Deep demersal fish communities respond rapidly to warming in a frontal region between Arctic and Atlantic waters

© 2022 The Authors. Global Change Biology published by John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 28(2022), 9 vom: 15. Mai, Seite 2979-2990
1. Verfasser: Emblemsvåg, Margrete (VerfasserIn)
Weitere Verfasser: Werner, Karl Michael, Núñez-Riboni, Ismael, Frelat, Romain, Torp Christensen, Helle, Fock, Heino O, Primicerio, Raul
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Arctic Atlantification East Greenland borealization deep sea ecosystem change fish communities fisheries
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520 |a © 2022 The Authors. Global Change Biology published by John Wiley & Sons Ltd. 
520 |a The assessment of climate impact on marine communities dwelling deeper than the well-studied shelf seas has been hampered by the lack of long-term data. For a long time, the prevailing expectation has been that thermal stability in deep ocean layers will delay ecosystem responses to warming. Few observational studies have challenged this view and indicated that deep organisms can respond exceptionally fast to physical change at the sea surface. To address the depth-specific impact of climate change, we investigated spatio-temporal changes in fish community structure along a bathymetry gradient of 150-1500 m between 1998 and 2016 in East Greenland. Here, the Arctic East Greenland Current and the Atlantic Irminger Current meet and mix, representing a sub-Arctic transition zone. We found the strongest signals of community reorganizations at depths between 350 and 1000 m and only weak responses in the shallowest and deepest regions. Changes were in synchrony with atmospheric warming, loss in sea ice and variability in physical sea surface conditions both within our study region and North of the Denmark Strait. These results suggest that interannual variability and long-term climate trends of the larger ecoregion can rapidly affect fish communities down to 1000-m depth through atmospheric ocean coupling and food web interactions 
650 4 |a Journal Article 
650 4 |a Arctic 
650 4 |a Atlantification 
650 4 |a East Greenland 
650 4 |a borealization 
650 4 |a deep sea 
650 4 |a ecosystem change 
650 4 |a fish communities 
650 4 |a fisheries 
700 1 |a Werner, Karl Michael  |e verfasserin  |4 aut 
700 1 |a Núñez-Riboni, Ismael  |e verfasserin  |4 aut 
700 1 |a Frelat, Romain  |e verfasserin  |4 aut 
700 1 |a Torp Christensen, Helle  |e verfasserin  |4 aut 
700 1 |a Fock, Heino O  |e verfasserin  |4 aut 
700 1 |a Primicerio, Raul  |e verfasserin  |4 aut 
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773 1 8 |g volume:28  |g year:2022  |g number:9  |g day:15  |g month:05  |g pages:2979-2990 
856 4 0 |u http://dx.doi.org/10.1111/gcb.16113  |3 Volltext 
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