High\uffe2\uff80\uff90resolution mass spectrometry (HRMS) has become a vital tool for dissolved organic matter (DOM) characterization. The upward trend in HRMS analysis of DOM presents challenges in data comparison and interpretation among laboratories operating instruments with differing performance and user operating conditions. It is therefore essential that the community establishes metric ranges and compositional trends for data comparison with reference samples so that data can be robustly compared among research groups. To this end, four identically prepared DOM samples were each measured by 16 laboratories, using 17 commercially purchased instruments, using positive\uffe2\uff80\uff90ion and negative\uffe2\uff80\uff90ion mode electrospray ionization (ESI) HRMS analyses. The instruments identified ~1000 common ions in both negative\uffe2\uff80\uff90 and positive\uffe2\uff80\uff90ion modes over a wide range of m/z values and chemical space, as determined by van Krevelen diagrams. Calculated metrics of abundance\uffe2\uff80\uff90weighted average indices (H/C, O/C, aromaticity, and m/z) of the commonly detected ions showed that hydrogen saturation and aromaticity were consistent for each reference sample across the instruments, while average mass and oxygenation were more affected by differences in instrument type and settings. In this paper we present 32 metric values for future benchmarking. The metric values were obtained for the four different parameters from four samples in two ionization modes and can be used in future work to evaluate the performance of HRMS instruments.1 m) nutrient uptake is prevalent at four of the five sites. At all of the sites, the highest abundance of one or more of the measured nutrients occurred deep within the soil profile, particularly for P, Ca2+ and Mg2+. Phosphate contents were greater at depth than in the top meter of soil at three of five sites. At Jornada, for example, the 2-3 m depth increment had twice the extractable P as the top meter of soil, despite the highest concentrations of P occurring at the surface. The prevalence of such deep resource pools, and our evidence for cation uptake from them, suggest nutrient uptake as a complementary explanation for the occurrence of deep-rooted plants in arid and semi-arid systems. We propose that hydraulic redistribution of shallow surface water to deep soil layers by roots may be the mechanism through which deep soil nutrients are mobilized and taken up by plants.", "keywords": ["2. Zero hunger", "0106 biological sciences", "Fresh Water", "Humidity", "Phosphorus", "04 agricultural and veterinary sciences", "15. Life on land", "Plant Roots", "01 natural sciences", "Soil", "Strontium Isotopes", "13. Climate action", "Southwestern United States", "0401 agriculture", " forestry", " and fisheries", "Calcium", "Magnesium", "Biomass", "Ecosystem", "Plant Physiological Phenomena"]}, "links": [{"href": "https://doi.org/10.1007/s00442-004-1687-z"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Oecologia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00442-004-1687-z", "name": "item", "description": "10.1007/s00442-004-1687-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00442-004-1687-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-08-19T00:00:00Z"}}, {"id": "10.1007/s10661-010-1531-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:14:56Z", "type": "Journal Article", "created": "2010-06-17", "title": "Soil Chemical And Physical Properties At The Bear Brook Watershed In Maine, Usa", "description": "Acidic deposition leads to the acidification of waters and accelerated leaching and depletion of soil base cations. The Bear Brook Watershed in Maine has used whole-watershed chemical manipulations to study the effects of elevated N and S on forest ecosystem function on a decadal time scale. The objectives of this study were to define the chemical and physical characteristics of soils in both the reference and treated watersheds after 17 years of treatment and assess evidence of change in soil chemistry by comparing soil studies in 1998 and 2006. Results from 1998 confirmed depletion of soil base cation pools and decreased pH due to elevated N and S within the treated watershed. However, between 1998 and 2006, during a period of declining SO4(2-) deposition and continued whole-watershed experimental acidification on the treated watershed, there was little evidence of continued soil exchangeable base cation concentration depletion or recovery. The addition of a pulse of litterfall and accelerating mineralization from a severe ice storm in 1998 may have had significant effects on forest floor nutrient pools and cycling between 1998 and 2006. Our findings suggest that mineralization of additional litter inputs from the ice storm may have obscured temporal trends in soil chemistry. The physical data presented also demonstrate the importance of coarse fragments in the architecture of these soils. This study underscores the importance of long-term, quantitative soil monitoring in determining the trajectories of change in forest soils and ecosystem processes over