{"type": "FeatureCollection", "features": [{"id": "10.5281/zenodo.14185189", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:22:15Z", "type": "Dataset", "title": "Dataset: experiments on volatile organic compounds uptake by the active layer soils of Greenlandic permafrost areas", "description": "This dataset is associated with a publication currently under peer review (DOI and link to the publication will be updated upon its publication). Permafrost serves as a significant carbon reservoir, storing up to 1700 petagrams of carbon accumulated over millennia. As global warming accelerates permafrost thaw, this carbon can be mobilized, with a fraction being transformed into volatile organic compounds (VOCs). These VOCs can influence atmospheric oxidizing capacity and contribute to the formation of secondary organic aerosols. In this study, active layer soils\u2014the seasonally unfrozen layer above the permafrost\u2014were collected from two contrasting Greenlandic permafrost locations (Disko Island, and Kangerlussuaq) and incubated to investigate their role in soil-atmosphere VOC exchange. Laboratory incubations were conducted under controlled conditions, where a VOC mixture gas was continuously purged through jars containing the soil samples. Gas concentrations were monitored at the inlet and outlet using a PTR-ToF-MS, allowing for the estimation of VOC uptake rates based on the differences in VOC concentrations. The results demonstrated that these soils actively function as VOC sinks, despite variations in their physicochemical properties. Soils from upper active layers showed relatively higher uptake capacities, with soil moisture, organic matter, and microbial carbon content identified as key factors influencing uptake rates. Additionally, uptake coefficients for several major VOC species were calculated, providing valuable data for future model development. Correlation analysis and varying uptake coefficients suggest that the sink is likely biotic, with selective preferences for different VOCs.\u00a0The findings indicate that the development of a deeper active layer under climate change could enhance the soil\u2019s sink capacity and mitigate net VOC emissions from permafrost thaw. Detailed methods and interpretations of the results can be found in the associated publication.", "keywords": ["volatile organic compounds", "Disko Island", "active layer", "sink", "Kangerlussuaq", "permafrost"], "contacts": [{"organization": "Jiao, Yi, Kramsh\u00f8j, Magnus, Davie-Martin, Cleo, Elberling, Bo, Rinnan, Riikka,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.14185189"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.14185189", "name": "item", "description": "10.5281/zenodo.14185189", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.14185189"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-11-19T00:00:00Z"}}, {"id": "10.1002/lno.11606", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:14:08Z", "type": "Journal Article", "created": "2020-09-25", "title": "The relevance of environment vs. composition on dissolved organic matter degradation in freshwaters", "description": "Abstract

Dissolved organic matter (DOM) composition exerts a direct control on its degradation and subsequent persistence in aquatic ecosystems. Yet, under certain conditions, the degradation patterns of DOM cannot be solely explained by its composition, highlighting the relevance of environmental conditions for DOM degradation. Here, we experimentally assessed the relative influence of composition vs. environment on DOM degradation by performing degradation bioassays using three contrasting DOM sources inoculated with a standardized bacterial inoculum under five distinct environments. The DOM degradation kinetics modeled using reactivity continuum models showed that composition was more important than environment in determining the bulk DOM decay patterns. Changes in DOM composition resulted from the interaction between DOM source and environment. The role of environment was stronger on shaping the bacterial community composition, but the intrinsic nature of the DOM source exerted stronger control on the DOM degradation function.

", "keywords": ["LAKES", "0301 basic medicine", "550", "[SDE.MCG]Environmental Sciences/Global Changes", "Oceanografi", " hydrologi och vattenresurser", "COMMUNITY COMPOSITION", "CARBON", "River sediments", "Oceanography", " Hydrology and Water Resources", "03 medical and health sciences", "Compostos org\u00e0nics", "[SDV.EE]Life Sciences [q-bio]/Ecology", "[CHIM] Chemical Sciences", "Organic compounds", "RIVER", "[CHIM]Chemical Sciences", "14. Life underwater", "DOM", "Ecologia fluvial", "0303 health sciences", "MOLECULAR SIGNATURES", "PERSISTENCE", "Sediments fluvials", "SHIFTS", "6. Clean water", "Stream ecology", "[SDE.BE] Environmental Sciences/Biodiversity and Ecology", "[SDE.MCG] Environmental Sciences/Global Changes", "[SDV.EE] Life Sciences [q-bio]/Ecology", " environment", "FLUORESCENCE SPECTROSCOPY", "13. Climate action", "PATTERNS", "[SDE.BE]Environmental Sciences/Biodiversity and Ecology", "environment"]}, "links": [{"href": "https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.1002/lno.11606"}, {"href": "https://doi.org/10.1002/lno.11606"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Limnology%20and%20Oceanography", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/lno.11606", "name": "item", "description": "10.1002/lno.11606", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/lno.11606"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-09-25T00:00:00Z"}}, {"id": "10.1002/lom3.10364", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:14:08Z", "type": "Journal Article", "created": "2020-06-05", "title": "An international laboratory comparison of dissolved organic matter composition by high resolution mass spectrometry: Are we getting the same answer?", "description": "Abstract

High\uffe2\uff80\uff90resolution mass spectrometry (HRMS) has become a vital tool for dissolved organic matter (DOM) characterization. The upward trend in HRMS analysis of DOM presents challenges in data comparison and interpretation among laboratories operating instruments with differing performance and user operating conditions. It is therefore essential that the community establishes metric ranges and compositional trends for data comparison with reference samples so that data can be robustly compared among research groups. To this end, four identically prepared DOM samples were each measured by 16 laboratories, using 17 commercially purchased instruments, using positive\uffe2\uff80\uff90ion and negative\uffe2\uff80\uff90ion mode electrospray ionization (ESI) HRMS analyses. The instruments identified ~1000 common ions in both negative\uffe2\uff80\uff90 and positive\uffe2\uff80\uff90ion modes over a wide range of m/z values and chemical space, as determined by van Krevelen diagrams. Calculated metrics of abundance\uffe2\uff80\uff90weighted average indices (H/C, O/C, aromaticity, and m/z) of the commonly detected ions showed that hydrogen saturation and aromaticity were consistent for each reference sample across the instruments, while average mass and oxygenation were more affected by differences in instrument type and settings. In this paper we present 32 metric values for future benchmarking. The metric values were obtained for the four different parameters from four samples in two ionization modes and can be used in future work to evaluate the performance of HRMS instruments.Approximately one\uffe2\uff80\uff90third of volatile organic compounds (VOCs) emitted to the atmosphere consists of isoprene, originating from the terrestrial and marine biosphere, with a profound effect on atmospheric chemistry. However, isoprene provides an abundant and largely unexplored source of carbon and energy for microbes. The potential for isoprene degradation in marine and estuarine samples from the Colne Estuary, UK, was investigated using DNA\uffe2\uff80\uff90Stable Isotope Probing (DNA\uffe2\uff80\uff90SIP). Analysis at two timepoints showed the development of communities dominated by Actinobacteria including members of the genera Mycobacterium, Rhodococcus, Microbacterium and Gordonia. Representative isolates, capable of growth on isoprene as sole carbon and energy source, were obtained from marine and estuarine locations, and isoprene\uffe2\uff80\uff90degrading strains of Gordonia and Mycobacterium were characterised physiologically and their genomes were sequenced. Genes predicted to be required for isoprene metabolism, including four\uffe2\uff80\uff90component isoprene monooxygenases (IsoMO), were identified and compared with previously characterised examples. Transcriptional and activity assays of strains growing on isoprene or alternative carbon sources showed that growth on isoprene is an inducible trait requiring a specific IsoMO. This study is the first to identify active isoprene degraders in estuarine and marine environments using DNA\uffe2\uff80\uff90SIP and to characterise marine isoprene\uffe2\uff80\uff90degrading bacteria at the physiological and molecular level.

