The rate and pathway of ferrihydrite transformation in soil depends on the properties of the soil pore water and diffusion processes.
Significant rates of atmospheric dihydrogen (H2) consumption have been observed in temperate soils due to the activity of high-affinity enzymes, such as the group 1h [NiFe]-hydrogenase. We designed broadly inclusive primers targeting the large subunit gene (hhyL) of group 1h [NiFe]-hydrogenases for long-read sequencing to explore its taxonomic distribution across soils. This approach revealed a diverse collection of microorganisms harboring hhyL, including previously unknown groups and taxonomically not assignable sequences. Acidobacterial group 1h [NiFe]-hydrogenase genes were abundant and expressed in temperate soils. To support the participation of acidobacteria in H2 consumption, we studied two representative mesophilic soil acidobacteria, which expressed group 1h [NiFe]-hydrogenases and consumed atmospheric H2 during carbon starvation. This is the first time mesophilic acidobacteria, which are abundant in ubiquitous temperate soils, have been shown to oxidize H2 down to below atmospheric concentrations. As this physiology allows bacteria to survive periods of carbon starvation, it could explain the success of soil acidobacteria. With our long-read sequencing approach of group 1h [NiFe]-hydrogenase genes, we show that the ability to oxidize atmospheric levels of H2 is more widely distributed among soil bacteria than previously recognized and could represent a common mechanism enabling bacteria to persist during periods of carbon deprivation.The computational demand of the soil\uffe2\uff80\uff90structure interaction analysis for the design and assessment of structures, as well as for the evaluation of their life\uffe2\uff80\uff90cycle cost and risk exposure, has led the civil engineering community to the development of a variety of methods toward the model order reduction of the coupled soil\uffe2\uff80\uff90structure dynamic system in earthquake regions. Different approaches have been proposed in the past as computationally efficient alternatives to the conventional finite element model simulation of the complete soil\uffe2\uff80\uff90structure domain, such as the nonlinear lumped spring, the macroelement method, and the substructure partition method. Yet no approach was capable of capturing simultaneously the frequency\uffe2\uff80\uff90dependent dynamic properties along with the nonlinear behavior of the condensed segment of the overall soil\uffe2\uff80\uff90structure system under strong earthquake ground motion, thus generating an imbalance between the modeling refinement achieved for the soil and the structure. To this end, a dual frequency\uffe2\uff80\uff90dependent and intensity\uffe2\uff80\uff90dependent expansion of the lumped parameter modeling method is proposed in the current paper, materialized through a multiobjective algorithm, capable of closely approximating the behavior of the nonlinear dynamic system of the condensed segment. This is essentially the extension of an established methodology, also developed by the authors, in the inelastic domain. The efficiency of the proposed methodology is validated for the case of a bridge foundation system, wherein the seismic response is comparatively assessed for both the proposed method and the detailed finite element model. The above expansion is deemed a computationally efficient and reliable method for simultaneously considering the frequency and amplitude dependence of soil\uffe2\uff80\uff90foundation systems in the framework of nonlinear seismic analysis of soil\uffe2\uff80\uff90structure interaction systems.
", "keywords": ["Lumped parameter model", "Macroelement", "Model order reduction", "0211 other engineering and technologies", "Soil-structure interaction", "02 engineering and technology", "620", "0201 civil engineering"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/eqe.3063"}, {"href": "https://doi.org/10.1002/eqe.3063"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Earthquake%20Engineering%20%26amp%3B%20Structural%20Dynamics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/eqe.3063", "name": "item", "description": "10.1002/eqe.3063", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/eqe.3063"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-06-01T00:00:00Z"}}, {"id": "10.1002/etc.4147", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:14:23Z", "type": "Journal Article", "created": "2018-04-10", "title": "Nanomaterials in the environment: Behavior, fate, bioavailability, and effects-An updated review", "description": "Abstract \uffe2\uff80\uff83The present review covers developments in studies of nanomaterials (NMs) in the environment since our much cited review in 2008. We discuss novel insights into fate and behavior, metrology, transformations, bioavailability, toxicity mechanisms, and environmental impacts, with a focus on terrestrial and aquatic systems. Overall, the findings were that: 1) despite substantial developments, critical gaps remain, in large part due to the lack of analytical, modeling, and field capabilities, and also due to the breadth and complexity of the area; 2) a key knowledge gap is the lack of data on environmental concentrations and dosimetry generally; 3) substantial evidence shows that there are nanospecific effects (different from the effects of both ions and larger particles) on the environment in terms of fate, bioavailability, and toxicity, but this is not consistent for all NMs, species, and relevant processes; 4) a paradigm is emerging that NMs are less toxic than equivalent dissolved materials but more toxic than the corresponding bulk materials; and 5) translation of incompletely understood science into regulation and policy continues to be challenging. There is a developing consensus that NMs may pose a relatively low environmental risk, but because of uncertainty and lack of data in many areas, definitive conclusions cannot be drawn. In addition, this emerging consensus will likely change rapidly with qualitative changes in the technology and increased future discharges. Environ Toxicol Chem 2018;37:2029\uffe2\uff80\uff932063. \uffc2\uffa9 2018 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals, Inc. on behalf of SETAC.
", "keywords": ["aquatic and soil organisms", "hazard/risk assessment", "Nanoecotoxicity", "Biological Availability", "Environmental Exposure", "Nanometrology", "Aquatic and soil organisms; Nanometrology; Hazard/risk assessment; Nanoecotoxicity; Nanomaterials", "Ecotoxicology", "nanometrology", "01 natural sciences", "Nanostructures", "nanoecotoxicity", "13. Climate action", "Aquatic and soil organisms", "Oxidation-Reduction", "Hazard/risk assessment", "Ecosystem", "Nanomaterials", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.4147"}, {"href": "https://doi.org/10.1002/etc.4147"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Toxicology%20and%20Chemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/etc.4147", "name": "item", "description": "10.1002/etc.4147", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/etc.4147"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-04-06T00:00:00Z"}}, {"id": "10.1002/smll.201902081", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:14:29Z", "type": "Journal Article", "created": "2019-06-18", "title": "Untangling Cooperative Effects of Pyridinic and Graphitic Nitrogen Sites at Metal\u2010Free N\u2010Doped Carbon Electrocatalysts for the Oxygen Reduction Reaction", "description": "AbstractMetal\uffe2\uff80\uff90free carbon electrodes with well\uffe2\uff80\uff90defined composition and smooth topography are prepared via sputter deposition followed by thermal treatment with inert and reactive gases. X\uffe2\uff80\uff90ray photoelectron spectroscopy (XPS) and Raman spectroscopy show that three carbons of similar N/C content that differ in N\uffe2\uff80\uff90site composition are thus prepared: an electrode consisting of almost exclusively graphitic\uffe2\uff80\uff90N (NG), an electrode with predominantly pyridinic\uffe2\uff80\uff90N (NP), and one with \uffe2\uff89\uff881:1 NG:NP composition. These materials are used as model systems to investigate the activity of N\uffe2\uff80\uff90doped carbons in the oxygen reduction reaction (ORR) using voltammetry. Results show that selectivity toward 4e\uffe2\uff80\uff90reduction of O2 is strongly influenced by the NG/NP site composition, with the material possessing nearly uniform NG/NP composition being the only one yielding a 4e\uffe2\uff80\uff90reduction. Computational studies on model graphene clusters are carried out to elucidate the effect of N\uffe2\uff80\uff90site homogeneity on the reaction pathway. Calculations show that for pure NG\uffe2\uff80\uff90doping or NP\uffe2\uff80\uff90doping of model graphene clusters, adsorption of hydroperoxide and hydroperoxyl radical intermediates, respectively, is weak, thus favoring desorption prior to complete 4e\uffe2\uff80\uff90reduction to hydroxide. Clusters with mixed NG/NP sites display synergistic effects, suggesting that co\uffe2\uff80\uff90presence of these sites improves activity and selectivity by achieving high theoretical reduction potentials while facilitating retention of intermediates.The present