time.", "keywords": ["Nitrogen", "Fresh Water", "Phosphorus", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "Carbon", "6. Clean water", "Trees", "Soil", "13. Climate action", "Humans", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Calcium", "Magnesium", "Maine", "Acids", "Ecosystem", "Aluminum", "Environmental Monitoring", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Stephen A. Norton, Michael D. SanClements, Ivan J. Fernandez,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s10661-010-1531-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Monitoring%20and%20Assessment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10661-010-1531-3", "name": "item", "description": "10.1007/s10661-010-1531-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10661-010-1531-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-06-18T00:00:00Z"}}, {"id": "10.1007/s11356-019-06540-w", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:15:10Z", "type": "Journal Article", "created": "2019-10-23", "title": "Evaluating the performance of SALTMED model under alternate irrigation using saline and fresh water strategies to winter wheat in the North China Plain", "description": "The effective water management in the North China Plain (NCP) needs a tool to predict winter wheat production due to water quality. A large quantity of brackish water is stored underground in this region, and whether this water can be used properly in agriculture is becoming a crucial issue that is about to be resolved. The SALTMED model is a generic modeling tool for efficient irrigation management strategies, especially for cyclic use of saline and fresh water as well as different water qualities, and it still needs further investigation for alternate irrigation using saline and fresh water at different growth stages of winter wheat. Therefore, the aim of this investigation was to evaluate the performance of SALTMED model and simulate the production of winter wheat grown under different irrigation strategies. Irrigation strategies comprised rain-fed cultivation (NI), fresh and saline water irrigation (FS), saline and fresh water irrigation (SF), saline water irrigation (SS), and fresh water irrigation (FF). Three-year observed data were used for the validations of SALTMED model. The values of evaluation indices of relative error, RMSE, NRMSE, index of agreement (D-index), and R2 between simulated and observed grain yield were 6.8%, 0.8, 10.7, 0.9, and 0.9, respectively. The model results supported and matched the observed data and indicated similar differences among the irrigated and rain-fed treatments. It is concluded that the SALTMED model is able to predict grain yield of winter wheat and its productivity under the alternate irrigation using saline and fresh water and their interaction in the climate condition of the NCP", "keywords": ["0106 biological sciences", "2. Zero hunger", "China", "Agricultural Irrigation", "Fresh water", "Water productivity", "Rain", "Water", "Agriculture", "Fresh Water", "15. Life on land", "01 natural sciences", "6. Clean water", "Winter wheat", "Model - Saline water", "Biomass", "Seasons", "Grain yield", "Edible Grain", "Triticum"]}, "links": [{"href": "https://doi.org/10.1007/s11356-019-06540-w"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%20and%20Pollution%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11356-019-06540-w", "name": "item", "description": "10.1007/s11356-019-06540-w", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11356-019-06540-w"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-10-23T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2019.03.190", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:15:38Z", "type": "Journal Article", "created": "2019-04-01", "title": "Dissolution and aggregation kinetics of zero valent copper nanoparticles in (simulated) natural surface waters: Simultaneous effects of pH, NOM and ionic strength", "description": "The combined effects of pH, dissolved organic carbon (DOC) and Ca2+/Mg2+ on the dissolution and aggregation kinetics of zero valent copper engineered nanoparticles (Cu0 ENPs) were investigated. The dissolution and aggregation of the particles were studied in (a) synthetic aqueous media, similar in chemistry to natural surface waters, and (b) natural surface waters samples, for up to 32 or 24\u202fh. The DOC stabilized the particles and prevented aggregation, and thus increased the available surface area. The higher available surface area in turn accelerated the dissolution of the particles. The presence of Ca2+/Mg2+, however, changed the aggregation and the dissolution of the DOC-stabilized particles. The influence of Ca2+/Mg2+ on DOC-stabilized particles was different at different pH's. In the absence of DOC, 10\u202fmM of Ca2+/Mg2+ induced charge reversal on the particles and caused particle stability against aggregation. This subsequently increased particles dissolution. The results obtained with regard to dissolution and aggregation of the particles in natural surface waters were compared with those determined for the synthetic waters. This comparison