", "keywords": ["0301 basic medicine", "570", "Volatile Organic Compounds", "0303 health sciences", "550", "Base Sequence", "610", "QR Microbiology", "Sequence Analysis", " DNA", "Environment", "6. Clean water", "Mixed Function Oxygenases", "Mycobacterium", "03 medical and health sciences", "Hemiterpenes", "13. Climate action", "Pentanes", "Butadienes", "Rhodococcus", "14. Life underwater", "Gordonia Bacterium", "Research Articles", "Genome", " Bacterial", "GE Environmental Sciences"]}, "links": [{"href": "https://ueaeprints.uea.ac.uk/id/eprint/63998/4/Published_manuscript.pdf"}, {"href": "http://onlinelibrary.wiley.com/wol1/doi/10.1111/1462-2920.13842/fullpdf"}, {"href": "https://doi.org/10.1111/1462-2920.13842"}, {"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": "10.1111/1462-2920.13842", "name": "item", "description": "10.1111/1462-2920.13842", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/1462-2920.13842"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-07-21T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2022.155783", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:16:41Z", "type": "Journal Article", "created": "2022-05-09", "title": "Impacts of elevation on plant traits and volatile organic compound emissions in deciduous tundra shrubs", "description": "The northernmost regions of our planet experience twice the rate of climate warming compared to the global average. Despite the currently low air temperatures, tundra shrubs are known to exhibit high leaf temperatures and are increasing in height due to warming, but it is unclear how the increase in height will affect the leaf temperature. To study how temperature, soil moisture, and changes in light availability influence the physiology and emissions of climate-relevant volatile organic compounds (VOCs), we conducted a study on two common deciduous tundra shrubs, Salix glauca (separating males and females for potential effects of plant sex) and Betula glandulosa, at two elevations in South Greenland. Low-elevation Salix shrubs were 45% taller, but had 37% lower rates of net CO2 assimilation and 63% lower rates of isoprene emission compared to high-elevation shrubs. Betula shrubs showed 40% higher stomatal conductance and 24% higher glandular trichome density, in the low-elevation valley, compared to those from the high-elevation mountain slope. Betula green leaf volatile emissions were 235% higher at high elevation compared to low elevation. Male Salix showed a distinct VOC blend and emitted 55% more oxygenated VOCs, compared to females, possibly due to plant defense mechanisms. In our light response curves, isoprene emissions increased linearly with light intensity, potentially indicating adaptation to strong light. Leaf temperature decreased with increasing Salix height, at 4 \u00b0C m-1, which can have implications for plant physiology. However, no similar relationship was observed for B. glandulosa. Our results highlight that tundra shrub traits and VOC emissions are sensitive to temperature and light, but that local variations in soil moisture strongly interact with temperature and light responses. Our results suggest that effects of climate warming, alone, poorly predict the actual plant responses in tundra vegetation.", "keywords": ["0301 basic medicine", "Volatile Organic Compounds", "0303 health sciences", "Betula glandulosa", "Light", "Height", "Salix glauca", "Arctic Regions", "VOC", "Climate Change", "CO assimilation", "Salix", "15. Life on land", "Leaf temperature", "Soil", "03 medical and health sciences", "13. Climate action", "11. Sustainability", "Sex", "Soil moisture", "Tundra", "Betula"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2022.155783"}, {"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.2022.155783", "name": "item", "description": "10.1016/j.scitotenv.2022.155783", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2022.155783"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-09-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.08.021", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:16:46Z", "type": "Journal Article", "created": "2007-11-09", "title": "Observed And Modelled Soil Carbon And Nitrogen Changes After Planting A Pinus Radiata Stand Onto Former Pasture", "description": "Abstract After reforesting pasture land, it is often observed that soil carbon stocks decrease. The present work reports findings from a site near Canberra, Australia, where a pine forest (Pinus radiata) was planted onto a former unimproved pasture site. We report a number of detailed observations seeking to understand the basis of the decline in soil C stocks. This is supported by simulations using the whole-ecosystem carbon and nitrogen cycling model CenW 3.1. The model indicated that over the first 18 years after forest establishment, the site lost about 5.5\u00a0t\u00a0C\u00a0ha\u22121 and 588\u00a0kgN\u00a0ha\u22121 from the soil. The C:N ratio of soil organic matter did not change in a systematic manner over the observational period. Carbon and nitrogen stocks contained in the biomass of the 18-year old pine stand exceeded that of the pasture by 88\u00a0t\u00a0C\u00a0ha\u22121 and 393\u00a0kgN\u00a0ha\u22121. An additional 6.1\u00a0t\u00a0C\u00a0ha\u22121 and 110\u00a0kgN\u00a0ha\u22121 accumulated in above-ground litter. These changes, together with the vertical distribution of carbon and nitrogen in the soil, agreed well with the observation at the site. It was assumed that over 18 years, there was also a loss of 86\u00a0kgN\u00a0ha\u22121 from the ecosystem because of normal gaseous losses during nitrogen turn-over and a small amount of nitrogen leaching. Those losses could not be replenished in the pine system without symbiotic biological nitrogen fixation, and there were no fertiliser additions. A simple mass balance approach indicated that the amount of nitrogen accumulating in plant biomass and the litter layer plus the assumed nitrogen loss from the site matched the amount of nitrogen lost from the soil organic nitrogen pool. This reduction in soil nitrogen, together with an unchanged C:N ratio, provided a simple and internally consistent explanation for the observed reduction of soil carbon after reforestation. It supports the general notion that trends in soil carbon upon land-use change can often be controlled by the possible fates of available soil nitrogen.", "keywords": ["550", "Nitrogen", "CenW", "Reforesting pasture lands", "910", "Carbon inorganic compounds", "01 natural sciences", "Ecosystems", "Nitrogen compounds", "C:N ratio", "Nitrogen fixation", "Pasture", "Biomass", "Reforestation", "0105 earth and related environmental sciences", "Keywords: Biological materials", "Pinus radiata", "Nitrogen cycling models", "modeling", "04 agricultural and veterinary sciences", "15. Life on land", "carbon sequestration", "Soil carbon", "Pine", "coniferous tree", "Pine forest", "Soils", "0401 agriculture", " forestry", " and fisheries", "Model"], "contacts": [{"organization": "Roger M. Gifford, LanBin Guo, Miko U. F. Kirschbaum, Miko U. F. Kirschbaum,", "roles": ["creator"]}]}, "links": [{"href": "https://openresearch-repository.anu.edu.au/bitstream/1885/61078/5/Kirschbaum_Observed_and_modelled_soil_carbon.pdf.jpg"}, {"href": "https://openresearch-repository.anu.edu.au/bitstream/1885/61078/7/01_Kirschbaum_Observed_and_modelled_soil_2008.pdf.jpg"}, {"href": "https://doi.org/10.1016/j.soilbio.2007.08.021"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.08.021", "name": "item", "description": "10.1016/j.soilbio.2007.08.021", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.08.021"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-01-01T00:00:00Z"}}, {"id": "10.1016/j.still.2013.02.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:17:04Z", "type": "Journal Article", "created": "2013-03-19", "title": "Cover Crops And No-Till Effects On Physical Fractions Of Soil Organic Matter", "description": "Brazilian Agricultural Research Corporation (EMBRAPA) Rice and Beans Research Center, Santo Antonio de Goias, GO", "keywords": ["land use change", "Soil management", "Aggregates", "Millet", "fallow", "grass", "Cultivation", "Soil pollution", "soil depth", "Crops", "cover crop", "Plants (botany)", "soil organic matter", "Organic compounds", "soil quality", "zero tillage", "Agricultural machinery", "soil aggregate", "Panicum maximum", "2. Zero hunger", "soil surface", "rice", "Brachiaria brizantha", "Biological materials", "04 agricultural and veterinary sciences", "Biogeochemistry", "15. Life on land", "sustainability", "Agronomy", "Brachiaria ruziziensis", "13. Climate action", "Soils", "conservation tillage", "0401 agriculture", " forestry", " and fisheries", "total organic carbon", "plowing"]}, "links": [{"href": "https://doi.org/10.1016/j.still.2013.02.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2013.02.008", "name": "item", "description": "10.1016/j.still.2013.02.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2013.02.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-06-01T00:00:00Z"}}, {"id": "10.1021/jf8020199", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:17:18Z", "type": "Journal Article", "created": "2008-12-10", "title": "Effects Of Elevated Co2 On Grapevine (Vitis Vinifera L.): Volatile Composition, Phenolic Content, And In Vitro Antioxidant Activity Of Red Wine", "description": "The impact of elevated carbon dioxide concentration ([CO2]) on the quality of berries, must, and red wine (with special reference to volatile composition, phenolic content, and antioxidant activity) made from Touriga Franca, a native grape variety of Vitis vinifera L. for Port and Douro wine manufacturing grown in the Demarcated Region of Douro, was investigated during 2005 and 2006. Grapevines were grown either in open-top chambers (OTC) with ambient (365 +/- 10 ppm) or elevated (500 +/-16 ppm) [CO2] or in an outside plot. In general, the increase of [CO2] did not affect berry characteristics, especially the total anthocyan and tannin concentrations. However, the total anthocyan and polyphenol concentrations of the red wine were inhibited under elevated [CO2]. The antioxidant capacity of the wines was determined by DPPH, ABTS, and TBARS assays and, despite the low concentrations of phenolics, the elevated [CO2] did not significantly change the total antioxidant capacity of the red wines. Thirty-five volatile compounds belonging to seven chemical groups were identified: C6 alcohols, higher alcohols, esters, terpenols, carbonyl compounds, acids, volatile phenols, and C13 norisoprenoids. Generally, the same volatile compounds were present in all of the wines, but the relative levels varied among the treatments. The effect of elevated [CO2] was significant because it was detected as an increase in ethyl 2-methylbutyrate, isoamyl acetate, ethyl hexanoate, ethyl octanoate, butyric acid, and isovaleric acid concentrations and a decrease in ethyl acetate concentration when compared to wines produced in ambient [CO2] in 2005. In elevated [CO2], wines from 2006 had lower methionol, 1-octanol, and 4-ethylguaiacol and higher ethyl lactate and linalool concentrations. The increase in [CO2] did not significantly affect C6 alcohols, citronellol, carbonyl compounds, and beta-damascenone concentrations. This study showed that the predicted rise in [CO2] did not produce negative effects on the quality of grapes and red wine. Although some of the compounds were slightly affected, the red wine quality remained almost unaffected.", "keywords": ["Flavonoids", "0301 basic medicine", "Volatile Organic Compounds", "0303 health sciences", "Atmosphere", "Polyphenols", "Wine", "Carbon Dioxide", "Antioxidants", "Anthocyanins", "03 medical and health sciences", "Phenols", "Fruit", "Odorants", "Vitis"]}, "links": [{"href": "https://doi.org/10.1021/jf8020199"}, {"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/jf8020199", "name": "item", "description": "10.1021/jf8020199", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1021/jf8020199"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-12-10T00:00:00Z"}}, {"id": "10.1023/a:1005880031579", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:17:19Z", "type": "Journal Article", "description": "Dynamics of soil organic carbon (SOC) inchronosequences of soils below forests that had beenreplaced by grazed pastures 3\u201325 years ago, wereinvestigated for two contrasting soil types (AndicHumitropept and Eutric Hapludand) in the Atlantic Zoneof Costa Rica. By forest clearing and subsequentestablishment of pastures, photosynthesis changes froma C-3 to a C-4 pathway. The accompanying changes inC-input and its \u03b413C and 14Csignals, were used to quantify SOC dynamics. C-input from rootturnover at a pasture site was measured by sequentialharvesting and 14C-pulse labelling. With aspatial resolution of 5 cm, data on total SOC,\u03b413C and \u03b414C of soil profileswere interpreted with a model that distinguishes threepools of SOC: \u2018active\u2019 C, \u2018slow\u2019 C and \u2018passive\u2019 C,each with a 1-st order decomposition rate(ka, ks and kp). The modelincludes carbon isotope fractionation and depth-dependentdecomposition rates. Transport of C between soillayers was described as a diffusion process, whichaccounts for physical and biotic mixing processes. Calibrated diffusion coefficients were 0.42 cm2yr-1 for the Humitropept and 3.97 cm2yr-1 for the Hapludand chronosequence.Diffusional transport alone was insufficient foroptimal simulation; it had to be augmented bydepth-dependent decomposition rates to explain thedynamics of SOC, \u03b413C and\u03b414C. Decomposition rates decreasedstrongly with depth. Upon increased diffusion,differences between calibrated decomposition rates ofSOC fractions between surface soils and subsoilsdiminished, but the concept of depth-dependentdecomposition had to be retained, to obtain smallresiduals between observed and simulated data. At areference depth of 15\u201320 cm ks was 90 yr-1in the Humitropept and 146 yr-1 in the Hapludand.Slow C contributed most to total organic C in surfacesoils, whereas passive C contributed most below 40 cmdepth. After 18\u201325 years of pasture, net loss of C was2180 g C m-2 for the Hapludand and 150 g m-2for the Humitropept soil.", "keywords": ["land use change; model; soil organic carbon; tropical forest", "soil chemistry", "zoning", "land use", "physical planning", "costa rica", "organic compounds", "soil"]}, "links": [{"href": "https://doi.org/10.1023/a:1005880031579"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biogeochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1023/a:1005880031579", "name": "item", "description": "10.1023/a:1005880031579", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1023/a:1005880031579"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1997-01-01T00:00:00Z"}}, {"id": "10.1088/1748-9326/abb62d", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:18:08Z", "type": "Journal Article", "created": "2020-09-08", "title": "Overlooked organic vapor emissions from thawing Arctic permafrost", "description": "Abstract