study reports findings related to the treatment of polluted groundwater using macrophyte-assisted phytoremediation. The potential of three macrophyte species (Phragmites australis, Scirpus holoschoenus, and Typha angustifolia) to tolerate exposure to multi-metal(loid) polluted groundwater was first evaluated in mesocosms for 7- and 14-day batch testing. In the 7-day batch test, the polluted water was completely replaced\uffc2\uffa0and renewed after 7\uffc2\uffa0days, while for\uffc2\uffa014\uffc2\uffa0days exposure, the same polluted water, added in the first week, was maintained. The initial biochemical screening\uffc2\uffa0results of macrophytes indicated that the selected plants were more tolerant to the provided conditions with 14\uffc2\uffa0days of exposure. Based on these findings, the plants were exposed to HRT regimes of 15 and 30\uffc2\uffa0days. The results showed that P. australis and S. holoschoenus performed better than T. angustifolia, in terms of metal(loid) accumulation and removal, biomass production, and toxicity reduction. In addition, the translocation and compartmentalization of metal(loid)s were dose-dependent. At the 30-day loading rate (higher HRT), below-ground phytostabilization was greater than phytoaccumulation, whereas at the 15-day loading rate (lower HRT), below- and above-ground phytoaccumulation was the dominant metal(loid) removal mechanism. However, higher levels of toxicity were noted in the water at the 15-day loading rate. Overall, this\uffc2\uffa0study provides valuable insights for macrophyte-assisted phytoremediation of polluted (ground)water streams that can help to improve the design and implementation of phytoremediation systems.20% w/w. Biochar additions also significantly suppressed ambient CH(4) oxidation at all levels compared to unamended soil. The addition of biochar (5% w/w) to soil increased the sorption of atrazine and acetochlor compared to non-amended soils, resulting in decreased dissipation rates of these herbicides. The recalcitrance of the biochar suggests that it could be a viable carbon sequestration strategy, and might provide substantial net greenhouse gas benefits if the reductions in N(2)O production are lasting.", "keywords": ["Greenhouse Effect", "2. Zero hunger", "Toluidines", "Herbicides", "Minnesota", "Nitrous Oxide", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "01 natural sciences", "6. Clean water", "12. Responsible consumption", "Soil", "13. Climate action", "Charcoal", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Atrazine", "Adsorption", "Gases", "Methane", "Oxidation-Reduction", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2009.06.053"}, {"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.2009.06.053", "name": "item", "description": "10.1016/j.chemosphere.2009.06.053", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2009.06.053"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-10-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2019.02.158", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:01Z", "type": "Journal Article", "created": "2019-02-25", "title": "Bioreduction of selenate in an anaerobic biotrickling filter using methanol as electron donor", "description": "The anaerobic bioreduction of selenate, fed in step (up to 60\u202fmg.L-1) or continuous (\u223c7\u202fmg.L-1) trickling mode, in the presence of gas-phase methanol (4.3-50\u202fg\u202fm-3.h-1) was evaluated in a biotrickling filter (BTF). During the 48\u202fd of step-feed and 41\u202fd of continuous-feed operations, average selenate removal efficiencies (RE)\u202f>\u202f90% and \u223c68% was achieved, corresponding to a selenate reduction rate of, respectively, 7.3 and 4.5\u202fmg.L-1.d-1. During the entire period of BTF operation, 65.6% of the total Se fed as SeO42- was recovered. Concerning gas-phase methanol, the maximum elimination capacity (ECmax) was 46.4\u202fg\u202fm-3.h-1, with a RE\u202f>\u202f80%. Methanol was mainly utilized for acetogenesis and converted to volatile fatty acids (VFA) in the liquid-phase. Up to 5000\u202fmg.L-1 of methanol and 800\u202fmg.L-1 of acetate accumulated in the trickling liquid of the BTF.", "keywords": ["Bacteria", "Sewage", "Methanol", "0211 other engineering and technologies", "02 engineering and technology", "Selenic Acid", "Fatty Acids", " Volatile", "Archaea", "01 natural sciences", "6. Clean water", "Biodegradation", " Environmental", "Bioreactors", "Oxidation-Reduction", "Filtration", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2019.02.158"}, {"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.2019.02.158", "name": "item", "description": "10.1016/j.chemosphere.2019.02.158", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2019.02.158"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-01T00:00:00Z"}}, {"id": "10.1016/j.crm.2021.100375", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:03Z", "type": "Journal Article", "created": "2021-11-09", "title": "Playing the long game: Anticipatory action based on seasonal forecasts", "description": "Acting in advance of floods, drought and cyclones often requires decision-makers to work with weather forecasts. The inherently probabilistic nature of these forecasts can be problematic when deciding whether to act or not. Cost-loss analysis has previously been employed to support forecast based decision-making such as Forecast-based Financing (FbF), providing insight to when an FbF system has \u2018potential economic value\u2019 relative to a no-forecast alternative. One well-known limitation of cost-loss analysis is the difficulty of estimating losses (which vary with hazard magnitude and extent, and with the dynamics of population vulnerability and exposure). A less-explored limitation is ignorance of the temporal dynamics (sequencing) of costs and losses. That is, even if the potential economic value of a forecast system is high, the stochastic nature of the atmosphere and the probabilistic nature of forecasts could conspire over the first few forecasts to increase the expense of using the system over the no-forecast alternative. Thus, for a forecast-based action system to demonstrate value, it often needs to be used over a prolonged length of time. However, knowing exactly how long it must be used to guarantee value is unquantified. This presents difficulties to institutions mandated to protect those at risk, who must justify the use of limited funds to act in advance of a potential, but not definite disaster, whilst planning multi-year strategies. Here we show how to determine the period over which decision makers must use forecasts in order to be confident of achieving \u2018value\u2019 over a no-forecast alternative. Results show that in the context of seasonal forecasting it is plausible that more than a decade may pass before a FbF system will have some certainty of showing value, and that if a particular user requires an almost-certain guarantee that using a forecast will be better than a no-forecast strategy, they must hold out until a near-perfect forecast system is available. The implication: there is potential value in seasonal forecasts, but to exploit it one must be prepared to play the long game.", "keywords": ["Early warning", "Forecast-based financing", "13. Climate action", "Climate adaptation", "Seasonal climate forecasting", "Meteorology. Climatology", "0207 environmental engineering", "Anticipatory action", "Disaster risk reduction", "02 engineering and technology", "QC851-999", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://sro.sussex.ac.uk/id/eprint/103124/1/macleod_2021_CRM.pdf"}, {"href": "https://doi.org/10.1016/j.crm.2021.100375"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Climate%20Risk%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.crm.2021.100375", "name": "item", "description": "10.1016/j.crm.2021.100375", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.crm.2021.100375"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-01-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2006.03.003", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:13Z", "type": "Journal Article", "created": "2006-05-09", "title": "Effect Of Submergence-Emergence Sequence And Organic Matter Or Aluminosilicate Amendment On Metal Uptake By Woody Wetland Plant Species From Contaminated Sediments", "description": "Site-specific hydrological conditions affect the availability of trace metals for vegetation. In a greenhouse experiment, the effect of submersion on the metal uptake by the wetland plant species Salix cinerea and Populus nigra grown on a contaminated dredged sediment-derived soil and on an uncontaminated soil was evaluated. An upland hydrological regime for the polluted sediment caused elevated Cd concentrations in leaves and cuttings for both species. Emergence and soil oxidation after initial submersion of a polluted sediment resulted in comparable foliar Cd and Zn concentrations for S. cinerea as for the constant upland treatment. The foliar Cd and Zn concentrations were clearly higher than for submerged soils after initial upland conditions. These results point at the importance of submergence-emergence sequence for plant metal availability. The addition of foliar-based organic matter or aluminosilicates to