Stable isotope labeling of agricultural polyesters enables demonstration of their microbial utilization in soils.
Stable isotope labeling of agricultural polyesters enables demonstration of their microbial utilization in soils.
Metasurfaces have emerged as a breakthrough platform for manipulating light at the nanoscale and enabling on\uffe2\uff80\uff90demand optical functionalities for next\uffe2\uff80\uff90generation biosensing, imaging, and light\uffe2\uff80\uff90generating photonic devices. However, translating this technology to practical applications requires low\uffe2\uff80\uff90cost and high\uffe2\uff80\uff90throughput fabrication methods. Due to the limited choice of materials with suitable optical properties, it is particularly challenging to produce metasurfaces for the technologically relevant mid\uffe2\uff80\uff90infrared spectral range. These constraints are overcome by realizing functional metasurfaces on almost completely transparent free\uffe2\uff80\uff90standing metal\uffe2\uff80\uff90oxide membranes. A versatile nanofabrication process is developed and implemented for highly efficient dielectric and plasmonic mid\uffe2\uff80\uff90infrared metasurfaces with wafer\uffe2\uff80\uff90scale and complementary metal\uffe2\uff80\uff93oxide\uffe2\uff80\uff93semiconductor (CMOS)\uffe2\uff80\uff90compatible manufacturing techniques. The advantages of this method are revealed by demonstrating highly uniform and functional metasurfaces, including high\uffe2\uff80\uff90Q structures enabling fine spectral selectivity, large\uffe2\uff80\uff90area metalenses\uffc2\uffa0with\uffc2\uffa0diffraction\uffe2\uff80\uff90limited focusing capabilities, and birefringent metasurfaces providing polarization control at record\uffe2\uff80\uff90high conversion efficiencies.\uffc2\uffa0 Aluminum plasmonic devices and their integration into microfluidics for real\uffe2\uff80\uff90time and label\uffe2\uff80\uff90free mid\uffe2\uff80\uff90infrared biosensing of proteins and lipid vesicles are further demonstrated. The versatility of this approach and its compatibility with mass\uffe2\uff80\uff90production processes bring infrared metasurfaces markedly closer to commercial applications, such as thermal imaging, spectroscopy, and biosensing.
Changes in fire regime of boreal forests in response to climate warming are expected to impact postfire recovery. However, quantitative data on how managed forests sustain and recover from recent fire disturbance are limited.
Two years after a large wildfire in managed even\uffe2\uff80\uff90aged boreal forests in Sweden, we investigated how recovery of aboveground and belowground communities, that is, understory vegetation and soil microbial and faunal communities, responded to variation in the severity of soil (i.e., consumption of soil organic matter) and canopy fires (i.e., tree mortality).
While fire overall enhanced diversity of understory vegetation through colonization of fire adapted plant species, it reduced the abundance and diversity of soil biota. We observed contrasting effects of tree\uffe2\uff80\uff90 and soil\uffe2\uff80\uff90related fire severity on survival and recovery of understory vegetation and soil biological communities. Severe fires that killed overstory Pinus sylvestris promoted a successional stage dominated by the mosses Ceratodon purpureus and Polytrichum juniperinum, but reduced regeneration of tree seedlings and disfavored the ericaceous dwarf\uffe2\uff80\uff90shrub Vaccinium vitis\uffe2\uff80\uff90idaea and the grass Deschampsia flexuosa. Moreover, high tree mortality from fire reduced fungal biomass and changed fungal community composition, in particular that of ectomycorrhizal fungi, and reduced the fungivorous soil Oribatida. In contrast, soil\uffe2\uff80\uff90related fire severity had little impact on vegetation composition, fungal communities, and soil animals. Bacterial communities responded to both tree\uffe2\uff80\uff90 and soil\uffe2\uff80\uff90related fire severity.
Synthesis: Our results 2\uffe2\uff80\uff89years postfire suggest that a change in fire regime from a historically low\uffe2\uff80\uff90severity ground fire regime, with fires that mainly burns into the soil organic layer, to a stand\uffe2\uff80\uff90replacing fire regime with a high degree of tree mortality, as may be expected with climate change, is likely to impact the short\uffe2\uff80\uff90term recovery of stand structure and above\uffe2\uff80\uff90 and belowground species composition of even\uffe2\uff80\uff90aged P.\uffe2\uff80\uff89sylvestris boreal forests.
The land surface controls the partitioning of water and energy fluxes and therefore plays a crucial role in the climate system. The coupling between soil moisture and air temperature, in particular, has been shown to affect the severity and occurrence of temperature extremes and heat waves. Here we study soil moisture\uffe2\uff80\uff90temperature coupling in five land surface models, focusing on the terrestrial segment of the coupling in the warm season. All models are run off\uffe2\uff80\uff90line over a common period with identical atmospheric forcing data, in order to allow differences in the results to be attributed to the models' partitioning of energy and water fluxes. Coupling is calculated according to two semiempirical metrics, and results are compared to observational flux tower data. Results show that the locations of the global hot spots of soil moisture\uffe2\uff80\uff90temperature coupling are similar across all models and for both metrics. In agreement with previous studies, these areas are located in transitional climate regimes. The magnitude and local patterns of model coupling, however, can vary considerably. Model coupling fields are compared to tower data, bearing in mind the limitations in the geographical distribution of flux towers and the differences in representative area of models and in situ data. Nevertheless, model coupling correlates in space with the tower\uffe2\uff80\uff90based results (r = 0.5\uffe2\uff80\uff930.7), with the multimodel mean performing similarly to the best\uffe2\uff80\uff90performing model. Intermodel differences are also found in the evaporative fractions and may relate to errors in model parameterizations and ancillary data of soil and vegetation characteristics.", "keywords": ["ENVIRONMENT SIMULATOR JULES", "FLUXES", "0207 environmental engineering", "02 engineering and technology", "01 natural sciences", "CO2 EXCHANGE", "models", "WATER", "SCALE", "Research Articles", "0105 earth and related environmental sciences", "land surface", "CARBON-DIOXIDE EXCHANGE", "eartH2Observe", "temperature", "15. Life on land", "DECIDUOUS FOREST", "CLIMATE", "EVAPORATION", "VARIABILITY", "13. Climate action", "Earth and Environmental Sciences", "BALANCE", "land surface models", "SENSIBLE HEAT", "land-atmosphere interactions", "soil moisture"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2017JD027346"}, {"href": "https://doi.org/10.1002/2017JD027346"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Atmospheres", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/2017JD027346", "name": "item", "description": "10.1002/2017JD027346", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/2017JD027346"}, {"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": "10.1002/2017JG004269", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:14:25Z", "type": "Journal Article", "created": "2017-12-18", "title": "Soil Carbon Dynamics in Soybean Cropland and Forests in Mato Grosso, Brazil", "description": "AbstractClimate and land use models predict that tropical deforestation and conversion to cropland will produce a large flux of soil carbon (C) to the atmosphere from accelerated decomposition of soil organic matter (SOM). However, the C flux from the deep tropical soils on which most intensive crop agriculture is now expanding remains poorly constrained. To quantify the effect of intensive agriculture on tropical soil C, we compared C stocks, radiocarbon, and stable C isotopes to 2\uffc2\uffa0m depth from forests and soybean cropland created from former pasture in Mato Grosso, Brazil. We hypothesized that soil disturbance, higher soil temperatures (+2\uffc2\uffb0C), and lower OM inputs from soybeans would increase soil C turnover and deplete C stocks relative to nearby forest soils. However, we found reduced C concentrations and stocks only in surface soils (0\uffe2\uff80\uff9310\uffc2\uffa0cm) of soybean cropland compared with forests, and these differences could be explained by soil mixing during plowing. The amount and \uffce\uff9414C of respired CO2 to 50\uffc2\uffa0cm depth were significantly lower from soybean soils, yet CO2 production at 2\uffc2\uffa0m deep was low in both forest and soybean soils. Mean surface soil \uffce\uffb413C decreased by 0.5\uffe2\uff80\uffb0 between 2009 and 2013 in soybean cropland, suggesting low OM inputs from soybeans. Together these findings suggest the following: (1) soil C is relatively resistant to changes in land use and (2) conversion to cropland caused a small, measurable reduction in the fast\uffe2\uff80\uff90cycling C pool through reduced OM inputs, mobilization of older C from soil mixing, and/or destabilization of SOM in surface soils.
", "keywords": ["tropical forest", "2. Zero hunger", "Life on Land", "land use", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "Soil carbon", "Geophysics", "Tropical forest", "Isotopes", "13. Climate action", "Land use", "Earth Sciences", "0401 agriculture", " forestry", " and fisheries", "soil carbon", "Brazil", "isotopes", "Research Articles", "agriculture"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2017JG004269"}, {"href": "https://escholarship.org/content/qt4jm295dz/qt4jm295dz.pdf"}, {"href": "https://doi.org/10.1002/2017JG004269"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Biogeosciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/2017JG004269", "name": "item", "description": "10.1002/2017JG004269", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/2017JG004269"}, {"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": "10.1002/2017jg004269", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:14:25Z", "type": "Journal Article", "created": "2017-12-18", "title": "Soil Carbon Dynamics in Soybean Cropland and Forests in Mato Grosso, Brazil", "description": "AbstractClimate and land use models predict that tropical deforestation and conversion to cropland will produce a large flux of soil carbon (C) to the atmosphere from accelerated decomposition of soil organic matter (SOM). However, the C flux from the deep tropical soils on which most intensive crop agriculture is now expanding remains poorly constrained. To quantify the effect of intensive agriculture on tropical soil C, we compared C stocks, radiocarbon, and stable C isotopes to 2\uffc2\uffa0m depth from forests and soybean cropland created from former pasture in Mato Grosso, Brazil. We hypothesized that soil disturbance, higher soil temperatures (+2\uffc2\uffb0C), and lower OM inputs from soybeans would increase soil C turnover and deplete C stocks relative to nearby forest soils. However, we found reduced C concentrations and stocks only in surface soils (0\uffe2\uff80\uff9310\uffc2\uffa0cm) of soybean cropland compared with forests, and these differences could be explained by soil mixing during plowing. The amount and \uffce\uff9414C of respired CO2 to 50\uffc2\uffa0cm depth were significantly lower from soybean soils, yet CO2 production at 2\uffc2\uffa0m deep was low in both forest and soybean soils. Mean surface soil \uffce\uffb413C decreased by 0.5\uffe2\uff80\uffb0 between 2009 and 2013 in soybean cropland, suggesting low OM inputs from soybeans. Together these findings suggest the following: (1) soil C is relatively resistant to changes in land use and (2) conversion to cropland caused a small, measurable reduction in the fast\uffe2\uff80\uff90cycling C pool through reduced OM inputs, mobilization of older C from soil mixing, and/or destabilization of SOM in surface soils.Metasurfaces have emerged as a breakthrough platform for manipulating light at the nanoscale and enabling on\uffe2\uff80\uff90demand optical functionalities for next\uffe2\uff80\uff90generation biosensing, imaging, and light\uffe2\uff80\uff90generating photonic devices. However, translating this technology to practical applications requires low\uffe2\uff80\uff90cost and high\uffe2\uff80\uff90throughput fabrication methods. Due to the limited choice of materials with suitable optical properties, it is particularly challenging to produce metasurfaces for the technologically relevant mid\uffe2\uff80\uff90infrared spectral range. These constraints are overcome by realizing functional metasurfaces on almost completely transparent free\uffe2\uff80\uff90standing metal\uffe2\uff80\uff90oxide membranes. A versatile nanofabrication process is developed and implemented for highly efficient dielectric and plasmonic mid\uffe2\uff80\uff90infrared metasurfaces with wafer\uffe2\uff80\uff90scale and complementary metal\uffe2\uff80\uff93oxide\uffe2\uff80\uff93semiconductor (CMOS)\uffe2\uff80\uff90compatible manufacturing techniques. The advantages of this method are revealed by demonstrating highly uniform and functional metasurfaces, including high\uffe2\uff80\uff90Q structures enabling fine spectral selectivity, large\uffe2\uff80\uff90area metalenses\uffc2\uffa0with\uffc2\uffa0diffraction\uffe2\uff80\uff90limited focusing capabilities, and birefringent metasurfaces providing polarization control at record\uffe2\uff80\uff90high conversion efficiencies.\uffc2\uffa0 Aluminum plasmonic devices and their integration into microfluidics for real\uffe2\uff80\uff90time and label\uffe2\uff80\uff90free mid\uffe2\uff80\uff90infrared biosensing of proteins and lipid vesicles are further demonstrated. The versatility of this approach and its compatibility with mass\uffe2\uff80\uff90production processes bring infrared metasurfaces markedly closer to commercial applications, such as thermal imaging, spectroscopy, and biosensing.Long amplicon metabarcoding has opened the door for phylogenetic analysis of the largely unknown communities of microeukaryotes in soil. Here, we amplified and sequenced the ITS and LSU regions of the rDNA operon (around 1500\uffc2\uffa0bp) from grassland soils using PacBio SMRT sequencing. We tested how three different methods for generation of operational taxonomic units (OTUs) effected estimated richness and identified taxa, and how well large\uffe2\uff80\uff90scale ecological patterns associated with shifting environmental conditions were recovered in data from the three methods. The field site at Kungs\uffc3\uffa4ngen Nature Reserve has drawn frequent visitors since Linnaeus's time, and its species rich vegetation includes the largest population of Fritillaria meleagris in Sweden. To test the effect of different OTU generation methods, we sampled soils across an abrupt moisture transition that divides the meadow community into a Carex acuta dominated plant community with low species richness in the wetter part, which is visually distinct from the mesic\uffe2\uff80\uff90dry part that has a species rich grass\uffe2\uff80\uff90dominated plant community including a high frequency of F.\uffc2\uffa0meleagris. We used the moisture and plant community transition as a framework to investigate how detected belowground microeukaryotic community composition was influenced by OTU generation methods. Soil communities in both moisture regimes were dominated by protists, a large fraction of which were taxonomically assigned to Ciliophora (Alveolata) while 30%\uffe2\uff80\uff9340% of all reads were assigned to kingdom Fungi. Ecological patterns were consistently recovered irrespective of OTU generation method used. However, different methods strongly affect richness estimates and the taxonomic and phylogenetic resolution of the characterized community with implications for how well members of the microeukaryotic communities can be recognized in the data.
