Zooplankton abundance trends on Georges Bank
Interannual trends in Georges Bank zooplankton abundance are described and related to variations in environmental variables for the period 1977–2004. Total zooplankton counts increased to above average levels in 1989 and stayed over or close to average through 2004. This analysis identified a group...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.492.1804 2023-05-15T15:48:00+02:00 Zooplankton abundance trends on Georges Bank Joseph Kane The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.492.1804 http://icesjms.oxfordjournals.org/content/64/5/909.full.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.492.1804 http://icesjms.oxfordjournals.org/content/64/5/909.full.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://icesjms.oxfordjournals.org/content/64/5/909.full.pdf advection Centropages typicus Georges Bank Metridia lucens salinity Temora longicornis trends zooplankton text ftciteseerx 2016-08-14T00:04:15Z Interannual trends in Georges Bank zooplankton abundance are described and related to variations in environmental variables for the period 1977–2004. Total zooplankton counts increased to above average levels in 1989 and stayed over or close to average through 2004. This analysis identified a group of taxa including Centropages typicus, Metridia lucens, and Temora longicornis that had similar interannual patterns of abundance. All these taxa increased sharply in the early 1990s and remained high through 2001. Some taxa declined sharply in 2002, others have continued elevated through 2004. Total zooplankton counts in the past two years were also boosted by a substantial increase in the abundance of the copepod Calanus finmarchicus. Evidence is presented that these changes may be related to variations in Scotian Shelf inflow, which freshened water on the Northeast US continental shelf, perhaps increasing both primary production and the influx of zooplankton into the region. There was a positive correlation between the biomass of pelagic predators and the abundance of several zooplankton taxa, suggesting that bottom-up processes and advective supply are the key factors that regulate the Georges Bank foodweb. Text Calanus finmarchicus Unknown |
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ftciteseerx |
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English |
topic |
advection Centropages typicus Georges Bank Metridia lucens salinity Temora longicornis trends zooplankton |
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advection Centropages typicus Georges Bank Metridia lucens salinity Temora longicornis trends zooplankton Joseph Kane Zooplankton abundance trends on Georges Bank |
topic_facet |
advection Centropages typicus Georges Bank Metridia lucens salinity Temora longicornis trends zooplankton |
description |
Interannual trends in Georges Bank zooplankton abundance are described and related to variations in environmental variables for the period 1977–2004. Total zooplankton counts increased to above average levels in 1989 and stayed over or close to average through 2004. This analysis identified a group of taxa including Centropages typicus, Metridia lucens, and Temora longicornis that had similar interannual patterns of abundance. All these taxa increased sharply in the early 1990s and remained high through 2001. Some taxa declined sharply in 2002, others have continued elevated through 2004. Total zooplankton counts in the past two years were also boosted by a substantial increase in the abundance of the copepod Calanus finmarchicus. Evidence is presented that these changes may be related to variations in Scotian Shelf inflow, which freshened water on the Northeast US continental shelf, perhaps increasing both primary production and the influx of zooplankton into the region. There was a positive correlation between the biomass of pelagic predators and the abundance of several zooplankton taxa, suggesting that bottom-up processes and advective supply are the key factors that regulate the Georges Bank foodweb. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Joseph Kane |
author_facet |
Joseph Kane |
author_sort |
Joseph Kane |
title |
Zooplankton abundance trends on Georges Bank |
title_short |
Zooplankton abundance trends on Georges Bank |
title_full |
Zooplankton abundance trends on Georges Bank |
title_fullStr |
Zooplankton abundance trends on Georges Bank |
title_full_unstemmed |
Zooplankton abundance trends on Georges Bank |
title_sort |
zooplankton abundance trends on georges bank |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.492.1804 http://icesjms.oxfordjournals.org/content/64/5/909.full.pdf |
genre |
Calanus finmarchicus |
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Calanus finmarchicus |
op_source |
http://icesjms.oxfordjournals.org/content/64/5/909.full.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.492.1804 http://icesjms.oxfordjournals.org/content/64/5/909.full.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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