the polluted sediment-derived soil in upland conditions did not decrease Cd and Zn uptake by S. cinerea.", "keywords": ["Geologic Sediments", "Biological Availability", "Water", "Salix", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water", "Plant Leaves", "Zinc", "Populus", "13. Climate action", "Metals", " Heavy", "Immersion", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Aluminum Silicates", "Seasons", "Oxidation-Reduction", "Ecosystem", "Plant Shoots", "Cadmium", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2006.03.003"}, {"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.2006.03.003", "name": "item", "description": "10.1016/j.envpol.2006.03.003", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2006.03.003"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-01-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2024.174881", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:57Z", "type": "Journal Article", "created": "2024-07-22", "title": "The time for ambitious action is now: Science-based recommendations for plastic chemicals to inform an effective global plastic treaty", "description": "Open AccessPublished by Elsevier Science, Amsterdam [u.a.]", "keywords": ["Faculty of Law", "330", "Human Rights", "United Nations", "[SDE.MCG]Environmental Sciences/Global Changes", "Microplastics", "International Cooperation", "/dk/atira/pure/core/keywords/TheFacultyOfLaw", "610", "Transparency", "PLASTIC CHEMICALS", "01 natural sciences", "12. Responsible consumption", "https://purl.org/becyt/ford/1.5", "11. Sustainability", "Human rights", "Humans", "Microplastics", " Global plastic treaty", " Human rights", " Nanoplastics", " Source reduction", " Transparency", "/dk/atira/pure/sustainabledevelopmentgoals/good_health_and_well_being; name=SDG 3 - Good Health and Well-being", "https://purl.org/becyt/ford/1", "info:eu-repo/classification/ddc/610", "PLASTIC POLLUTION", "0105 earth and related environmental sciences", "MICROPLASTICS", "16. Peace & justice", "Global plastic treaty", "Environmental Policy", "3. Good health", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "[SDE.MCG] Environmental Sciences/Global Changes", "Source reduction", "13. Climate action", "Global Plastics Treaty", "Environmental Pollutants", "Nanoplastics", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "Environmental Pollution", "Plastics"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2024.174881"}, {"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.2024.174881", "name": "item", "description": "10.1016/j.scitotenv.2024.174881", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2024.174881"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-11-01T00:00:00Z"}}, {"id": "10.1016/j.jhazmat.2009.05.074", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:16:43Z", "type": "Journal Article", "created": "2009-05-23", "title": "Enrichment Of Marsh Soils With Heavy Metals By Effect Of Anthropic Pollution", "description": "The impact of waste disposal on marsh soils was assessed in topsoil samples collected at eight randomly selected points in the salt marsh in Ramallosa (Pontevedra, Spain) at 4-month intervals for 2 years. Polluted soil samples were characterized in physico-chemical terms and their heavy metal contents determined by comparison with control, unpolluted samples. The results revealed a marked effect of waste discharges on the soils in the area, which have low contents in heavy metals under normal environmental conditions. In fact, the studied soils were found to contain substantial amounts of total and DTPA-extractable Cd, Cu, Pb and Zn. Based on the relationship of the redox potential with the DTPA-extractable Cd, Cu, Pb, and Zn contents of the soils, strongly reductive conditions raised the total contents in these elements by effect of their remaining in the soils as precipitated sulphides. Such contents, however, decreased as oxidative conditions gradually prevailed. The contents in DTPA-extractable metals increased with increasing Eh through the release of the metals in ionic form to the soil solution under oxidative conditions. The contents in heavy metals concentrating in the polluted soils were several times higher than those in the control soils (viz. 2 vs. 6 for Cd, 4 vs. 6 for Cu, 4 vs. 20 for Pb, and 2 vs. 15 for Zn, all in mgkg(-1)). This can be expected to influence the amounts of available heavy metals present in the soils, and hence the environmental quality of the area, in the near future. Based on its geoaccumulation index (Class >/=3 for Cd and Cu, and 1-4 for Pb and Zn), the Ramallosa marsh is highly polluted with Cd and moderately to highly polluted with Cu, Pb and Zn. The enrichment factors obtained confirm that the salt marsh is highly polluted (especially with Cd) as the primary result of anthropic activity.", "keywords": ["Industrial Waste", "Reproducibility of Results", "Agriculture", "Pentetic Acid", "15. Life on land", "Waste Disposal", " Fluid", "01 natural sciences", "6. Clean water", "Ion Exchange", "13. Climate action", "Metals", " Heavy", "Wetlands", "Linear Models", "Potentiometry", "Water Pollution", " Chemical", "Soil Pollutants", "Oxidation-Reduction", "Algorithms", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.jhazmat.2009.05.074"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Hazardous%20Materials", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jhazmat.2009.05.074", "name": "item", "description": "10.1016/j.jhazmat.2009.05.074", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jhazmat.2009.05.074"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-10-01T00:00:00Z"}}, {"id": "10.1038/s41396-019-0465-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:47Z", "type": "Journal Article", "created": "2019-06-27", "title": "Plant-driven niche differentiation of ammonia-oxidizing bacteria and archaea in global drylands", "description": "Abstract
Under controlled laboratory conditions, high and low ammonium availability are known to favor soil ammonia-oxidizing bacteria (AOB) and archaea (AOA) communities, respectively. However, whether this niche segregation is maintained under field conditions in terrestrial ecosystems remains unresolved, particularly at the global scale. We hypothesized that perennial vegetation might favor AOB vs. AOA communities compared with adjacent open areas devoid of perennial vegetation (i.e., bare soil) via several mechanisms, including increasing the amount of ammonium in soil. To test this niche-differentiation hypothesis, we conducted a global field survey including 80 drylands from 6 continents. Data supported our hypothesis, as soils collected under plant canopies had higher levels of ammonium, as well as higher richness (number of terminal restriction fragments; T-RFs) and abundance (qPCR amoA genes) of AOB, and lower richness and abundance of AOA, than those collected in open areas located between plant canopies. Some of the reported associations between plant canopies and AOA and AOB communities can be a consequence of the higher organic matter and available N contents found under plant canopies. Other aspects of soils associated with vegetation including shading and microclimatic conditions might also help explain our results. Our findings provide strong evidence for niche differentiation between AOA and AOB communities in drylands worldwide, advancing our understanding of their ecology and biogeography at the global scale.Methane (CH4) oxidation is the only known biological sink process for mitigating atmospheric and terrestrial emissions of CH4, a major greenhouse gas. Methane oxidation in an alluvial soil planted to rice (Oryza sativaL.) under long\uffe2\uff80\uff90term application of organic (compost with a C/N ratio of 21.71), and mineral fertilizers was measured in a field\uffe2\uff80\uff90cum\uffe2\uff80\uff90laboratory incubation study. Oxidation rates were quantified in terms of decrease in the concentration of CH4in the headspace of incubation vessels and expressed as half\uffe2\uff80\uff90life (t\uffc2\uffbd) values. Methane oxidation rates significantly differed among the treatments and growth stages of the rice crop. Methane oxidation rates were high at the maximum tillering and maturity stages, whereas they were low at grain\uffe2\uff80\uff90filling stage. Methane oxidation was low (t\uffc2\uffbd= 15.76 d) when provided with low concentration of CH4On the contrary, high concentration of CH4resulted in faster oxidation (t\uffc2\uffbd= 6.67 d), suggesting the predominance of \uffe2\uff80\uff9clow affinity oxidation\uffe2\uff80\uff9d in rice fields. Methane oxidation was stimulated following the application of mineral fertilizers or compost implicating nutrient limitation as one of the factors affecting the process. Combined application of compost and mineral fertilizer, however, inhibited CH4oxidation probably due to N immobilization by the added compost. The positive effect of mineral fertilizer on CH4oxidation rate was evident only at high CH4concentration (t\uffc2\uffbd= 4.80 d), while at low CH4concentration their was considerable suppression (t\uffc2\uffbd= 17.60 d). Further research may reveal that long\uffe2\uff80\uff90term application of fertilizers, organic or inorganic, may not inhibit CH4oxidation.