", "keywords": ["580", "species hypothesis", "Ekologi", "0301 basic medicine", "0303 health sciences", "Ecology", "rDNA", "Biological Systematics", "15. Life on land", "03 medical and health sciences", "14. Life underwater", "ITS", "Research Articles", "clustering"]}, "links": [{"href": "https://pub.epsilon.slu.se/27699/1/eshghi-sahraei-s-et-al-220505.pdf"}, {"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.8676"}, {"href": "https://doi.org/10.1002/ece3.8676"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecology%20and%20Evolution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/ece3.8676", "name": "item", "description": "10.1002/ece3.8676", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/ece3.8676"}, {"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": "10.1002/ece3.9322", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:14:28Z", "type": "Journal Article", "created": "2022-09-22", "title": "Impacts of insect frass and cadavers on soil surface litter decomposition along a tropical forest temperature gradient", "description": "AbstractInsect herbivores play important roles in shaping many ecosystem processes, but how climate change will alter the effects of insect herbivory are poorly understood. To address this knowledge gap, we quantified for the first time how insect frass and cadavers affected leaf litter decomposition rates and nutrient release along a highly constrained 4.3\uffc2\uffb0C mean annual temperature (MAT) gradient in a Hawaiian montane tropical wet forest. We constructed litterbags of standardized locally sourced leaf litter, with some amended with insect frass + cadavers to produce treatments designed to simulate ambient (Control\uffc2\uffa0=\uffc2\uffa0no amendment), moderate (Amended\uffe2\uff80\uff90Low\uffc2\uffa0=\uffc2\uffa02\uffe2\uff80\uff89\uffc3\uff97\uffe2\uff80\uff89Control level), or severe (Amended\uffe2\uff80\uff90High\uffc2\uffa0=\uffc2\uffa011\uffe2\uff80\uff89\uffc3\uff97\uffe2\uff80\uff89Control level) insect outbreak events. Multiple sets of these litterbags were deployed across the MAT gradient, with individual litterbags collected periodically over one\uffe2\uff80\uff89year to assess how rising MAT altered the effects of insect deposits on litter decomposition rates and nitrogen (N) release. Increased MAT and insect inputs additively increased litter decomposition rates and N immobilization rates, with effects being stronger for Amended\uffe2\uff80\uff90High litterbags. However, the apparent temperature sensitivity (Q10) of litter decomposition was not clearly affected by amendments. The effects of adding insect deposits in this study operated differently than the slower litter decomposition and greater N mobilization rates often observed in experiments which use chemical fertilizers (e.g., urea, ammonium nitrate). Further research is required to understand mechanistic differences between amendment types. Potential increases in outbreak\uffe2\uff80\uff90related herbivore deposits coupled with climate warming will accelerate litter decomposition and nutrient cycling rates with short\uffe2\uff80\uff90term consequences for nutrient cycling and carbon storage in tropical montane wet forests.Comprehensive experimental quantification and mapping of the aggregation and dispersion state of engineered nanoparticles (NPs) in the presence of humic substances is a great challenge. Dissipative particle dynamic (DPD) simulation was adopted to investigate the aggregation and dispersion mechanisms of NPs in the presence of a humic substance analog. Twelve different types of NPs including 2 metal-based NPs, 7 metal oxide-based NPs, and 3 carbon-based NPs in pure water (pH 3.0) and algae medium (pH 8.0) in the presence of a humic substance analogy were selected for experimental verification of the DPD simulation results. In agreement with results obtained with dynamic light scattering and phase analysis light scattering techniques, the simulations demonstrated that the presence of humic substances reduced the aggregation extent of the NPs. The DPD simulations showed that the stability and dispersity of the NPs increased first, and then decreased with increasing concentrations of humic substances. Moreover, there existed a concentration of humic substances where the NPs became more stable and more dispersed, which was experimentally verified in the case of all the NPs in the pure water and in the algae medium. Furthermore, theory and simulation indicate that both hydrophobic and hydrogen interaction play an important role in controlling the formation of NP aggregates in the presence of humic substances. Electrostatic interaction and steric repulsion are the main mechanisms underlying the effects of humic substances on the aqueous dispersion stability of NPs. Environ Toxicol Chem 2018;37:1024\uffe2\uff80\uff931031. \uffc2\uffa9 2017 SETAC
", "keywords": ["13. Climate action", "Static Electricity", "Nanoparticles", "Nanotechnology", "Water", "Computer Simulation", "14. Life underwater", "Hydrogen-Ion Concentration", "Particle Size", "Hydrophobic and Hydrophilic Interactions", "01 natural sciences", "Humic Substances", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://setac.onlinelibrary.wiley.com/doi/pdf/10.1002/etc.4059"}, {"href": "https://doi.org/10.1002/etc.4059"}, {"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.4059", "name": "item", "description": "10.1002/etc.4059", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/etc.4059"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-12-14T00:00:00Z"}}, {"id": "10.1002/hyp.14667", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:14:30Z", "type": "Journal Article", "created": "2022-08-09", "title": "Non\u2010linearity in event runoff generation in a small agricultural catchment", "description": "AbstractUnderstanding the role of soil moisture and other controls in runoff generation is important for predicting runoff across scales. This paper aims to identify the degree of non\uffe2\uff80\uff90linearity of the relationship between event peak runoff and potential controls for different runoff generation mechanisms in a small agricultural catchment. The study is set in the 66\uffe2\uff80\uff89ha Hydrological Open Air Laboratory, Austria, where discharge was measured at the catchment outlet and for 11 sub\uffe2\uff80\uff90catchments or hillslopes with different runoff generation mechanisms. Peak runoff of 73 events was related to three potential controls: event precipitation, soil moisture and groundwater levels. The results suggest that the hillslopes dominated by ephemeral overland flow exhibit the most non\uffe2\uff80\uff90linear runoff generation behaviour for its controls; runoff is only generated above a threshold of 95% of the maximum soil moisture. Runoff generation through tile drains and in wetlands is more linear. The largest winter and spring events at the catchment outlet are caused by runoff from hillslopes with shallow flow paths (ephemeral overland flow and tile drainage mechanisms), while the largest summer events are caused by other hillslopes, those with deeper flow paths or with saturation areas throughout the year. Therefore, the response of the entire catchment is a mix of the various mechanisms, and the groundwater contribution makes the response more linear. The implications for hydrological modelling are discussed.Meeting the energy and nitrogen (N) requirements of high\uffe2\uff80\uff90performing ruminants at the same time as avoiding digestive disturbances (i.e. rumen acidosis) is a key priority in ruminant nutrition. The present study evaluated the effect of a cereal ammoniation treatment, in which barley grains are combined with urea and enzymes that catalyze the conversion of urea to ammonia to optimize rumen function. Twelve rumen cannulated sheep were randomly divided into two groups and fed a diet containing 60% of ammoniated barley (AMM) or untreated barley supplemented with urea (CTL) to investigate the impact on rumen fermentation and feed utilization.
RESULTSAMM had higher total N content and effective rumen degradable N than untreated barely. AMM sheep had a consistently higher rumen pH throughout the day (6.31 versus 6.03) and tended to have a lower post\uffe2\uff80\uff90prandial ammonia peak and higher acetate molar proportion (+5.1%) than CTL sheep. The rumen environment in AMM sheep favored the colonization and utilization of agro\uffe2\uff80\uff90industrial by\uffe2\uff80\uff90products (i.e. orange pulp) by the rumen microbes leading to a higher feed degradability. AMM sheep also had higher total tract apparent N digestibility (+21.7%) and urinary excretion of purine derivatives (+34%), suggesting a higher N uptake and microbial protein synthesis than CTL sheep.
CONCLUSIONThe inclusion of AMM in the diet of ruminants represents a valid strategy for maintaining rumen pH within a physiological range and improving N utilization by the rumen microbes, which could have positive effects on the health and productivity of animals in intensive production systems. These findings warrant further studies under conventional farm conditions. \uffc2\uffa9 2021 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
", "keywords": ["2. Zero hunger", "Rumen", "Sheep", "Bacteria", "Food Handling", "0402 animal and dairy science", "Hordeum", "04 agricultural and veterinary sciences", "Hydrogen-Ion Concentration", "Animal Feed", "Diet", "Gastrointestinal Microbiome", "Bacterial Proteins", "Ammonia", "Barley", "Rumen fermentation", "Animals", "Urea", "Ammoniation", "Digestion", "Feed utilization", "Research Articles"]}, "links": [{"href": "https://eprints.gla.ac.uk/235892/1/235892.pdf"}, {"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/jsfa.11205"}, {"href": "https://doi.org/10.1002/jsfa.11205"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20the%20Science%20of%20Food%20and%20Agriculture", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/jsfa.11205", "name": "item", "description": "10.1002/jsfa.11205", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/jsfa.11205"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-03-24T00:00:00Z"}}, {"id": "10.1002/ldr.3006", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:14:35Z", "type": "Journal Article", "created": "2018-05-12", "title": "Impacts of climate change adaptation options on soil functions: A review of European case-studies", "description": "AbstractSoils are vital for supporting food security and other ecosystem services. Climate change can affect soil functions both directly and indirectly. Direct effects include temperature, precipitation, and moisture regime changes. Indirect effects include those that are induced by adaptations such as irrigation, crop rotation changes, and tillage practices. Although extensive knowledge is available on the direct effects, an understanding of the indirect effects of agricultural adaptation options is less complete. A review of 20 agricultural adaptation case\uffe2\uff80\uff90studies across Europe was conducted to assess implications to soil threats and soil functions and the link to the Sustainable Development Goals (SDGs). The major findings are as follows: (a) adaptation options reflect local conditions; (b) reduced soil erosion threats and increased soil organic carbon are expected, although compaction may increase in some areas; (c) most adaptation options are anticipated to improve the soil functions of food and biomass production, soil organic carbon storage, and storing, filtering, transforming, and recycling capacities, whereas possible implications for soil biodiversity are largely unknown; and (d) the linkage between soil functions and the SDGs implies improvements to SDG 2 (achieving food security and promoting sustainable agriculture) and SDG 13 (taking action on climate change), whereas the relationship to SDG 15 (using terrestrial ecosystems sustainably) is largely unknown. The conclusion is drawn that agricultural adaptation options, even when focused on increasing yields, have the potential to outweigh the negative direct effects of climate change on soil degradation in many European regions.
", "keywords": ["sol", "[SDE.MCG]Environmental Sciences/Global Changes", "Sustainable Development Goals", "Sustainable development goals", "regional case studies", "adaptation", "Soil degradation", "01 natural sciences", "service \u00e9cosyst\u00e9mique", "630", "333", "soil", "12. Responsible consumption", "soil degradation", "Regional case-studies", "Agrucultural adaption", "DPSIR", "11. Sustainability", "regional case-studies", "Agricultural adaptation; DPSIR; Regional case-studies; Soil degradation; Sustainable Development Goals; Environmental Chemistry; Development3304 Education; 2300; Soil Science", "Climate change", "Research Articles", "0105 earth and related environmental sciences", "2. Zero hunger", "VDP::Landbruks- og Fiskerifag: 900", "agricultural adaptation", "15. Life on land", "6. Clean water", "services \u00e9cosyst\u00e9miques", "13. Climate action"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/ldr.3006"}, {"href": "https://doi.org/10.1002/ldr.3006"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Land%20Degradation%20%26amp%3B%20Development", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/ldr.3006", "name": "item", "description": "10.1002/ldr.3006", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/ldr.3006"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-05-30T00:00:00Z"}}, {"id": "10.1002/rcm.8478", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:14:37Z", "type": "Journal Article", "created": "2019-05-07", "title": "Determination of the triple oxygen and carbon isotopic composition of CO 2 from atomic ion fragments formed in the ion source of the 253 Ultra high\u2010resolution isotope ratio mass spectrometer", "description": "RationaleDetermination of \uffce\uffb417O values directly from CO2 with traditional gas source isotope ratio mass spectrometry is not possible due to isobaric interference of 13C16O16O on 12C17O16O. The methods developed so far use either chemical conversion or isotope equilibration to determine the \uffce\uffb417O value of CO2. In addition, \uffce\uffb413C measurements require correction for the interference from 12C17O16O on 13C16O16O since it is not possible to resolve the two isotopologues.