Volatile organic compounds (VOCs) play an essential role in climate change and air pollution by modulating tropospheric oxidation capacity and providing precursors for ozone and aerosol formation. Arctic permafrost buries large quantities of frozen soil carbon, which could be released as VOCs with permafrost thawing or collapsing as a consequence of global warming. However, due to the lack of reported studies in this field and the limited capability of the conventional measurement techniques, it is poorly understood how much VOCs could be emitted from thawing permafrost and the chemical speciation of the released VOCs. Here we apply a Vocus proton-transfer-reaction time-of-flight mass spectrometer (PTR-TOF) in laboratory incubations for the first time to examine the release of VOCs from thawing permafrost peatland soils sampled from Finnish Lapland. The warming-induced rapid VOC emissions from the thawing soils were mainly attributed to the direct release of old, trapped gases from the permafrost. The average VOC fluxes from thawing permafrost were four times as high as those from the active layer (the top layer of soil in permafrost terrain). The emissions of less volatile compounds, i.e. sesquiterpenes and diterpenes, increased substantially with rising temperatures. Results in this study demonstrate the potential for substantive VOC releases from thawing permafrost. We anticipate that future global warming could stimulate VOC emissions from the Arctic permafrost, which may significantly influence the Arctic atmospheric chemistry and climate change.Vast amounts of carbon are bound in both active layer and permafrost soils in the Arctic. As a consequence of climate warming, the depth of the active layer is increasing in size and permafrost soils are thawing. We hypothesize that pulses of biogenic volatile organic compounds are released from the near\uffe2\uff80\uff90surface active layer during spring, and during late summer season from thawing permafrost, while the subsequent biogeochemical processes occurring in thawed soils also lead to emissions. Biogenic volatile organic compounds are reactive gases that have both negative and positive climate forcing impacts when introduced to the Arctic atmosphere, and the knowledge of their emission magnitude and pattern is necessary to construct reliable climate models. However, it is unclear how different ecosystems and environmental factors such as drainage conditions upon permafrost thaw affect the emission and compound composition. Here we show that incubations of frozen B horizon of the active layer and permafrost soils collected from a High Arctic heath and fen release a range of biogenic volatile organic compounds upon thaw and during subsequent incubation experiments at temperatures of 10\uffc2\uffb0C and 20\uffc2\uffb0C. Meltwater drainage in the fen soils increased emission rates nine times, while having no effect in the drier heath soils. Emissions generally increased with temperature, and emission profiles for the fen soils were dominated by benzenoids and alkanes, while benzenoids, ketones, and alcohols dominated in heath soils. Our results emphasize that future changes affecting the drainage conditions of the Arctic tundra will have a large influence on volatile emissions from thawing permafrost soils \uffe2\uff80\uff93 particularly in wetland/fen areas.

", "keywords": ["0301 basic medicine", "tundra", "Climate Change", "Permafrost", "01 natural sciences", "meltwater drainage", "Soil", "03 medical and health sciences", "Arctic", "11. Sustainability", "biogenic volatile organic compounds", "gas fluxes", "Tundra", "0105 earth and related environmental sciences", "Volatile Organic Compounds", "Arctic Regions", "Water", "15. Life on land", "soil ecology", "climate change", "13. Climate action", "Gases", "Seasons", "permafrost", "Environmental Monitoring"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.14582"}, {"href": "https://doi.org/10.1111/gcb.14582"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.14582", "name": "item", "description": "10.1111/gcb.14582", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.14582"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-02-25T00:00:00Z"}}, {"id": "10.1073/pnas.2118014119", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:17:55Z", "type": "Journal Article", "created": "2022-09-12", "title": "Strong isoprene emission response to temperature in tundra vegetation", "description": "

Emissions of biogenic volatile organic compounds (BVOCs) are a crucial component of biosphere\uffe2\uff80\uff93atmosphere interactions. In northern latitudes, climate change is amplified by feedback processes in which BVOCs have a recognized, yet poorly quantified role, mainly due to a lack of measurements and concomitant modeling gaps. Hence, current Earth system models mostly rely on temperature responses measured on vegetation from lower latitudes, rendering their predictions highly uncertain. Here, we show how tundra isoprene emissions respond vigorously to temperature increases, compared to model results. Our unique dataset of direct eddy covariance ecosystem-level isoprene measurements in two contrasting ecosystems exhibited Q 10 (the factor by which the emission rate increases with a 10\uffe2\uff80\uff89\uffc2\uffb0C rise in temperature) temperature coefficients of up to 20.8, that is, 3.5 times the Q 10 of 5.9 derived from the equivalent model calculations. Crude estimates using the observed temperature responses indicate that tundra vegetation could enhance their isoprene emissions by up to 41% (87%)\uffe2\uff80\uff94that is, 46% (55%) more than estimated by models\uffe2\uff80\uff94with a 2\uffe2\uff80\uff89\uffc2\uffb0C (4\uffe2\uff80\uff89\uffc2\uffb0C) warming. Our results demonstrate that tundra vegetation possesses the potential to substantially boost its isoprene emissions in response to future rising temperatures, at rates that exceed the current Earth system model predictions.

