Climate variability drives anchovies and sardines into the North and Baltic Seas
European anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) are southern, warm water species that prefer temperatures warmer than those found in boreal waters. After about 40 years of absence, they were again observed in the 1990s in increasing quantities in the North Sea and the Balt...
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ftpubman:oai:pure.mpg.de:item_2044803 2024-09-15T18:20:40+00:00 Climate variability drives anchovies and sardines into the North and Baltic Seas Alheit, J. Pohlmann, T. Casini, M. Greve, W. Hinrichs, R. Mathis, M. O'Driscoll, K. Vorberg, R. Wagner, C. 2012-04 http://hdl.handle.net/11858/00-001M-0000-001A-0575-3 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pocean.2011.11.015 http://hdl.handle.net/11858/00-001M-0000-001A-0575-3 Progress in Oceanography info:eu-repo/semantics/article 2012 ftpubman https://doi.org/10.1016/j.pocean.2011.11.015 2024-07-31T09:31:26Z European anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) are southern, warm water species that prefer temperatures warmer than those found in boreal waters. After about 40 years of absence, they were again observed in the 1990s in increasing quantities in the North Sea and the Baltic Sea. Whereas global warming probably played a role in these northward migrations, the North Atlantic Oscillation (NAO), the Atlantic Multidecadal Oscillation (AMO) and the contraction of the subpolar gyre were important influences. Sardine re-invaded the North Sea around 1990, probably mainly as a response to warmer temperatures associated with the strengthening of the NAO in the late 1980s. However, increasing numbers of anchovy eggs, larvae, juveniles and adults have been recorded only since the mid-1990s, when, particularly, summer temperatures started to increase. This is probably a result of the complex dynamics of ocean-atmosphere coupling involving changes in North Atlantic current structures, such as the contraction of the subpolar gyre, and dynamics of AMO. Apparently, climate variability drives anchovies and sardines into the North and Baltic Seas. Here, we elucidate the climatic background of the return of anchovies and sardines to the northern European shelf seas and the changes in the North Sea fish community in the mid-1990s in response to climate variability. (C) 2011 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper north atlantic current North Atlantic North Atlantic oscillation Max Planck Society: MPG.PuRe Progress in Oceanography 96 1 128 139 |
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Max Planck Society: MPG.PuRe |
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language |
English |
description |
European anchovy (Engraulis encrasicolus) and sardine (Sardina pilchardus) are southern, warm water species that prefer temperatures warmer than those found in boreal waters. After about 40 years of absence, they were again observed in the 1990s in increasing quantities in the North Sea and the Baltic Sea. Whereas global warming probably played a role in these northward migrations, the North Atlantic Oscillation (NAO), the Atlantic Multidecadal Oscillation (AMO) and the contraction of the subpolar gyre were important influences. Sardine re-invaded the North Sea around 1990, probably mainly as a response to warmer temperatures associated with the strengthening of the NAO in the late 1980s. However, increasing numbers of anchovy eggs, larvae, juveniles and adults have been recorded only since the mid-1990s, when, particularly, summer temperatures started to increase. This is probably a result of the complex dynamics of ocean-atmosphere coupling involving changes in North Atlantic current structures, such as the contraction of the subpolar gyre, and dynamics of AMO. Apparently, climate variability drives anchovies and sardines into the North and Baltic Seas. Here, we elucidate the climatic background of the return of anchovies and sardines to the northern European shelf seas and the changes in the North Sea fish community in the mid-1990s in response to climate variability. (C) 2011 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Alheit, J. Pohlmann, T. Casini, M. Greve, W. Hinrichs, R. Mathis, M. O'Driscoll, K. Vorberg, R. Wagner, C. |
spellingShingle |
Alheit, J. Pohlmann, T. Casini, M. Greve, W. Hinrichs, R. Mathis, M. O'Driscoll, K. Vorberg, R. Wagner, C. Climate variability drives anchovies and sardines into the North and Baltic Seas |
author_facet |
Alheit, J. Pohlmann, T. Casini, M. Greve, W. Hinrichs, R. Mathis, M. O'Driscoll, K. Vorberg, R. Wagner, C. |
author_sort |
Alheit, J. |
title |
Climate variability drives anchovies and sardines into the North and Baltic Seas |
title_short |
Climate variability drives anchovies and sardines into the North and Baltic Seas |
title_full |
Climate variability drives anchovies and sardines into the North and Baltic Seas |
title_fullStr |
Climate variability drives anchovies and sardines into the North and Baltic Seas |
title_full_unstemmed |
Climate variability drives anchovies and sardines into the North and Baltic Seas |
title_sort |
climate variability drives anchovies and sardines into the north and baltic seas |
publishDate |
2012 |
url |
http://hdl.handle.net/11858/00-001M-0000-001A-0575-3 |
genre |
north atlantic current North Atlantic North Atlantic oscillation |
genre_facet |
north atlantic current North Atlantic North Atlantic oscillation |
op_source |
Progress in Oceanography |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pocean.2011.11.015 http://hdl.handle.net/11858/00-001M-0000-001A-0575-3 |
op_doi |
https://doi.org/10.1016/j.pocean.2011.11.015 |
container_title |
Progress in Oceanography |
container_volume |
96 |
container_issue |
1 |
container_start_page |
128 |
op_container_end_page |
139 |
_version_ |
1810459060778041344 |