MethodsWe present a technique to determine the \uffce\uffb417O, \uffce\uffb418O and \uffce\uffb413C values of CO2 from the fragment ions that are formed upon electron ionization in the ion source of the Thermo Scientific 253 Ultra high\uffe2\uff80\uff90resolution isotope ratio mass spectrometer (hereafter 253 Ultra). The new technique is compared with the CO2\uffe2\uff80\uff90O2 exchange method and the 17O\uffe2\uff80\uff90correction algorithm for \uffce\uffb417O and \uffce\uffb413C values, respectively.
ResultsThe scale contractions for \uffce\uffb413C and \uffce\uffb418O values are slightly larger for fragment ion measurements than for molecular ion measurements. The \uffce\uffb417O and \uffce\uff9417O values of CO2 can be measured on the 17O+ fragment with an internal error that is a factor 1\uffe2\uff80\uff932 above the counting statistics limit. The ultimate precision depends on the signal intensity and on the total time that the 17O+ beam is monitored; a precision of 14\uffe2\uff80\uff89ppm (parts per million) (standard error of the mean) was achieved in 20\uffe2\uff80\uff89hours at the University of G\uffc3\uffb6ttingen. The \uffce\uff9417O measurements with the O\uffe2\uff80\uff90fragment method agree with the CO2\uffe2\uff80\uff90O2 exchange method over a range of \uffce\uff9417O values of \uffe2\uff88\uff920.3 to +0.7\uffe2\uff80\uffb0.
ConclusionsIsotope measurements on atom fragment ions of CO2 can be used as an alternative method to determine the carbon and oxygen isotopic composition of CO2 without chemical processing or corrections for mass interferences.
", "keywords": ["550", "NITROUS-OXIDE", "O-17/O-16", "ANALYTICAL SYSTEM", "01 natural sciences", "O-2", "0104 chemical sciences", "O-17 CORRECTION", "HIGH-PRECISION MEASUREMENTS", "13. Climate action", "Life Science", "ABUNDANCE", "DELTA-O-17", "EXCHANGE", "DIOXIDE", "Research Articles", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/rcm.8478"}, {"href": "https://doi.org/10.1002/rcm.8478"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Rapid%20Communications%20in%20Mass%20Spectrometry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/rcm.8478", "name": "item", "description": "10.1002/rcm.8478", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/rcm.8478"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-05T00:00:00Z"}}, {"id": "10.1029/2018JE005899", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:18:11Z", "type": "Journal Article", "created": "2020-03-09", "title": "Initiation and Flow Conditions of Contemporary Flows in Martian Gullies", "description": "<p>Understanding the initial and flow conditions of contemporary flows in Martian gullies, generally believed to be triggered and fluidized by CO<sub>2</sub> sublimation, is crucial for deciphering climate conditions needed to trigger and sustain them. We employ the RAMMS (RApid Mass Movement Simulation) debris flow and avalanche model to back-calculate initial and flow conditions of recent flows in three gullies in Hale crater. We infer minimum release depths of 1.0&#8211;1.5 m and initial release volumes of 100&#8211;200 m<sup>3</sup>. Entrainment leads to final flow volumes that are 2.5&#8211;5.5 times larger than initially released, and entrainment is found necessary to match the observed flow deposits. Simulated mean cross-channel flow velocities decrease from 3&#8211;4 m s<sup>-1</sup> to ~1 m s<sup>-1</sup> from release area to flow terminus, while flow depths generally decrease from 0.5&#8211;1 m to 0.1&#8211;0.2 m. The mean cross-channel erosion depth and deposition thicknesses are _0.1&#8211;0.3 m. Back-calculated dry-Coulomb friction ranges from 0.1 to 0.25 and viscous turbulent friction between 100&#8211;200 m s<sup>-2</sup>, which are values similar to those of granular debris flows on Earth. These results suggest that recent flows in gullies are fluidized to a similar degree as are granular debris flows on Earth. Using a novel model for mass-flow fluidization by CO<sub>2</sub> sublimation we are able to show that under Martian atmospheric conditions very small volumetric fractions of CO<sub>2</sub> of ~1% within mass flows may indeed yield sufficiently large gas fluxes to cause fluidization and enhance flow mobility.</p>
", "keywords": ["Atmospheric Science", "550", "[SDU.STU.GM] Sciences of the Universe [physics]/Earth Sciences/Geomorphology", "0211 other engineering and technologies", "Soil Science", "Mars", "Hale crater", "02 engineering and technology", "Aquatic Science", "carbon dioxide; gullies; Hale crater; Mars; modeling; RAMMS", "551", "Oceanography", "01 natural sciences", "[SDU.STU.PL]Sciences of the Universe [physics]/Earth Sciences/Planetology", "Geochemistry and Petrology", "Earth and Planetary Sciences (miscellaneous)", "SDG 13 - Climate Action", "Research Articles", "Water Science and Technology", "Earth-Surface Processes", "0105 earth and related environmental sciences", "Ecology", "Palaeontology", "carbon dioxide", "Forestry", "modeling", "RAMMS", "Geophysics", "Space and Planetary Science", "13. Climate action", "[SDU.STU.PL] Sciences of the Universe [physics]/Earth Sciences/Planetology", "gullies"]}, "links": [{"href": "http://dro.dur.ac.uk/28802/1/28802.pdf"}, {"href": "http://dro.dur.ac.uk/28802/2/28802.pdf"}, {"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018JE005899"}, {"href": "https://doi.org/10.1029/2018JE005899"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Planets", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2018JE005899", "name": "item", "description": "10.1029/2018JE005899", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2018JE005899"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-01T00:00:00Z"}}, {"id": "10.1029/2018gb005950", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:18:11Z", "type": "Journal Article", "created": "2018-10-12", "title": "Soil Organic Matter Persistence as a Stochastic Process: Age and Transit Time Distributions of Carbon in Soils", "description": "The question of why some types of organic matter are more persistent while others decompose quickly in soils has motivated a large amount of research in recent years. Persistence is commonly characterized as turnover or mean residence time of soil organic matter (SOM). However, turnover and residence times are ambiguous measures of persistence, because they could represent the concept of either age or transit time. To disambiguate these concepts and propose a metric to assess SOM persistence, we calculated age and transit time distributions for a wide range of soil organic carbon models. Furthermore, we show how age and transit time distributions can be obtained from a stochastic approach that takes a deterministic model of mass transfers among different pools and creates an equivalent stochastic model at the level of atoms. Using this approach we show the following: (1) Age distributions have relatively old mean values and long tails in relation to transit time distributions, suggesting that carbon stored in soils is on average much older than carbon in the release flux. (2) The difference between mean ages and mean transit times is large, with estimates of soil organic carbon persistence on the order of centuries or millennia when assessed using ages and on the order of decades when using transit or turnover times. (3) The age distribution is an appropriate metric to characterize persistence of SOM. An important implication of our analysis is that random chance is a factor that helps to explain why some organic matter persists for millennia in soil.
Ongoing permafrost thaw in the Arctic may remobilize large amounts of old organic matter. Upon transport to the Siberian shelf seas, this material may be degraded and released to the atmosphere, exported off\uffe2\uff80\uff90shelf, or buried in the sediments. While our understanding of the fate of permafrost\uffe2\uff80\uff90derived organic matter in shelf waters is improving, poor constraints remain regarding degradation in sediments. Here we use an extensive data set of organic carbon concentrations and isotopes (n\uffc2\uffa0=\uffc2\uffa0109) to inventory terrigenous organic carbon (terrOC) in surficial sediments of the Laptev and East Siberian Seas (LS\uffc2\uffa0+\uffc2\uffa0ESS). Of these ~2.7 Tg terrOC about 55% appear resistant to degradation on a millennial timescale. A first\uffe2\uff80\uff90order degradation rate constant of 1.5\uffc2\uffa0kyr\uffe2\uff88\uff921 is derived by combining a previously established relationship between water depth and cross\uffe2\uff80\uff90shelf sediment\uffe2\uff80\uff90terrOC transport time with mineral\uffe2\uff80\uff90associated terrOC loadings. This yields a terrOC degradation flux of ~1.7\uffc2\uffa0Gg/year from surficial sediments during cross\uffe2\uff80\uff90shelf transport, which is orders of magnitude lower than earlier estimates for degradation fluxes of dissolved and particulate terrOC in the water column of the LS\uffc2\uffa0+\uffc2\uffa0ESS. The difference is mainly due to the low degradation rate constant of sedimentary terrOC, likely caused by a combination of factors: (i) the lower availability of oxygen in the sediments compared to fully oxygenated waters, (ii) the stabilizing role of terrOC\uffe2\uff80\uff90mineral associations, and (iii) the higher proportion of material that is intrinsically recalcitrant due to its chemical/molecular structure in sediments. Sequestration of permafrost\uffe2\uff80\uff90released terrOC in shelf sediments may thereby attenuate the otherwise expected permafrost carbon\uffe2\uff80\uff90climate feedback.Climate warming is expected to destabilize permafrost carbon (PF\uffe2\uff80\uff90C) by thaw\uffe2\uff80\uff90erosion and deepening of the seasonally thawed active layer and thereby promote PF\uffe2\uff80\uff90C mineralization to CO2 and CH4. A similar PF\uffe2\uff80\uff90C remobilization might have contributed to the increase in atmospheric CO2 during deglacial warming after the last glacial maximum. Using carbon isotopes and terrestrial biomarkers (\uffce\uff9414C, \uffce\uffb413C, and lignin phenols), this study quantifies deposition of terrestrial carbon originating from permafrost in sediments from the Chukchi Sea (core SWERUS\uffe2\uff80\uff90L2\uffe2\uff80\uff904\uffe2\uff80\uff90PC1). The sediment core reconstructs remobilization of permafrost carbon during the late Aller\uffc3\uffb8d warm period starting at 13,000\uffc2\uffa0cal\uffc2\uffa0years before present (BP), the Younger Dryas, and the early Holocene warming until 11,000\uffc2\uffa0cal\uffc2\uffa0years BP and compares this period with the late Holocene, from 3,650\uffc2\uffa0years BP until present. Dual\uffe2\uff80\uff90carbon\uffe2\uff80\uff90isotope\uffe2\uff80\uff90based source apportionment demonstrates that Ice Complex Deposit\uffe2\uff80\uff94ice\uffe2\uff80\uff90 and carbon\uffe2\uff80\uff90rich permafrost from the late Pleistocene (also referred to as Yedoma)\uffe2\uff80\uff94was the dominant source of organic carbon (66\uffc2\uffa0\uffc2\uffb1\uffc2\uffa08%; mean\uffc2\uffa0\uffc2\uffb1\uffc2\uffa0standard deviation) to sediments during the end of the deglaciation, with fluxes more than twice as high (8.0\uffc2\uffa0\uffc2\uffb1\uffc2\uffa04.6\uffc2\uffa0g\uffc2\uffb7m\uffe2\uff88\uff922\uffc2\uffb7year\uffe2\uff88\uff921) as in the late Holocene (3.1\uffc2\uffa0\uffc2\uffb1\uffc2\uffa01.0\uffc2\uffa0g\uffc2\uffb7m\uffe2\uff88\uff922\uffc2\uffb7year\uffe2\uff88\uff921). These results are consistent with late deglacial PF\uffe2\uff80\uff90C remobilization observed in a Laptev Sea record, yet in contrast with PF\uffe2\uff80\uff90C sources, which at that location were dominated by active layer material from the Lena River watershed. Release of dormant PF\uffe2\uff80\uff90C from erosion of coastal permafrost during the end of the last deglaciation indicates vulnerability of Ice Complex Deposit in response to future warming and sea level changes.Tire particles (TPs) are a major source of microplastic on land, and considering their chemical composition, they represent a potential hazard for the terrestrial environment. We studied the effects of TPs at environmentally relevant concentrations along a wide concentration gradient (0\uffe2\uff80\uff93160 mg g\uffe2\uff88\uff921) and tested the effects on plant growth, soil pH and the key ecosystem process of litter decomposition and soil respiration. The addition of TPs negatively affected shoot and root growth already at low concentrations. Tea litter decomposition slightly increased with lower additions of TPs but decreased later on. Soil pH increased until a TP concentration of 80 mg g\uffe2\uff88\uff921 and leveled off afterwards. Soil respiration clearly increased with increasing concentration of added TPs. Plant growth was likely reduced with starting contamination and stopped when contamination reached a certain level in the soil. The presence of TPs altered a number of biogeochemical soil parameters that can have further effects on plant performance. Considering the quantities of yearly produced TPs, their persistence, and toxic potential, we assume that these particles will eventually have a significant impact on terrestrial ecosystems.