", "keywords": ["550", "Biogenic volatile organic compound fluxes", "Plant Development", "Eddy covariance", "Global Warming", "01 natural sciences", "biosphere\u2013atmosphere interactions", "Atmospheric Sciences", "Hemiterpenes", "VOC emission modeling", "eddy covariance", "Butadienes", "Temperature response", "biosphere-atmosphere interactions", "Tundra", "0105 earth and related environmental sciences", "Volatile Organic Compounds", "Biosphere\u2013atmosphere interactions", "Temperature", "500", "15. Life on land", "biogenic volatile organic compound fluxes", "Climate Action", "13. Climate action", "Physical Sciences", "Earth Sciences", "temperature response"]}, "links": [{"href": "https://pnas.org/doi/pdf/10.1073/pnas.2118014119"}, {"href": "https://escholarship.org/content/qt6xn5p3sr/qt6xn5p3sr.pdf"}, {"href": "https://doi.org/10.1073/pnas.2118014119"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Proceedings%20of%20the%20National%20Academy%20of%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1073/pnas.2118014119", "name": "item", "description": "10.1073/pnas.2118014119", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1073/pnas.2118014119"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-03-28T00:00:00Z"}}, {"id": "10.1088/1752-7163/ace8b1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:18:09Z", "type": "Journal Article", "created": "2023-07-19", "title": "Food and lifestyle impact on breath VOCs using portable mass spectrometer\u2014pilot study across European countries", "description": "Abstract

In the modern world, many people are changing old dietary and lifestyle habits to improve the quality of their living\uffe2\uff80\uff94to treat or just prevent possible diseases. The main goal of this pilot study was to assess the food and lifestyle impact on exhaled breath volatile organic compounds (VOCs) in various population groups. It was done by employing a recently validated portable membrane-inlet mass spectrometer\uffe2\uff80\uff94MIMS. Thus, the obtained results would also represent the additional confirmation for the employment of the new instrument in the breath analysis. The pilot study involved 151 participants across Europe, including people with overweight, obesity, type 2 diabetes mellitus, cardiovascular disease, people with poor-quality diet and professional athletes. Exhaled breath acetone, ethanol, isoprene, and n-pentane levels were determined in samples before the meal, and 120 min after the meal. Obtained basal ppbv values were mainly in accordance with previously reported, which confirms that MIMS instrument can be used in the breath analysis. Combining the quantified levels along with the information about the participants\uffe2\uff80\uff99 lifestyle habits collected via questionnaire, an assessment of the food and lifestyle impact was obtained. Notable alteration in examined VOC levels upon meal consumption was detected in more than 70% of all participants, with exception for isoprene, which was affected in about half of participants. Lifestyle parameters impact was examined using statistical analysis of variance (ANOVA) on ranks test. Statistically significant differences in basal breath VOC levels were observed among all examined population groups. Also, n-pentane and ethanol levels significantly differed in people of different ages, as well as acetone levels in people with different physical activity habits. These findings are promising for further, more focused research using MIMS technique in breath analysis.The mountain birch [Betula pubescens var. pumila (L.)] forest in the Subarctic is periodically exposed to insect outbreaks, which are expected to intensify due to climate change. To mitigate abiotic and biotic stresses, plants have evolved chemical defenses, including volatile organic compounds (VOCs) and non-volatile specialized compounds (NVSCs). Constitutive and induced production of these compounds, however, are poorly studied in Subarctic populations of mountain birch. Here, we assessed the joint effects of insect herbivory, elevation and season on foliar VOC emissions and NVSC contents of mountain birch. The VOCs were sampled in situ by an enclosure technique and analyzed by gas chromatography\uffe2\uff80\uff93mass spectrometry. NVSCs were analyzed by liquid chromatography\uffe2\uff80\uff93mass spectrometry using an untargeted approach. At low elevation, experimental herbivory by winter moth larvae (Operophtera brumata) increased emissions of monoterpenes and homoterpenes over the 3-week feeding period, and sesquiterpenes and green leaf volatiles at the end of the feeding period. At high elevation, however, herbivory augmented only homoterpene emissions. The more pronounced herbivory effects at low elevation were likely due to higher herbivory intensity. Of the individual compounds, linalool, ocimene, 4,8-dimethylnona-1,3,7-triene, 2-methyl butanenitrile and benzyl nitrile were among the most responsive compounds in herbivory treatments. Herbivory also altered foliar NVSC profiles at both low and high elevations, with the most responsive compounds likely belonging to fatty acyl glycosides and terpene glycosides. Additionally, VOC emissions from non-infested branches were higher at high than low elevation, particularly during the early season, which was mainly driven by phenological differences. The VOC emissions varied substantially over the season, largely reflecting the seasonal variations in temperature and light levels. Our results suggest that if insect herbivory pressure continues to rise in the mountain birch forest with ongoing climate change, it will significantly increase VOC emissions with important consequences for local trophic interactions and climate.

", "keywords": ["0301 basic medicine", "Volatile Organic Compounds", "0303 health sciences", "secondary metabolites", "VDP::Zoologiske og botaniske fag: 480", "plant\u2013insect interactions", "Moths", "15. Life on land", "geometrid moth", "Plant Leaves", "03 medical and health sciences", "biotic stress", "13. Climate action", "volatile organic compounds", "Larva", "8. Economic growth", "11. Sustainability", "VDP::Zoology and botany: 480", "Animals", "Herbivory", "Seasons", "global change", "Betula", "Research Paper"]}, "links": [{"href": "http://academic.oup.com/treephys/article-pdf/41/6/1019/38497290/tpab023.pdf"}, {"href": "https://doi.org/10.1093/treephys/tpab023"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Tree%20Physiology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1093/treephys/tpab023", "name": "item", "description": "10.1093/treephys/tpab023", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1093/treephys/tpab023"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-02-18T00:00:00Z"}}, {"id": "10.1111/gcb.14935", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:18:31Z", "type": "Journal Article", "created": "2020-01-20", "title": "Origin of volatile organic compound emissions from subarctic tundra under global warming", "description": "Abstract

Warming occurs in the Arctic twice as fast as the global average, which in turn leads to a large enhancement in terpenoid emissions from vegetation. Volatile terpenoids are the main class of biogenic volatile organic compounds (VOCs) that play crucial roles in atmospheric chemistry and climate. However, the biochemical mechanisms behind the temperature\uffe2\uff80\uff90dependent increase in VOC emissions from subarctic ecosystems are largely unexplored. Using 13CO2\uffe2\uff80\uff90labeling, we studied the origin of VOCs and the carbon (C) allocation under global warming in the soil\uffe2\uff80\uff93plant\uffe2\uff80\uff93atmosphere system of contrasting subarctic heath tundra vegetation communities characterized by dwarf shrubs of the genera Salix or Betula. The projected temperature rise of the subarctic summer by 5\uffc2\uffb0C was realistically simulated in sophisticated climate chambers. VOC emissions strongly depended on the plant species composition of the heath tundra. Warming caused increased VOC emissions and significant changes in the pattern of volatiles toward more reactive hydrocarbons. The 13C was incorporated to varying degrees in different monoterpene and sesquiterpene isomers. We found that de novo monoterpene biosynthesis contributed to 40%\uffe2\uff80\uff9344% (Salix) and 60%\uffe2\uff80\uff9368% (Betula) of total monoterpene emissions under the current climate, and that warming increased the contribution to 50%\uffe2\uff80\uff9358% (Salix) and 87%\uffe2\uff80\uff9395% (Betula). Analyses of above\uffe2\uff80\uff90 and belowground 12/13C showed shifts of C allocation in the plant\uffe2\uff80\uff93soil systems and negative effects of warming on C sequestration by lowering net ecosystem exchange of CO2 and increasing C loss as VOCs. This comprehensive analysis provides the scientific basis for mechanistically understanding the processes controlling terpenoid emissions, required for modeling VOC emissions from terrestrial ecosystems and predicting the future chemistry of the arctic atmosphere. By changing the chemical composition and loads of VOCs into the atmosphere, the current data indicate that global warming in the Arctic may have implications for regional and global climate and for the delicate tundra ecosystems.

", "keywords": ["0301 basic medicine", "volatile organic compound", "Volatile Organic Compounds", "0303 health sciences", "tundra", "net ecosystem exchange", "Arctic Regions", "15. Life on land", "global warming", "Primary Research Articles", "Global Warming", "13co2 ; Arctic ; Climate Change ; De Novo Biosynthesis ; Global Warming ; Net Ecosystem Exchange ; Subarctic Heath ; Terpene ; Tundra ; Volatile Organic Compound", "03 medical and health sciences", "Arctic", "climate change", "de novo biosynthesis", "subarctic heath", "13. Climate action", "(CO2)-C-13", "11. Sustainability", "terpene", "Tundra", "Ecosystem"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.14935"}, {"href": "https://doi.org/10.1111/gcb.14935"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.14935", "name": "item", "description": "10.1111/gcb.14935", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.14935"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-01-20T00:00:00Z"}}, {"id": "10.1111/gcb.15596", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:18:31Z", "type": "Journal Article", "created": "2021-03-12", "title": "Phenological stage of tundra vegetation controls bidirectional exchange of BVOCs in a climate change experiment on a subarctic heath", "description": "Abstract