showed that the behavior of the particles in the natural surface waters was mostly similar to the behavior determined for media at pH 9. Overall, the current study provides some novel insights into the simultaneous effects of physicochemical parameters of water on particle stability against aggregation and dissolution, and provides data about how the processes of aggregation and dissolution of Cu0 ENPs interact and jointly determine the overall particle fate.", "keywords": ["Cations", " Divalent", "Environmental fate", "Osmolar Concentration", "0211 other engineering and technologies", "Metal Nanoparticles", "Fresh Water", "02 engineering and technology", "Hydrogen-Ion Concentration", "01 natural sciences", "Physico-chemical parameters", "6. Clean water", "Aggregation", "Kinetics", "Solubility", "Aggregation; Complexation; Copper nanoparticles; Dissolution; Environmental fate; Natural water; Physico-chemical parameters", "Complexation", "Natural water", "Calcium", "Magnesium", "Copper nanoparticles", "Organic Chemicals", "Dissolution", "Copper", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2019.03.190"}, {"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.2019.03.190", "name": "item", "description": "10.1016/j.chemosphere.2019.03.190", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2019.03.190"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-07-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2005.01.007", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:15:47Z", "type": "Journal Article", "created": "2005-03-15", "title": "Organochlorine Compounds In Soils And Sediments Of The Mountain Andean Lakes", "description": "Semi-volatile organochlorine compounds (OC) were analyzed in remote Andean soils and lake sediments. The sampling sites covered a wide latitudinal gradient from 18 degrees S to 46 degrees S along Chile and an altitudinal gradient (10-4500 m). The concentrations were in the order of background levels, involving absence of major pollution sources in the high mountain areas. Significant correlations were found between log-transformed concentrations of hexachlorobenzene, alpha- and gamma-hexachlorocyclohexane in soils and total organic content (TOC). In addition, TOC-normalized concentrations of the most volatile OC showed a significant linear dependence with air temperature. This good agreement points to temperature as a significant factor for the retention of long range transported OC in remote ecosystems such as the Andean mountains, although other variables should not be totally excluded. The highest concentrations of OCs were achieved in the sites located at highest altitude and lowest temperature of the dataset.", "keywords": ["Geologic Sediments", "Altitude", "lake sediments", "Temperature", "organochlorine compounds; Andean range; long range transport; soil; lake sediments", "Fresh Water", "Organochlorine compounds", "15. Life on land", "01 natural sciences", "Lake sediments", "soil", "organochlorine compound", "Andean range", "Long range transport", "Soil", "13. Climate action", "Hydrocarbons", " Chlorinated", "Soil Pollutants", "Chile", "long range transport", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2005.01.007"}, {"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.2005.01.007", "name": "item", "description": "10.1016/j.envpol.2005.01.007", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2005.01.007"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-07-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2017.12.015", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:15:48Z", "type": "Journal Article", "created": "2017-12-21", "title": "Impact of water chemistry on the behavior and fate of copper nanoparticles", "description": "A full-factorial test design was applied to systematically investigate the contribution and significance of water chemistry parameters (pH, divalent cations and dissolved organic carbon (DOC) concentration) and their interactions on the behavior and fate of copper nanoparticles (CuNPs). The total amount of Cu remaining in the water column after 48\u00a0h of incubation was mostly influenced by divalent cation content, DOC concentration and the interaction of divalent cations and DOC. DOC concentration was the predominant factor influencing the dissolution of CuNPs, which was far more important than the effect of pH in the range from 6 to 9 on the dissolution of the CuNPs. The addition of DOC at concentrations ranging from 5 to 50\u00a0mg\u00a0C/L resulted in a 3-5 fold reduction of dissolution of CuNPs after 48\u00a0h of incubation, as compared to the case without addition of DOC. Divalent cation content was found to be the most influential factor regarding aggregation behavior of the particles, followed by DOC concentration and the interaction of divalent cations and DOC. In addition, the aggregation behavior of CuNPs rather than particulate dissolution explained most of the variance in the sedimentation profiles of CuNPs. These results are meaningful for improved understanding and prediction of the behavior and fate of metallic NPs in aqueous