", "keywords": ["Crops", " Agricultural", "2. Zero hunger", "Minerals", "Tropical Climate", "Time Factors", "Chemical Phenomena", "Chemistry", " Physical", "Oryza", "04 agricultural and veterinary sciences", "Hydrogen-Ion Concentration", "15. Life on land", "01 natural sciences", "6. Clean water", "Soil", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Food", " Organic", "Fertilizers", "Oxidoreductases", "Methane", "Oxidation-Reduction", "Soil Microbiology", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.2134/jeq2006.0501"}, {"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/jeq2006.0501", "name": "item", "description": "10.2134/jeq2006.0501", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.2134/jeq2006.0501"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-11-01T00:00:00Z"}}, {"id": "10.1016/j.soildyn.2022.107366", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:10Z", "type": "Journal Article", "created": "2022-08-09", "title": "Seismic resonant metamaterials for the protection of an elastic-plastic SDOF system against vertically propagating seismic shear waves (SH) in nonlinear soil", "description": "Open AccessISSN:1879-341X", "keywords": ["Seismic risk mitigation method", "Seismic metamaterials", "0211 other engineering and technologies", "02 engineering and technology", "Seismic risk mitigation method; Seismic metamaterials; Metabarrier; Multi-mass resonators; meta-SSI; Domain reduction method (DRM); Nonlinear soil; Nonlinear structure; Energy-based approach (APEDR); Real-ESSI Simulator", "meta-SSI", "0201 civil engineering", "Domain reduction method (DRM)", "Nonlinear soil", "Energy-based approach (APEDR)", "Metabarrier", "Multi-mass resonators", "Nonlinear structure", "Real-ESSI Simulator"]}, "links": [{"href": "https://doi.org/10.1016/j.soildyn.2022.107366"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Dynamics%20and%20Earthquake%20Engineering", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soildyn.2022.107366", "name": "item", "description": "10.1016/j.soildyn.2022.107366", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soildyn.2022.107366"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-03-01T00:00:00Z"}}, {"id": "10.1016/j.soildyn.2024.108631", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:11Z", "type": "Journal Article", "created": "2024-04-24", "title": "Dynamic structure-soil-structure interaction for nuclear power plants", "description": "Open AccessThe paper explores the linear and nonlinear dynamic interaction between the reactor and the auxiliary buildings of a Nuclear Power Plant on a realistic layered soil profile, aiming to evaluate the effect of the auxiliary building on the seismic response of crucial components inside the reactor building. Based on realistic geometrical assumptions, highfidelity 3D finite element (FE) models of increasing sophistication are created in the Real-ESSI Simulator. Starting with elastic soil conditions and assuming tied soil\u2500foundation interfaces, it is shown that the rocking vibration mode of the soil\u2500reactor building system is amplified by the presence of the auxiliary building through a detrimental out-of-phase rotational interaction mechanism. Adding nonlinear interfaces, which allow for soil\u2500foundation detachment during seismic shaking, introduces higher excitation frequencies (above 10 Hz) in the foundation of the reactor building, leading to amplification effects in the resonant vibration response of the biological shield wall (incl. reactor vessel) inside the reactor building. A small amount of sliding at the soil\u2500foundation interface of the auxiliary building slightly decreases its response, thus reducing its aforementioned negative effects on the reactor building. When soil nonlinearity is accounted for, the rocking vibration mode of the soil\u2500reactor building system almost vanishes, thanks to the strongly nonlinear response of the underlying soil. This leads to a beneficial out-of-phase horizontal interaction mechanism between the two buildings, reducing the spectral accelerations at critical points inside the reactor building by up to 55% for frequencies close to the resonant vibration frequency of the auxiliary building. This implies that the neighboring buildings could offer mutual seismic protection to each other, in a similar way to the recently emerged seismic resonant metamaterials, provided that they are properly tuned during the design phase, accounting for soil and soil-foundation interface nonlinearities.", "keywords": ["Structure-Soil-Structure interaction (SSSI)", "Structure-Soil-Structure interaction (SSSI); Nuclear Power Plants (NPPs); Domain reduction method (DRM); Nonlinear interface; Nonlinear soil; Seismic resonant metamaterials; Meta-SSI", "FOS: Physical sciences", "Structure-soil-structure interaction (SSSI); Nuclear power plants (NPPs); Domain reduction method (DRM); Nonlinear interface; Nonlinear soil; Seismic resonant metamaterials; Meta-SSI", "Physics - Applied Physics", "Applied Physics (physics.app-ph)", "7. Clean energy", "Domain reduction method (DRM)", "Meta-SSI", "Nuclear Power Plants (NPPs)", "Nonlinear soil", "Structure-soil-structure interaction (SSSI)", "Nuclear power plants (NPPs)", "Nonlinear interface", "Seismic resonant metamaterials"]}, "links": [{"href": "https://doi.org/10.1016/j.soildyn.2024.108631"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Dynamics%20and%20Earthquake%20Engineering", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soildyn.2024.108631", "name": "item", "description": "10.1016/j.soildyn.2024.108631", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soildyn.2024.108631"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-01T00:00:00Z"}}, {"id": "10.1016/j.watres.2017.10.007", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:24Z", "type": "Journal Article", "created": "2017-10-27", "title": "The role of operating parameters and oxidative damage mechanisms of advanced chemical oxidation processes in the combat against antibiotic-resistant bacteria and resistance genes present in urban wastewater", "description": "An upsurge in the study of antibiotic resistance in the environment has been observed in the last decade. Nowadays, it is becoming increasingly clear that urban wastewater is a key source of antibiotic resistance determinants, i.e. antibiotic-resistant bacteria and antibiotic resistance genes (ARB&ARGs). Urban wastewater reuse has arisen as an important component of water resources management in the European Union and worldwide to address prolonged water scarcity issues. Especially, biological wastewater treatment processes (i.e. conventional activated sludge), which are widely applied in urban wastewater treatment plants, have been shown to provide an ideal environment for the evolution and spread of antibiotic resistance. The ability of advanced chemical oxidation processes (AOPs), e.g. light-driven oxidation in the presence of H2O2, ozonation, homogeneous and heterogeneous photocatalysis, to inactivate ARB and remove ARGs in wastewater effluents has not been yet evaluated through a systematic and integrated approach. Consequently, this review seeks to provide an extensive and critical appraisal on the assessment of the efficiency of these processes in inactivating ARB and removing ARGs in wastewater effluents, based on recent available scientific literature. It tries to elucidate how the key operating conditions may affect the process efficiency, while pinpointing potential areas for further research and major knowledge gaps which need to be addressed. Also, this review aims at shedding light on the main oxidative damage pathways involved in the inactivation of ARB and removal of ARGs by these processes. In general, the lack and/or heterogeneity of the available scientific data, as well as the different methodological approaches applied in the various studies, make difficult the accurate evaluation of the efficiency of the processes applied. Besides the operating conditions, the variable behavior observed by the various examined genetic constituents of the microbial