Traditionally, biogenic volatile organic compound (BVOC) emissions are often considered a unidirectional flux, from the ecosystem to the atmosphere, but recent studies clearly show the potential for bidirectional exchange. Here we aimed to investigate how warming and leaf litter addition affect the bidirectional exchange (flux) of BVOCs in a long\uffe2\uff80\uff90term field experiment in the Subarctic. We also assessed changes in net BVOC fluxes in relation to the time of day and the influence of different plant phenological stages. The study was conducted in a full factorial experiment with open top chamber warming and annual litter addition treatments in a tundra heath in Abisko, Northern Sweden. After 18\uffc2\uffa0years of treatments, ecosystem\uffe2\uff80\uff90level net BVOC fluxes were measured in the experimental plots using proton\uffe2\uff80\uff90transfer\uffe2\uff80\uff90reaction time\uffe2\uff80\uff90of\uffe2\uff80\uff90flight mass spectrometry (PTR\uffe2\uff80\uff93ToF\uffe2\uff80\uff93MS). The warming treatment increased monoterpene and isoprene emissions by \uffe2\uff89\uff8850%. Increasing temperature, due to diurnal variations, can both increase BVOC emission and simultaneously, increase ecosystem uptake. For any given treatment, monoterpene, isoprene, and acetone emissions also increased with increasing ambient air temperatures caused by diurnal variability. Acetaldehyde, methanol, and sesquiterpenes decreased likely due to a deposition flux. For litter addition, only a significant indirect effect on isoprene and monoterpene fluxes (decrease by ~50%\uffe2\uff80\uff9375%) was observed. Litter addition may change soil moisture conditions, leading to changes in plant species composition and biomass, which could subsequently result in changes to BVOC emission compositions. Phenological stages significantly affected fluxes of methanol, isoprene and monoterpenes. We suggest that plant phenological stages differ in impacts on BVOC net emissions, but ambient air temperature and photosynthetically active radiation (PAR) also interact and influence BVOC net emissions differently. Our results may also suggest that BVOC fluxes are not only a response to changes in temperature and light intensity, as the circadian clock also affects emission rates.

", "keywords": ["BVOC", "Sweden", "Take urgent action to combat climate change and its impacts", "Volatile Organic Compounds", "tundra", "Methanol", "Terpenoids", "Climate Change", "plant volatiles", "15. Life on land", "Primary Research Articles", "phenology", "01 natural sciences", "Arctic", "climate change", "Phenology", "terpenoids", "13. Climate action", "11. Sustainability", "Plant volatiles", "Tundra", "Ecosystem", "methanol", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.15596"}, {"href": "https://doi.org/10.1111/gcb.15596"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.15596", "name": "item", "description": "10.1111/gcb.15596", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.15596"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-04-04T00:00:00Z"}}, {"id": "10.1111/gcb.15773", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:18:31Z", "type": "Journal Article", "created": "2021-06-29", "title": "Synergistic effects of insect herbivory and changing climate on plant volatile emissions in the subarctic tundra.", "description": "Abstract

Climate change increases the insect abundance, especially in Arctic ecosystems. Insect herbivory also significantly increases plant emissions of volatile organic compounds (VOCs), which are highly reactive in the atmosphere and play a crucial role in atmospheric chemistry and physics. However, it is unclear how the effects of insect herbivory on VOC emissions interact with climatic changes, such as warming and increased cloudiness. We assessed how experimental manipulations of temperature and light availability in subarctic tundra, that had been maintained for 30\uffc2\uffa0years at the time of the measurements, affect the VOC emissions from a widespread dwarf birch (Betula nana) when subjected to herbivory by local geometrid moth larvae, the autumnal moth (Epirrita autumnata) and the winter moth (Operophtera brumata). Warming and insect herbivory on B. nana stimulated VOC emission rates and altered the VOC blend. The herbivory\uffe2\uff80\uff90induced increase in sesquiterpene and homoterpene emissions were climate\uffe2\uff80\uff90treatment\uffe2\uff80\uff90dependent. Many herbivory\uffe2\uff80\uff90associated VOCs were more strongly induced in the shading treatment than in other treatments. We showed generally enhanced tundra VOC emissions upon insect herbivory and synergistic effects on the emissions of some VOC groups in a changing climate, which can have positive feedbacks on cloud formation. Furthermore, the acclimation of plants to long\uffe2\uff80\uff90term climate treatments affects VOC emissions and strongly interacts with plant responses to herbivory. Such acclimation complicates predictions of how climate change, together with interacting biotic stresses, affects VOC emissions in the high latitudes.

", "keywords": ["0301 basic medicine", "Volatile Organic Compounds", "0303 health sciences", "Insecta", "Climate Change", "15. Life on land", "Primary Research Articles", "03 medical and health sciences", "13. Climate action", "11. Sustainability", "Animals", "Herbivory", "Tundra", "Betula", "Ecosystem"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.15773"}, {"href": "https://doi.org/10.1111/gcb.15773"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.15773", "name": "item", "description": "10.1111/gcb.15773", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.15773"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-07-17T00:00:00Z"}}, {"id": "10.1186/s43591-025-00112-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:19:11Z", "type": "Journal Article", "created": "2025-03-02", "title": "Tracks of travel: unveiling tire particle concentrations in Swiss cantonal road soils", "description": "Abstract

Tire wear particles (TWP) originating from tire abrasion on roads are a major source of microplastics to the environment. Together with associated pollutants like polycyclic aromatic hydrocarbons and trace metals, TWP are emitted to roadside soils in the immediate vicinity of road networks. Our study aimed at quantifying TWP number and mass concentrations and investigating particle features in low-traffic roadside soils using a novel particle-based analytical approach. On the example of fifteen Swiss cantonal roadside soils, with average daily traffic volumes of 2,290 vehicles per day\uffe2\uff88\uff92\uffe2\uff80\uff891, we sampled composite samples from distances of 1, 2, 5 and 10\uffc2\uffa0m to the roadside. TWP were extracted via density separation and wet-chemical sample purification. TWP analysis was performed using microscope images and trainable Weka segmentation image analysis. Furthermore, associated road pollutants like polycyclic aromatic hydrocarbons, benzop[a]pyrene and trace metals were analysed using TQ GC-MS/MS and ICP-MS. We found average concentrations of 111,000 TWP per kg soil dry weight (TWP kg\uffe2\uff88\uff92\uffe2\uff80\uff891) highest values reaching 615,000 TWP kg\uffe2\uff88\uff92\uffe2\uff80\uff891 and mean TWP masses of 52.7\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff8983.2\uffc2\uffa0mg TWP kg\uffe2\uff88\uff92\uffe2\uff80\uff891. TWP had a minimal Feret diameter of 62.8\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff8945.6\uffc2\uffa0\uffce\uffbcm on average and showed mean circularity values of 0.7\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff890.2, resulting in elliptic particle morphology. TWP concentrations and sizes decreased with increasing distance from the road. Positive relationships were found between TWP numbers and polycyclic aromatic hydrocarbons, benzop[a]pyrene and zinc concentrations in roadside soils. However, a moderate relationship to speed limits was identified. We were able to demonstrate that even in low-traffic areas, roadside soils act as an environmental sink for high concentrations of TWPs and associated pollutants and that spatial distribution and the spread of TWP to soils strongly dependent on the distance to the road.There is an increase in the adoption of biological solutions for plant production as a means of attaining sustainable agriculture. A detailed understanding of the influence of specific bioinoculants and their volatile metabolites on native soil and plant microbiomes can improve future microbiome management practices.

Results

Here, we examined the effect of bacterial inoculants and volatile compounds as individual and combined treatments on apple plant and soil microbiome. The study used specially designed microcosms that facilitated the separation of the different plant compartments. A compartment- and soil-specific effect of treatments on the native soil and plant microbiome was observed. The live bacterial inoculants as compared to their volatiles had a stronger effect on the plant and soil microbiome, particularly the root microbial community. The combined effect of bacterial inoculants was higher compared to volatiles (R2\uffe2\uff80\uff89=\uffe2\uff80\uff895% vs. 3%). Treatment-specific effects were observed, like the influence of 2-butanone on the phyllosphere bacterial diversity, and an increase in fungal richness in Serratia-treated soils.

Conclusions

Among the examined treatments, inoculation with bacteria compared to volatile metabolites induced more significant shifts within the plant and soil microbiome. This observation has implications regarding the merits of applying living microorganisms. The findings highlight the potential of microbiome management approaches for enhancing microbiota functions.