", "keywords": ["570", "Soil respiration ; Soil pH ; Litter decomposition ; Microplastic pollution ; Tire particles ; Soil Pollution", " Control", " and Remediation ; Research Article ; Plant growth", "Litter decomposition", "Soil respiration", "Soil pH", "500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie", "04 agricultural and veterinary sciences", "15. Life on land", "Microplastic pollution", "01 natural sciences", "6. Clean water", "13. Climate action", "Tire particles", "0401 agriculture", " forestry", " and fisheries", "Plant growth", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://link.springer.com/content/pdf/10.1007/s42832-021-0114-2.pdf"}, {"href": "https://doi.org/10.1007/s42832-021-0114-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Ecology%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s42832-021-0114-2", "name": "item", "description": "10.1007/s42832-021-0114-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s42832-021-0114-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-04-20T00:00:00Z"}}, {"id": "10.1029/2019jd030387", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:18:12Z", "type": "Journal Article", "created": "2019-06-19", "title": "Global 3-D Simulations of the Triple Oxygen Isotope Signature \u0394 17 O in Atmospheric CO 2", "description": "AbstractThe triple oxygen isotope signature \uffce\uff9417O in atmospheric CO2, also known as its \uffe2\uff80\uff9c17O excess,\uffe2\uff80\uff9d has been proposed as a tracer for gross primary production (the gross uptake of CO2 by vegetation through photosynthesis). We present the first global 3\uffe2\uff80\uff90D model simulations for \uffce\uff9417O in atmospheric CO2 together with a detailed model description and sensitivity analyses. In our 3\uffe2\uff80\uff90D model framework we include the stratospheric source of \uffce\uff9417O in CO2 and the surface sinks from vegetation, soils, ocean, biomass burning, and fossil fuel combustion. The effect of oxidation of atmospheric CO on \uffce\uff9417O in CO2 is also included in our model. We estimate that the global mean \uffce\uff9417O (defined as with \uffce\uffbbRL = 0.5229) of CO2 in the lowest 500\uffc2\uffa0m of the atmosphere is 39.6\uffc2\uffa0per meg, which is \uffe2\uff88\uffbc20\uffc2\uffa0per meg lower than estimates from existing box models. We compare our model results with a measured stratospheric \uffce\uff9417O in CO2 profile from Sodankyl\uffc3\uffa4 (Finland), which shows good agreement. In addition, we compare our model results with tropospheric measurements of \uffce\uff9417O in CO2 from G\uffc3\uffb6ttingen (Germany) and Taipei (Taiwan), which shows some agreement but we also find substantial discrepancies that are subsequently discussed. Finally, we show model results for Zotino (Russia), Mauna Loa (United States), Manaus (Brazil), and South Pole, which we propose as possible locations for future measurements of \uffce\uff9417O in tropospheric CO2 that can help to further increase our understanding of the global budget of \uffce\uff9417O in atmospheric CO2.
", "keywords": ["CARBONIC-ANHYDRASE ACTIVITY", "550", "STRATOSPHERIC CO2", "STOMATAL CONDUCTANCE", "TRACER", "stable isotopes", "MASS", "carbon dioxide (CO)", "01 natural sciences", "7. Clean energy", "DIOXIDE EXCHANGE", "O excess (\u0394O)", "3-DIMENSIONAL SYNTHESIS", "carbon dioxide (CO2)", "carbon cycle", "O-17 excess (Delta O-17)", "SDG 13 - Climate Action", "SDG 14 - Life Below Water", "Research Articles", "0105 earth and related environmental sciences", "O-18 CONTENT", "info:eu-repo/classification/ddc/550", "mass-independent fractionation (MIF)", "ddc:550", "gross primary production (GPP)", "15. Life on land", "Earth sciences", "13. Climate action", "MODEL TM5", "17O excess (\u039417O)", "FIRE EMISSIONS"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2019JD030387"}, {"href": "https://doi.org/10.1029/2019jd030387"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Atmospheres", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2019jd030387", "name": "item", "description": "10.1029/2019jd030387", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2019jd030387"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-04T00:00:00Z"}}, {"id": "10.1029/2019jg005511", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:18:12Z", "type": "Journal Article", "created": "2020-01-29", "title": "Particulate Organic Matter Dynamics in a Permafrost Headwater Stream and the Kolyma River Mainstem", "description": "AbstractOngoing rapid arctic warming leads to extensive permafrost thaw, which in turn increases the hydrologic connectivity of the landscape by opening up subsurface flow paths. Suspended particulate organic matter (POM) has proven useful to trace permafrost thaw signals in arctic rivers, which may experience higher organic matter loads in the future due to expansion and increasing intensity of thaw processes such as thermokarst and river bank erosion. Here we focus on the Kolyma River watershed in Northeast Siberia, the world's largest watershed entirely underlain by continuous permafrost. To evaluate and characterize the present\uffe2\uff80\uff90day fluvial release of POM from permafrost thaw, we collected water samples every 4\uffe2\uff80\uff937 days during the 4\uffe2\uff80\uff90month open water season in 2013 and 2015 from the lower Kolyma River mainstem and from a small nearby headwater stream (Y3) draining an area completely underlain by Yedoma permafrost (Pleistocene ice\uffe2\uff80\uff90 and organic\uffe2\uff80\uff90rich deposits). Concentrations of particulate organic carbon generally followed the hydrograph with the highest concentrations during the spring flood in late May/early June. For the Kolyma River, concentrations of dissolved organic carbon showed a similar behavior, in contrast to the headwater stream, where dissolved organic carbon values were generally higher and particulate organic carbon concentrations lower than for Kolyma. Carbon isotope analysis (\uffce\uffb413C, \uffce\uff9414C) suggested Kolyma\uffe2\uff80\uff90POM to stem from both contemporary and older permafrost sources, while Y3\uffe2\uff80\uff90POM was more strongly influenced by in\uffe2\uff80\uff90stream production and recent vegetation. Lipid biomarker concentrations (high\uffe2\uff80\uff90molecular\uffe2\uff80\uff90weight n\uffe2\uff80\uff90alkanoic acids and n\uffe2\uff80\uff90alkanes) did not display clear seasonal patterns, yet implied Y3\uffe2\uff80\uff90POM to be more degraded than Kolyma\uffe2\uff80\uff90POM.Investigating active participants in the fixation of dinitrogen gas is vital as N is often a limiting factor for primary production. Biological nitrogen fixation is performed by a diverse guild of bacteria and archaea (diazotrophs), which can be free\uffe2\uff80\uff90living or symbionts. Free\uffe2\uff80\uff90living diazotrophs are widely distributed in the environment, yet our knowledge about their identity and ecophysiology is still limited. A major challenge in investigating this guild is inferring activity from genetic data as this process is highly regulated. To address this challenge, we evaluated and improved several 15N\uffe2\uff80\uff90based methods for detecting N2 fixation activity (with a focus on soil samples) and studying active diazotrophs. We compared the acetylene reduction assay and the 15N2 tracer method and demonstrated that the latter is more sensitive in samples with low activity. Additionally, tracing 15N into microbial RNA provides much higher sensitivity compared to bulk soil analysis. Active soil diazotrophs were identified with a 15N\uffe2\uff80\uff90RNA\uffe2\uff80\uff90SIP approach optimized for environmental samples and benchmarked to 15N\uffe2\uff80\uff90DNA\uffe2\uff80\uff90SIP. Lastly, we investigated the feasibility of using SIP\uffe2\uff80\uff90Raman microspectroscopy for detecting 15N\uffe2\uff80\uff90labelled cells. Taken together, these tools allow identifying and investigating active free\uffe2\uff80\uff90living diazotrophs in a highly sensitive manner in diverse environments, from bulk to the single\uffe2\uff80\uff90cell level.
", "keywords": ["Spectrum Analysis", " Raman", "BIOLOGICAL SOIL CRUSTS", "106005 Bioinformatik", "106023 Molekularbiologie", "Nitrogen Fixation", "REVEALS", "FLUORESCENCE", "Research Articles", "Soil Microbiology", "106022 Mikrobiologie", "SPECTROSCOPY", "Bacteria", "Nitrogen Isotopes", "106003 Biodiversity research", "106023 Molecular biology", "GENETIC-REGULATION", "Archaea", "6. Clean water", "SURFACE-ENHANCED RAMAN", "COMMUNITY", "106003 Biodiversit\u00e4tsforschung", "13. Climate action", "Isotope Labeling", "106022 Microbiology", "NITROGEN-FIXATION", "106005 Bioinformatics", "RIBOSOMAL-RNA", "N-2 FIXATION"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.13954"}, {"href": "https://doi.org/10.1111/1462-2920.13954"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Microbiology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/1462-2920.13954", "name": "item", "description": "10.1111/1462-2920.13954", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/1462-2920.13954"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-12-15T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2019.03.190", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-05-30T16:16:22Z", "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.biortech.2020.124095", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:16:16Z", "type": "Journal Article", "created": "2020-09-07", "title": "Biosynthesized iron sulfide nanoparticles by mixed consortia for enhanced extracellular electron transfer in a microbial fuel cell", "description": "The bioanode of mixed consortia was for the first time used to in-situ synthesize iron sulfide nanoparticles in a microbial fuel cell (MFC) over a long-term period (46\u00a0days). These poorly crystalline nanoparticles with an average size of 29.97\u00a0\u00b1\u00a07.1\u00a0nm, comprising of FeS and FeS2, significantly promoted extracellular electron transfer and thus the electricity generation of the MFC. A maximum power density of 519.00\u00a0mW/m2 was obtained from the MFC, which was 1.92 times as high as that of the control. The cell viability was promoted by a small amount of iron sulfide nanoparticles but inhibited by the thick nanoparticle 'shell' covered on the bacterial cells. Some electroactive and sulfur reducing bacteria (eg. Enterobacteriaceae, Desulfovibrio, and Geobacter) were specifically enriched on the anode. This study provides a novel insight for improving the performance of bioelectrochemical systems through in-situ sustainable nanomaterials biofabrication by mixed consortia.", "keywords": ["Electron Transport", "Electricity", "Bioelectric Energy Sources", "Nanoparticles", "Electrons", "Ferrous Compounds", "Electrodes", "7. Clean energy", "01 natural sciences", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Cui, Yan, Chen, Xueru, Pan, Zhengyong, Wang, Yuqi, Xu, Qiang, Bai, Jiaying, Jia, Honghua, Zhou, Jun, Yong, Xiaoyu, Wu, Xiayuan,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.biortech.2020.124095"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioresource%20Technology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biortech.2020.124095", "name": "item", "description": "10.1016/j.biortech.2020.124095", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biortech.2020.124095"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-12-01T00:00:00Z"}}, {"id": "10.1016/j.colsurfa.2018.05.091", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:16:22Z", "type": "Journal Article", "created": "2018-05-30", "title": "Protein affinity for TiO2 and CeO2 manufactured nanoparticles. From ultra-pure water to biological media", "description": "Abstract In this study, we investigated the Bovine Serum Albumin (BSA) protein affinity for manufactured metal oxide nanoparticles (NPs), respectively TiO2 and CeO2. Changes in the NPs surface charge property and resulting stability were investigated by considering pH-dependent electrostatic scenarios and contrasting solution conditions from ultra-pure water to more complex biological mixtures regarding the ionic and protein composition. After careful characterization of NPs and BSA as a function of pH, we used variable BSA concentrations to study the impact of BSA adsorption and we found that protein affinity for NPs was largely controlled by electrostatic interactions. We demonstrated that in ultra-pure water increasing gradually the BSA concentration results in aggregation when BSA and NPs charges are opposite (charge neutralization). On the other hand, when NPs were added in a solution containing BSA, aggregation was prevented due to corona formation. Then, the ultrapure water was replaced by Dulbecco\u2019s phosphate-buffered saline (DPBS) to mimic the blood composition and ionic strength. BSA was then replaced by fetal calf serum (FCS) to mimic the great variety of proteins and other biomolecules found in the blood. Our findings indicate that, in all cases, initially dispersed TiO2 or CeO2 NPs are stabilized by the presence of proteins and that protein adsorption is fast regarding NPs homoaggregation. Proteins are found to improve NPs dispersion even at high ionic strength with overarching consequences on the fate, transport and related risk of NPs in living systems.", "keywords": ["Aggregation", "info:eu-repo/classification/ddc/550", "TiO2 and CeO2", "ddc:550", "0211 other engineering and technologies", "Nanoparticles", "Protein adsorption", "02 engineering and technology", "01 natural sciences", "Protein affinity", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.colsurfa.2018.05.091"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Colloids%20and%20Surfaces%20A%3A%20Physicochemical%20and%20Engineering%20Aspects", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.colsurfa.2018.05.091", "name": "item", "description": "10.1016/j.colsurfa.2018.05.091", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.colsurfa.2018.05.091"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-09-01T00:00:00Z"}}, {"id": "10.1016/j.cosust.2018.11.002", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:16:23Z", "type": "Journal Article", "created": "2018-11-28", "title": "Models for assessing engineered nanomaterial fate and behaviour in the aquatic environment", "description": "Engineered nanomaterials (ENMs, material containingMost water and nutrients essential for plant growth travel across a thin zone of soil at the interface between roots and soil, termed the rhizosphere. Chemicals exuded by plant roots can alter the fluid properties, such as viscosity, of the water phase, potentially with impacts on plant productivity and stress tolerance. In this paper, we study the effects of plant exudates on the macroscale properties of water movement in soil. Our starting point is a microscale description of two fluid flow and exudate diffusion in a periodic geometry composed from a regular repetition of a unit cell. Using multiscale homogenization theory, we derive a coupled set of equations that describe the movement of air and water, and the diffusion of plant exudates on the macroscale. These equations are parametrized by a set of cell problems that capture the flow behaviour. The mathematical steps are validated by comparing the resulting homogenized equations to the original pore scale equations, and we show that the difference between the two models is \uffe2\uff89\uffb27% for eight cells. The resulting equations provide a computationally efficient method to study plant\uffe2\uff80\uff93soil interactions. This will increase our ability to predict how contrasting root exudation patterns may influence crop uptake of water and nutrients.