community, may be directed by the process distinct oxidative damage mechanisms in place during the application of each treatment technology. For example, it was shown in various studies that the majority of cellular damage by advanced chemical oxidation may be on cell wall and membrane structures of the targeted bacteria, leaving the internal components of the cells relatively intact/able to repair damage. As a result, further in-depth mechanistic studies are required, to establish the optimum operating conditions under which oxidative mechanisms target internal cell components such as genetic material and ribosomal structures more intensively, thus conferring permanent damage and/or death and preventing potential post-treatment re-growth.", "keywords": ["Titanium", "Photolysis", "Bacteria", "Sewage", "Sulfates", "Ultraviolet Rays", "0211 other engineering and technologies", "Drug Resistance", " Microbial", "Hydrogen Peroxide", "02 engineering and technology", "Wastewater", "Oxidants", "01 natural sciences", "6. Clean water", "Water Purification", "12. Responsible consumption", "Oxidative Stress", "Ozone", "Genes", " Bacterial", "13. Climate action", "Antibiotic resistance Advanced chemical oxidation Inactivation mechanisms Wastewater treatment", "Drug Resistance", " Bacterial", "11. Sustainability", "Oxidation-Reduction", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.watres.2017.10.007"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.watres.2017.10.007", "name": "item", "description": "10.1016/j.watres.2017.10.007", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.watres.2017.10.007"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-02-01T00:00:00Z"}}, {"id": "10.1016/j.watres.2020.116748", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:24Z", "type": "Journal Article", "created": "2020-12-16", "title": "Electro-bioremediation of nitrate and arsenite polluted groundwater.", "description": "The coexistence of different pollutants in groundwater is a common threat. Sustainable and resilient technologies are required for their treatment. The present study aims to evaluate microbial electrochemical technologies (METs) for treating groundwater contaminated with nitrate (NO3-) while containing arsenic (in form of arsenite (As(III)) as a co-contaminant. The treatment was based on the combination of nitrate reduction to dinitrogen gas and arsenite oxidation to arsenate (exhibiting less toxicity, solubility, and mobility), which can be removed more easily in further post-treatment. We operated a bioelectrochemical reactor at continuous-flow mode with synthetic contaminated groundwater (33 mg N-NO3- L-1 and 5 mg As(III) L-1) identifying the key operational conditions. Different hydraulic retention times (HRT) were evaluated, reaching a maximum nitrate reduction rate of 519 g N-NO3- m3Net Cathodic Compartment d-1 at HRT of 2.3 h with a cathodic coulombic efficiency of around 100 %. Simultaneously, arsenic oxidation was complete at all HRT tested down to 1.6 h reaching an oxidation rate of up to 90 g As(III) m-3Net Reactor Volume d -1. Electrochemical and microbiological characterization of single granules suggested that arsenite at 5 mg L-1 did not have an inhibitory effect on a denitrifying biocathode mainly represented by Sideroxydans sp. Although the coexistence of abiotic and biotic arsenic oxidation pathways was shown to be likely, microbial arsenite oxidation linked to denitrification by Achromobacter sp. was the most probable pathway. This research paves the ground towards a real application for treating groundwater with widespread pollutants.", "keywords": ["Nitrates", "Arsenites", "0211 other engineering and technologies", "02 engineering and technology", "Bioremediaci\u00f3", "01 natural sciences", "6. Clean water", "Arsenic", "12. Responsible consumption", "Bioelectrochemistry", "Biodegradation", " Environmental", "13. Climate action", "Aig\u00fces subterr\u00e0nies -- Contaminaci\u00f3", "Denitrification", "Groundwater -- Pollution", "Desnitrificaci\u00f3", "Groundwater", "Oxidation-Reduction", "Bioremediation", "Water Pollutants", " Chemical", "Bioelectroqu\u00edmica", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.watres.2020.116748"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.watres.2020.116748", "name": "item", "description": "10.1016/j.watres.2020.116748", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.watres.2020.116748"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-02-01T00:00:00Z"}}, {"id": "10.1016/j.watres.2021.116940", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:24Z", "type": "Journal Article", "created": "2021-02-18", "title": "Micropollutants as internal probe compounds to assess UV fluence and hydroxyl radical exposure in UV/H2O2 treatment", "description": "Open AccessPublished by Elsevier Science, Amsterdam [u.a.]", "keywords": ["info:eu-repo/classification/ddc/550", "Photolysis", "550", "Hydroxyl Radical", "Ultraviolet Rays", "Humans", "Hydrogen Peroxide", "Oxidation-Reduction", "01 natural sciences", "Water Pollutants", " Chemical", "ddc:", "Water Purification", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.watres.2021.116940"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.watres.2021.116940", "name": "item", "description": "10.1016/j.watres.2021.116940", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.watres.2021.116940"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-05-01T00:00:00Z"}}, {"id": "10.1016/j.watres.2022.118628", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:24Z", "type": "Journal Article", "created": "2022-05-17", "title": "Investigation of hydrodynamic cavitation induced reactive oxygen species production in microchannels via chemiluminescent luminol oxidation reactions", "description": "Hydrodynamic cavitation was evaluated for its reactive oxygen species production in several convergent-divergent microchannel at the transition from micro to milli scale. Channel widths and heights were systematically varied to study the influence of geometrical parameters at the transitory scale. A photomultiplier tube was used for time-resolved photon detection and monitoring of the chemiluminescent luminol oxidation reactions, allowing for a contactless and in situ quantization of reactive oxygen species production in the channels. The radical production rates at various flow parameters were evaluated, showing an optimal yield per flow rate exists in the observed geometrical range. While cavitation cloud shedding was the prevailing regime in this type of channels, the photon arrival time analysis allowed for an investigation of the cavitation structure dynamics and their contribution to the chemical yield, revealing that radical production is not linked to the synchronous cavitation cloud collapse events. Instead, individual bubble collapses occurring throughout the cloud formation were recognized to be the source of the reactive oxygen species.", "keywords": ["convergent-divergent channels", "kemoluminiscenca", "free radicals", "Free radicals", "Photon counting", "microscale cavitation", "kavitacija", "info:eu-repo/classification/udc/532.528", "0404 agricultural biotechnology", "Microscale cavitation", "cavitation cloud shedding", "kavitacija", " prosti radikali", " kemoluminiscenca", "photon counting", "Convergent-divergent channels", "[SPI.FLUID] Engineering Sciences [physics]/Reactive fluid environment", "04 agricultural and veterinary sciences", "Luminol chemiluminescence", "Cavitation cloud shedding", "info:eu-repo/classification/udc/532", "Luminescent Measurements", "Hydrodynamics", "luminol chemiluminescence", "cavitation cloud shedding", " free radicals", " photon counting", " microscale cavitation", " luminol chemiluminescence", " convergent-divergent channels", "Luminol", "Reactive Oxygen Species", "0405 other agricultural sciences", "prosti radikali", "Oxidation-Reduction"]}, "links": [{"href": "https://doi.org/10.1016/j.watres.2022.118628"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.watres.2022.118628", "name": "item", "description": "10.1016/j.watres.2022.118628", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.watres.2022.118628"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-07-01T00:00:00Z"}}, {"id": "10.1021/acs.est.0c05203", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:29Z", "type": "Journal