Yedoma: Late Pleistocene ice-rich syngenetic permafrost of Beringia

L Schirrmeister, D Froese, S Wetterich, J Strauss… - 2024 - epic.awi.de
Yedoma is a permafrost deposit widely distributed across the Arctic and found exclusively
within the unglaciated regions in northern Siberia, Alaska, and the Yukon, which are the …

Microbiogeochemical traits to identify nitrogen hotspots in permafrost regions

C Fiencke, ME Marushchak, T Sanders, R Wegner… - Nitrogen, 2022 - mdpi.com
Permafrost-affected tundra soils are large carbon (C) and nitrogen (N) reservoirs. However,
N is largely bound in soil organic matter (SOM), and ecosystems generally have low N …

Patterns and drivers of anaerobic nitrogen transformations in sediments of thermokarst lakes

C Mao, Y Song, Y Peng, L Kang, Z Li… - Global Change …, 2023 - Wiley Online Library
Significant attention has been given to the way in which the soil nitrogen (N) cycle responds
to permafrost thaw in recent years, yet little is known about anaerobic N transformations in …

Decadal increases in carbon uptake offset by respiratory losses across northern permafrost ecosystems

CR See, AM Virkkala, SM Natali, BM Rogers… - Nature Climate …, 2024 - nature.com
Tundra and boreal ecosystems encompass the northern circumpolar permafrost region and
are experiencing rapid environmental change with important implications for the global …

Post-drainage vegetation, microtopography and organic matter in Arctic drained lake basins

J Wolter, BM Jones, M Fuchs, A Breen… - Environmental …, 2024 - iopscience.iop.org
Wetlands in Arctic drained lake basins (DLBs) have a high potential for carbon storage in
vegetation and peat as well as for elevated greenhouse gas emissions. However, the …

More snow accelerates legacy carbon emissions from Arctic permafrost

SA Pedron, RG Jespersen, X Xu, Y Khazindar… - AGU …, 2023 - Wiley Online Library
Snow is critically important to the energy budget, biogeochemistry, ecology, and people of
the Arctic. While climate change continues to shorten the duration of the snow cover period …

Greater regulation of permafrost organic matter composition by enzymes and redox than temperature

L Lynch, A Margenot, F Calderon… - Soil Biology and …, 2023 - Elsevier
Accelerating permafrost thaw across high-latitude ecosystems increases organic matter
(OM) availability to soil microorganisms. The chemical composition of permafrost-derived …

Metal mobilization from thawing permafrost to aquatic ecosystems is driving rusting of Arctic streams

JA O'Donnell, MP Carey, JC Koch… - … Earth & Environment, 2024 - nature.com
Climate change in the Arctic is altering watershed hydrologic processes and
biogeochemistry. Here, we present an emergent threat to Arctic watersheds based on …

Stream nitrogen concentrations across Arctic vegetation gradients

CMH Holmboe, A Pastor, T Riis - Global Biogeochemical …, 2024 - Wiley Online Library
The Arctic is experiencing dramatic climate‐induced changes, which could have substantial
consequences for nutrient export from land to streams and, thus, in‐stream nutrient …

Arctic freshwater sources and ocean mixing relationships revealed with seawater isotopic tracing

BG Kopec, ES Klein, GC Feldman… - Journal of …, 2024 - Wiley Online Library
Abstract The Arctic Ocean and adjacent seas are undergoing increased freshwater influx
due to enhanced glacial and sea ice melt, precipitation, and runoff. Accurate delineation of …