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Implications of increasing Atlantic influence for Arctic microbial community structure

Implications of increasing Atlantic influence for Arctic microbial community structure
Implications of increasing Atlantic influence for Arctic microbial community structure
Increasing influence of Atlantic water in the Arctic Ocean has the potential to significantly impact regional water temperature and salinity. Here we use a rDNA barcoding approach to reveal how microbial communities are partitioned into distinct assemblages across a gradient of Atlantic-Polar Water influence in the Norwegian Sea. Data suggest that temperate adapted bacteria may replace cold water taxa under a future scenario of increasing Atlantic influence, but the eukaryote response is more complex. Some abundant eukaryotic cold water taxa could persist, while less abundant eukaryotic taxa may be replaced by warmer adapted temperate species. Furthermore, within lineages, different taxa display evidence of increased relative abundance in reaction to favourable conditions and we observed that rare microbial taxa are sample site rather than region specific. Our findings have significant implications for the vulnerability of polar associated community assemblages, which may change, impacting the ecosystem services they provide, under predicted increases of Atlantic mixing and warming within the Arctic region.
2045-2322
Carter-gates, Michael
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Balestreri, Cecilia
f8a1457c-3cae-40aa-b29b-9b900937dc6b
Thorpe, Sally E.
7b1d7a35-346a-414a-83ae-9717d9176de5
Cottier, Finlo
5aab99ad-620c-4918-b947-908643dc3b5e
Baylay, Alison
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Bibby, Thomas S.
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Moore, C. Mark
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Schroeder, Declan C.
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Carter-gates, Michael
6cd98da2-1595-4d46-890a-72c8b9a45965
Balestreri, Cecilia
f8a1457c-3cae-40aa-b29b-9b900937dc6b
Thorpe, Sally E.
7b1d7a35-346a-414a-83ae-9717d9176de5
Cottier, Finlo
5aab99ad-620c-4918-b947-908643dc3b5e
Baylay, Alison
08ea69f8-9910-4c8b-86a9-602e45b8a44e
Bibby, Thomas S.
e04ea079-dd90-4ead-9840-00882de27ebd
Moore, C. Mark
7ec80b7b-bedc-4dd5-8924-0f5d01927b12
Schroeder, Declan C.
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Carter-gates, Michael, Balestreri, Cecilia, Thorpe, Sally E., Cottier, Finlo, Baylay, Alison, Bibby, Thomas S., Moore, C. Mark and Schroeder, Declan C. (2020) Implications of increasing Atlantic influence for Arctic microbial community structure. Scientific Reports, 10 (1), [19262]. (doi:10.1038/s41598-020-76293-x).

Record type: Article

Abstract

Increasing influence of Atlantic water in the Arctic Ocean has the potential to significantly impact regional water temperature and salinity. Here we use a rDNA barcoding approach to reveal how microbial communities are partitioned into distinct assemblages across a gradient of Atlantic-Polar Water influence in the Norwegian Sea. Data suggest that temperate adapted bacteria may replace cold water taxa under a future scenario of increasing Atlantic influence, but the eukaryote response is more complex. Some abundant eukaryotic cold water taxa could persist, while less abundant eukaryotic taxa may be replaced by warmer adapted temperate species. Furthermore, within lineages, different taxa display evidence of increased relative abundance in reaction to favourable conditions and we observed that rare microbial taxa are sample site rather than region specific. Our findings have significant implications for the vulnerability of polar associated community assemblages, which may change, impacting the ecosystem services they provide, under predicted increases of Atlantic mixing and warming within the Arctic region.

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s41598-020-76293-x - Version of Record
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Accepted/In Press date: 19 October 2020
Published date: 6 November 2020

Identifiers

Local EPrints ID: 445155
URI: http://eprints.soton.ac.uk/id/eprint/445155
ISSN: 2045-2322
PURE UUID: f35eb9a5-9d92-4fed-a2c9-1e0667802c11

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Date deposited: 24 Nov 2020 17:30
Last modified: 24 Nov 2020 17:30

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Contributors

Author: Michael Carter-gates
Author: Cecilia Balestreri
Author: Sally E. Thorpe
Author: Finlo Cottier
Author: Alison Baylay
Author: Thomas S. Bibby
Author: C. Mark Moore
Author: Declan C. Schroeder

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