environments.", "keywords": ["Cations", " Divalent", "0211 other engineering and technologies", "Metal Nanoparticles", "Water", "Fresh Water", "02 engineering and technology", "Hydrogen-Ion Concentration", "01 natural sciences", "Carbon", "13. Climate action", "Organic Chemicals", "Copper", "Water Pollutants", " Chemical", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2017.12.015"}, {"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.2017.12.015", "name": "item", "description": "10.1016/j.envpol.2017.12.015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2017.12.015"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-03-01T00:00:00Z"}}, {"id": "10.1111/gcb.14504", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:17:48Z", "type": "Journal Article", "created": "2018-10-29", "title": "Nitrous oxide emissions from inland waters: Are IPCC estimates too high?", "description": "Abstract
Nitrous oxide (N2O) emissions from inland waters remain a major source of uncertainty in global greenhouse gas budgets. N2O emissions are typically estimated using emission factors (EFs), defined as the proportion of the terrestrial nitrogen (N) load to a water body that is emitted as N2O to the atmosphere. The Intergovernmental Panel on Climate Change (IPCC) has proposed EFs of 0.25% and 0.75%, though studies have suggested that both these values are either too high or too low. In this work, we develop a mechanistic modeling approach to explicitly predict N2O production and emissions via nitrification and denitrification in rivers, reservoirs and estuaries. In particular, we introduce a water residence time dependence, which kinetically limits the extent of denitrification and nitrification in water bodies. We revise existing spatially explicit estimates of N loads to inland waters to predict both lumped watershed and half\uffe2\uff80\uff90degree grid cell emissions and EFs worldwide, as well as the proportions of these emissions that originate from denitrification and nitrification. We estimate global inland water N2O emissions of 10.6\uffe2\uff80\uff9319.8\uffc2\uffa0Gmol\uffc2\uffa0N\uffc2\uffa0year\uffe2\uff88\uff921 (148\uffe2\uff80\uff93277\uffc2\uffa0Gg\uffc2\uffa0N\uffc2\uffa0year\uffe2\uff88\uff921), with reservoirs producing most N2O per unit area. Our results indicate that IPCC EFs are likely overestimated by up to an order of magnitude, and that achieving the magnitude of the IPCC's EFs is kinetically improbable in most river systems. Denitrification represents the major pathway of N2O production in river systems, whereas nitrification dominates production in reservoirs and estuaries.Anthropogenic activities have increased phosphorus (P) inputs to most aquatic and terrestrial ecosystems. However, the relationship between plant nutrient resorption and P availability is still unclear and much less is known about the underlying mechanisms. Here, we used a multi-level P addition experiment (0, 1.2, 4.8 and 9.6\uffe2\uff80\uff85g P m\uffe2\uff88\uff922 year\uffe2\uff88\uff921) to assess the effect of P enrichment on nutrient resorption at plant organ, species and community levels in a freshwater marsh of Northeast China. The response of nutrient resorption to P addition generally did not vary with addition rates. Moreover, nutrient resorption exhibited similar responses to P addition across the three hierarchical levels. Specifically, P addition decreased nitrogen (N) resorption proficiency, P resorption efficiency and proficiency, but did not impact N resorption efficiency. In addition, P resorption efficiency and proficiency were linearly related to the ratio of inorganic P to organic P and organic P fraction in mature plant organs, respectively. Our findings suggest that the allocation pattern of plant P between inorganic and organic P fractions is an underlying mechanism controlling P resorption processes and that P enrichment could strongly influence plant-mediated biogeochemical cycles through altered nutrient resorption in the freshwater wetlands of Northeast China.
", "keywords": ["0106 biological sciences", "2. Zero hunger", "China", "Nitrogen", "Fresh Water", "Phosphorus", "04 agricultural and veterinary sciences", "Plants", "15. Life on land", "01 natural sciences", "Article", "6. Clean water", "Species Specificity", "Organ Specificity", "13. Climate action", "Wetlands", "0401 agriculture", " forestry", " and fisheries", "Biomass", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1038/srep08097"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/srep08097", "name": "item", "description": "10.1038/srep08097", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/srep08097"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-01-29T00:00:00Z"}}, {"id": "10.1039/c7en01119a", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:17:11Z", "type": "Journal Article", "created": "2018-02-07", "title": "Heteroaggregation of nanoplastic particles in the presence of inorganic colloids and natural organic matter", "description": "The presence and accumulation of micro- and nanoplastics in marine and fresh waters represent a huge environmental concern.