", "keywords": ["Richards\u2019 equation", "General Mathematics", "Porous media", "General Physics and Astronomy", "630", "646809DIMR", "QD", "BB/L025620/1", "/dk/atira/pure/subjectarea/asjc/2600/2600", "name=General Engineering", "BB/J00868/1", "NE/L00237/1", "/dk/atira/pure/subjectarea/asjc/2200/2200", "Research Articles", "Homogenization", "Natural Environment Research Council (NERC)", "General Engineering", "04 agricultural and veterinary sciences", "15. Life on land", "QD Chemistry", "name=General Mathematics", "EP/P020887/1", "Engineering and Physical Sciences Research Council (EPSRC)", "name=General Physics and Astronomy", "13. Climate action", "Biotechnology and Biological Sciences Research Council (BBSRC)", "0401 agriculture", " forestry", " and fisheries", "/dk/atira/pure/subjectarea/asjc/3100/3100", "BB/P004180/1", "European Research Council"]}, "links": [{"href": "https://eprints.soton.ac.uk/423010/1/Paper_Final.pdf"}, {"href": "https://royalsocietypublishing.org/doi/pdf/10.1098/rspa.2018.0149"}, {"href": "https://doi.org/10.1098/rspa.2018.0149"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20Royal%20Society%20A%3A%20Mathematical%2C%20Physical%20and%20Engineering%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1098/rspa.2018.0149", "name": "item", "description": "10.1098/rspa.2018.0149", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1098/rspa.2018.0149"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-09-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2024.125193", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:16:37Z", "type": "Journal Article", "created": "2024-10-24", "title": "Effect of particle size on the transport of polystyrene micro- and nanoplastic particles through quartz sand under unsaturated conditions", "description": "Micro- and nanoplastics (MNPs) are contaminants of emerging concern recently found in soil ecosystems. Their presence in terrestrial environments and their migration to aquatic environments may become a risk for the health of ecosystems and, through them, of humans. Understanding the interaction between particle properties and physicochemical and hydrodynamic factors is crucial to evaluate their fate and their potential infiltration towards groundwater. This study investigates the impact of particle size on MNPs transport through sand under unsaturated conditions. Infiltration column experiments with polystyrene MNPs ranging from 120 to 10,000\u00a0nm were conducted and supported by numerical modelling to derive reactive transport parameters. Results show a significant effect of particle size on the transport of MNPs, with higher recovery values observed for smaller particles (120\u00a0nm; 95.11%) compared to larger particles (1000\u00a0nm; 71.44%). No breakthrough was observed for 10,000\u00a0nm particles, indicating a complete retention within the quartz sand matrix. DLVO theory confirmed the dominance of electrostatic repulsive forces between MNPs and sand grains, suggesting an unfavourable environment for MNPs to adhere to quartz sand. Consequently, particle retention in the sand matrix occurs predominantly by physical processes. Equilibrium sorption modelling reveals that larger particles (1000\u00a0nm) tend to be immobilized in small pores throats due to straining, resulting in lower recoveries. When they are not trapped, particles tend to travel faster through preferential flows due to a size exclusion effect, evidenced by shorter arrival times at the column outlet compared to tracers. These findings highlight the influence of particle size on the transport and retention of MNPs in quartz sand under unsaturated conditions and contribute to a better understanding of their transport dynamics and environmental fate.", "keywords": ["Microplastics", "Q Science (General)", "Quartz", "particle size", "QS Ecology", "nanoplastics", "modelling", "Sand", "Polystyrenes", "Nanoparticles", "Soil Pollutants", "Particle Size", "Plastics", "Groundwater"], "contacts": [{"organization": "Rieckhof, Cynthia, Mart\u00ednez-Hern\u00e1ndez, Virtudes, Holzbecher, Ekkehard, Meffe, Raffaella,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2024.125193"}, {"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.2024.125193", "name": "item", "description": "10.1016/j.envpol.2024.125193", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2024.125193"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-01-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2016.08.044", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:16:36Z", "type": "Journal Article", "created": "2016-08-31", "title": "The role of PVP in the bioavailability of Ag from the PVP-stabilized Ag nanoparticle suspension", "description": "We assessed the bioavailability of Ag from Ag nanoparticles (NPs), stabilized with polyvinylpyrrolidone (PVP), to terrestrial isopods which were exposed to 10, 100 and 1000\u00a0\u03bcg Ag NPs/g of dry food. Different Ag species were determined in the NP suspension that was fed to isopods: (i) total Ag by atomic absorption spectroscopy, (ii) the sum of Ag-PVP complexes and free Ag+ by anodic stripping voltammetry at the bismuth-film electrode, and (iii) free Ag+ by ion-selective potentiometry. The amounts of Ag species in the consumed food were compared to the masses of Ag accumulated in the isopod digestive glands. Our results show that all three Ag species (Ag NPs, Ag-PVP complexes and free Ag+) could be the source of bioaccumulated Ag, but to various degrees depending on the exposure concentration and transformations in the digestive system. We provide a proof that (i) Ag NPs dissolve and Ag-PVP complexes dissociate in the isopod digestive tract; (ii) the concentration of free Ag+ in the suspension offered to the test organisms is not the only measure of bioavailable Ag. The type of NP stabilizer along with the NP transformations in the digestive system needs to be considered in the creation of new computational models of the nanomaterial fate.", "keywords": ["voltammetry", "Ag ions", "Silver", "Biological Availability", "Metal Nanoparticles", "Povidone", "ion-selective electrode", "02 engineering and technology", "Ag complexes", "01 natural sciences", "Gastrointestinal Tract", "terrestrial isopod", "Suspensions", "Animals", "info:eu-repo/classification/udc/620.3", "0210 nano-technology", "Isopoda", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2016.08.044"}, {"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.2016.08.044", "name": "item", "description": "10.1016/j.envpol.2016.08.044", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2016.08.044"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-11-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2017.12.015", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:16:36Z", "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": "10.1016/j.envpol.2019.05.106", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:16:36Z", "type": "Journal Article", "created": "2019-05-21", "title": "Bioturbation of Ag2S-NPs in soil columns by earthworms", "description": "Sewage sludge contains Ag2S-NPs causing NP exposure of soil fauna when sludge is applied as soil amendment. Earthworm bioturbation is an important process affecting many soil functions. Bioturbation may be affected by the presence of Ag2S-NPs, but the earthworm activity itself may also influence the displacement of these NPs that otherwise show little transport in the soil. The aim of this study was to determine effects of Ag2S-NPs on earthworm bioturbation and effect of this bioturbation on the vertical distribution of Ag2S-NPs. Columns (12\u202fcm) of a sandy loamy soil with and without Lumbricus rubellus were prepared with and without 10\u202fmg Ag kg-1, applied as Ag2S-NPs in the top 2\u202fcm of the soil, while artificial rainwater was applied at \u223c1.2\u202fmm day-1. The soil columns were sampled at three depths weekly for 28 days and leachate collected from the bottom. Total Ag measurements showed more displacement of Ag to deeper soil layers in the columns with earthworms. The application of rain only did not significantly affect Ag transport in the soil. No Ag was detected in column leachates. X-ray tomography showed that changes in macro porosity and pore size distribution as a result of bioturbation were not different between columns with and without Ag2S-NPs. Earthworm activity was therefore not affected by Ag2S-NPs at the used exposure concentration. Ag concentrations along the columns and the earthworm density allowed the calculation of the bioturbation rate. The effect on the Ag transport in the soil shows that earthworm burrowing activity is a relevant process that must be taken into account when studying the fate of nanoparticles in soils.", "keywords": ["Silver", "Sewage", "Tomography", " X-Ray", "Transport", "Metal Nanoparticles", "earthworms", "15. Life on land", "01 natural sciences", "6. Clean water", "soil", "Soil", "13. Climate action", "bioturbation", "transport", "Earthworms", "Nanoparticles", "Animals", "Soil Pollutants", "nanoparticles", "Bioturbation", "Oligochaeta", "SDG 6 - Clean Water and Sanitation", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2019.05.106"}, {"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.2019.05.106", "name": "item", "description": "10.1016/j.envpol.2019.05.106", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2019.05.106"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-09-01T00:00:00Z"}}, {"id": "10.1016/j.foreco.2016.07.038", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:16:49Z", "type": "Journal Article", "created": "2016-08-27", "title": "Forest Conversion Impacts On The Fine And Coarse Root System, And Soil Organic Matter In Tropical Lowlands Of Sumatera (Indonesia)", "description": "Abstract Deforestation and land-use change are occurring on an increasing scale throughout Indonesia with profound effects on ecosystem structure and functions marked by consequences in biogeochemical cycles. This study investigates the influence of forest conversion on soil organic matter as well as the fine and coarse root system. Furthermore, the relationships between carbon (C) and nitrogen (N) stocks in the root biomass were related to the total aboveground tree biomass. Root biomass and fine root morphology were investigated in 150\u00a0cm-deep soil pits along a gradient of increasing land-use intensity, i.e. in natural forest, rubber under a natural forest cover (\u2018jungle rubber\u2019), rubber and oil palm monocultures. Total root biomass generally decreased with increasing land-use intensity together with aboveground tree biomass. Subsequently, carbon and nutrient stocks in the root system were over 50% lower in the monoculture plantations compared to the natural forest. Vertical root distribution showed distinct different patterns across the land-use types with a pronounced logarithmic decrease in vertical total root abundance in the natural forest and the jungle rubber plots that was less distinctive in the plantation systems. However, fine root morphology in the jungle rubber system revealed a large specific root area and specific root tip abundance, therefore partly compensating for the reduction in the fine root system after forest conversion. Soil organic matter was particularly low in rubber plantations. In conclusion, the results of our study suggests that conversion of natural forest to agroforestry and monoculture systems has a profound belowground impact reflected in the decrease of root biomass, nutrient stocks in coarse roots, and total soil organic matter.", "keywords": ["2. Zero hunger", "sfb990_journalarticles", "sfb990_abs", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2016.07.038"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Forest%20Ecology%20and%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.foreco.2016.07.038", "name": "item", "description": "10.1016/j.foreco.2016.07.038", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2016.07.038"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-11-01T00:00:00Z"}}, {"id": "10.1016/j.heliyon.2024.e41151", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:16:59Z", "type": "Journal Article", "created": "2024-12-14", "title": "Chlorotoxin-functionalized mesoporous silica nanoparticles for pH-responsive paclitaxel delivery to Glioblastoma multiforme", "description": "Glioblastoma multiforme (GBM) is a highly aggressive brain cancer associated with poor survival rates. We developed novel mesoporous silica nanoparticles (MSNs)-based nanocarriers for pH-responsive delivery of a therapeutic drug Paclitaxel (PTX) to GBM tumor cells. The pores of MSNs are loaded with PTX, which is retained by \u03b2-cyclodextrin (CD) moieties covalently linked to the pore entrances through a hydrazone linkage, which is cleavable in weakly acidic environment. Furthermore, we utilized a host-guest interaction between the adamantane and capping CD moieties to further functionalize the surface with a potential glioma-targeting oligopeptide chlorotoxin (CHX). In vitro studies in the U87 GBM cell line show decreased uptake, but increased toxicity of CHX-modified nanoparticles compared to CHX-free nanoparticles. The obtained results are promising toward development of advanced drug nanocarriers, which may target the overexpressed receptors in cancer tissues and utilize their weakly acidic environment for triggering the drug release, potentially leading to more efficient cancer treatments.", "keywords": ["Social sciences (General)", "H1-99", "Targeted drug delivery", "Q1-390", "Science (General)", "Paclitaxel", "Mesoporous silica nanoparticles", "Cyclodextrin", "Glioblastoma multiforme", "pH-responsive", "Research Article"]}, "links": [{"href": "https://doi.org/10.1016/j.heliyon.2024.e41151"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Heliyon", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.heliyon.2024.e41151", "name": "item", "description": "10.1016/j.heliyon.2024.e41151", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.heliyon.2024.e41151"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2025-01-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2016.08.204", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:17:19Z", "type": "Journal Article", "created": "2016-09-08", "title": "Bioaccumulation of silver in Daphnia magna: Waterborne and dietary exposure to nanoparticles and dissolved silver", "description": "Silver nanoparticles (Ag-NP) are incorporated into commercial products as antimicrobial agents, which potentiate their emission to the environment. The toxicity of Ag-NP has been associated with the release of Ag ions (Ag+), which are more toxic to aquatic organisms than Ag-NP. In this study, a toxicokinetics approach was applied to compare the potential of Daphnia magna to accumulate