Article", "created": "2021-02-08", "title": "Mercury Reduction by Nanoparticulate Vivianite", "description": "Open AccessISSN:0013-936X", "keywords": ["abiotic Hg II reduction", "Chemical Sciences not elsewhere classified", "Physiology", "0211 other engineering and technologies", "02 engineering and technology", "Hg 0", "Hg II", "PO", "01 natural sciences", "Phosphates", "Environmental Sciences not elsewhere classified", "Ferrous Compounds", "Hg II reducers", "Molecular Biology", "ferrous iron phosphate mineral vivi.", "Ecosystem", "0105 earth and related environmental sciences", "Pharmacology", "Fe II content", "Ecology", "Nanoparticulate Vivianite Mercury", "Cell Biology", "Mercury", "6. Clean water", "Fe II 3", "13. Climate action", "Oxidation-Reduction", "Biological Sciences not elsewhere classified"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.0c05203"}, {"href": "https://doi.org/10.1021/acs.est.0c05203"}, {"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": "10.1021/acs.est.0c05203", "name": "item", "description": "10.1021/acs.est.0c05203", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.0c05203"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-02-08T00:00:00Z"}}, {"id": "10.1021/acs.est.1c03586", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:29Z", "type": "Journal Article", "created": "2021-11-02", "title": "Impact of Periodic Polarization on Groundwater Denitrification in Bioelectrochemical Systems.", "description": "Nitrate contamination is a common problem in groundwater around the world. Nitrate can be cathodically reduced in bioelectrochemical systems using autotrophic denitrifiers with low energy investment and without chemical addition. Successful denitrification was demonstrated in previous studies in both microbial fuel cells and microbial electrolysis cells (MECs) with continuous current flow, whereas the impact of intermittent current supply (e.g., in a fluidized-bed system) on denitrification and particularly the electron-storing capacity of the denitrifying electroactive biofilms (EABs) on the cathodes have not been studied in depth. In this study, two continuously fed MECs were operated in parallel under continuous and periodic polarization modes over 280 days, respectively. Under continuous polarization, the maximum denitrification rate reached 233 g NO3--N/m3/d with 98% nitrate removal (0.6 mg NO3--N/L in the effluent) with negligible intermediate production, while under a 30 s open-circuit/30 s polarization mode, 86% of nitrate was removed at a maximum rate of 205 g NO3--N/m3/d (4.5 mg NO3--N/L in the effluent) with higher N2O production (6.6-9.3 mg N/L in the effluent). Conversely, periodic polarization could be an interesting approach in other bioelectrochemical processes if the generation of chemical intermediates (partially reduced or oxidized) should be favored. Similar microbial communities dominated byGallionellaceaewere found in both MECs; however, swapping the polarization modes and the electrochemical analyses suggested that the periodically polarized EABs probably developed a higher ability for electron storage and transfer, which supported the direct electron transfer pathway in discontinuous operation or fluidized biocathodes.", "keywords": ["bioelectrochemical systems (BESs)", "periodic polarization", "Autotrophic Processes", "Technology and Engineering", "denitrification", "Nitrates", "AUTOTROPHIC DENITRIFICATION", "EABs", "Bioelectric Energy Sources", "NITRATE-CONTAMINATED GROUNDWATER", "02 engineering and technology", "6. Clean water", "REDUCTION", "REMOVAL", "13. Climate action", "Earth and Environmental Sciences", "BACTERIA", "ACETATE", "Denitrification", "MICROBIAL FUEL-CELLS", "ELECTRON-TRANSFER", "BIOFILM", "0210 nano-technology", "Groundwater", "STORAGE"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.1c03586"}, {"href": "https://doi.org/10.1021/acs.est.1c03586"}, {"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": "10.1021/acs.est.1c03586", "name": "item", "description": "10.1021/acs.est.1c03586", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.1c03586"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-11-02T00:00:00Z"}}, {"id": "10.1021/acs.est.1c08789", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:29Z", "type": "Journal Article", "created": "2022-04-18", "title": "Stabilization of Ferrihydrite and Lepidocrocite by Silicate during Fe(II)-Catalyzed Mineral Transformation: Impact on Particle Morphology and Silicate Distribution", "description": "Open AccessISSN:0013-936X", "keywords": ["Minerals", "magnetite", "Silicates", "elemental mapping", "Water", "Ferric Compounds", "01 natural sciences", "Catalysis", "Ferrosoferric Oxide", "atom exchange", "Soil", "iron", "redox", "goethite", "Oxidation-Reduction", "crystal morphology", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.1c08789"}, {"href": "https://doi.org/10.1021/acs.est.1c08789"}, {"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": "10.1021/acs.est.1c08789", "name": "item", "description": "10.1021/acs.est.1c08789", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.1c08789"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-04-18T00:00:00Z"}}, {"id": "10.1021/acs.est.2c03925", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:30Z", "type": "Journal Article", "created": "2022-08-23", "title": "Coexisting Goethite Promotes Fe(II)-Catalyzed Transformation of Ferrihydrite to Goethite", "description": "Open AccessISSN:0013-936X", "keywords": ["Minerals", "template-directed nucleation", "Fe(II)\u2212Fe(III) electron transfer", "recrystallization", "Water", "electron hopping", "Ferric Compounds", "01 natural sciences", "Catalysis", "Soil", "Isotopes", "13. Climate action", "Ferrous Compounds", "labile Fe(III)", "Oxidation-Reduction", "Iron Compounds", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.2c03925"}, {"href": "https://doi.org/10.1021/acs.est.2c03925"}, {"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": "10.1021/acs.est.2c03925", "name": "item", "description": "10.1021/acs.est.2c03925", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.2c03925"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-08-23T00:00:00Z"}}, {"id": "10.1021/acs.est.3c00434", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:30Z", "type": "Journal Article", "created": "2023-06-26", "title": "A New Approach for Investigating Iron Mineral Transformations in Soils and Sediments Using 57Fe-Labeled Minerals and 57Fe M\u00f6ssbauer Spectroscopy", "description": "Open AccessIron minerals in soils and sediments play important roles in many biogeochemical processes and therefore influence the cycling of major and trace elements and the fate of pollutants in the environment. However, the kinetics and pathways of Fe mineral recrystallization and transformation processes under environmentally relevant conditions are still elusive. Here, we present a novel approach enabling us to follow the transformations of Fe minerals added to soils or sediments in close spatial association with complex solid matrices including other minerals, organic matter, and microorganisms. Minerals enriched with the stable isotope 57Fe are mixed with soil or sediment, and changes in Fe speciation are subsequently studied by 57Fe M\u00f6ssbauer spectroscopy, which exclusively detects 57Fe. In this study, 57Fe-labeled ferrihydrite was synthesized, mixed with four soils differing in chemical and physical properties, and incubated for 12+ weeks under anoxic conditions. Our results reveal that the formation of crystalline Fe(III)(oxyhydr)oxides such as lepidocrocite and goethite was strongly suppressed, and instead formation of a green rust-like phase was observed in all soils. These results contrast those from Fe(II)-catalyzed ferrihydrite transformation experiments, where formation of lepidocrocite, goethite, and/or magnetite often