", "keywords": ["ddc:333.7-333.9", "2. Zero hunger", "info:eu-repo/classification/ddc/333.7-333.9", "info:eu-repo/classification/ddc/550", "Fresh waters", "Alginate", "0211 other engineering and technologies", "02 engineering and technology", "01 natural sciences", "6. Clean water", "3. Good health", "ddc:550", "Fe2O3", "Heteroaggregation", "Nanoplastics", "Polystyrene", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://oceanrep.geomar.de/id/eprint/57826/1/Oriekhova.pdf"}, {"href": "https://oceanrep.geomar.de/id/eprint/57826/2/Suppl.pdf"}, {"href": "http://pubs.rsc.org/en/content/articlepdf/2018/EN/C7EN01119A"}, {"href": "https://doi.org/10.1039/c7en01119a"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%3A%20Nano", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1039/c7en01119a", "name": "item", "description": "10.1039/c7en01119a", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1039/c7en01119a"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-01-01T00:00:00Z"}}, {"id": "10.1111/mec.15632", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:18:04Z", "type": "Journal Article", "created": "2020-09-27", "title": "Comparison of markers for the monitoring of freshwater benthic biodiversity through DNA metabarcoding", "description": "AbstractMetabarcoding of bulk or environmental DNA has great potential for biomonitoring of freshwater environments. However, successful application of metabarcoding to biodiversity monitoring requires universal primers with high taxonomic coverage that amplify highly variable, short metabarcodes with high taxonomic resolution. Moreover, reliable and extensive reference databases are essential to match the outcome of metabarcoding analyses with available taxonomy and biomonitoring indices. Benthic invertebrates, particularly insects, are key taxa for freshwater bioassessment. Nevertheless, few studies have so far assessed markers for metabarcoding of freshwater macrobenthos. Here we combined in silico and laboratory analyses to test the performance of different markers amplifying regions in the 18S rDNA (Euka02), 16S rDNA (Inse01) and COI (BF1_BR2\uffe2\uff80\uff90COI) genes, and developed an extensive database of benthic macroinvertebrates of France and Europe, with a particular focus on key insect orders (Ephemeroptera, Plecoptera and Trichoptera). Analyses on 1,514 individuals representing different taxa of benthic macroinvertebrates showed very different amplification success across primer combinations. The Euka02 marker showed the highest universality, while the Inse01 marker showed excellent performance for the amplification of insects. BF1_BR2\uffe2\uff80\uff90COI showed the highest resolution, while the resolution of Euka02 was often limited. By combining our data with GenBank information, we developed a curated database including sequences representing 822 genera. The heterogeneous performance of the different primers highlights the complexity in identifying the best markers, and advocates for the integration of multiple metabarcodes for a more comprehensive and accurate understanding of ecological impacts on freshwater biodiversity.
", "keywords": ["0106 biological sciences", "570", "amplification rate; biomonitoring; biotic indices; cytochrome c oxidase I; environmental DNA; freshwater biodiversity; macroinvertebrates; primer bias; taxonomic resolution; universality", "500", "Fresh Water", "Biodiversity", "15. Life on land", "01 natural sciences", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "Europe", "Animals", "DNA Barcoding", " Taxonomic", "Humans", "France", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology"]}, "links": [{"href": "https://air.unimi.it/bitstream/2434/791349/3/ficetola%20et%20al%202020%20Mol%20Ecol%20submitted.pdf"}, {"href": "https://air.unimi.it/bitstream/2434/791349/4/mec.15632.pdf"}, {"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/mec.15632"}, {"href": "https://doi.org/10.1111/mec.15632"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Molecular%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/mec.15632", "name": "item", "description": "10.1111/mec.15632", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/mec.15632"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-09-28T00:00:00Z"}}, {"id": "10.1111/j.1574-6968.2006.00409.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:18:01Z", "type": "Journal Article", "created": "2006-08-15", "title": "Effects Of An Invasive Cattail Species (Typha X Glauca) On Sediment Nitrogen And Microbial Community Composition In A Freshwater Wetland", "description": "Sediments from Cheboygan Marsh, a coastal freshwater wetland on Lake Huron that has been invaded by an emergent exotic plant, Typhaxglauca, were examined to assess the effects of invasion on wetland nutrient levels and sediment microbial communities. Comparison of invaded and uninvaded zones of the marsh indicated that the invaded zone showed significantly lower plant diversity, as well as significantly higher aboveground plant biomass and soil organic matter. The sediments in the invaded zone also showed dramatically higher concentrations of soluble nutrients, including greater than 10-fold higher soluble ammonium, nitrate, and phosphate, which suggests that Typhaxglauca invasion may be impacting the wetland's ability to remove nutrients. Terminal restriction fragment length polymorphism analyses revealed significant differences in the composition of total bacterial communities (based on 16S-rRNA genes) and denitrifier communities (based on nirS genes) between invaded and uninvaded zones. This shift in denitrifiers in the sediments may be ecologically significant due to the critical role that denitrifying bacteria play in removal of nitrogen by wetlands.", "keywords": ["0106 biological sciences", "Geologic Sediments", "Michigan", "Bacteria", "Geography", "Nitrogen", "Fresh Water", "Plants", "15. Life on land", "Bacterial Physiological Phenomena", "Typhaceae", "01 natural sciences", "6. Clean water", "13. Climate action", "Environmental Microbiology", "Ecosystem", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1111/j.1574-6968.2006.00409.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/FEMS%20Microbiology%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1574-6968.2006.00409.x", "name": "item", "description": "10.1111/j.1574-6968.2006.00409.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1574-6968.2006.00409.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-10-01T00:00:00Z"}}, {"id": "10.1890/08-1330.1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:18:41Z", "type": "Journal Article", "created": "2010-03-23", "title": "Soil Development And Establishment Of Carbon-Based Properties In Created Freshwater Marshes", "description": "The current U.S. wetland mitigation policy of \uffe2\uff80\uff9cno net loss\uffe2\uff80\uff9d requires that a new wetland be created to replace any natural wetland destroyed under development pressures. This policy, however, may be resulting in a net loss of carbon\uffe2\uff80\uff90based wetland functions. We evaluated the ability of created wetlands to accumulate carbon and to mitigate loss of carbon\uffe2\uff80\uff90based functions in natural wetlands with variable hydrology. Potential limiting factors to carbon accumulation within created systems included soil aggregation, texture, and bulk density. Rates of soil development and the time required for created wetlands to accumulate the amount of carbon found in natural wetlands were estimated by an exponential model.