Ag from either Ag-NP or AgNO3 through different exposure routes: a) water, b) diet and c) water and diet. A one-compartment kinetics model was applied to describe the development of Ag body concentrations over time and derive uptake (k1w; k1d) and elimination (k2) rate constants. Under water-only exposure, AgNO3 induced higher Ag uptake rate constants and bioconcentration factors when compared to Ag-NP. For dietary exposure, no differences in Ag concentrations in D. magna, along with the kinetics parameters, were found for both Ag forms. Simultaneous water and dietary exposures to Ag-NP induced higher Ag concentrations in D. magna compared to AgNO3. In this combined exposure, uptake from water explains most for the increase in Ag body concentration in D. magna for Ag-NP exposure, whereas uptake from the diet was the major contributor for the increase in Ag concentration in D. magna under AgNO3 exposure. Biomagnification was not observed for any of the exposure routes applied in this study, neither for Ag-NP nor for AgNO3.", "keywords": ["Dietary Exposure", "Silver", "Daphnia", "13. Climate action", "0211 other engineering and technologies", "Animals", "Metal Nanoparticles", "Silver Nitrate", "02 engineering and technology", "SDG 6 - Clean Water and Sanitation", "01 natural sciences", "Water Pollutants", " Chemical", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2016.08.204"}, {"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.2016.08.204", "name": "item", "description": "10.1016/j.scitotenv.2016.08.204", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2016.08.204"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-01-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2018.08.176", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:17:19Z", "type": "Journal Article", "created": "2018-08-15", "title": "Heteroaggregation of CeO2 nanoparticles in presence of alginate and iron (III) oxide", "description": "When manufactured nanoparticles are released to natural waters, heteroaggregation between nanoparticles and water compounds is expected to occur and play a key role in nanoparticle fate, transport and transformation. In this work, the heteroaggregation between CeO2 nanoparticles and Fe2O3 inorganic colloids, which represent the main inorganic fraction from Lake Geneva water, is studied. The heteroaggregation processes between CeO2, Fe2O3 and alginate in multiple water samples are investigated using zeta potential and z-average diameter measurements. The kinetics of heteroaggregation of individual components as well as mixtures of CeO2 nanoparticles and Fe2O3 colloids and alginate are studied using time resolved dynamic light scattering. The global attachment efficiency (\u03b1global) is calculated using data from kinetic experiments. \u03b1global for pristine CeO2 nanoparticles varied from 0.5 to 0.7 in lake and synthetic waters and is found around 1 for pristine Fe2O3 and mixture CeO2 and Fe2O3. Our findings demonstrate that heteroaggregation is highly dependent on environmental conditions and resulting electrostatic scenarios. No heteroaggregation at pH\u202f8 between CeO2, Fe2O3 and alginate is observed in ultrapure water, because of electrostatic repulsions between negatively charged compounds. In synthetic and lake waters, the situation is opposite. Indeed, specific adsorption of divalent cations and presence of salt are found to promote heteroaggregation via cation bridging and screening effects. The kinetic experiments indicate that aggregation rate of pristine Fe2O3 is higher (89\u202fnm/min in lake water) compared to pristine CeO2 nanoparticles (50\u202fnm/min) and on the same level as mixture of CeO2 and Fe2O3 (96\u202fnm/min). Low alginate concentration, 0.25\u202fmg/L, has no effect on heteroaggregation in mixture of CeO2 and Fe2O3 in lake and synthetic waters. On the other hand, in natural water, the presence of higher alginate concentration, 2\u202fmg/L, is found to reduce the heteroaggregation rate.", "keywords": ["info:eu-repo/classification/ddc/550", "13. Climate action", "Alginate", "ddc:550", "CeO2 nanoparticles", "Fe2O3", "Heteroaggregation", "Cation adsorption", "01 natural sciences", "6. Clean water", "Lake water", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2018.08.176"}, {"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.2018.08.176", "name": "item", "description": "10.1016/j.scitotenv.2018.08.176", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2018.08.176"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-01-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2018.09.017", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:17:19Z", "type": "Journal Article", "created": "2018-09-04", "title": "Determination of nanoparticle heteroaggregation attachment efficiencies and rates in presence of natural organic matter monomers. Monte Carlo modelling", "description": "Understanding the transformation and transport of manufactured nanoparticles (NPs) in aquatic systems remains an important issue due to their potential hazard. Once released in aquatic systems, NPs will interact with natural compounds such as suspended inorganic particles and/or natural organic matter (NOM) and heteroaggregation will control their ultimate fate. Unfortunately, systematic experimental methods to study heteroaggregation are not straightforward and still scarce. In addition, the description of heteroaggregation rate constants and attachment efficiencies is still a matter of debate since no clear definition exists. In this work, an original cluster-cluster Monte Carlo model is developed to get an insight into heteroaggregation process descriptions. A two-component system composed of NPs and NOM fulvic acid monomers is investigated by considering several water models to cover a range of (relevant) conditions from fresh to marine waters. For that purpose, homo- and hetero- individual attachment efficiencies between NPs and NOM units are adjusted (NP-NP, NOM-NOM and NP-NOM). The influence of NP/NOM ratio, NOM-NOM homoaggregation versus heteroaggregation, and surface coating effects is studied systematically. From a quantitative point of view, aggregation rate constants as well as attachment efficiencies are calculated as a function of physical time so as to characterize the individual influence of each parameter and to allow future comparison with experimental data. Heteroaggregation processes and global attachment efficiencies corresponding to several mechanisms and depending on the evolution of heteroaggregate structures all along the simulations are defined. The calculation of attachment efficiency values is found dependent on NP/NOM concentration ratios via coating effects, by the initial set of elementary attachment efficiencies and influence of homoaggregation. Marine water represents a specific case of aggregation where all particle contacts are effective. On the other hand, in 'ultrapure' and 'fresh waters', a competition between homo- and heteroaggregation occurs depending on the initial attachment efficiencies therefore indicating that a subtle change in the NP surface properties as well as in the water chemistry have a significant impact on heteroaggregation processes.", "keywords": ["SDG 14 \u2013 Leben unter Wasser", "FATE", "0211 other engineering and technologies", "02 engineering and technology", "SILVER NANOPARTICLES", "01 natural sciences", "Nanoparticle", "ddc:550", "105906 Environmental geosciences", "SDG 14 - Life Below Water", "Monte Carlo simulation", "OXIDE NANOPARTICLES", "0105 earth and related environmental sciences", "ddc:333.7-333.9", "Natural organic matter", "NANOMATERIALS", "info:eu-repo/classification/ddc/333.7-333.9", "info:eu-repo/classification/ddc/550", "Surface coating", "ENGINEERED NANOPARTICLES", "Attachment efficiency", "Nanopartide", "TITANIUM-DIOXIDE NANOPARTICLES", "TRANSPORT", "AQUATIC ENVIRONMENT", "TIO2 NANOPARTICLES", "Natural Organic Matter", "13. Climate action", "Heteroaggregation", "105906 Umweltgeowissenschaften", "DIFFUSION-LIMITED AGGREGATION"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2018.09.017"}, {"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.2018.09.017", "name": "item", "description": "10.1016/j.scitotenv.2018.09.017", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2018.09.017"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2018.09.146", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:17:19Z", "type": "Journal Article", "created": "2018-09-11", "title": "Simultaneous stabilization of Pb and improvement of soil strength using nZVI", "description": "This study demonstrates the feasibility of nanoscale Zero-Valent Iron (nZVI) for simultaneous stabilization of Pb and improvement of soil strength via batch experiments. The soil samples were prepared using slurry and pre-consolidation method at nZVI doses of 0.2%, 1%, 5%, and 10% (by dry weight). The physicochemical and geotechnical properties of Pb-contaminated soil treated by nZVI were analyzed. The results indicate that the contamination of Pb(II) resulted in a notable reduction in the undrained shear strength of soil from 16.85\u202fkPa to 7.25\u202fkPa. As expected, the Pb in exchangeable and carbonate-bound fractions decreased significantly with the increasing doses of nZVI. Meanwhile, the undrained shear strength of Pb-contaminated soil enhanced substantially as the increase of nZVI, from 25.83\u202fkPa (0.2% nZVI treatment) to 69.33\u202fkPa (10% nZVI treatment). An abundance of bubbles, generated from the oxidation of nZVI, was recorded. The mechanisms for simultaneous stabilization of Pb and soil improvement primarily include: 1) the precipitation and transformation of Pb-/Fe-hydrated oxides on the soil particles and their induced bounding effects; 2) the increased drainage capability of soil as the occupation of nZVI aggregates and bubbles in the macropores space and 3) the lower soil density derived from the increase in microbubbles retained in the soil. This study is provided to facilitate the application of nZVI in the redevelopment of contaminated soil.", "keywords": ["Soil", "Lead", "Iron", "0211 other engineering and technologies", "Metal Nanoparticles", "Soil Pollutants", "02 engineering and technology", "TD", "01 natural sciences", "Environmental Restoration and Remediation", "6. Clean water", "0105 earth and related environmental sciences"]}, "links": [{"href": "http://wrap.warwick.ac.uk/108516/1/WRAP-simultaneous-stabiliazation-Pb-improvement-soil-strength-Geng-2018.pdf"}, {"href": "https://doi.org/10.1016/j.scitotenv.2018.09.146"}, {"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.2018.09.146", "name": "item", "description": "10.1016/j.scitotenv.2018.09.146", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2018.09.146"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2023.164311", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-05-30T16:17:22Z", "type": "Journal Article", "created": "2023-05-20", "title": "Electroactive microorganisms synthesizing iron sulfide nanoparticles for enhanced hexavalent chromium removal in microbial fuel cells", "description": "Microbial fuel cells (MFCs) have been considered a promising technology for Cr6+ removal, but they are limited by Cr6+-reducing biocathodes with low extracellular electron transfer (EET) and poor microbial activity. In this study, three kinds of nano-FeS hybridized electrode biofilms, obtained through synchronous biosynthesis (Sy-FeS), sequential biosynthesis (Se-FeS) and cathode biosynthesis (Ca-FeS), were applied as biocathodes for Cr6+ removal in MFCs. The Ca-FeS biocathode exhibited the best performance due to the superior properties of biogenic nano-FeS (e.g., more synthetic amount, smaller particle size, better dispersion). The MFC with the Ca-FeS biocathode achieved the highest power density (42.08\u00a0\u00b1\u00a01.42\u00a0mW/m2) and Cr6+ removal efficiency (99.18\u00a0\u00b1\u00a00.1\u00a0%), which were 1.42 and 2.08 times as high as those of the MFC with the normal biocathode, respectively. The synergistic effects of nano-FeS and microorganisms enhanced the bioelectrochemical reduction of Cr6+, first realizing deep reduction of Cr6+ to Cr0 in biocathode MFCs. This significantly alleviated the cathode passivation caused by Cr3+ deposition. In addition, the hybridized nano-FeS as 'armor' layers protected the microbes from toxic attack by Cr6+, improving the biofilm physiological activity and extracellular polymeric substances (EPS) secretion. The hybridized nano-FeS as 'electron bridges' facilitated the microbial community to form a balanced, stable and syntrophic ecological structure. This study proposes a novel strategy through the cathode in-situ biosynthesis of nanomaterials to fabricate hybridized electrode biofilms with enhanced EET and microbial activity for toxic pollutant treatment in bioelectrochemical systems.", "keywords": ["Chromium", "Bioelectric Energy Sources", "Nanoparticles", "7. Clean energy", "Electrodes"], "contacts": [{"organization": "Fan, Mengjie, Zhuang, Xinglei, Gao, Zhen, Lv, Zuopeng, Dong, Weiliang, Xin, Fengxue, Chen, Yingwen, Jia, Honghua, Wu, Xiayuan,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2023.164311"}, {"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.2023.164311", "name": "item", "description": "10.1016/j.scitotenv.2023.164311", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2023.164311"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-09-01T00:00:00Z"}}, {"id": "10.1016/j.watres.2017.10.006", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-05-30T16:17:52Z", "type": "Journal Article", "created": "2017-10-10", "title": "Tannic acid promotes ion release of copper oxide nanoparticles: Impacts from solution pH change and complexation reactions", "description": "The increasing number of applications in which copper oxide nanoparticles (CuO NPs) are used, may lead to potential release of CuO NPs into the environment. However, the impact of natural organic matters on the behavior and fate of CuO NPs in aquatic media is still largely unknown. In this study, the dissolution and aggregation of CuO NPs under the exposure of tannic acid (TA) were monitored over a period of 72\u00a0h, with a focus on assessing the contributions of solution pH changes and complexation reactions. Results showed that the total amount of Cu2+ released from CuO NPs increased in the presence of TA especially at the highest TA concentration of 73.5\u00a0\u03bcmol/L. Although TA was observed to wrap around the CuO NPs, the aggregation of CuO NPs was not strongly influenced by TA and by the solution pH as investigated in this study. The kinetics of Cu2+ release were fitted using the modified pseudo second-order model and the rate of dissolution was assessed to be highest at TA\u00a0=\u00a014.7\u00a0\u03bcmol/L. At pH\u00a0=\u00a04, the