Birgit Wild
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View article: Vegetation type influences particulate organic matter storage along a low Arctic vegetation gradient
Vegetation type influences particulate organic matter storage along a low Arctic vegetation gradient Open
Permafrost soils constitute a large part of the terrestrial carbon pool that is vulnerable to future climate warming. Continued warming of the low Arctic is also leading to the encroachment of large shrubs and trees into tundra ecosystems …
View article: Methane releases across the Laptev Sea signaled by time-integrated biomarkers of aerobic methane oxidation
Methane releases across the Laptev Sea signaled by time-integrated biomarkers of aerobic methane oxidation Open
Elevated methane concentrations in seawater have been reported over extensive areas of the East Siberian Arctic Seas, overlying thawing subsea permafrost. However, observed methane concentrations of the ephemeral seawater are highly variab…
View article: Land influence decouples benthic nutrient fluxes on the Siberian Arctic Ocean shelves
Land influence decouples benthic nutrient fluxes on the Siberian Arctic Ocean shelves Open
Land permafrost thaw transfers increasing amounts of organic matter and nutrients to the Arctic Ocean. These nutrients could stimulate primary production directly, or indirectly following remineralization in sediments. Projections of this …
View article: Environmental Gradients, Not Geographic Boundaries, Structure Meiofaunal Communities in Siberian Seas
Environmental Gradients, Not Geographic Boundaries, Structure Meiofaunal Communities in Siberian Seas Open
Meiofauna (all invertebrates smaller than 1 mm) are not only sensitive to environmental changes but also contribute significantly to nutrient cycling and energy transfer to higher trophic levels. Despite their importance, meiofauna distrib…
View article: Estimating Rhizosphere Priming in European Agricultural Soils
Estimating Rhizosphere Priming in European Agricultural Soils Open
The rhizosphere priming effect (RPE) is a key process where the mineralization of soil organic carbon (SOC) by microorganisms is modified by the presence and activity of plant roots compared to SOC mineralization on bare soil, increasing c…
View article: Mycorrhizal fungi enhance plant productivity but reduce soil organic matter stocks
Mycorrhizal fungi enhance plant productivity but reduce soil organic matter stocks Open
Mycorrhizal fungi and plants form symbiotic relationships that are essential for plant nutrition and carbon (C) storage in soil. Plants invest photosynthetically fixed C in their fungal partners in exchange for nutrients, especially nitrog…
View article: Death of a spruce: Soil decomposition processes under dying spruce trees at the forest-tundra ecotone
Death of a spruce: Soil decomposition processes under dying spruce trees at the forest-tundra ecotone Open
Arctic warming is facilitating the encroachment of trees into tundra landscapes. Trees at the forest-tundra ecotone are typically small, slow-growing and show high mortality rates. Tree necromass enters the soil as root, leaf and stem litt…
View article: Does a shift in vegetation type in high-latitude soils enhance soil organic matter destabilization from mineral-organic associations by organic acid exudation?
Does a shift in vegetation type in high-latitude soils enhance soil organic matter destabilization from mineral-organic associations by organic acid exudation? Open
Soil organic matter bound to soil minerals contribute to long-term soil carbon and nutrient sequestration by protecting organic matter from rapid microbial decomposition. However, the binding between minerals and organic matter can be weak…
View article: Effect of changing tundra vegetation on greenhouse gas emissions from Arctic permafrost soil
Effect of changing tundra vegetation on greenhouse gas emissions from Arctic permafrost soil Open
The Arctic is warming rapidly, causing permafrost thaw and vegetation shifts. As a result, shrubs and trees from lower latitudes are encroaching into the tundra, altering biomass distribution above and below ground. These changes impact gr…
View article: Shrub and tree encroachment alter plant-soil interactions in low Canadian Arctic
Shrub and tree encroachment alter plant-soil interactions in low Canadian Arctic Open
Rapid expansion of deciduous shrubs and evergreen trees on the Arctic tundra could induce large losses of soil carbon stocks through increased rhizosphere priming. Through the use of isotopic and molecular techniques, we investigated wheth…
View article: Terrestrial Organic Matter Contributes to CO<sub>2</sub> Production From Siberian Shelf Sediments
Terrestrial Organic Matter Contributes to CO<sub>2</sub> Production From Siberian Shelf Sediments Open
Arctic climate warming is causing permafrost thaw and erosion, which may lead to enhanced inputs of terrestrial organic matter into Arctic Ocean shelf sediments. Degradation of terrestrial organic matter in sediments might contribute to ca…
View article: Feedbacks From Young Permafrost Carbon Remobilization to the Deglacial Methane Rise
Feedbacks From Young Permafrost Carbon Remobilization to the Deglacial Methane Rise Open
The abrupt warming events punctuating the Termination 1 (about 11.7–18 ka Before Present, BP) were marked by sharp rises in the concentration of atmospheric methane (CH 4 ). The role of permafrost organic carbon (OC) in these rises is stil…
View article: Concentrations of methane, sulfate and lipid biomarkers and carbon isotope compositions in the sediments from the outer Laptev Sea
Concentrations of methane, sulfate and lipid biomarkers and carbon isotope compositions in the sediments from the outer Laptev Sea Open
The dataset contains the concentrations of methane, sulfate and microbial lipid biomarkers, and the carbon isotope composition of lipids in the sediment collected from the SWERUS-C3 expedition in 2014. The core sediment samples were from s…
View article: Land-derived organic matter drives benthic carbon and nutrient cycling on the Siberian Arctic Ocean shelves
