Calanus and environment in the eastern North Atlantic. 1. Spatial and temporal patterns of C. finmarchicus and C. helgolandicus
Spatial and temporal patterns of Calanusfinmarchicus and C. helgolandicus (Copepoda, Calanoida) were investigated in the northeast Atlantic and the North Sea from 1962 to 1992. The seasonal cycle of C.finmarchicus is characterised by a single peak of abundance in spring, whereas the seasonal cycle o...
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ftarchimer:oai:archimer.ifremer.fr:14458 2023-05-15T17:33:45+02:00 Calanus and environment in the eastern North Atlantic. 1. Spatial and temporal patterns of C. finmarchicus and C. helgolandicus Planque, Benjamin Fromentin, Jean-marc 1996-04 application/pdf https://archimer.ifremer.fr/doc/00033/14458/11760.pdf https://archimer.ifremer.fr/doc/00033/14458/ eng eng Inter-Research https://archimer.ifremer.fr/doc/00033/14458/11760.pdf https://archimer.ifremer.fr/doc/00033/14458/ Inter-Research 1996 info:eu-repo/semantics/openAccess restricted use Marine Ecology Progress Series (0171-8630) (Inter-Research), 1996-04 , Vol. 134 , P. 101-109 text Publication info:eu-repo/semantics/article 1996 ftarchimer 2021-09-23T20:19:19Z Spatial and temporal patterns of Calanusfinmarchicus and C. helgolandicus (Copepoda, Calanoida) were investigated in the northeast Atlantic and the North Sea from 1962 to 1992. The seasonal cycle of C.finmarchicus is characterised by a single peak of abundance in spring, whereas the seasonal cycle of C. helgolandicus shows 2 abundance maxima, one in spring and one in autumn. The former species mainly occurs in northern regions (limited by the 55*N parallel in the North Sea and by the 50*N parallel in the open ocean). The latter species shows 2 types of spatial patterns, occurring in the Celtic Sea during spring and in the Celtic Sea plus the North Sea in autumn. Differences in seasonal spatial patterns of Calanus species may result from different responses to the environment, ultimately due to different life cycle strategies, different vertical distributions, opposite temperature affinities and interspecific competition. Futhermore, results reveal that annual means of abundance are closely related to annual maxima and to spatial extensions of the species. It also appears that the long-term trends of the 2 Calanus species are opposite: C. finmarchicus shows a clear downward trend in abundance, while C. helgolandicus presents an upward one. Article in Journal/Newspaper North Atlantic Northeast Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
Spatial and temporal patterns of Calanusfinmarchicus and C. helgolandicus (Copepoda, Calanoida) were investigated in the northeast Atlantic and the North Sea from 1962 to 1992. The seasonal cycle of C.finmarchicus is characterised by a single peak of abundance in spring, whereas the seasonal cycle of C. helgolandicus shows 2 abundance maxima, one in spring and one in autumn. The former species mainly occurs in northern regions (limited by the 55*N parallel in the North Sea and by the 50*N parallel in the open ocean). The latter species shows 2 types of spatial patterns, occurring in the Celtic Sea during spring and in the Celtic Sea plus the North Sea in autumn. Differences in seasonal spatial patterns of Calanus species may result from different responses to the environment, ultimately due to different life cycle strategies, different vertical distributions, opposite temperature affinities and interspecific competition. Futhermore, results reveal that annual means of abundance are closely related to annual maxima and to spatial extensions of the species. It also appears that the long-term trends of the 2 Calanus species are opposite: C. finmarchicus shows a clear downward trend in abundance, while C. helgolandicus presents an upward one. |
format |
Article in Journal/Newspaper |
author |
Planque, Benjamin Fromentin, Jean-marc |
spellingShingle |
Planque, Benjamin Fromentin, Jean-marc Calanus and environment in the eastern North Atlantic. 1. Spatial and temporal patterns of C. finmarchicus and C. helgolandicus |
author_facet |
Planque, Benjamin Fromentin, Jean-marc |
author_sort |
Planque, Benjamin |
title |
Calanus and environment in the eastern North Atlantic. 1. Spatial and temporal patterns of C. finmarchicus and C. helgolandicus |
title_short |
Calanus and environment in the eastern North Atlantic. 1. Spatial and temporal patterns of C. finmarchicus and C. helgolandicus |
title_full |
Calanus and environment in the eastern North Atlantic. 1. Spatial and temporal patterns of C. finmarchicus and C. helgolandicus |
title_fullStr |
Calanus and environment in the eastern North Atlantic. 1. Spatial and temporal patterns of C. finmarchicus and C. helgolandicus |
title_full_unstemmed |
Calanus and environment in the eastern North Atlantic. 1. Spatial and temporal patterns of C. finmarchicus and C. helgolandicus |
title_sort |
calanus and environment in the eastern north atlantic. 1. spatial and temporal patterns of c. finmarchicus and c. helgolandicus |
publisher |
Inter-Research |
publishDate |
1996 |
url |
https://archimer.ifremer.fr/doc/00033/14458/11760.pdf https://archimer.ifremer.fr/doc/00033/14458/ |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_source |
Marine Ecology Progress Series (0171-8630) (Inter-Research), 1996-04 , Vol. 134 , P. 101-109 |
op_relation |
https://archimer.ifremer.fr/doc/00033/14458/11760.pdf https://archimer.ifremer.fr/doc/00033/14458/ |
op_rights |
Inter-Research 1996 info:eu-repo/semantics/openAccess restricted use |
_version_ |
1766132352201785344 |