Soils collected from five created (ages 3\uffe2\uff80\uff938 years) and four natural freshwater marshes, located in central Ohio, USA, were analyzed for soil organic carbon (SOC), mineralizable soil carbon (Cmin), water\uffe2\uff80\uff90stable aggregates (WSA), particle\uffe2\uff80\uff90size fractions (PSD), and bulk density. Peak\uffe2\uff80\uff90standing aboveground plant biomass was also quantified. Created wetlands contained significantly less plant biomass, SOC, and Cmin than natural wetlands (\uffce\uffb1 \uffe2\uff89\uffa4 0.05; false discovery rate). Soil physical properties also differed significantly between created and natural wetlands, with fewer macroaggregates, more microaggregates, more silt\uffe2\uff80\uff93clay (0\uffe2\uff80\uff935 cm only), and higher bulk density in created wetlands (\uffce\uffb1 \uffe2\uff89\uffa4 0.05; false discovery rate). Carbon content was positively correlated with macroaggregate content and negatively correlated with microaggregate content, silt\uffe2\uff80\uff90clay fraction, and bulk density.
Fit of SOC data to the exponential model indicated that a newly created wetland would require 300 years to sequester the amount of SOC contained in a natural wetland. At this rate of carbon accumulation, a mitigation ratio of 2.7:1 (area) would be necessary for successful mitigation over a 50\uffe2\uff80\uff90year time period. However, other trajectories fit the data equally well and suggested area mitigation ratios of 2.2:1 (logistic) to 4.4:1 (linear regression) to 5.1:1 (exponential regression). Whether created wetlands are on a trajectory toward natural wetland carbon function, however, remains uncertain. Until gaps in the data are filled and a trajectory verified, the best mitigation policy will be a conservative one, with a restrictive permitting process and high mitigation ratios (5.1:1 minimum).
", "keywords": ["2. Zero hunger", "Soil", "13. Climate action", "Wetlands", "0401 agriculture", " forestry", " and fisheries", "Fresh Water", "04 agricultural and veterinary sciences", "15. Life on land", "Carbon", "6. Clean water", "Environmental Monitoring"], "contacts": [{"organization": "Katie Hossler, Virginie Bouchard,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1890/08-1330.1"}, {"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": "10.1890/08-1330.1", "name": "item", "description": "10.1890/08-1330.1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/08-1330.1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-03-01T00:00:00Z"}}, {"id": "10.2134/jeq2007.0197", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:18:50Z", "type": "Journal Article", "created": "2008-02-12", "description": "AbstractWithin 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.
