yr-1 in fortnightly doses of NH4NO3 to the ambient 15 kg N ha-1 yr-1 by means of a sprinkling system. NO3 concentrations in runoff increased during 13 years from<1 to 70 microeq L-1, and in 2004 comprised about 10% of N input. Inhibition of NO3 immobilisation due to increased availability of NH4 might explain the increased leaching of NO3. C and N pools in the forest floor increased but C/N ratio has not changed. The increase in NO3 leaching thus occurred independently of change in C/N ratio. The results from G\u00e5rdsj\u00f6n demonstrate that increased leaching of inorganic N and decrease in C/N ratio respond to increased N deposition at greatly different time scales.", "keywords": ["Sweden", "0106 biological sciences", "Time Factors", "Nitrogen", "Forestry", "15. Life on land", "Pinus", "01 natural sciences", "6. Clean water", "Quaternary Ammonium Compounds", "Soil", "13. Climate action", "Soil Pollutants", "Adsorption", "Environmental Pollution", "Nitrites", "Water Pollutants", " Chemical", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2006.01.041"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2006.01.041", "name": "item", "description": "10.1016/j.envpol.2006.01.041", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2006.01.041"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-11-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2006.08.031", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:15:58Z", "type": "Journal Article", "created": "2006-10-05", "title": "Labile Substrates Quality As The Main Driving Force Of Microbial Mineralization Activity In A Poplar Plantation Soil Under Elevated Co2 And Nitrogen Fertilization", "description": "Soil carbon (C) long term storage is influenced by the balance among ecosystem net primary productivity (NPP), the rate of delivery of new organic matter to soil pools and the decomposition of soil organic matter (SOM). The increase of NPP under elevated CO(2) can result in a greater production and higher turnover of fine roots or root exudation and, in turn, in an increase of labile C belowground. The aim of this work was to detect if changes in labile C substrates influenced the organic C storage in soils, verifying (i) whether treatments with elevated CO(2) and N fertilization induced changes in the amount and quality of labile C pools and in microbial C immobilization and (ii) whether these changes provoked modifications in the microbial C mineralization activity, and therefore changes in soil C losses. The effect of elevated CO(2) was a significant increase in both seasons (June and October 2004), of all labile C fractions: microbial biomass C (MBC), K(2)SO(4) extractable C (ExC), and water soluble C (WSC). The C/N ratio of the microbial biomass and of the K(2)SO(4) extractable SOM presented a seasonal fluctuation showing higher values in June, whereas the elevated CO(2) increased significantly the C/N ratio of these fractions independent of the season and the N addition, indicating a lower quality of labile SOM. Microbial respiration was more than doubled in October compared to June, confirming that changes in substrate quality and nutrient availability, occurring in the plantation at the beginning and at the end of the vegetative period, influenced the microbial activity in the bulk soil. Furthermore, the microbial respiration response to N fertilization was dependent on the season, with an opposite effect between June and October. The kinetic parameters calculated according to the first-order equation C(m)=C(0)(1-e(-kt)) were unaffected by elevated CO(2) treatment, except C(0)k and MR(basal), that showed a significant reduction, ascribable to (i) a lower quality of labile pools, and (ii) a more efficient microbial biomass in the use of available substrates. The C surplus found in elevated CO(2) soils was indeed immobilized and used for microbial growth, thus excluding a priming effect mechanism of elevated CO(2) on SOM decomposition.", "keywords": ["2. Zero hunger", "Nitrates", "Nitrogen", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "01 natural sciences", "Carbon", "6. Clean water", "Quaternary Ammonium Compounds", "Soil", "Populus", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Fertilizers", "Soil Microbiology", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2006.08.031"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2006.08.031", "name": "item", "description": "10.1016/j.scitotenv.2006.08.031", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2006.08.031"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-12-01T00:00:00Z"}}, {"id": "10.2134/jeq2012.0019", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:18:34Z", "type": "Journal