occurs. The presented approach allows control over the composition and crystallinity of the initial Fe mineral, and it can be easily adapted to other experimental setups or Fe minerals. It thus offers great potential for future investigations of Fe mineral transformations in situ under environmentally relevant conditions, in both the laboratory and the field.", "keywords": ["Minerals", "550", "Iron", "iron reduction", "01 natural sciences", "Ferric Compounds", "ferrihydrite", "microcosm", "Soil", "Spectroscopy", " Mossbauer", "green rust", "13. Climate action", "Oxidation-Reduction", "Fe(II)-catalyzed transformation", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1021/acs.est.3c00434"}, {"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": "10.1021/acs.est.3c00434", "name": "item", "description": "10.1021/acs.est.3c00434", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.3c00434"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-06-26T00:00:00Z"}}, {"id": "10.1021/acs.est.3c01336", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:30Z", "type": "Journal Article", "created": "2023-06-09", "title": "Coprecipitation with Ferrihydrite Inhibits Mineralization of Glucuronic Acid in an Anoxic Soil", "description": "Open AccessISSN:0013-936X", "keywords": ["Soil", "Minerals", "Iron", "organic carbon", "anoxic soils", "organic carbon; anoxic soils; mineralization; iron minerals", "mineralization", "Ferric Compounds", "Oxidation-Reduction", "iron minerals", "Carbon"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.3c01336"}, {"href": "https://doi.org/10.1021/acs.est.3c01336"}, {"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": "10.1021/acs.est.3c01336", "name": "item", "description": "10.1021/acs.est.3c01336", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.3c01336"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-06-09T00:00:00Z"}}, {"id": "10.1021/acs.est.4c01519", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:30Z", "type": "Journal Article", "created": "2024-06-04", "title": "Iron Oxyhydroxide Transformation in a Flooded Rice Paddy Field and the Effect of Adsorbed Phosphate", "description": "Open AccessISSN:0013-936X", "keywords": ["2. Zero hunger", "Minerals", "Iron", "iron reduction", "Oryza", "15. Life on land", "Ferric Compounds", "ferrihydrite", "6. Clean water", "Phosphates", "Mossbauer", "Soil", "Spectroscopy", " Mossbauer", "Fe(II)-catalyzed", "lepidocrocite", "13. Climate action", "microsite", "Adsorption", "isotope", "Oxidation-Reduction"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.4c01519"}, {"href": "https://doi.org/10.1021/acs.est.4c01519"}, {"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": "10.1021/acs.est.4c01519", "name": "item", "description": "10.1021/acs.est.4c01519", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.4c01519"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-04T00:00:00Z"}}, {"id": "10.1021/acs.est.4c09261", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:30Z", "type": "Journal Article", "created": "2024-11-04", "title": "Geochemical Decoupling of Iron and Zinc during Transformation of Zn-Bearing Ferrihydrite in Reducing Sediments", "description": "Open AccessISSN:0013-936X", "keywords": ["Geologic Sediments", "zinc carbonate", "Iron", "Mossbauer spectroscopy", "X-ray absorption spectroscopy", "mineral transformation; Mossbauer spectroscopy; X-ray absorption spectroscopy; environmental speciation; green rust; zinc sulfide; zinc carbonate", "Ferric Compounds", "Zinc", "Spectroscopy", " Mossbauer", "green rust", "X-Ray Absorption Spectroscopy", "zinc sulfide", "Oxidation-Reduction", "mineral transformation", "environmental speciation"], "contacts": [{"organization": "Lefebvre, Pierre, Grigg, Andrew R. C., Kretzschmar, Ruben,", "roles": ["creator"]}]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.4c09261"}, {"href": "https://doi.org/10.1021/acs.est.4c09261"}, {"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": "10.1021/acs.est.4c09261", "name": "item", "description": "10.1021/acs.est.4c09261", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.4c09261"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-11-04T00:00:00Z"}}, {"id": "10.1021/acs.est.9b00345", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:30Z", "type": "Journal Article", "created": "2019-05-30", "title": "Cathode-Introduced Atomic H* for Fe(II)-Complex Regeneration to Effective Electro-Fenton Process at a Natural pH", "description": "Promotion of iron solubility using ligands is the preliminary step in the homogeneous electro-Fenton (EF) process at a mild pH, but the chelate efficiencies of most organic ligands are unsatisfactory, resulting in insufficient Fe(II) availability. In this study, atomic H* was, for the first time, introduced to the EF process to accelerate the regeneration of the Fe(II)-complex at a mild pH using a Ni-deposited carbon felt (Ni-CF) cathode. The introduction of atomic H* significantly elevated total organic carbon (TOC) abatement of ciprofloxacin (CIP) from 42% (CF) to 81% (Ni-CF) at a natural pH. In the presence of humic acids (HAs), atomic H* introduced via Ni-CF enhanced the CIP degradation rate to 10 times that of the CF at a mild pH. The electron spin resonance (ESR), density functional theory (DFT) calculations, electrochemical characterization, and in situ electrochemical Raman study clearly demonstrated that the atomic H* generated from the Ni-CF cathode was highly efficient at reducing Fe(III)-complexes at a natural pH. Additionally, the Ni-CF could generate atomic H* without significant nickel leaching. Thus, the atomic H* could continuously facilitate iron cycling and, consequently, enhance pollutant mineralization via the homogeneous EF process at a mild pH in an environmentally friendly manner.", "keywords": ["0211 other engineering and technologies", "Ferrous Compounds", "Hydrogen Peroxide", "02 engineering and technology", "Hydrogen-Ion Concentration", "Electrodes", "Ferric Compounds", "Oxidation-Reduction", "01 natural sciences", "Water Pollutants", " Chemical", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Xiao-Cheng Liu, Wen-Qiang Li, Yi-Ran Wang, Guan-Nan Zhou, Yi-Xuan Wang, Chuan-Shu He, Gong-Ming Wang, Yang Mu,", "roles": ["creator"]}]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.9b00345"}, {"href": "https://doi.org/10.1021/acs.est.9b00345"}, {"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": "10.1021/acs.est.9b00345", "name": "item", "description": "10.1021/acs.est.9b00345", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.9b00345"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-05-22T00:00:00Z"}}, {"id": "10.1093/femsec/fiae152", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:18:24Z", "type": "Journal Article", "created": "2024-11-19", "title": "A respiro-fermentative strategy to survive nanoxia in Acidobacterium capsulatum", "description": "AbstractMicrobial soil habitats are characterized by rapid shifts in substrate and nutrient availabilities, as well as chemical and physical parameters. One such parameter that can vary in soil is oxygen; thus, microbial survival is dependent on adaptation to this substrate. To better understand the metabolic abilities and adaptive strategies to oxygen-deprived environments, we combined genomics with transcriptomics of a model organism, Acidobacterium capsulatum, to explore the effect of decreasing, environmentally relevant oxygen concentrations. The decrease from 10 to 0.1\uffc2\uffa0\uffc2\uffb5M oxygen (3.6 to 0.036 pO2% present atmospheric level, respectively) caused the upregulation of the transcription of genes involved in signal transduction mechanisms, energy production and conversion and secondary metabolites biosynthesis, transport, and catabolism based on clusters of orthologous group categories. Contrary to established observations for aerobic metabolism, key genes in oxidative stress response were significantly upregulated at lower oxygen concentrations, presumably due to an NADH/NAD+ redox ratio imbalance as the cells transitioned into nanoxia. Furthermore, A. capsulatum adapted to nanoxia