", "keywords": ["Microcosm experiments", "Environmental sciences", "Plant microbiome", "Research", "Sustainable agriculture", "GE1-350", "Volatile organic compounds", "Microbiology", "Bioinoculants", "QR1-502", "Amplicon sequencing"]}, "links": [{"href": "https://doi.org/10.1186/s40793-025-00715-4"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Microbiome", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1186/s40793-025-00715-4", "name": "item", "description": "10.1186/s40793-025-00715-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1186/s40793-025-00715-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2025-05-21T00:00:00Z"}}, {"id": "10.1590/s0100-204x2000000600014", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:19:33Z", "type": "Journal Article", "created": "2007-10-04", "title": "Altera\u00e7\u00f5es Na Mat\u00e9ria Org\u00e2nica E Na Biomassa Microbiana Em Solo De Mata Natural Submetido A Diferentes Manejos", "description": "

Avaliou-se, em um Latossolo Roxo, o efeito de diferentes formas de manejo do solo sobre a mat\uffc3\uffa9ria org\uffc3\uffa2nica do solo e na biomassa microbiana. Os tratamentos usados foram: mata natural; mata natural at\uffc3\uffa9 1976 e caf\uffc3\uffa9 at\uffc3\uffa9 1994 (amostragem na proje\uffc3\uffa7\uffc3\uffa3o da copa e na entrelinha); mata natural at\uffc3\uffa9 1976, caf\uffc3\uffa9 at\uffc3\uffa9 1991 e milho at\uffc3\uffa9 1994; mata natural at\uffc3\uffa9 1940, caf\uffc3\uffa9 at\uffc3\uffa9 1960, citros at\uffc3\uffa9 1978, e cana-de-a\uffc3\uffa7\uffc3\uffbacar at\uffc3\uffa9 1994 (amostragem na linha e na entrelinha). A mata natural apresentou os maiores valores de C org\uffc3\uffa2nico no solo e na fra\uffc3\uffa7\uffc3\uffa3o humina e os menores valores foram obtidos nas \uffc3\uffa1reas com cana-de-a\uffc3\uffa7\uffc3\uffbacar, que apresentaram os maiores valores de C microbiano em rela\uffc3\uffa7\uffc3\uffa3o \uffc3\uffa0 mata natural. O uso agr\uffc3\uffadcola do solo aumentou a porcentagem de C org\uffc3\uffa2nico na forma de \uffc3\uffa1cidos h\uffc3\uffbamicos e f\uffc3\uffbalvicos, em rela\uffc3\uffa7\uffc3\uffa3o \uffc3\uffa0 mata natural. Em geral, o solo apresentou mais de 74% do C org\uffc3\uffa2nico na forma de h\uffc3\uffbamus residual.

", "keywords": ["Soil management", "uso do solo", "Composto org\u00e2nico", "carbono microbiano", "manejo do solo", "microbial carbon", "compostos org\u00e2nicos", "humina", "fulvic acids", "2. Zero hunger", "humin", "Manejo do solo", "organic carbon", "land use", "\u00c1cido f\u00falvico", "\u00e1cido h\u00famico", "\u00e1cido f\u00falvico", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "humic acids", "\u00c1cido h\u00famico", "Land use", "0401 agriculture", " forestry", " and fisheries", "soil management", "carbono org\u00e2nico", "organic compounds"]}, "links": [{"href": "https://doi.org/10.1590/s0100-204x2000000600014"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Pesquisa%20Agropecu%C3%A1ria%20Brasileira", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/s0100-204x2000000600014", "name": "item", "description": "10.1590/s0100-204x2000000600014", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/s0100-204x2000000600014"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2000-06-01T00:00:00Z"}}, {"id": "10.5194/acp-24-7137-2024", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:21:21Z", "type": "Journal Article", "created": "2024-06-21", "title": "On the uncertainty of anthropogenic aromatic volatile organic compound emissions: model evaluation and sensitivity analysis", "description": "

Abstract. Volatile organic compounds (VOCs) significantly impact air quality and atmospheric chemistry, influencing ozone formation and secondary organic aerosol production. Despite their importance, the uncertainties associated with representing VOCs in atmospheric emission inventories are considerable. This work presents a spatiotemporal assessment and evaluation of benzene, toluene, and xylene (BTX) emissions and concentrations in Spain by combining bottom-up emissions, air quality modelling techniques, and ground-based observations. The emissions produced by High-Elective Resolution Modelling Emission System (HERMESv3) were used as input to the Multiscale Online Nonhydrostatic AtmospheRe CHemistry (MONARCH) chemical transport model to simulate surface concentrations across Spain. Comparing modelled and observed levels revealed uncertainty in the anthropogenic emissions, which were further explored through sensitivity tests. The largest levels of observed benzene and xylene were found in industrial sites near coke ovens, refineries, and car manufacturing facilities, where the modelling results show large underestimations. Official emissions reported for these facilities were replaced by alternative estimates, resulting in varied improvements in the model's performance across different stations. However, uncertainties associated with industrial emission processes persist, emphasising the need for further refinement. For toluene, consistent overestimations in background stations were mainly related to uncertainties in the spatial disaggregation of emissions from industrial-use solvent activities, mainly wood paint applications. Observed benzene levels in Barcelona's urban traffic areas were 5\u00a0times larger than the ones observed in Madrid. MONARCH failed to reproduce the observed gradient between the two cities due to uncertainties arising from estimating emissions from motorcycles and mopeds, as well as from different measurement methods and the model's capacity to accurately simulate meteorological conditions. Our results are constrained by the spatial and temporal coverage of available BTX observations, posing a key challenge in evaluating the spatial distribution of modelled levels and associated emissions.

", "keywords": ["Aerosols", "Atmospheric chemistry", "550", "Physics", "QC1-999", "Xylene", "VOCs", "Benzene", "7. Clean energy", "01 natural sciences", "\u00c0rees tem\u00e0tiques de la UPC::Desenvolupament hum\u00e0 i sostenible::Enginyeria ambiental", "Chemistry", "Ozone", "13. Climate action", "Air quality", "11. Sustainability", "Volatile organic compounds", "QD1-999", "Toluene", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.5194/acp-24-7137-2024"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Atmospheric%20Chemistry%20and%20Physics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5194/acp-24-7137-2024", "name": "item", "description": "10.5194/acp-24-7137-2024", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5194/acp-24-7137-2024"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-21T00:00:00Z"}}, {"id": "10.3389/fpls.2020.558979", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:20:33Z", "type": "Journal Article", "created": "2020-10-27", "title": "Insect Herbivory Strongly Modifies Mountain Birch Volatile Emissions", "description": "Insect herbivory is known to augment emissions of biogenic volatile organic compounds (BVOCs). Yet few studies have quantified BVOC responses to insect herbivory in natural populations in pan-Arctic regions. Here, we assess how quantitative and qualitative BVOC emissions change with increasing herbivore feeding intensity in the Subarctic mountain birch (Betula pubescens var pumila (L.)) forest. We conducted three field experiments in which we manipulated the larval density of geometrid moths (Operophtera brumata and Epirrita autumnata), on branches of mountain birch and measured BVOC emissions using the branch enclosure method and gas chromatography-mass spectrometry. Our study showed that herbivory significantly increased BVOC emissions from the branches damaged by larvae. BVOC emissions increased due to insect herbivory at relatively low larvae densities, causing up to 10% of leaf area loss. Insect herbivory also changed the blend composition of BVOCs, with damaged plants producing less intercorrelated BVOC blends than undamaged ones. Our results provide a quantitative understanding of the relationship between the severity of insect herbivore damage and emissions of BVOCs at larvae densities corresponding to background herbivory levels in the Subarctic mountain birch. The results have important and practical implications for modeling induced and constitutive BVOC emissions and their feedbacks to atmospheric chemistry.", "keywords": ["0301 basic medicine", "0303 health sciences", "VDP::Zoologiske og botaniske fag: 480", "insect herbivory", "Plant culture", "Plant Science", "15. Life on land", "geometrid moth", "SB1-1110", "03 medical and health sciences", "biotic stress", "mountain birch", "stress severity", "13. Climate action", "volatile organic compounds", "11. Sustainability", "arctic", "VDP::Zoology and botany: 480"]}, "links": [{"href": "https://doi.org/10.3389/fpls.2020.558979"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Frontiers%20in%20Plant%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3389/fpls.2020.558979", "name": "item", "description": "10.3389/fpls.2020.558979", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3389/fpls.2020.558979"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-10-27T00:00:00Z"}}, {"id": "2117/419477", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:25:12Z", "type": "Journal Article", "created": "2024-06-21", "title": "On the uncertainty of anthropogenic aromatic volatile organic compound emissions: model evaluation and sensitivity analysis", "description": "

Abstract. Volatile organic compounds (VOCs) significantly impact air quality and atmospheric chemistry, influencing ozone formation and secondary organic aerosol production. Despite their importance, the uncertainties associated with representing VOCs in atmospheric emission inventories are considerable. This work presents a spatiotemporal assessment and evaluation of benzene, toluene, and xylene (BTX) emissions and concentrations in Spain by combining bottom-up emissions, air quality modelling techniques, and ground-based observations. The emissions produced by High-Elective Resolution Modelling Emission System (HERMESv3) were used as input to the Multiscale Online Nonhydrostatic AtmospheRe CHemistry (MONARCH) chemical transport model to simulate surface concentrations across Spain. Comparing modelled and observed levels revealed uncertainty in the anthropogenic emissions, which were further explored through sensitivity tests. The largest levels of observed benzene and xylene were found in industrial sites near coke ovens, refineries, and car manufacturing facilities, where the modelling results show large underestimations. Official emissions reported for these facilities were replaced by alternative estimates, resulting in varied improvements in the model's performance across different stations. However, uncertainties associated with industrial emission processes persist, emphasising the need for further refinement. For toluene, consistent overestimations in background stations were mainly related to uncertainties in the spatial disaggregation of emissions from industrial-use solvent activities, mainly wood paint applications. Observed benzene levels in Barcelona's urban traffic areas were 5\u00a0times larger than the ones observed in Madrid. MONARCH failed to reproduce the observed gradient between the two cities due to uncertainties arising from estimating emissions from motorcycles and mopeds, as well as from different measurement methods and the model's capacity to accurately simulate meteorological conditions. Our results are constrained by the spatial and temporal coverage of available BTX observations, posing a key challenge in evaluating the spatial distribution of modelled levels and associated emissions.