Article", "created": "2012-09-17", "title": "Biochar And Nitrogen Fertilizer Alters Soil Nitrogen Dynamics And Greenhouse Gas Fluxes From Two Temperate Soils", "description": "<p>Biochar (BC) application to agricultural soils could potentially sequester recalcitrant C, increase N retention, increase water holding capacity, and decrease greenhouse gas (GHG) emissions. Biochar addition to soils can alter soil N cycling and in some cases decrease extractable mineral N (NO3\uffe2\uff88\uff92 and NH4+) and N2O emissions. These benefits are not uniformly observed across varying soil types, N fertilization, and BC properties. To determine the effects of BC addition on N retention and GHG flux, we added two sizes (&gt;250 and &lt;250 \uffc2\uffb5m) of oak\uffe2\uff80\uff90derived BC (10% w/w) to two soils (aridic Argiustoll and aquic Haplustoll) with and without N fertilizer and measured extractable NO3\uffe2\uff88\uff92 and NH4+ and GHG efflux (N2O, CO2, and CH4) in a 123\uffe2\uff80\uff90d laboratory incubation. Biochar had no effect on NO3\uffe2\uff88\uff92, NH4+, or N2O in the unfertilized treatments of either soil. Biochar decreased cumulative extractable NO3\uffe2\uff88\uff92 in N fertilized treatments by 8% but had mixed effects on NH4+. Greenhouse gas efflux differed substantially between the two soils, but generally with N fertilizer BC addition decreased N2O 3 to 60%, increased CO2 10 to 21%, and increased CH4 emissions 5 to 72%. Soil pH and total treatment N (soil + fertilizer + BC) predicted soil N2O flux well across these two different soils. Expressed as CO2 equivalents, BC significantly reduced GHG emissions only in the N\uffe2\uff80\uff90fertilized silt loam by decreasing N2O flux. In unfertilized soils, CO2 was the dominant GHG component, and the direction of the flux was mediated by positive or negative BC effects on soil CO2 flux. On the basis of our data, the use of BC appears to be an effective management strategy to reduce N leaching and GHG emissions, particularly in neutral to acidic soils with high N content.</p>", "keywords": ["2. Zero hunger", "Nitrates", "Nitrogen", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "12. Responsible consumption", "Quaternary Ammonium Compounds", "Soil", "13. Climate action", "Charcoal", "11. Sustainability", "0401 agriculture", " forestry", " and fisheries", "Gases", "Fertilizers", "Methane"]}, "links": [{"href": "https://doi.org/10.2134/jeq2012.0019"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Quality", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2134/jeq2012.0019", "name": "item", "description": "10.2134/jeq2012.0019", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2012.0019"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-09-01T00:00:00Z"}}, {"id": "10.2134/jeq2001.3051659x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:18:32Z", "type": "Journal Article", "created": "2010-06-14", "description": "ABSTRACT<p>Cover crops are a management option to reduce NO3 leaching under cereal grain production. A 2\uffe2\uff80\uff90yr field lysimeter study was established in Uppsala, Sweden, to evaluate the effect of a perennial ryegrass (Lolium perenne L.) cover crop interseeded in barley (Hordeum vulgare L.) on NO3\uffe2\uff80\uff93N leaching and availability of N to the main crop. Barley and ryegrass or barley alone were seeded in mid\uffe2\uff80\uff90May 1992, in lysimeters (0.3\uffe2\uff80\uff90m diam. \uffc3\uff97 1.2\uffe2\uff80\uff90m depth) of an undisturbed, well\uffe2\uff80\uff90drained, sandy loam soil. Fertilizer N was applied at the same time as labeled 15NH415NO3 (10 atom % 15N) at a rate of 100 kg N ha\uffe2\uff88\uff921 In 1993, barley was reseeded in May in the lysimeters but with nonlabeled NH4NO3 and no cover crop (previous year's cover crop incorporated just prior to seeding). Barley yields and total and fertilizer N uptake in Year 1 (1992) were unaffected by cover crop. Total aboveground N uptake by the ryegrass was 28 kg ha\uffe2\uff88\uff921 at the time of incorporation the following spring. Recovery of fertilizer\uffe2\uff80\uff90derived N in May 1993 was about 100%; 53% in soil, 46% in barley, &lt;2% in ryegrass, and negligible amounts in leachate. In May 1994, the corresponding figures were: 32% in soil, &lt;3% in barley, and, again, negligible amounts in leachate. The cover crop reduced concentrations of NO3\uffe2\uff80\uff93N in the leachate considerably (&lt;5 mg L\uffe2\uff88\uff921, compared with 10 to 18 mg L\uffe2\uff88\uff921 without cover crop) at most sampling times from November 1992 to April 1994, and reduced the total amount of NO3\uffe2\uff80\uff93N leached (22 compared with 8 kg ha\uffe2\uff88\uff921).