Land-derived organic matter drives benthic carbon and nutrient cycling on the Siberian Arctic Ocean shelves Open
The Arctic Ocean is currently changing at a high rate, and projections over the next decades include an increase in water temperature and retreat of sea ice, as well as increased input of freshwater and land-derived material released by pe…
View article: Quantifying cross-shelf degradation of terrigenous organic carbon in Eurasian Arctic Shelf Seas
Quantifying cross-shelf degradation of terrigenous organic carbon in Eurasian Arctic Shelf Seas Open
The permafrost in the Northern Hemisphere holds approximately 50% of the global soil organic carbon, constituting a reservoir that is twice the size of atmospheric carbon storage. Permafrost carbon plays a vital role in governing the globa…
View article: Plant-specific rhizosphere influences on soil redox and soil biogeochemistry affect methane release from thawing permafrost soils
Plant-specific rhizosphere influences on soil redox and soil biogeochemistry affect methane release from thawing permafrost soils Open
Thawing of permafrost soils results in drastic changes in soil biogeochemistry and plant community composition. Specifically, the thawing process in subarctic regions can transform previously stable permafrost soils, home to slow growing, …
View article: The Role of Coastal Yedoma Deposits and Continental Shelf Sediments in the Arctic Ocean Silicon Cycle
The Role of Coastal Yedoma Deposits and Continental Shelf Sediments in the Arctic Ocean Silicon Cycle Open
The availability of silicon (Si) in the ocean plays an important role in regulating biogeochemical and ecological processes. The Si budget of the Arctic Ocean appears balanced, with inputs equivalent to outputs, though it is unclear how a …
View article: Concentrations of methane, sulfate and lipid biomarkers and carbon isotope values oof lipids in the sediments from the outer Laptev Sea
Concentrations of methane, sulfate and lipid biomarkers and carbon isotope values oof lipids in the sediments from the outer Laptev Sea Open
The dataset contains the concentrations of methane, sulfate and microbial lipid biomarkers, and the carbon isotope composition of lipids in the sediment collected from the SWERUS-C3 expedition in 2014. The core sediment samples were from s…
View article: How temperature and aridity drive lignin decomposition along a latitudinal transect in western Siberia
How temperature and aridity drive lignin decomposition along a latitudinal transect in western Siberia Open
Climate change drives a northward shift of biomes in high‐latitude regions. This might have consequences on the decomposition of plant litter entering the soil, including its lignin component, which is one of the most abundant components o…
View article: Arctic rooting depth distribution influences modelled carbon emissions but cannot be inferred from aboveground vegetation type
Arctic rooting depth distribution influences modelled carbon emissions but cannot be inferred from aboveground vegetation type Open
Summary The distribution of roots throughout the soil drives depth‐dependent plant–soil interactions and ecosystem processes, particularly in arctic tundra where plant biomass, is predominantly belowground. Vegetation is usually classified…
View article: Nitrous Oxide Dynamics in the Siberian Arctic Ocean and Vulnerability to Climate Change
Nitrous Oxide Dynamics in the Siberian Arctic Ocean and Vulnerability to Climate Change Open
Nitrous oxide (N 2 O) is a strong greenhouse gas and stratospheric ozone‐depleting substance. Around 20% of global emissions stem from the ocean, but current estimates and future projections are uncertain due to poor spatial coverage over …
View article: Circum-Arctic peat soils resist priming by plant-derived compounds
Circum-Arctic peat soils resist priming by plant-derived compounds Open
International audience
View article: Modelling plant-mycorrhizae interactions - a review
Modelling plant-mycorrhizae interactions - a review Open
Symbiotic associations between plants and soil microbes, especially mycorrhizal fungi, are fundamental for plant nutrition and belowground processes associated with carbon (C) transfer from plants to the rhizosphere and mycorrhizae are key…
View article: Rhizosphere priming in a warming Arctic: Are peatlands insusceptible?
Rhizosphere priming in a warming Arctic: Are peatlands insusceptible? Open
Rapid warming is currently accelerating Arctic carbon cycling, including increased permafrost thaw and CO2 production from soil organic matter decomposition, but also CO2 uptake by plants. Plants can additionally stimulate soil organic mat…
View article: Molecular‐Multiproxy Assessment of Land‐Derived Organic Matter Degradation Over Extensive Scales of the East Siberian Arctic Shelf Seas
Molecular‐Multiproxy Assessment of Land‐Derived Organic Matter Degradation Over Extensive Scales of the East Siberian Arctic Shelf Seas Open
Global warming triggers permafrost thaw, which increases the release of terrigenous organic matter (terr‐OM) to the Arctic Ocean by coastal erosion and rivers. Terrigenous OM degradation in the Arctic Ocean contributes to greenhouse gas em…
View article: Circum-Arctic release of terrestrial carbon varies between regions and sources
Circum-Arctic release of terrestrial carbon varies between regions and sources Open
Arctic change is expected to destabilize terrestrial carbon (terrOC) in soils and permafrost, leading to fluvial release, greenhouse gas emission and climate feedback. However, landscape heterogeneity and location-specific observations com…
View article: Stable carbon isotope data of enhanced dissolved methane in the East Siberian Arctic Shelf region
Stable carbon isotope data of enhanced dissolved methane in the East Siberian Arctic Shelf region Open
<p>During the past two decades, extensive ebullition and elevated methane concentrations in both seawater and atmosphere have been observed in East Siberian Arctic Shelf (ESAS) region. The relative contribution of the potential sourc…