increased H+ concentration was responsible for increased Cu2+ release, whereas the complexation reaction between Cu2+ and TA dominated at pH\u00a0=\u00a07. These findings suggested that the effects of TA on the dissolution of CuO NPs were a combination of solution pH change and complexation reaction, the relative fractions of which also depended on the solution pH. Additionally, the percentage of Cu2+ released from the CuO NPs was found to increase upon decreasing concentrations of CuO NPs. Our work helps to further understand how and to which extent natural organic matters affect the behavior and fate of CuO NPs.", "keywords": ["0211 other engineering and technologies", "Metal Nanoparticles", "Oxides", "02 engineering and technology", "Hydrogen-Ion Concentration", "01 natural sciences", "7. Clean energy", "6. Clean water", "Kinetics", "13. Climate action", "Tannins", "Copper", "Water Pollutants", " Chemical", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.watres.2017.10.006"}, {"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.2017.10.006", "name": "item", "description": "10.1016/j.watres.2017.10.006", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.watres.2017.10.006"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-12-01T00:00:00Z"}}, {"id": "10.1021/acs.est.7b02944", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:17:59Z", "type": "Journal Article", "created": "2017-10-11", "title": "Novel Multi-isotope Tracer Approach To Test ZnO Nanoparticle and Soluble Zn Bioavailability in Joint Soil Exposures", "description": "Here we use two enriched stable isotopes, 68Znen and 64Znen (>99%), to prepare 68ZnO nanoparticles (NPs) and soluble 64ZnCl2. The standard LUFA 2.2 test soil was dosed with 68ZnO NPs and soluble 64ZnCl2 to 5 mg kg-1 each, plus between 0 and 95 mg kg-1 of soluble ZnCl2 with a natural isotope composition. After 0, 1, 3, 6, and 12 months of soil incubation, earthworms (Eisenia andrei) were introduced for 72 h exposures. Analyses of soils, pore waters, and earthworm tissues using multiple collector inductively coupled plasma mass spectrometry allowed the simultaneous measurement of the diagnostic 68Zn/66Zn, 64Zn/66Zn, and 68Zn/64Zn ratios, from which the three different isotopic forms of Zn were quantified. Eisenia andrei was able to regulate Zn body concentrations with no difference observed between the different total dosing concentrations. The accumulation of labeled Zn by the earthworms showed a direct relationship with the proportion of labeled to total Zn in the pore water, which increased with longer soil incubation times and decreasing soil pH. The 68Znen/64Znen ratios determined for earthworms (1.09 \u00b1 0.04), soils (1.09 \u00b1 0.02), and pore waters (1.08 \u00b1 0.02) indicate indistinguishable environmental distribution and uptake of the Zn forms, most likely due to rapid dissolution of the ZnO NPs.", "keywords": ["104002 Analytische Chemie", "550", "TRANSFORMATIONS", "FATE", "0211 other engineering and technologies", "Biological Availability", "02 engineering and technology", "01 natural sciences", "Soil", "104002 Analytical chemistry", "104023 Umweltchemie", "ENGINEERED NANOMATERIALS", "MD Multidisciplinary", "Animals", "Soil Pollutants", "105906 Environmental geosciences", "210004 Nanomaterials", "Oligochaeta", "EARTHWORM EISENIA-ANDREI", "0105 earth and related environmental sciences", "ENVIRONMENT", "104023 Environmental chemistry", "KNOWLEDGE GAPS", "[SDU.ENVI] Sciences of the Universe [physics]/Continental interfaces", " environment", "6. Clean water", "Zinc", "Nanoparticles", "Zinc Isotopes", "Zinc Oxide", "210004 Nanomaterialien", "Environmental Sciences", "105906 Umweltgeowissenschaften"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.7b02944"}, {"href": "https://doi.org/10.1021/acs.est.7b02944"}, {"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.7b02944", "name": "item", "description": "10.1021/acs.est.7b02944", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.7b02944"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-10-26T00:00:00Z"}}, {"id": "10.1021/acs.est.9b07562", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:17:59Z", "type": "Journal Article", "created": "2020-02-24", "title": "Silver Nanoparticles Alter Soil Microbial Community Compositions and Metabolite Profiles in Unplanted and Cucumber-Planted Soils", "description": "The rapid development of nanotechnology makes the environmental impact assessment a necessity to ensure the sustainable use of engineered nanomaterials. Here, silver nanoparticles (AgNPs) at 100 mg/kg were added to soils in the absence or presence of cucumber (Cucumis sativa) plants for 60 days. The response of the soil microbial community and associated soil metabolites was investigated by 16S rRNA gene sequencing and gas chromatography-mass spectrometry (GC-MS)-based metabolomics, respectively. The results show that AgNP exposure significantly increased the soil pH in both unplanted and cucumber-planted soils. The soil bacterial community structure was altered upon Ag exposure in both soils. Several functionally significant bacterial groups, which are associated with carbon, nitrogen, and phosphorus cycling, were compromised by AgNPs in both unplanted and cucumber-planted soils. Generally, plants played a limited role in mediating the impact of AgNPs on the bacterial community. Soil metabolomic analysis showed that AgNPs altered the metabolite profile in both unplanted and cucumber-planted soils. The significantly changed metabolites are involved in sugar and amino acid-related metabolic pathways, indicating the perturbation of C and N metabolism, which is consistent with the bacterial community structure results. In addition, several fatty acids were significantly decreased upon exposure to AgNPs in both unplanted and cucumber-planted soils, suggesting the possible oxidative stress imposed on microbial cell membranes. These results provide valuable information for understanding the biological and biochemical impact of AgNP exposure on both plant species and on soil microbial communities; such understanding is needed to understand the risk posed by these materials in the environment.", "keywords": ["0301 basic medicine", "2. Zero hunger", "0303 health sciences", "Silver", "Microbiota", "Metal Nanoparticles", "15. Life on land", "6. Clean water", "Soil", "03 medical and health sciences", "13. Climate action", "RNA", " Ribosomal", " 16S", "Cucumis sativus", "Soil Microbiology"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.est.9b07562"}, {"href": "https://doi.org/10.1021/acs.est.9b07562"}, {"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.9b07562", "name": "item", "description": "10.1021/acs.est.9b07562", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.est.9b07562"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-02-24T00:00:00Z"}}, {"id": "10.1021/acs.jafc.9b06429", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:17:59Z", "type": "Journal Article", "created": "2020-02-24", "title": "High-Throughput Screening for Engineered Nanoparticles That Enhance Photosynthesis Using Mesophyll Protoplasts", "description": "Certain engineered nanoparticles (NPs) have unique properties that have exhibited significant potential for promoting photosynthesis and enhancing crop productivity. Understanding the fundamental interactions between NPs and plants is crucial for the sustainable development of nanoenabled agriculture. Leaf mesophyll protoplasts, which maintain similar physiological response and cellular activity as intact plants, were selected as a model system to study the impact of NPs on photosynthesis. The mesophyll protoplasts isolated from spinach were cultivated with different NMs (Fe, Mn3O4, SiO2, Ag, and MoS2) dosing at 50 mg/L for 2 h under illumination. The potential maximum quantum yield and adenosine triphosphate (ATP) production of mesophyll protoplasts were significantly increased by Mn3O4 and Fe NPs (23% and 43%, respectively), and were decreased by Ag and MoS2 NPs. The mechanism for the photosynthetic enhancement by Mn3O4 and Fe is to increase the photocurrent and electron transfer rate, as revealed by photoelectrochemical measurement. GC-MS based single cell type metabolomics reveal that NPs (Fe and MoS2) altered the metabolic profiles of mesophyll cells during 2 h of illumination period. Separately, the effect of NPs exposure on photosynthesis and biomass were also conducted at the whole plant level. A strong correlation was observed with protoplast data; plant biomass was significantly increased by Mn3O4 exposure (57%) but was decreased (24%) by treatment of Ag NPs. The use of mesophyll protoplasts can be a fast and reliable tool for screening NPs to enhance photosynthesis for potential nanofertilizer use. Importantly, inclusion of a metabolic analysis can provide mechanistic toxicity data to ensure the development 'safer-by-design' nanoenabled platforms.", "keywords": ["0301 basic medicine", "2. Zero hunger", "0303 health sciences", "03 medical and health sciences", "Protoplasts", "Nanoparticles", "Photosynthesis", "Silicon Dioxide", "High-Throughput Screening Assays"]}, "links": [{"href": "https://pubs.acs.org/doi/pdf/10.1021/acs.jafc.9b06429"}, {"href": "https://doi.org/10.1021/acs.jafc.9b06429"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Agricultural%20and%20Food%20Chemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1021/acs.jafc.9b06429", "name": "item", "description": "10.1021/acs.jafc.9b06429", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/acs.jafc.9b06429"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-02-24T00:00:00Z"}}, {"id": "10.1038/s41467-018-03192-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:18:18Z", "type": "Journal Article", "created": "2018-02-19", "title": "Bounding cross-shelf transport time and degradation in Siberian-Arctic land-ocean carbon transfer", "description": "AbstractThe burial of terrestrial organic carbon (terrOC) in marine sediments contributes to the regulation of atmospheric CO2 on geological timescales and may mitigate positive feedback to present-day climate warming. However, the fate of terrOC in marine settings is debated, with uncertainties regarding its degradation during transport. Here, we employ compound-specific radiocarbon analyses of terrestrial biomarkers to determine cross-shelf transport times. For the World\uffe2\uff80\uff99s largest marginal sea, the East Siberian Arctic shelf, transport requires 3600\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff89300 years for the 600\uffe2\uff80\uff89km from the Lena River to the Laptev Sea shelf edge. TerrOC was reduced by ~85% during transit resulting in a degradation rate constant of 2.4\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff890.6\uffe2\uff80\uff89kyr\uffe2\uff88\uff921. Hence, terrOC degradation during cross-shelf transport constitutes a carbon source to the atmosphere over millennial time. For the contemporary carbon cycle on the other hand, slow terrOC degradation brings considerable attenuation of the decadal-centennial permafrost carbon-climate feedback caused by global warming.Despite the global significance of the subsurface biosphere, the degree to which it depends on surface organic carbon (OC) is still poorly understood. Here, we compare stable and radiogenic carbon isotope compositions of microbial phospholipid fatty acids (PLFAs) with those of in situ potential microbial C sources to assess the major C sources for subsurface microorganisms in biogeochemical distinct shallow aquifers (Critical Zone Exploratory, Thuringia Germany). Despite the presence of younger OC, the microbes assimilated 14C\uffe2\uff80\uff90free OC to varying degrees; ~31% in groundwater within the oxic zone, ~47% in an iron reduction zone, and ~70% in a sulfate reduction/anammox zone. The persistence of trace amounts of mature and partially biodegraded hydrocarbons suggested that autochthonous petroleum\uffe2\uff80\uff90derived hydrocarbons were a potential 14C\uffe2\uff80\uff90free C source for heterotrophs in the oxic zone. In this zone, \uffce\uff9414C values of dissolved inorganic carbon (\uffe2\uff88\uff92366\uffc2\uffa0\uffc2\uffb1\uffc2\uffa018\uffe2\uff80\uffb0) and 11MeC16:0 (\uffe2\uff88\uff92283\uffc2\uffa0\uffc2\uffb1\uffc2\uffa032\uffe2\uff80\uffb0), an important component in autotrophic nitrite oxidizers, were similar enough to indicate that autotrophy is an important additional C fixation pathway. In anoxic zones, methane as an important C source was unlikely since the 13C\uffe2\uff80\uff90fractionations between the PLFAs and CH4 were inconsistent with kinetic isotope effects associated with methanotrophy. In the sulfate reduction/anammox zone, the strong 14C\uffe2\uff80\uff90depletion of 10MeC16:0 (\uffe2\uff88\uff92942\uffc2\uffa0\uffc2\uffb1\uffc2\uffa022\uffe2\uff80\uffb0), a PLFA common in sulfate reducers, indicated that those bacteria were likely to play a critical part in 14C\uffe2\uff80\uff90free sedimentary OC cycling. Results indicated that the 14C\uffe2\uff80\uff90content of microbial biomass in shallow sedimentary aquifers results from complex interactions between abundance and bioavailability of naturally occurring OC, hydrogeology, and specific microbial metabolisms.The question of why some types of organic matter are more persistent while others decompose quickly in soils has motivated a large amount of research in recent years. Persistence is commonly characterized as turnover or mean residence time of soil organic matter (SOM). However, turnover and residence times are ambiguous measures of persistence, because they could represent the concept of either age or transit time. To disambiguate these concepts and propose a metric to assess SOM persistence, we calculated age and transit time distributions for a wide range of soil organic carbon models. Furthermore, we show how age and transit time distributions can be obtained from a stochastic approach that takes a deterministic model of mass transfers among different pools and creates an equivalent stochastic model at the level of atoms. Using this approach we show the following: (1) Age distributions have relatively old mean values and long tails in relation to transit time distributions, suggesting that carbon stored in soils is on average much older than carbon in the release flux. (2) The difference between mean ages and mean transit times is large, with estimates of soil organic carbon persistence on the order of centuries or millennia when assessed using ages and on the order of decades when using transit or turnover times. (3) The age distribution is an appropriate metric to characterize persistence of SOM. An important implication of our analysis is that random chance is a factor that helps to explain why some organic matter persists for millennia in soil.