</p>", "keywords": ["2. Zero hunger", "Nitrogen", "Climate", "Biological Availability", "Agriculture", "Hordeum", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water", "Quaternary Ammonium Compounds", "Lolium", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Nitrogen Oxides", "Seasons", "Fertilizers", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Lars Bergstr\u00f6m, William E. Jokela,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.2134/jeq2001.3051659x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Quality", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2134/jeq2001.3051659x", "name": "item", "description": "10.2134/jeq2001.3051659x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2001.3051659x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2001-09-01T00:00:00Z"}}, {"id": "10.2134/jeq2007.0197", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-20T16:18:33Z", "type": "Journal Article", "created": "2008-02-12", "description": "Abstract<p>Within Canada, it has been recognized in the last decade that military training activities may have impacts on the environmental quality of training ranges. However, impacts of activities specific to Air Force Bases have not yet been intensely documented. A hydrogeological study was accomplished at the Cold Lake Air Weapons Range, Alberta, to evaluate the environmental impacts of using bombs, rockets, strafing, and open burning/open detonation (OB/OD) on the quality of soil, ground water, surface water, and lake sediments. Samples were analyzed for metals, anions, ammonium perchlorate (NH4ClO4), and energetic materials (EM). It was found that training activities did not result in measured values being exceeded on the basis of guidance values for surface water and lake sediments. Contamination by metals was mostly limited to soils, and some metals may be related to the use of bombs (Cd, Cu, Pb), strafe (Cu), and rockets (As, Ba, Cd, Cr, Cu, Fe, Ni, Pb, U, V, Zn). TNT (2,4,6\uffe2\uff80\uff90trinitrotoluene) was the main EM found in soils, while RDX (hexahydro\uffe2\uff80\uff901,3,5\uffe2\uff80\uff90trinitro\uffe2\uff80\uff901,3,5\uffe2\uff80\uff90triazine) was more common in ground water. Both are related to live bombing, while nitroglycerine (NG) is related to rocket use and was detected in soils only. Aluminum, nitrate, and ammonium perchlorate detected in ground water may be related to live bombing or rockets. OB/OD operations resulted in the presence of various EM in soils, and of perchlorate and nitrate in ground water. Contamination by metals and explosives in soils was localized around the targets and varied significantly in time; however, in ground water it was more constant and may persist for a period of several years after a target has been removed.</p>", "keywords": ["Anions", "Geologic Sediments", "550", "lake sediments", "Fresh Water", "Environment", "01 natural sciences", "Alberta", "Explosive Agents", "Water Supply", "Soil Pollutants", "0105 earth and related environmental sciences", "Nitrates", "Perchlorates", "04 agricultural and veterinary sciences", "nitroglycerine", "ammonium perchlorate", "Quaternary Ammonium Compounds", "Metals", "13. Climate action", "open detonation", "0401 agriculture", " forestry", " and fisheries", "Weapons", "Water Pollutants", " Chemical", "Environmental Monitoring", "Trinitrotoluene"]}, "links": [{"href": "https://doi.org/10.2134/jeq2007.0197"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Quality", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.2134/jeq2007.0197", "name": "item", "description": "10.2134/jeq2007.0197", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2007.0197"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-03-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Quaternary+Ammonium+Compounds&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Quaternary+Ammonium+Compounds&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Quaternary+Ammonium+Compounds&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Quaternary+Ammonium+Compounds&offset=8", "hreflang": "en-US"}], "numberMatched": 8, "numberReturned": 8, "distributedFeatures": [], "timeStamp": "2026-09-21T10:53:48.125713Z"}