Underwood, Graham and Michel, Christine and Meisterhans, Guillame and Niemi, Andrea and Belzile, Claude and Witt, Matthias and Dumbrell, Alex J and Koch, Boris P (2019) Organic matter from Artic sea ice loss alters bacterial community structure and function. Nature Climate Change, 9 (2). pp. 170-176. DOI https://doi.org/10.1038/s41558-018-0391-7
Underwood, Graham and Michel, Christine and Meisterhans, Guillame and Niemi, Andrea and Belzile, Claude and Witt, Matthias and Dumbrell, Alex J and Koch, Boris P (2019) Organic matter from Artic sea ice loss alters bacterial community structure and function. Nature Climate Change, 9 (2). pp. 170-176. DOI https://doi.org/10.1038/s41558-018-0391-7
Underwood, Graham and Michel, Christine and Meisterhans, Guillame and Niemi, Andrea and Belzile, Claude and Witt, Matthias and Dumbrell, Alex J and Koch, Boris P (2019) Organic matter from Artic sea ice loss alters bacterial community structure and function. Nature Climate Change, 9 (2). pp. 170-176. DOI https://doi.org/10.1038/s41558-018-0391-7
Abstract
Continuing losses of multi-year sea ice (MYI) across the Arctic are resulting in first-year ice (FYI) dominating the Arctic ice pack. Melting FYI provides a strong seasonal pulse of dissolved organic matter (DOM) into surface waters; however, the biological impact of this DOM input is unknown. Here we show that DOM additions cause significant and contrasting changes in under-ice bacterioplankton abundance, production and species composition. Utilization of DOM was influenced by molecular size, with 10-100 kDa and >100 kDa DOM fractions promoting rapid growth of particular taxa, while uptake of sulfur and nitrogen-rich low molecular weight organic compounds shifted bacterial community composition. These results demonstrate the ecological impacts of DOM released from melting FYI, with wideranging consequences for the cycling of organic matter across regions of the Arctic Ocean transitioning from multi-year to seasonal sea ice as the climate continues to warm.
Item Type: | Article |
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Subjects: | G Geography. Anthropology. Recreation > GC Oceanography G Geography. Anthropology. Recreation > GE Environmental Sciences |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Life Sciences, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 22 Jan 2019 19:04 |
Last Modified: | 16 May 2024 19:37 |
URI: | http://repository.essex.ac.uk/id/eprint/23635 |
Available files
Filename: Underwood et al MS version accepted for publication Nat Clim Change.pdf
Filename: Supplementary Information Underwood et al NCC FINAL accepted for publication.pdf