A globally relevant stock of soil nitrogen in the Yedoma permafrost domain

Autor: Jens Strauss, Christina Biasi, Tina Sanders, Benjamin W. Abbott, Thomas Schneider von Deimling, Carolina Voigt, Matthias Winkel, Maija E. Marushchak, Dan Kou, Matthias Fuchs, Marcus A. Horn, Loeka L. Jongejans, Susanne Liebner, Jan Nitzbon, Lutz Schirrmeister, Katey Walter Anthony, Yuanhe Yang, Sebastian Zubrzycki, Sebastian Laboor, Claire Treat, Guido Grosse

Publikováno v: Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)

A climate sensitive permafrost region (Yedoma domain) was found to contain globally relevant N stock of >40 Gt nitrogen, of which 4 to 16 Gt of the N could become available by thaw until 2100. This study increases the current estimates by nearly 50%.

Externí odkaz: https://doaj.org/article/517b98a07184409196423a260041bebb

In-depth characterization of denitrifier communities across different soil ecosystems in the tundra

Autor: Igor S. Pessi, Sirja Viitamäki, Anna-Maria Virkkala, Eeva Eronen-Rasimus, Tom O. Delmont, Maija E. Marushchak, Miska Luoto, Jenni Hultman

Publikováno v: Environmental Microbiome, Vol 17, Iss 1, Pp 1-17 (2022)

Abstract Background In contrast to earlier assumptions, there is now mounting evidence for the role of tundra soils as important sources of the greenhouse gas nitrous oxide (N2O). However, the microorganisms involved in the cycling of N2O in this sys

Externí odkaz: https://doaj.org/article/74942e8dca5a4cadb2da2c467ea622ae

Thawing permafrost in retrogressive thaw slumps leads to higher N availability

Autor: Claudia Fiencke, Maija E. Marushchak, Rica Wegner, Christian Beer

Currently, 20% of the Northern Hemisphere is affected by thermokarst, with an increase expected in future. In particular, ice-rich Yedoma sediments are susceptible to abrupt thaw, which leads to the formation of retrogressive thaw slumps (RTS). These

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a2278af8be28f2435f82f643b69951ea
https://doi.org/10.5194/egusphere-egu23-15903

High-resolution spatial patterns and drivers of terrestrial ecosystem carbon dioxide, methane, and nitrous oxide fluxes in the tundra

Autor: Anna-Maria Virkkala, Pekka Niittynen, Julia Kemppinen, Maija E. Marushchak, Carolina Voigt, Geert Hensgens, Johanna Kerttula, Konsta Happonen, Vilna Tyystjärvi, Christina Biasi, Jenni Hultman, Janne Rinne, Miska Luoto

Arctic terrestrial greenhouse gas (GHG) fluxes of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) play an important role in the global GHG budget. However, these GHG fluxes are rarely studied simultaneously, and our understanding of the c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b32618623167abf2dd778c2dd97c501f
https://doi.org/10.5194/bg-2023-61

Sources of nitrous oxide and fate of mineral nitrogen in sub-Arctic permafrost peat soils

Autor: Alexander Novakovskiy, Tibisay Pérez, Christina Biasi, Tobias Rütting, Tatiana Trubnikova, Maija E. Marushchak, Dmitry Kaverin, Pertti J. Martikainen, J. Gil, Elizabeth M. Baggs

Publikováno v: Gil, J, Marushchak, M E, Rütting, T, Baggs, L, Pérez, T, Novakovskiy, A, Trubnikova, T, Kaverin, D, Martikainen, P J & Biasi, C 2022, ' Sources of nitrous oxide and fate of mineral nitrogen in sub-Arctic permafrost peat soils ', Biogeosciences, vol. 19, pp. 2683-2698 . https://doi.org/10.5194/bg-19-2683-2022

Nitrous oxide (N2O) emissions from permafrost-affected terrestrial ecosystems have received little attention, largely because they have been thought to be negligible. Recent studies, however, have shown that there are habitats in subarctic tundra emi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cc194cbfac4e82b4bdf64d7dcbcb7e9
https://hdl.handle.net/20.500.11820/90f7b118-b0c0-4dae-8e6f-3b86082d396b