", "keywords": ["Aerosols", "Atmospheric chemistry", "550", "Physics", "QC1-999", "Xylene", "VOCs", "Benzene", "01 natural sciences", "7. Clean energy", "\u00c0rees tem\u00e0tiques de la UPC::Desenvolupament hum\u00e0 i sostenible::Enginyeria ambiental", "Chemistry", "Ozone", "13. Climate action", "Air quality", "11. Sustainability", "Volatile organic compounds", "QD1-999", "Toluene", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/2117/419477"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Atmospheric%20Chemistry%20and%20Physics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "2117/419477", "name": "item", "description": "2117/419477", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/2117/419477"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-21T00:00:00Z"}}, {"id": "10.5061/dryad.5dv41nsd1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:21:10Z", "type": "Dataset", "created": "2024-01-22", "title": "Data and R code used in: Plant geographic distribution influences chemical defenses in native and introduced Plantago lanceolata populations", "description": "unspecified# Data and R code used in: Plant geographic distribution influences chemical defenses in native and introduced Plantago lanceolata populations ## Description of the data and file structure * **00_ReadMe_DescriptonVariables.csv**: A list with the description of variables from each file used. * **00_Metadata_Coordinates.csv :** A dataset that includes the coordinates of each Plantago lanceolata population used. * **00_Metadata_Climate.csv :** A dataset that includes coordinates, bioclimatic parameters, and the results of PCA. The dataset was created based on the script '1_Environmental variables.qmd' * **00_Metadata_Individuals.csv:** A dataset that includes general information about each plant individual. Information about root traits and chemistry is missing in four samples since we lost the samples. * **01_Datset_PlantTraits.csv:** Size-related and resource allocation traits measured of *Plantago lanceolata* and herbivore damage. * **02_Dataset_TargetedCompounds.csv:** Phytohormones, Iridoid glycosides, Verbascoside and Flavonoids quantification of the leaves and roots of *Plantago lanceolata*. Data generated from HPLC * **03_Dataset_Volatiles_Area.csv:** Area of identified volatile compounds. Data generated from GC-FID * **03_Dataset_Volatiles_Compounds.csv:** Information on identified volatile compounds. Data generated from GC-MS. * **04_Dataset_Metabolome_Negative_Metadata.txt:** Metadata for files in negative mode * **04_Dataset_Metabolome_Negative_Intensity.xlsx :** File with the intensity of the metabolite features in negative mode. The file was generated from Metaboscape and adapted as required for the Notame package. * **04_Dataset_Metabolome_Negative_Intensity_filtered.xlsx:** File generated after preprocessing of features in negative mode. During the notadame pacakged preprossesing 0 were converted to na * **04_Dataset_Metabolome_Negative.msmsonly.csv:** File with a intensity of the the metabolite features in negative mode with ms/ms data. File generated from Metaboscape. * **04_Results_Metabolome_Negative_canopus_compound_summary.tsv:** Feature classification. Results generated from Sirius software. * **04_Results_Metabolome_Negative_compound_identifications.tsv:** Feature identification. Results generated from Sirius software. * **05_Dataset_Metabolome_Positive_Metadata.txt:** Metadata for files in positive mode * **05_DatasetMetabolome_Positive_Intensity.xlsx :** File with a intensity of the the metabolite features in positive mode. File generated from Metaboscape and adapted as required for the Notame package. * **05_Dataset_Metabolome_Positive_Intensity_filtered:** File generated after preprocessing of features in positive mode.During the notadame pacakged preprossesing 0 were converted to na ## ## Code/Software * **1_Environmental vairables.qmd:** Rscript to Retrieve bioclimatic variables from based on the coordinates of each population and then perform a principal components analysis to reduce the axes variation and included the first principal component as an explanatory variable in our model to estimate trait differences between native and introduced populations. Figure 1b and 1d * **2_PlantTraits_and_Herbivory:** Rscript for statistical anaylsis of size-related traits, resource allocation traits and herbivore damage. Figure 2. It needs to source: Model_1_Fucntion.R, Model_2_Fucntion.R, Plot_Function.R * **3_Metabolome:** Rscript for statistical anaylsis of *Plantago lanceolata* metabolome. Figure 3. It needs to source: Metabolome_preprocessing_R, Model_1_Fucntion.R, Model_2_Fucntion.R, Plot_Function.R. * **4_TargetedCompounds:** Rscript for statistical anaylsis of *Plantago lanceolata* targeted compounds. Figure 4. It needs to source: Model_1_Fucntion.R, Model_2_Fucntion.R, Plot_Function.R * **5_Volatilome:** Rscript for statistical anaylsis of *Plantago lanceolata* metabolome. Figure 5. It needs to source: Model_1_Fucntion.R, Model_2_Fucntion.R, Plot_Function.R * **Model_1_Function.R** : Function to run statistical models * **Model_2_Function.R** : Function to run statistical models * **Plots_Function.R** : Function to run plot graphs * **Metabolome_prepocessing.R:** Script to preprocess features", "keywords": ["environmental gradient", "FOS: Biological sciences", "Metabolomics", "Herbivory", "Volatile organic compounds", "iridoid glycosides", "verbascoside", "plant invasion"], "contacts": [{"organization": "Medina-van Berkum, Pamela, Schm\u00f6ckel, Eric, Bischoff, Armin, Carrasco-Farias, Natalia, Catford, Jane, Feldmann, Reinart, Groten, Karin, Henry, Hugh, Bucharova, Anna, H\u00e4nniger, Sabine, Luong, Justin, Meis, Julia, Oetama, Vincensius S. P., P\u00e4rtel, Meelis, Power, Sally, Villellas, Jesus, Welk, Erik, Wingler, Astrid, Rothe, Beate, Gershenzon, Jonathan, Reichelt, Michael, Roscher, Christiane, Unsicker, Sybille B.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5061/dryad.5dv41nsd1"}, {"rel": "self", "type": "application/geo+json", "title": "10.5061/dryad.5dv41nsd1", "name": "item", "description": "10.5061/dryad.5dv41nsd1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5061/dryad.5dv41nsd1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-02-08T00:00:00Z"}}, {"id": "10138/320678", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:24:14Z", "type": "Journal Article", "created": "2020-09-08", "title": "Overlooked organic vapor emissions from thawing Arctic permafrost", "description": "Abstract

Volatile organic compounds (VOCs) play an essential role in climate change and air pollution by modulating tropospheric oxidation capacity and providing precursors for ozone and aerosol formation. Arctic permafrost buries large quantities of frozen soil carbon, which could be released as VOCs with permafrost thawing or collapsing as a consequence of global warming. However, due to the lack of reported studies in this field and the limited capability of the conventional measurement techniques, it is poorly understood how much VOCs could be emitted from thawing permafrost and the chemical speciation of the released VOCs. Here we apply a Vocus proton-transfer-reaction time-of-flight mass spectrometer (PTR-TOF) in laboratory incubations for the first time to examine the release of VOCs from thawing permafrost peatland soils sampled from Finnish Lapland. The warming-induced rapid VOC emissions from the thawing soils were mainly attributed to the direct release of old, trapped gases from the permafrost. The average VOC fluxes from thawing permafrost were four times as high as those from the active layer (the top layer of soil in permafrost terrain). The emissions of less volatile compounds, i.e. sesquiterpenes and diterpenes, increased substantially with rising temperatures. Results in this study demonstrate the potential for substantive VOC releases from thawing permafrost. We anticipate that future global warming could stimulate VOC emissions from the Arctic permafrost, which may significantly influence the Arctic atmospheric chemistry and climate change.Dissolved organic matter (DOM) composition exerts a direct control on its degradation and subsequent persistence in aquatic ecosystems. Yet, under certain conditions, the degradation patterns of DOM cannot be solely explained by its composition, highlighting the relevance of environmental conditions for DOM degradation. Here, we experimentally assessed the relative influence of composition vs. environment on DOM degradation by performing degradation bioassays using three contrasting DOM sources inoculated with a standardized bacterial inoculum under five distinct environments. The DOM degradation kinetics modeled using reactivity continuum models showed that composition was more important than environment in determining the bulk DOM decay patterns. Changes in DOM composition resulted from the interaction between DOM source and environment. The role of environment was stronger on shaping the bacterial community composition, but the intrinsic nature of the DOM source exerted stronger control on the DOM degradation function.

Terfezia arenaria is a desert truffle native to the Mediterranean Basin region, highly appreciated for its nutritional and aromatic properties. Despite the increasing interest in this desert truffle, T. arenaria is not listed as an edible truffle authorized for trade in the European Union. Therefore, our objective was to showcase T. arenaria\u2019s nutritional and chemical composition and volatile profile. The nutritional analysis showed that T. arenaria is a good source of carbohydrates (67%), proteins (14%), and dietary fibre (10%), resulting in a Nutri-Score A. The truffle\u2019s volatile profile was dominated by eight-carbon volatile compounds, with 1-octen-3-ol being the most abundant (64%), and 29 compounds were reported for the first time for T. arenaria. T. arenaria\u2019s nutritional and chemical compositions were similar to those of four commercial mushroom and truffle species, while the aromatic profile was not. An electronic nose corroborated that T. arenaria\u2018s aromatic profile differs from that of the other four tested mushroom and truffle species. Our data showed that T. arenaria is a valuable food resource with a unique aroma and an analogous composition to meat, which makes it an ideal source for plant-based meat products. Our findings could help promote a sustainable future exploitation of T. arenaria and ensure the quality and authenticity of this delicacy.

