The occurrence of Calanus finmarchicus (Gunnerus) and Calanus helgolandicus (Claus) in the western Irish Sea
The seasonal abundance of Calanus finmarchicus and Calanus helgolandicus in the North Channel and stratified region of the western Irish Sea is reviewed using data collected between 1992 and 1996. Both species occur in the western Irish Sea, but were more abundant in the stratified region during spr...
Published in: | Journal of Plankton Research |
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Oxford University Press
1997
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fthighwire:oai:open-archive.highwire.org:plankt:19/8/1175 2023-05-15T15:47:53+02:00 The occurrence of Calanus finmarchicus (Gunnerus) and Calanus helgolandicus (Claus) in the western Irish Sea Gowen, R.J. Dickey-Collas, M. McCullough, G. 1997-08-01 00:00:00.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/19/8/1175 https://doi.org/10.1093/plankt/19.8.1175 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/19/8/1175 http://dx.doi.org/10.1093/plankt/19.8.1175 Copyright (C) 1997, Oxford University Press ORIGINAL ARTICLES TEXT 1997 fthighwire https://doi.org/10.1093/plankt/19.8.1175 2007-06-23T18:54:42Z The seasonal abundance of Calanus finmarchicus and Calanus helgolandicus in the North Channel and stratified region of the western Irish Sea is reviewed using data collected between 1992 and 1996. Both species occur in the western Irish Sea, but were more abundant in the stratified region during spring. Increased abundance during May/June was attributed to an increase in copepodite stages. Calanus helgolandicus dominated in both regions, exhibiting spring and autumn peaks in abundance in the stratified region. It is argued that the presence of ripe females and naupliar stages in the stratified region is evidence of an in situ breeding population, rather than advection of individuals from population centres outside the Irish Sea. The lack of geographical separation of the two species in the western Irish sea, and reports that both species occur in the Celtic Sea and Malin Shelf, limit the use of either species as indicators of exchange processes between the Irish Sea and neighbouring waters. Text Calanus finmarchicus HighWire Press (Stanford University) Journal of Plankton Research 19 8 1175 1182 |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
ORIGINAL ARTICLES |
spellingShingle |
ORIGINAL ARTICLES Gowen, R.J. Dickey-Collas, M. McCullough, G. The occurrence of Calanus finmarchicus (Gunnerus) and Calanus helgolandicus (Claus) in the western Irish Sea |
topic_facet |
ORIGINAL ARTICLES |
description |
The seasonal abundance of Calanus finmarchicus and Calanus helgolandicus in the North Channel and stratified region of the western Irish Sea is reviewed using data collected between 1992 and 1996. Both species occur in the western Irish Sea, but were more abundant in the stratified region during spring. Increased abundance during May/June was attributed to an increase in copepodite stages. Calanus helgolandicus dominated in both regions, exhibiting spring and autumn peaks in abundance in the stratified region. It is argued that the presence of ripe females and naupliar stages in the stratified region is evidence of an in situ breeding population, rather than advection of individuals from population centres outside the Irish Sea. The lack of geographical separation of the two species in the western Irish sea, and reports that both species occur in the Celtic Sea and Malin Shelf, limit the use of either species as indicators of exchange processes between the Irish Sea and neighbouring waters. |
format |
Text |
author |
Gowen, R.J. Dickey-Collas, M. McCullough, G. |
author_facet |
Gowen, R.J. Dickey-Collas, M. McCullough, G. |
author_sort |
Gowen, R.J. |
title |
The occurrence of Calanus finmarchicus (Gunnerus) and Calanus helgolandicus (Claus) in the western Irish Sea |
title_short |
The occurrence of Calanus finmarchicus (Gunnerus) and Calanus helgolandicus (Claus) in the western Irish Sea |
title_full |
The occurrence of Calanus finmarchicus (Gunnerus) and Calanus helgolandicus (Claus) in the western Irish Sea |
title_fullStr |
The occurrence of Calanus finmarchicus (Gunnerus) and Calanus helgolandicus (Claus) in the western Irish Sea |
title_full_unstemmed |
The occurrence of Calanus finmarchicus (Gunnerus) and Calanus helgolandicus (Claus) in the western Irish Sea |
title_sort |
occurrence of calanus finmarchicus (gunnerus) and calanus helgolandicus (claus) in the western irish sea |
publisher |
Oxford University Press |
publishDate |
1997 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/19/8/1175 https://doi.org/10.1093/plankt/19.8.1175 |
genre |
Calanus finmarchicus |
genre_facet |
Calanus finmarchicus |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/19/8/1175 http://dx.doi.org/10.1093/plankt/19.8.1175 |
op_rights |
Copyright (C) 1997, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/19.8.1175 |
container_title |
Journal of Plankton Research |
container_volume |
19 |
container_issue |
8 |
container_start_page |
1175 |
op_container_end_page |
1182 |
_version_ |
1766382855868383232 |