", "keywords": ["2. Zero hunger", "Aging", "time scales", "04 agricultural and veterinary sciences", "carbon storage", "15. Life on land", "Oceanography", "01 natural sciences", "soil models", "Atmospheric Sciences", "Geochemistry", "Climate change impacts and adaptation", "13. Climate action", "Geoinformatics", "Earth Sciences", "Meteorology & Atmospheric Sciences", "0401 agriculture", " forestry", " and fisheries", "soil carbon", "Climate Change Impacts and Adaptation", "Environmental Sciences", "model diagnostics", "Research Articles", "biogeochemical cycling", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018GB005950"}, {"href": "https://escholarship.org/content/qt2sh647x7/qt2sh647x7.pdf"}, {"href": "https://doi.org/10.1029/2018GB005950"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Biogeochemical%20Cycles", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2018GB005950", "name": "item", "description": "10.1029/2018GB005950", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2018GB005950"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-10-01T00:00:00Z"}}, {"id": "10.1029/2017JD027827", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:18:11Z", "type": "Journal Article", "created": "2018-04-26", "title": "Fine Particle Emissions From Tropical Peat Fires Decrease Rapidly With Time Since Ignition", "description": "AbstractSoutheast Asia experiences frequent fires in fuel\uffe2\uff80\uff90rich tropical peatlands, leading to extreme episodes of regional haze with high concentrations of fine particulate matter (PM2.5) impacting human health. In a study published recently, the first field measurements of PM2.5 emission factors for tropical peat fires showed larger emissions than from other fuel types. Here we report even higher PM2.5 emission factors, measured at newly ignited peat fires in Malaysia, suggesting that current estimates of fine particulate emissions from peat fires may be underestimated by a factor of 3 or more. In addition, we use both field and laboratory measurements of burning peat to provide the first mechanistic explanation for the high variability in PM2.5 emission factors, demonstrating that buildup of a surface ash layer causes the emissions of PM2.5 to decrease as the peat fire progresses. This finding implies that peat fires are more hazardous (in terms of aerosol emissions) when first ignited than when still burning many days later. Varying emission factors for PM2.5 also have implications for our ability to correctly model the climate and air quality impacts downwind of the peat fires. For modelers able to implement a time\uffe2\uff80\uff90varying emission factor, we recommend an emission factor for PM2.5 from newly ignited tropical peat fires of 58\uffc2\uffa0g of PM2.5 per kilogram of dry fuel consumed (g/kg), reducing exponentially at a rate of 9%/day. If the age of the fire is unknown or only a single value may be used, we recommend an average value of 24\uffc2\uffa0g/kg.
", "keywords": ["5", "550", "TRACE GASES", "PM2", "PM2.5", "Social and Behavioral Sciences", "01 natural sciences", "TRANSFORM INFRARED-SPECTROSCOPY", "INDONESIA", "CARBON", "SDG 3 - Good Health and Well-being", "11. Sustainability", "Medicine and Health Sciences", "Meteorology & Atmospheric Sciences", "AUSTRALIAN VEGETATION FIRES", "Research Articles", "0105 earth and related environmental sciences", "Science & Technology", "GE", "emissions", "AIR-POLLUTION", "15. Life on land", "FOREST", "FIELD-MEASUREMENTS", "DERIVATION", "13. Climate action", "Physical Sciences", "PREMATURE MORTALITY", "peat", "FoR 0401 (Atmospheric Sciences)", "FoR 0502 (Environmental Science and Management)", "fire"]}, "links": [{"href": "https://researchonline.ljmu.ac.uk/id/eprint/9303/1/Fine%20Particle%20Emissions%20From%20Tropical%20Peat%20Fires%20Decrease%20Rapidly%20With%20Time%20Since%20Ignition..pdf"}, {"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2017JD027827"}, {"href": "https://doi.org/10.1029/2017JD027827"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Atmospheres", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2017JD027827", "name": "item", "description": "10.1029/2017JD027827", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2017JD027827"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-05-16T00:00:00Z"}}, {"id": "10.1029/2018je005802", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:18:11Z", "type": "Journal Article", "created": "2019-01-22", "title": "Geological Evidence of Planet\u2010Wide Groundwater System on Mars", "description": "AbstractThe scale of groundwater upwelling on Mars, as well as its relation to sedimentary systems, remains an ongoing debate. Several deep craters (basins) in the northern equatorial regions show compelling signs that large amounts of water once existed on Mars at a planet\uffe2\uff80\uff90wide scale. The presence of water\uffe2\uff80\uff90formed features, including fluvial Gilbert and sapping deltas fed by sapping valleys, constitute strong evidence of groundwater upwelling resulting in long term standing bodies of water inside the basins. Terrestrial field evidence shows that sapping valleys can occur in basalt bedrock and not only in unconsolidated sediments. A hypothesis that considers the elevation differences between the observed morphologies and the assumed basal groundwater level is presented and described as the \uffe2\uff80\uff9cdike\uffe2\uff80\uff90confined water\uffe2\uff80\uff9d model, already present on Earth and introduced for the first time in the Martian geological literature. Only the deepest basins considered in this study, those with bases deeper than \uffe2\uff88\uff924000\uffc2\uffa0m in elevation below the Mars datum, intercepted the water\uffe2\uff80\uff90saturated zone and exhibit evidence of groundwater fluctuations. The discovery of these groundwater discharge sites on a planet\uffe2\uff80\uff90wide scale strongly suggests a link between the putative Martian ocean and various configurations of sedimentary deposits that were formed as a result of groundwater fluctuations during the Hesperian period. This newly recognized evidence of water\uffe2\uff80\uff90formed features significantly increases the chance that biosignatures could be buried in the sediment. These deep basins (groundwater\uffe2\uff80\uff90fed lakes) will be of interest to future exploration missions as they might provide evidence of geological conditions suitable for life.
", "keywords": ["13. Climate action", "0103 physical sciences", "Gilbert Delta; Mars; groundwater; lakes; sapping valley; sedimentology.", "15. Life on land", "01 natural sciences", "Research Articles", "6. Clean water", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://ricerca.unich.it/bitstream/11564/702001/1/Salese_et_al-2019-Journal_of_Geophysical_Research__Planets-print.pdf"}, {"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2018JE005802"}, {"href": "https://doi.org/10.1029/2018je005802"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Geophysical%20Research%3A%20Planets", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2018je005802", "name": "item", "description": "10.1029/2018je005802", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2018je005802"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-01T00:00:00Z"}}, {"id": "10.1029/2019wr025310", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:18:12Z", "type": "Journal Article", "created": "2019-11-11", "title": "A Precipitation Recycling Network to Assess Freshwater Vulnerability: Challenging the Watershed Convention", "description": "AbstractWater resources and water scarcity are usually regarded as local aspects for which a watershed\uffe2\uff80\uff90based management appears adequate. However, precipitation, as a main source of freshwater, may depend on moisture supplied through land evaporation from outside the watershed. This notion of evaporation as a local \uffe2\uff80\uff9cgreen water\uffe2\uff80\uff9d supply to precipitation is typically not considered in hydrological water assessments. Here we propose the concept of a watershed precipitation recycling network, which establishes atmospheric pathways and links land surface evaporation as a moisture supply to precipitation, hence contributing to local but also remote freshwater resources. Our results show that up to 74% of summer precipitation over European watersheds depends on moisture supplied from other watersheds, which contradicts the conventional consideration of autarkic watersheds. The proposed network approach illustrates atmospheric pathways and enables the objective assessment of freshwater vulnerability and water scarcity risks under global change. The illustrated watershed interdependence emphasizes the need for global water governance to secure freshwater availability.
", "keywords": ["CLIMATE-CHANGE", "0207 environmental engineering", "02 engineering and technology", "MOISTURE", "15. Life on land", "01 natural sciences", "6. Clean water", "TIME", "12. Responsible consumption", "EVAPORATION", "VARIABILITY", "13. Climate action", "Earth and Environmental Sciences", "USE IMPACTS", "IRRIGATION", "11. Sustainability", "SCARCITY", "MULTIMODEL", "SATELLITE", "Research Articles", "Water Science and Technology", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/2019WR025310"}, {"href": "https://doi.org/10.1029/2019wr025310"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Water%20Resources%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2019wr025310", "name": "item", "description": "10.1029/2019wr025310", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2019wr025310"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-11-01T00:00:00Z"}}, {"id": "10.1029/2020gb006719", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:18:12Z", "type": "Journal Article", "created": "2020-11-18", "title": "Stream Dissolved Organic Matter in Permafrost Regions Shows Surprising Compositional Similarities but Negative Priming and Nutrient Effects", "description": "AbstractPermafrost degradation is delivering bioavailable dissolved organic matter (DOM) and inorganic nutrients to surface water networks. While these permafrost subsidies represent a small portion of total fluvial DOM and nutrient fluxes, they could influence food webs and net ecosystem carbon balance via priming or nutrient effects that destabilize background DOM. We investigated how addition of biolabile carbon (acetate) and inorganic nutrients (nitrogen and phosphorus) affected DOM decomposition with 28\uffe2\uff80\uff90day incubations. We incubated late\uffe2\uff80\uff90summer stream water from 23 locations nested in seven northern or high\uffe2\uff80\uff90altitude regions in Asia, Europe, and North America. DOM loss ranged from 3% to 52%, showing a variety of longitudinal patterns within stream networks. DOM optical properties varied widely, but DOM showed compositional similarity based on Fourier transform ion cyclotron resonance mass spectrometry (FT\uffe2\uff80\uff90ICR MS) analysis. Addition of acetate and nutrients decreased bulk DOM mineralization (i.e., negative priming), with more negative effects on biodegradable DOM but neutral or positive effects on stable DOM. Unexpectedly, acetate and nutrients triggered breakdown of colored DOM (CDOM), with median decreases of 1.6% in the control and 22% in the amended treatment. Additionally, the uptake of added acetate was strongly limited by nutrient availability across sites. These findings suggest that biolabile DOM and nutrients released from degrading permafrost may decrease background DOM mineralization but alter stoichiometry and light conditions in receiving waterbodies. We conclude that priming and nutrient effects are coupled in northern aquatic ecosystems and that quantifying two\uffe2\uff80\uff90way interactions between DOM properties and environmental conditions could resolve conflicting observations about the drivers of DOM in permafrost zone waterways.
", "keywords": ["0106 biological sciences", "550", "permafrost regions", "thermokarst", "vaikutukset", "ta1171", "geosciences", "ikirouta", "carbon cycling", "551", "ravinteet", "01 natural sciences", "nutrients", "cryosphere and high-latitude processes", "Biology", "Research Articles", "organic matter", "0105 earth and related environmental sciences", "compositional similarities", "nutrients and nutrient cycling", "hiilen kierto", "ravinteiden kierr\u00e4tys", "15. Life on land", "rivers", "6. Clean water", "nutrient effects", "13. Climate action", "orgaaninen aines", "1171 Geotieteet", "SDG 6 - Clean Water and Sanitation", "joet", "permafrost"]}, "links": [{"href": "https://digitalcommons.usu.edu/context/biology_facpub/article/2820/viewcontent/2020GB006719.pdf"}, {"href": "https://doi.org/10.1029/2020gb006719"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Biogeochemical%20Cycles", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2020gb006719", "name": "item", "description": "10.1029/2020gb006719", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2020gb006719"}, {"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": "10.1029/2020wr027282", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-30T16:18:12Z", "type": "Journal Article", "created": "2020-07-17", "title": "The Stream Length Duration Curve: A Tool for Characterizing the Time Variability of the Flowing Stream Length", "description": "AbstractIn spite of the importance of stream network dynamics for hydrology, ecology, and biogeochemistry, there is limited availability of analytical tools suitable for characterizing the temporal variability of the active fraction of river networks. To fill this gap, we introduce the concept of Stream Length Duration Curve (SLDC), the inverse of the exceedance probability of the total length of active streams. SLDCs summarize efficiently the effect of hydrological variability on the length of the flowing streams under a variety of settings. A set of stochastic network models is developed to link the features of the local hydrological status of the network nodes with the shape of the SLDC. We show that the mean network length is dictated by the mean persistency of the nodes, whereas the shape of the SLDC is driven by the spatial distribution of the local persistencies and their network\uffe2\uff80\uff90scale spatial correlation. Ten field surveys performed in 2018 were used to estimate the empirical SLDC of the Valfredda river (Italy), which was found to be steep and regular\uffe2\uff80\uff94indicating a pronounced sensitivity of the active stream length to the underlying hydrological conditions. Available observations also suggest that the activation of temporary reaches during network expansion is hierarchical, from the most to the least persistent stretches. Under these circumstances, the SLDC corresponds to the spatial Cumulative Distribution Function of the nodes persistencies. The study provides a sound theoretical basis for the analyses of network dynamics in temporary rivers.
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