Decadal changes in zooplankton of the Northeast U.S. continental shelf.

The abundance of the subarctic copepod, Calanus finmarchicus, and temperate, shelf copepod, Centropages typicus, was estimated from samples collected bi-monthly over the Northeast U.S. continental shelf (NEUS) from 1977-2010. Latitudinal variation in long term trends and seasonal patterns for the tw...

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Autores principales:	Hongsheng Bi, Rubao Ji, Hui Liu, Young-Heon Jo, Jonathan A Hare
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5139bd00c5384086b5a985f42f34f36e
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spelling	oai:doaj.org-article:5139bd00c5384086b5a985f42f34f36e2021-11-18T08:34:28ZDecadal changes in zooplankton of the Northeast U.S. continental shelf.1932-620310.1371/journal.pone.0087720https://doaj.org/article/5139bd00c5384086b5a985f42f34f36e2014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24498177/?tool=EBIhttps://doaj.org/toc/1932-6203The abundance of the subarctic copepod, Calanus finmarchicus, and temperate, shelf copepod, Centropages typicus, was estimated from samples collected bi-monthly over the Northeast U.S. continental shelf (NEUS) from 1977-2010. Latitudinal variation in long term trends and seasonal patterns for the two copepod species were examined for four sub-regions: the Gulf of Maine (GOM), Georges Bank (GB), Southern New England (SNE), and Mid-Atlantic Bight (MAB). Results suggested that there was significant difference in long term variation between northern region (GOM and GB), and the MAB for both species. C. finmarchicus generally peaked in May - June throughout the entire study region and Cen. typicus had a more complex seasonal pattern. Time series analysis revealed that the peak time for Cen. typicus switched from November - December to January - March after 1985 in the MAB. The long term abundance of C. finmarchicus showed more fluctuation in the MAB than the GOM and GB, whereas the long term abundance of Cen. typicus was more variable in the GB than other sub-regions. Alongshore transport was significantly correlated with the abundance of C. finmarchicus, i.e., more water from north, higher abundance for C. finmarchicus. The abundance of Cen. typicus showed positive relationship with the Gulf Stream north wall index (GSNWI) in the GOM and GB, but the GSNWI only explained 12-15% of variation in Cen. typicus abundance. In general, the alongshore current was negatively correlated with the GSNWI, suggesting that Cen. typicus is more abundant when advection from the north is less. However, the relationship between Cen. typicus and alongshore transport was not significant. The present study highlights the importance of spatial scales in the study of marine populations: observed long term changes in the northern region were different from the south for both species.Hongsheng BiRubao JiHui LiuYoung-Heon JoJonathan A HarePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 1, p e87720 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hongsheng Bi Rubao Ji Hui Liu Young-Heon Jo Jonathan A Hare Decadal changes in zooplankton of the Northeast U.S. continental shelf.
description	The abundance of the subarctic copepod, Calanus finmarchicus, and temperate, shelf copepod, Centropages typicus, was estimated from samples collected bi-monthly over the Northeast U.S. continental shelf (NEUS) from 1977-2010. Latitudinal variation in long term trends and seasonal patterns for the two copepod species were examined for four sub-regions: the Gulf of Maine (GOM), Georges Bank (GB), Southern New England (SNE), and Mid-Atlantic Bight (MAB). Results suggested that there was significant difference in long term variation between northern region (GOM and GB), and the MAB for both species. C. finmarchicus generally peaked in May - June throughout the entire study region and Cen. typicus had a more complex seasonal pattern. Time series analysis revealed that the peak time for Cen. typicus switched from November - December to January - March after 1985 in the MAB. The long term abundance of C. finmarchicus showed more fluctuation in the MAB than the GOM and GB, whereas the long term abundance of Cen. typicus was more variable in the GB than other sub-regions. Alongshore transport was significantly correlated with the abundance of C. finmarchicus, i.e., more water from north, higher abundance for C. finmarchicus. The abundance of Cen. typicus showed positive relationship with the Gulf Stream north wall index (GSNWI) in the GOM and GB, but the GSNWI only explained 12-15% of variation in Cen. typicus abundance. In general, the alongshore current was negatively correlated with the GSNWI, suggesting that Cen. typicus is more abundant when advection from the north is less. However, the relationship between Cen. typicus and alongshore transport was not significant. The present study highlights the importance of spatial scales in the study of marine populations: observed long term changes in the northern region were different from the south for both species.
format	article
author	Hongsheng Bi Rubao Ji Hui Liu Young-Heon Jo Jonathan A Hare
author_facet	Hongsheng Bi Rubao Ji Hui Liu Young-Heon Jo Jonathan A Hare
author_sort	Hongsheng Bi
title	Decadal changes in zooplankton of the Northeast U.S. continental shelf.
title_short	Decadal changes in zooplankton of the Northeast U.S. continental shelf.
title_full	Decadal changes in zooplankton of the Northeast U.S. continental shelf.
title_fullStr	Decadal changes in zooplankton of the Northeast U.S. continental shelf.
title_full_unstemmed	Decadal changes in zooplankton of the Northeast U.S. continental shelf.
title_sort	decadal changes in zooplankton of the northeast u.s. continental shelf.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/5139bd00c5384086b5a985f42f34f36e
work_keys_str_mv	AT hongshengbi decadalchangesinzooplanktonofthenortheastuscontinentalshelf AT rubaoji decadalchangesinzooplanktonofthenortheastuscontinentalshelf AT huiliu decadalchangesinzooplanktonofthenortheastuscontinentalshelf AT youngheonjo decadalchangesinzooplanktonofthenortheastuscontinentalshelf AT jonathanahare decadalchangesinzooplanktonofthenortheastuscontinentalshelf
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Decadal changes in zooplankton of the Northeast U.S. continental shelf.

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