East-west comparison of the zooplankton community in the subarctic Pacific during summers of 2003-2006
The subarctic Pacific is known to have east–west gradients in the oceanic environment and phytoplankton community. The western subarctic Pacific is characterized by low temperature and high chlorophyll a (Chl a ) while the eastern region by high temperature and low Chl a . Although there is little i...
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fthighwire:oai:open-archive.highwire.org:plankt:fbq101v1 2023-05-15T18:27:38+02:00 East-west comparison of the zooplankton community in the subarctic Pacific during summers of 2003-2006 Saito, Rui Yamaguchi, Atsushi Saitoh, Sei-Ichi Kuma, Kenshi Imai, Ichiro 2010-09-01 04:06:09.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/fbq101v1 https://doi.org/10.1093/plankt/fbq101 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/fbq101v1 http://dx.doi.org/10.1093/plankt/fbq101 Copyright (C) 2010, Oxford University Press Article TEXT 2010 fthighwire https://doi.org/10.1093/plankt/fbq101 2016-11-16T18:35:49Z The subarctic Pacific is known to have east–west gradients in the oceanic environment and phytoplankton community. The western subarctic Pacific is characterized by low temperature and high chlorophyll a (Chl a ) while the eastern region by high temperature and low Chl a . Although there is little information on the differences in the zooplankton community between the eastern and western subarctic Pacific, the gradients in the oceanographic environment and phytoplankton community may markedly affect the zooplankton community in this region. The aim of this study is to clarify east–west differences in the subarctic Pacific zooplankton community. Zooplankton were sampled at stations along the 165°E line (western subarctic Pacific from 41°30′N to 49°30′N) and 165°W line (eastern subarctic Pacific from 39°N to 53°30′N) using 335 and 100 µm mesh size Twin NORPAC net during the summers of 2003–2006. East–west differences in the zooplankton community were characterized as: (i) greater total zooplankton abundance in the west and (ii) larger body size of calanoid copepods of the same copepodid stage in the west. Differences in east–west zooplankton abundances are attributed to differences in the magnitude of primary production (high in the west) and the size of primary producers (large in the west). Larger body sizes of calanoid copepods in the west are attributed to the lower temperature. Thus, differences in zooplankton abundance and body size are concluded to be due to east–west gradients in the oceanographic environment and phytoplankton community. Text Subarctic Copepods HighWire Press (Stanford University) Pacific Journal of Plankton Research 33 1 145 160 |
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English |
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Article Saito, Rui Yamaguchi, Atsushi Saitoh, Sei-Ichi Kuma, Kenshi Imai, Ichiro East-west comparison of the zooplankton community in the subarctic Pacific during summers of 2003-2006 |
topic_facet |
Article |
description |
The subarctic Pacific is known to have east–west gradients in the oceanic environment and phytoplankton community. The western subarctic Pacific is characterized by low temperature and high chlorophyll a (Chl a ) while the eastern region by high temperature and low Chl a . Although there is little information on the differences in the zooplankton community between the eastern and western subarctic Pacific, the gradients in the oceanographic environment and phytoplankton community may markedly affect the zooplankton community in this region. The aim of this study is to clarify east–west differences in the subarctic Pacific zooplankton community. Zooplankton were sampled at stations along the 165°E line (western subarctic Pacific from 41°30′N to 49°30′N) and 165°W line (eastern subarctic Pacific from 39°N to 53°30′N) using 335 and 100 µm mesh size Twin NORPAC net during the summers of 2003–2006. East–west differences in the zooplankton community were characterized as: (i) greater total zooplankton abundance in the west and (ii) larger body size of calanoid copepods of the same copepodid stage in the west. Differences in east–west zooplankton abundances are attributed to differences in the magnitude of primary production (high in the west) and the size of primary producers (large in the west). Larger body sizes of calanoid copepods in the west are attributed to the lower temperature. Thus, differences in zooplankton abundance and body size are concluded to be due to east–west gradients in the oceanographic environment and phytoplankton community. |
format |
Text |
author |
Saito, Rui Yamaguchi, Atsushi Saitoh, Sei-Ichi Kuma, Kenshi Imai, Ichiro |
author_facet |
Saito, Rui Yamaguchi, Atsushi Saitoh, Sei-Ichi Kuma, Kenshi Imai, Ichiro |
author_sort |
Saito, Rui |
title |
East-west comparison of the zooplankton community in the subarctic Pacific during summers of 2003-2006 |
title_short |
East-west comparison of the zooplankton community in the subarctic Pacific during summers of 2003-2006 |
title_full |
East-west comparison of the zooplankton community in the subarctic Pacific during summers of 2003-2006 |
title_fullStr |
East-west comparison of the zooplankton community in the subarctic Pacific during summers of 2003-2006 |
title_full_unstemmed |
East-west comparison of the zooplankton community in the subarctic Pacific during summers of 2003-2006 |
title_sort |
east-west comparison of the zooplankton community in the subarctic pacific during summers of 2003-2006 |
publisher |
Oxford University Press |
publishDate |
2010 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/fbq101v1 https://doi.org/10.1093/plankt/fbq101 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic Copepods |
genre_facet |
Subarctic Copepods |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/fbq101v1 http://dx.doi.org/10.1093/plankt/fbq101 |
op_rights |
Copyright (C) 2010, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/fbq101 |
container_title |
Journal of Plankton Research |
container_volume |
33 |
container_issue |
1 |
container_start_page |
145 |
op_container_end_page |
160 |
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1766209761272922112 |