North Atlantic climatic signals and the plankton of the European Continental Shelf
Climatic variability on the European Continental Shelf is dominated by events over the North Atlantic Ocean, and in particular by the North Atlantic Oscillation (NAO). The NAO is essentially a winter phenomenon, and its effects will be felt most strongly by populations for which winter conditions ar...
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ftplymouthml:oai:plymsea.ac.uk:3935 2023-05-15T15:48:04+02:00 North Atlantic climatic signals and the plankton of the European Continental Shelf Taylor, AH 2002 http://plymsea.ac.uk/id/eprint/3935/ unknown ELSEVIER SCIENCE BV Taylor, AH. 2002 North Atlantic climatic signals and the plankton of the European Continental Shelf. In: Symposium on Chaning States of North Atlantic Large Marine Ecosystems (LMEs), BERGEN, NORWAY, JUN, 1999. ELSEVIER SCIENCE BV, Mar-26. Ecology and Environment Marine Sciences Publication - Conference Item PeerReviewed 2002 ftplymouthml 2022-09-13T05:47:31Z Climatic variability on the European Continental Shelf is dominated by events over the North Atlantic Ocean, and in particular by the North Atlantic Oscillation (NAO). The NAO is essentially a winter phenomenon, and its effects will be felt most strongly by populations for which winter conditions are critical. One example is the copepod Calanus finmarchicus, whose northern North Sea populations overwinter at depth in the North Atlantic. Its annual abundance in this region is strongly dependent on water transports at the end of the winter, and hence on the NAO index. Variations in the NAO give rise to changes in the circulation of the North Atlantic Ocean, with additional perturbations arising from El Ni (n) over tildeo - Southern Oscillation (ENSO) events in the Pacific, and these changes can be delayed by several years because of the adjustment time of the ocean circulation. One measure of the circulation is the latitude of the north wall of the Gulf Stream (GSNW index). Interannual variations in the plankton of the Shelf Seas show strong correlations with the fluctuations of the GSNW index, which are the result of Atlantic-wide atmospheric processes. These associations imply that the interannual variations are climatically induced rather than due to natural fluctuations of the marine ecosystem, and that the zooplankton populations have not been significantly affected by anthropogenic processes such as nutrient enrichment or fishing pressure. While the GSNW index represents a response to atmospheric changes over two or more years, the zooplankton populations correlated with it have generation times of a few weeks. The simplest explanation for the associations between the zooplankton and the GSNW index is that the plankton are responding to weather patterns propagating downstream from the Gulf Stream system. It seems that these meteorological processes operate in the spring. Although it has been suggested that there was a regime shift in the North Sea in the late 1980s, examination of the time-series by the ... Text Calanus finmarchicus North Atlantic North Atlantic oscillation Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) Pacific |
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Plymouth Marine Science Electronic Archive (PlyMSEA - Plymouth Marine Laboratory, PML) |
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Ecology and Environment Marine Sciences |
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Ecology and Environment Marine Sciences Taylor, AH North Atlantic climatic signals and the plankton of the European Continental Shelf |
topic_facet |
Ecology and Environment Marine Sciences |
description |
Climatic variability on the European Continental Shelf is dominated by events over the North Atlantic Ocean, and in particular by the North Atlantic Oscillation (NAO). The NAO is essentially a winter phenomenon, and its effects will be felt most strongly by populations for which winter conditions are critical. One example is the copepod Calanus finmarchicus, whose northern North Sea populations overwinter at depth in the North Atlantic. Its annual abundance in this region is strongly dependent on water transports at the end of the winter, and hence on the NAO index. Variations in the NAO give rise to changes in the circulation of the North Atlantic Ocean, with additional perturbations arising from El Ni (n) over tildeo - Southern Oscillation (ENSO) events in the Pacific, and these changes can be delayed by several years because of the adjustment time of the ocean circulation. One measure of the circulation is the latitude of the north wall of the Gulf Stream (GSNW index). Interannual variations in the plankton of the Shelf Seas show strong correlations with the fluctuations of the GSNW index, which are the result of Atlantic-wide atmospheric processes. These associations imply that the interannual variations are climatically induced rather than due to natural fluctuations of the marine ecosystem, and that the zooplankton populations have not been significantly affected by anthropogenic processes such as nutrient enrichment or fishing pressure. While the GSNW index represents a response to atmospheric changes over two or more years, the zooplankton populations correlated with it have generation times of a few weeks. The simplest explanation for the associations between the zooplankton and the GSNW index is that the plankton are responding to weather patterns propagating downstream from the Gulf Stream system. It seems that these meteorological processes operate in the spring. Although it has been suggested that there was a regime shift in the North Sea in the late 1980s, examination of the time-series by the ... |
format |
Text |
author |
Taylor, AH |
author_facet |
Taylor, AH |
author_sort |
Taylor, AH |
title |
North Atlantic climatic signals and the plankton of the European Continental Shelf |
title_short |
North Atlantic climatic signals and the plankton of the European Continental Shelf |
title_full |
North Atlantic climatic signals and the plankton of the European Continental Shelf |
title_fullStr |
North Atlantic climatic signals and the plankton of the European Continental Shelf |
title_full_unstemmed |
North Atlantic climatic signals and the plankton of the European Continental Shelf |
title_sort |
north atlantic climatic signals and the plankton of the european continental shelf |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2002 |
url |
http://plymsea.ac.uk/id/eprint/3935/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Calanus finmarchicus North Atlantic North Atlantic oscillation |
genre_facet |
Calanus finmarchicus North Atlantic North Atlantic oscillation |
op_relation |
Taylor, AH. 2002 North Atlantic climatic signals and the plankton of the European Continental Shelf. In: Symposium on Chaning States of North Atlantic Large Marine Ecosystems (LMEs), BERGEN, NORWAY, JUN, 1999. ELSEVIER SCIENCE BV, Mar-26. |
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1766383069279813632 |