", "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"}}, {"id": "10.2134/jeq2010.0168", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:18:50Z", "type": "Journal Article", "created": "2011-04-26", "title": "Agroforestry Buffers For Nonpoint Source Pollution Reductions From Agricultural Watersheds", "description": "Despite increased attention and demand for the adoption of agroforestry practices throughout the world, rigorous long-term scientific studies confirming environmental benefits from the use of agroforestry practices are limited. The objective was to examine nonpoint-source pollution (NPSP) reduction as influenced by agroforestry buffers in watersheds under grazing and row crop management. The grazing study consists of six watersheds in the Central Mississippi Valley wooded slopes and the row crop study site consists of three watersheds in a paired watershed design in Central Claypan areas. Runoff water samples were analyzed for sediment, total nitrogen (TN), and total phosphorus (TP) for the 2004 to 2008 period. Results indicate that agroforestry and grass buffers on grazed and row crop management sites significantly reduce runoff, sediment, TN, and TP losses to streams. Buffers in association with grazing and row crop management reduced runoff by 49 and 19%, respectively, during the study period as compared with respective control treatments. Average sediment loss for grazing and row crop management systems was 13.8 and 17.9 kg ha yr, respectively. On average, grass and agroforestry buffers reduced sediment, TN, and TP losses by 32, 42, and 46% compared with the control treatments. Buffers were more effective in the grazing management practice than row crop management practice. These differences could in part be attributed to the differences in soils, management, and landscape features. Results from this study strongly indicate that agroforestry and grass buffers can be designed to improve water quality while minimizing the amount of land taken out of production.", "keywords": ["2. Zero hunger", "Geologic Sediments", "Missouri", "Nitrogen", "Water Pollution", "Agriculture", "Forestry", "Fresh Water", "Phosphorus", "04 agricultural and veterinary sciences", "15. Life on land", "Poaceae", "6. Clean water", "Trees", "Rivers", "13. Climate action", "Water Movements", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.2134/jeq2010.0168"}, {"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/jeq2010.0168", "name": "item", "description": "10.2134/jeq2010.0168", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2010.0168"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-05-01T00:00:00Z"}}, {"id": "10.5281/zenodo.15396375", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:20:46Z", "type": "Dataset", "title": "Lateral Carbon and Water Chemistry Data from a Small Arctic Coastal Catchment near Churchill, Manitoba, Late Summer 2022", "description": "This dataset accompanies the study 'Lateral carbon flow in an Arctic coastal catchment in late summer.' It includes water chemistry and hydrological data collected in a small coastal catchment near Churchill, Manitoba, Canada (~10 km inland from Hudson Bay). The study focused on surface water and soil pore water sampling between August 12 and September 5, 2022. Parameters measured include pH, dissolved organic carbon (DOC), dissolved inorganic carbon (DIC), particulate organic carbon (POC), SUVA254, spectral slope ratio (SR), stable carbon isotopes (\u03b4\u00b9\u00b3C-DIC, \u03b4\u00b9\u00b3C-DOC), specific conductivity, temperature, dissolved CO\u2082, and CH\u2084. The dataset also includes site coordinates and discharge measurements. The study aimed to assess the influence of a late summer rainfall event on lateral carbon fluxes across different landscape types (headwater peatland and coastal sandy heathland).", "keywords": ["Fresh Water/chemistry", "lateral carbon export", "Arctic catchment", "Precipitation event", "Churchill", "arctic carbon cycling", "arctic hydrology", "Hudson Bay Lowlands", "dissolved inorganic carbon", "dissolved organic carbon"], "contacts": [{"organization": "Martyn Rosco, Melanie, Hensgens, Geert, Weedon, James, Dean, Joshua,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.15396375"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.15396375", "name": "item", "description": "10.5281/zenodo.15396375", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.15396375"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2025-12-15T00:00:00Z"}}, {"id": "1871.1/d6f80066-698b-4a74-a44e-d83364279614", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:22:22Z", "type": "Journal Article", "created": "2021-12-02", "title": "Exploring Spatially Explicit Changes in Carbon Budgets of Global River Basins during the 20th Century", "description": "Rivers play an important role in the global carbon (C) cycle. However, it remains unknown how long-term river C fluxes change because of climate, land-use, and other environmental changes. Here, we investigated the spatiotemporal variations in global freshwater C cycling in the 20th century using the mechanistic IMAGE-Dynamic Global Nutrient Model extended with the Dynamic In-Stream Chemistry Carbon module (DISC-CARBON) that couples river basin hydrology, environmental conditions, and C delivery with C flows from headwaters to mouths. The results show heterogeneous spatial distribution of dissolved inorganic carbon (DIC) concentrations