by inducing a respiro-fermentative metabolism and rerouting fluxes of its central carbon and energy pathways to adapt to high NADH/NAD+ redox ratios. Our results reveal physiological features and metabolic capabilities that allowed A. capsulatum to adapt to oxygen-limited conditions, which could expand into other environmentally relevant soil strains.Nitrification, the oxidation of ammonia to nitrate, is an essential process in the biogeochemical nitrogen cycle. The first step of nitrification, ammonia oxidation, is performed by three, often co-occurring guilds of chemolithoautotrophs: ammonia-oxidizing bacteria (AOB), archaea (AOA), and complete ammonia oxidizers (comammox). Substrate kinetics are considered to be a major niche-differentiating factor between these guilds, but few AOA strains have been kinetically characterized. Here, the ammonia oxidation kinetic properties of 12 AOA representing all major cultivated phylogenetic lineages were determined using microrespirometry. Members of the genus Nitrosocosmicus have the lowest affinity for both ammonia and total ammonium of any characterized AOA, and these values are similar to previously determined ammonia and total ammonium affinities of AOB. This contrasts previous assumptions that all AOA possess much higher substrate affinities than their comammox or AOB counterparts. The substrate affinity of ammonia oxidizers correlated with their cell surface area to volume ratios. In addition, kinetic measurements across a range of pH values supports the hypothesis that\uffe2\uff80\uff94like for AOB\uffe2\uff80\uff94ammonia and not ammonium is the substrate for the ammonia monooxygenase enzyme of AOA and comammox. Together, these data will facilitate predictions and interpretation of ammonia oxidizer community structures and provide a robust basis for establishing testable hypotheses on competition between AOB, AOA, and comammox.Ammonia oxidising archaea are among the most abundant living organisms on Earth and key microbial players in the global nitrogen cycle. They carry out oxidation of ammonia to nitrite, and their activity is relevant for both food security and climate change. Since their discovery nearly 20 years ago, major insights have been gained into their nitrogen and carbon metabolism, growth preferences and their mechanisms of adaptation to the environment, as well as their diversity, abundance and activity in the environment. Despite significant strides forward through the cultivation of novel organisms and omics-based approaches, there are still many knowledge gaps on their metabolism and the mechanisms which enable them to adapt to the environment. Ammonia oxidising microorganisms are typically considered metabolically streamlined and highly specialised. Here we review the physiology of ammonia oxidising archaea, with focus on aspects of metabolic versatility and regulation, and discuss these traits in the context of nitrifier ecology.Archaeal (AOA) and bacterial (AOB) ammonia-oxidizer responses to long-term field fertilization in a Mollisol soil were assessed through pyrosequencing of amoA genes. Long-term fertilization treatments including chemical fertilizer (NPK), NPK plus manure (NPKM) and no fertilization over 23 years altered soil properties resulting in significant shifts in AOA and AOB community composition and abundance. NPK exhibited a strong influence on AOA and AOB composition while the addition of manure neutralized the community change induced by NPK. NPK also led to significant soil acidification and enrichment of Nitrosotalea. Nitrosospira cluster 9 and 3c were the most abundant AOB populations with opposing responses to fertilization treatments. NPKM had the largest abundance of ammonia-oxidizers and highest potential nitrification activity (PNA), suggesting high N loss potential due to a doubling of nutrient input compared to NPK. PNA was strongly correlated to AOA and AOB community composition indicating that both were important in ammonium oxidization in this Mollisol soil. Total N and organic C were the most important factors driving shifts in AOA and AOB community composition. The AOA community was strongly correlated to the activities of all sugar hydrolysis associated soil enzymes and was more responsive to C and N input than AOB.
", "keywords": ["0301 basic medicine", "2. Zero hunger", "Bacteria", "Agriculture", "Sequence Analysis", " DNA", "04 agricultural and veterinary sciences", "15. Life on land", "Archaea", "Biota", "Article", "6. Clean water", "Genes", " Archaeal", "03 medical and health sciences", "Ammonia", "Genes", " Bacterial", "0401 agriculture", " forestry", " and fisheries", "Fertilizers", "Oxidation-Reduction", "Soil Microbiology"]}, "links": [{"href": "https://doi.org/10.1038/srep28981"}, {"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/srep28981", "name": "item", "description": "10.1038/srep28981", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/srep28981"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-06-30T00:00:00Z"}}, {"id": "10.1038/srep32791", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:55Z", "type": "Journal Article", "created": "2016-09-06", "title": "Responses Of Soil Hydrolytic Enzymes, Ammonia-Oxidizing Bacteria And Archaea To Nitrogen Applications In A Temperate Grassland In Inner Mongolia", "description": "AbstractWe used a seven-year urea gradient applied field experiment to investigate the effects of nitrogen (N) applications on soil N hydrolytic enzyme activity and ammonia-oxidizing microbial abundance in a typical steppe ecosystem in Inner Mongolia. The results showed that N additions inhibited the soil N-related hydrolytic enzyme activities, especially in 392\uffe2\uff80\uff89kg N ha\uffe2\uff88\uff921\uffe2\uff80\uff89yr\uffe2\uff88\uff921 treatment. As N additions increased, the amoA gene copy ratios of ammonia-oxidizing archaea (AOA) to ammonia-oxidizing bacteria (AOB) decreased from 1.13 to 0.65. Pearson correlation analysis showed that the AOA gene copies were negatively related with NH4+-N content. However, the AOB gene copies were positively correlated with NO3\uffe2\uff88\uff92-N content. Moderate N application rates (56\uffe2\uff80\uff93224\uffe2\uff80\uff89kg N ha\uffe2\uff88\uff921\uffe2\uff80\uff89yr\uffe2\uff88\uff921) accompanied by P additions are beneficial to maintaining the abundance of AOB, as opposed to the inhibition of highest N application rate (392\uffe2\uff80\uff89kg N ha\uffe2\uff88\uff921\uffe2\uff80\uff89yr\uffe2\uff88\uff921) on the abundance of AOB. This study suggests that the abundance of AOB and AOA would not decrease unless N applications exceed 224\uffe2\uff80\uff89kg N ha\uffe2\uff88\uff921\uffe2\uff80\uff89yr\uffe2\uff88\uff921 in temperate grasslands in Inner Mongolia.
", "keywords": ["2. Zero hunger", "China", "Bacteria", "Nitrogen", "Hydrolysis", "04 agricultural and veterinary sciences", "15. Life on land", "Archaea", "Grassland", "Nitrification", "Article", "Soil", "Ammonia", "0401 agriculture", " forestry", " and fisheries", "Fertilizers", "Oxidation-Reduction", "Ecosystem", "Soil Microbiology"]}, "links": [{"href": "https://doi.org/10.1038/srep32791"}, {"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/srep32791", "name": "item", "description": "10.1038/srep32791", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/srep32791"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-09-06T00:00:00Z"}}, {"id": "10.1039/d2em00290f", "type": "Feature", "geometry": null, "properties": {"updated": "2026-07-25T16:17:57Z", "type": "Journal Article", "created": "2022-09-22", "title": "Ferrihydrite transformations in flooded paddy soils: rates, pathways, and product spatial distributions", "description": "The rate and pathway of ferrihydrite transformation in soil depends on the properties of the soil pore water and diffusion processes.
We studied the transformation of 57Fe-labelled ferrihydrite and lepidocrocite mixed with a flooded paddy soil by using 57Fe-M\uffc3\uffb6ssbauer spectroscopy.Ferrihydrite, a poorly crystalline Fe(iii)-oxyhydroxide, is abundant in soils and is often found associated with organic matter.