", "keywords": ["electronic nose", "mushrooms and truffles", "plant-based meat", "nutritional composition", "CLAVERYI", "MUSHROOMS", "Chemical technology", "ELECTRONIC NOSE", "FOOD SECURITY", "Biology and Life Sciences", "IN-VITRO", "TP1-1185", "VOLATILE ORGANIC-COMPOUNDS", "NUTRITIONAL-VALUE", "CHEMICAL-COMPOSITION", "PLEUROTUS-OSTREATUS", "desert truffles", "Article", "volatile organic compounds", "GC-MS"]}, "links": [{"href": "https://repositorio.ulisboa.pt/bitstream/10451/59752/1/Ferreira%20et%20al%202023_Foods.pdf"}, {"href": "https://www.mdpi.com/2304-8158/12/19/3527/pdf"}, {"href": "https://doi.org/1854/LU-01HGJD6DQK17V1TCWPYZC7YGH8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Foods", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "1854/LU-01HGJD6DQK17V1TCWPYZC7YGH8", "name": "item", "description": "1854/LU-01HGJD6DQK17V1TCWPYZC7YGH8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/1854/LU-01HGJD6DQK17V1TCWPYZC7YGH8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-09-22T00:00:00Z"}}, {"id": "20.500.11755/c93c6b8f-a362-420e-8049-8e1577bb54db", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:24:59Z", "type": "Journal Article", "created": "2019-11-17", "title": "Effects of plastic mulch film residues on wheat rhizosphere and soil properties", "description": "Plastic residues could accumulate in soils as a consequence of using plastic mulching, which results in a serious environmental concern for agroecosystems. As an alternative, biodegradable plastic films stand as promising products to minimize plastic debris accumulation and reduce soil pollution. However, the effects of residues from traditional and biodegradable plastic films on the soil-plant system are not well studied. In this study, we used a controlled pot experiment to investigate the effects of macro- and micro- sized residues of low-density polyethylene and biodegradable plastic mulch films on the rhizosphere bacterial communities, rhizosphere volatile profiles and soil chemical properties. Interestingly, we identified significant effects of biodegradable plastic residues on the rhizosphere bacterial communities and on the blend of volatiles emitted in the rhizosphere. For example, in treatments with biodegradable plastics, bacteria genera like Bacillus and Variovorax were present in higher relative abundances and volatile compounds like dodecanal were exclusively produced in treatment with biodegradable microplastics. Furthermore, significant differences in soil pH, electrical conductivity and C:N ratio were observed across treatments. Our study provides evidence for both biotic and abiotic impacts of plastic residues on the soil-plant system, suggesting the urgent need for more research examining their environmental impacts on agroecosystems.", "keywords": ["2. Zero hunger", "Volatile Organic Compounds", "Bacteria", "Microplastics", "national", "Plan_S-Compliant_NO", "Biodegradable Plastics", "Biodegradable plastics", "01 natural sciences", "Rhizosphere microbiome", "Soil", "Polyethylene", "13. Climate action", "Rhizosphere", "Soil Pollutants", "Soil properties", "Volatile organic compounds", "Biomass", "Triticum", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/20.500.11755/c93c6b8f-a362-420e-8049-8e1577bb54db"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Hazardous%20Materials", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "20.500.11755/c93c6b8f-a362-420e-8049-8e1577bb54db", "name": "item", "description": "20.500.11755/c93c6b8f-a362-420e-8049-8e1577bb54db", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/20.500.11755/c93c6b8f-a362-420e-8049-8e1577bb54db"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-04-01T00:00:00Z"}}, {"id": "21.11116/0000-0006-8251-B", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-23T16:25:09Z", "type": "Journal Article", "created": "2020-06-05", "title": "An international laboratory comparison of dissolved organic matter composition by high resolution mass spectrometry: Are we getting the same answer?", "description": "Abstract

High\uffe2\uff80\uff90resolution mass spectrometry (HRMS) has become a vital tool for dissolved organic matter (DOM) characterization. The upward trend in HRMS analysis of DOM presents challenges in data comparison and interpretation among laboratories operating instruments with differing performance and user operating conditions. It is therefore essential that the community establishes metric ranges and compositional trends for data comparison with reference samples so that data can be robustly compared among research groups. To this end, four identically prepared DOM samples were each measured by 16 laboratories, using 17 commercially purchased instruments, using positive\uffe2\uff80\uff90ion and negative\uffe2\uff80\uff90ion mode electrospray ionization (ESI) HRMS analyses. The instruments identified ~1000 common ions in both negative\uffe2\uff80\uff90 and positive\uffe2\uff80\uff90ion modes over a wide range of m/z values and chemical space, as determined by van Krevelen diagrams. Calculated metrics of abundance\uffe2\uff80\uff90weighted average indices (H/C, O/C, aromaticity, and m/z) of the commonly detected ions showed that hydrogen saturation and aromaticity were consistent for each reference sample across the instruments, while average mass and oxygenation were more affected by differences in instrument type and settings. In this paper we present 32 metric values for future benchmarking. The metric values were obtained for the four different parameters from four samples in two ionization modes and can be used in future work to evaluate the performance of HRMS instruments.In the modern world, many people are changing old dietary and lifestyle habits to improve the quality of their living\uffe2\uff80\uff94to treat or just prevent possible diseases. The main goal of this pilot study was to assess the food and lifestyle impact on exhaled breath volatile organic compounds (VOCs) in various population groups. It was done by employing a recently validated portable membrane-inlet mass spectrometer\uffe2\uff80\uff94MIMS. Thus, the obtained results would also represent the additional confirmation for the employment of the new instrument in the breath analysis. The pilot study involved 151 participants across Europe, including people with overweight, obesity, type 2 diabetes mellitus, cardiovascular disease, people with poor-quality diet and professional athletes. Exhaled breath acetone, ethanol, isoprene, and n-pentane levels were determined in samples before the meal, and 120 min after the meal. Obtained basal ppbv values were mainly in accordance with previously reported, which confirms that MIMS instrument can be used in the breath analysis. Combining the quantified levels along with the information about the participants\uffe2\uff80\uff99 lifestyle habits collected via questionnaire, an assessment of the food and lifestyle impact was obtained. Notable alteration in examined VOC levels upon meal consumption was detected in more than 70% of all participants, with exception for isoprene, which was affected in about half of participants. Lifestyle parameters impact was examined using statistical analysis of variance (ANOVA) on ranks test. Statistically significant differences in basal breath VOC levels were observed among all examined population groups. Also, n-pentane and ethanol levels significantly differed in people of different ages, as well as acetone levels in people with different physical activity habits. These findings are promising for further, more focused research using MIMS technique in breath analysis.There is an increase in the adoption of biological solutions for plant production as a means of attaining sustainable agriculture. A detailed understanding of the influence of specific bioinoculants and their volatile metabolites on native soil and plant microbiomes can improve future microbiome management practices.

Results

Here, we examined the effect of bacterial inoculants and volatile compounds as individual and combined treatments on apple plant and soil microbiome. The study used specially designed microcosms that facilitated the separation of the different plant compartments. A compartment- and soil-specific effect of treatments on the native soil and plant microbiome was observed. The live bacterial inoculants as compared to their volatiles had a stronger effect on the plant and soil microbiome, particularly the root microbial community. The combined effect of bacterial inoculants was higher compared to volatiles (R2\uffe2\uff80\uff89=\uffe2\uff80\uff895% vs. 3%). Treatment-specific effects were observed, like the influence of 2-butanone on the phyllosphere bacterial diversity, and an increase in fungal richness in Serratia-treated soils.

Conclusions

Among the examined treatments, inoculation with bacteria compared to volatile metabolites induced more significant shifts within the plant and soil microbiome. This observation has implications regarding the merits of applying living microorganisms. The findings highlight the potential of microbiome management approaches for enhancing microbiota functions.

", "keywords": ["Microcosm experiments", "Environmental sciences", "Plant microbiome", "Research", "Sustainable agriculture", "GE1-350", "Volatile organic compounds", "Microbiology", "Bioinoculants", "QR1-502", "Amplicon sequencing"]}, "links": [{"href": "https://doi.org/PMC12096642"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Microbiome", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "PMC12096642", "name": "item", "description": "PMC12096642", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/PMC12096642"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2025-05-21T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Organic+compounds&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Organic+compounds&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Organic+compounds&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Organic+compounds&offset=35", "hreflang": "en-US"}], "numberMatched": 35, "numberReturned": 35, "distributedFeatures": [], "timeStamp": "2026-05-25T04:09:12.336148Z"}