气候变化领域集成服务门户(CCPortal): Organic matter from Arctic sea-ice loss alters bacterial community structure and function

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DOI	10.1038/s41558-018-0391-7
	Organic matter from Arctic sea-ice loss alters bacterial community structure and function
	Underwood G.J.C.; Michel C.; Meisterhans G.; Niemi A.; Belzile C.; Witt M.; Dumbrell A.J.; Koch B.P.
发表日期	2019
ISSN	1758678X
卷号	9 期号:2
英文摘要	Continuing losses of multi-year sea ice (MYI) across the Arctic are causing first-year sea ice (FYI) to dominate 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 important 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 wide-ranging 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. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	abundance; bacterioplankton; bacterium; community structure; dissolved organic matter; functional role; organic matter; sea ice; surface water; Arctic Ocean; Bacteria (microorganisms)
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124469
作者单位	School of Biological Sciences, University of Essex, Colchester, United Kingdom; Fisheries and Oceans Canada, Freshwater Institute, Winnipeg, MB, Canada; Institut des Sciences de la Mer de Rimouski, Université du Québec à Rimouski, Rimouski, QC, Canada; Bruker Daltonik GmbH, Bremen, Germany; Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung, Bremerhaven, Germany; University of Applied Sciences, Bremerhaven, Germany
推荐引用方式 GB/T 7714	Underwood G.J.C.,Michel C.,Meisterhans G.,et al. Organic matter from Arctic sea-ice loss alters bacterial community structure and function[J],2019,9(2).
APA	Underwood G.J.C..,Michel C..,Meisterhans G..,Niemi A..,Belzile C..,...&Koch B.P..(2019).Organic matter from Arctic sea-ice loss alters bacterial community structure and function.Nature Climate Change,9(2).
MLA	Underwood G.J.C.,et al."Organic matter from Arctic sea-ice loss alters bacterial community structure and function".Nature Climate Change 9.2(2019).