Long‐term changes in phytoplankton, zooplankton and salmon related to climate
Abstract Recently, large‐scale changes in the biogeography of calanoid copepod crustaceans have been detected in the northeastern North Atlantic Ocean and adjacent seas. Strong biogeographical shifts in all copepod assemblages were found with a northward extension of more than ° in latitude of warm‐...
Published in: | Global Change Biology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2003
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1046/j.1365-2486.2003.00632.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2486.2003.00632.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2486.2003.00632.x |
id |
crwiley:10.1046/j.1365-2486.2003.00632.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1046/j.1365-2486.2003.00632.x 2024-06-23T07:51:54+00:00 Long‐term changes in phytoplankton, zooplankton and salmon related to climate BEAUGRAND, GRÉGORY REID, PHILIP C. 2003 http://dx.doi.org/10.1046/j.1365-2486.2003.00632.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2486.2003.00632.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2486.2003.00632.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 9, issue 6, page 801-817 ISSN 1354-1013 1365-2486 journal-article 2003 crwiley https://doi.org/10.1046/j.1365-2486.2003.00632.x 2024-06-13T04:25:31Z Abstract Recently, large‐scale changes in the biogeography of calanoid copepod crustaceans have been detected in the northeastern North Atlantic Ocean and adjacent seas. Strong biogeographical shifts in all copepod assemblages were found with a northward extension of more than ° in latitude of warm‐water species associated with a decrease in the number of colder‐water species. These changes were attributed to regional increase in sea surface temperature. Here, we have extended these studies to examine long‐term changes in phytoplankton, zooplankton and salmon in relation to hydro‐meteorological forcing in the northeast Atlantic Ocean and adjacent seas. We found highly significant relationships between (1) long‐term changes in all three trophic levels, (2) sea surface temperature in the northeastern Atlantic, (3) Northern Hemisphere temperature and (4) the North Atlantic Oscillation. The similarities detected between plankton, salmon, temperature and hydro‐climatic parameters are also seen in their cyclical variability and in a stepwise shift that started after a pronounced increase in Northern Hemisphere Temperature anomalies at the end of the 1970s. All biological variables show a pronounced change which started after circa 1982 for euphausiids (decline), 1984 for the total abundance of small copepods (increase), 1986 for phytoplankton biomass (increase) and Calanus finmarchicus (decrease) and 1988 for salmon (decrease). This cascade of biological events led to an exceptional period, which is identified after 1986 to present and followed another shift in large‐scale hydro‐climatic variables and sea surface temperature. This regional temperature increase therefore appears to be an important parameter that is at present governing the dynamic equilibrium of northeast Atlantic pelagic ecosystems with possible consequences for biogeochemical processes and fisheries. Article in Journal/Newspaper Calanus finmarchicus North Atlantic North Atlantic oscillation Northeast Atlantic Copepods Wiley Online Library Global Change Biology 9 6 801 817 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Recently, large‐scale changes in the biogeography of calanoid copepod crustaceans have been detected in the northeastern North Atlantic Ocean and adjacent seas. Strong biogeographical shifts in all copepod assemblages were found with a northward extension of more than ° in latitude of warm‐water species associated with a decrease in the number of colder‐water species. These changes were attributed to regional increase in sea surface temperature. Here, we have extended these studies to examine long‐term changes in phytoplankton, zooplankton and salmon in relation to hydro‐meteorological forcing in the northeast Atlantic Ocean and adjacent seas. We found highly significant relationships between (1) long‐term changes in all three trophic levels, (2) sea surface temperature in the northeastern Atlantic, (3) Northern Hemisphere temperature and (4) the North Atlantic Oscillation. The similarities detected between plankton, salmon, temperature and hydro‐climatic parameters are also seen in their cyclical variability and in a stepwise shift that started after a pronounced increase in Northern Hemisphere Temperature anomalies at the end of the 1970s. All biological variables show a pronounced change which started after circa 1982 for euphausiids (decline), 1984 for the total abundance of small copepods (increase), 1986 for phytoplankton biomass (increase) and Calanus finmarchicus (decrease) and 1988 for salmon (decrease). This cascade of biological events led to an exceptional period, which is identified after 1986 to present and followed another shift in large‐scale hydro‐climatic variables and sea surface temperature. This regional temperature increase therefore appears to be an important parameter that is at present governing the dynamic equilibrium of northeast Atlantic pelagic ecosystems with possible consequences for biogeochemical processes and fisheries. |
format |
Article in Journal/Newspaper |
author |
BEAUGRAND, GRÉGORY REID, PHILIP C. |
spellingShingle |
BEAUGRAND, GRÉGORY REID, PHILIP C. Long‐term changes in phytoplankton, zooplankton and salmon related to climate |
author_facet |
BEAUGRAND, GRÉGORY REID, PHILIP C. |
author_sort |
BEAUGRAND, GRÉGORY |
title |
Long‐term changes in phytoplankton, zooplankton and salmon related to climate |
title_short |
Long‐term changes in phytoplankton, zooplankton and salmon related to climate |
title_full |
Long‐term changes in phytoplankton, zooplankton and salmon related to climate |
title_fullStr |
Long‐term changes in phytoplankton, zooplankton and salmon related to climate |
title_full_unstemmed |
Long‐term changes in phytoplankton, zooplankton and salmon related to climate |
title_sort |
long‐term changes in phytoplankton, zooplankton and salmon related to climate |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1046/j.1365-2486.2003.00632.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2486.2003.00632.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2486.2003.00632.x |
genre |
Calanus finmarchicus North Atlantic North Atlantic oscillation Northeast Atlantic Copepods |
genre_facet |
Calanus finmarchicus North Atlantic North Atlantic oscillation Northeast Atlantic Copepods |
op_source |
Global Change Biology volume 9, issue 6, page 801-817 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1365-2486.2003.00632.x |
container_title |
Global Change Biology |
container_volume |
9 |
container_issue |
6 |
container_start_page |
801 |
op_container_end_page |
817 |
_version_ |
1802643050168582144 |