in global inland waters with the lowest concentrations in the tropics and highest concentrations in the Arctic and semiarid and arid regions. Dissolved organic carbon (DOC) concentrations are less than 10 mg C/L in most global inland waters and are generally high in high-latitude basins. Increasing global C inputs, burial, and CO2 emissions reported in the literature are confirmed by DISC-CARBON. Global river C export to oceans has been stable around 0.9 Pg yr-1. The long-term changes and spatial patterns of concentrations and fluxes of different C forms in the global river network unfold the combined influence of the lithology, climate, and hydrology of river basins, terrestrial and biological C sources, in-stream C transformations, and human interferences such as damming.", "keywords": ["global budget", "Arctic Regions", "Fresh Water", "General Chemistry", "15. Life on land", "carbon biogeochemistry", "Dissolved Organic Matter", "01 natural sciences", "river fluxes", "6. Clean water", "process-based hydrology-biogeochemistry model", "Rivers", "13. Climate action", "SDG 13 - Climate Action", "Environmental Chemistry", "Humans", "SDG 14 - Life Below Water", "14. Life underwater", "Hydrology", "spatiotemporal variations", "SDG 15 - Life on Land", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.1c04605"}, {"href": "https://doi.org/1871.1/d6f80066-698b-4a74-a44e-d83364279614"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Science%20%26amp%3B%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "1871.1/d6f80066-698b-4a74-a44e-d83364279614", "name": "item", "description": "1871.1/d6f80066-698b-4a74-a44e-d83364279614", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/1871.1/d6f80066-698b-4a74-a44e-d83364279614"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-12-02T00:00:00Z"}}, {"id": "2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/282542", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-22T16:22:34Z", "type": "Journal Article", "created": "2018-10-29", "title": "Nitrous oxide emissions from inland waters: Are IPCC estimates too high?", "description": "AbstractNitrous oxide (N2O) emissions from inland waters remain a major source of uncertainty in global greenhouse gas budgets. N2O emissions are typically estimated using emission factors (EFs), defined as the proportion of the terrestrial nitrogen (N) load to a water body that is emitted as N2O to the atmosphere. The Intergovernmental Panel on Climate Change (IPCC) has proposed EFs of 0.25% and 0.75%, though studies have suggested that both these values are either too high or too low. In this work, we develop a mechanistic modeling approach to explicitly predict N2O production and emissions via nitrification and denitrification in rivers, reservoirs and estuaries. In particular, we introduce a water residence time dependence, which kinetically limits the extent of denitrification and nitrification in water bodies. We revise existing spatially explicit estimates of N loads to inland waters to predict both lumped watershed and half\uffe2\uff80\uff90degree grid cell emissions and EFs worldwide, as well as the proportions of these emissions that originate from denitrification and nitrification. We estimate global inland water N2O emissions of 10.6\uffe2\uff80\uff9319.8\uffc2\uffa0Gmol\uffc2\uffa0N\uffc2\uffa0year\uffe2\uff88\uff921 (148\uffe2\uff80\uff93277\uffc2\uffa0Gg\uffc2\uffa0N\uffc2\uffa0year\uffe2\uff88\uff921), with reservoirs producing most N2O per unit area. Our results indicate that IPCC EFs are likely overestimated by up to an order of magnitude, and that achieving the magnitude of the IPCC's EFs is kinetically improbable in most river systems. Denitrification represents the major pathway of N2O production in river systems, whereas nitrification dominates production in reservoirs and estuaries.High\uffe2\uff80\uff90resolution mass spectrometry (HRMS) has become a vital tool for dissolved organic matter (DOM) characterization. The upward trend in HRMS analysis of DOM presents challenges in data comparison and interpretation among laboratories operating instruments with differing performance and user operating conditions. It is therefore essential that the community establishes metric ranges and compositional trends for data comparison with reference samples so that data can be robustly compared among research groups. To this end, four identically prepared DOM samples were each measured by 16 laboratories, using 17 commercially purchased instruments, using positive\uffe2\uff80\uff90ion and negative\uffe2\uff80\uff90ion mode electrospray ionization (ESI) HRMS analyses. The instruments identified ~1000 common ions in both negative\uffe2\uff80\uff90 and positive\uffe2\uff80\uff90ion modes over a wide range of m/z values and chemical space, as determined by van Krevelen diagrams. Calculated metrics of abundance\uffe2\uff80\uff90weighted average indices (H/C, O/C, aromaticity, and m/z) of the commonly detected ions showed that hydrogen saturation and aromaticity were consistent for each reference sample across the instruments, while average mass and oxygenation were more affected by differences in instrument type and settings. In this paper we present 32 metric values for future benchmarking. The metric values were obtained for the four different parameters from four samples in two ionization modes and can be used in future work to evaluate the performance of HRMS instruments.