1 Does Positioning of the North Pacific Current Affect Downstream Ecosystem Productivity?
[1] Fluctuations in the positioning of major ocean currents can influence ecosystem dynamics, but previously the technology has been lacking to make direct observational assessments. Here, we test the hypothesis that positioning of the North Pacific Current (NPC) is related to biological attributes...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.224.2025 2023-05-15T18:28:22+02:00 1 Does Positioning of the North Pacific Current Affect Downstream Ecosystem Productivity? William J. Sydeman Sarah Ann Thompson John C. Field William T. Peterson Ronald W Howard J. Freel Steven J. Bograd Ryan R. Rykaczewski The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.224.2025 http://www.gfdl.gov/cms-filesystem-action/user_files/rrr/sydeman_et_al_grl_2011_draft.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.224.2025 http://www.gfdl.gov/cms-filesystem-action/user_files/rrr/sydeman_et_al_grl_2011_draft.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.gfdl.gov/cms-filesystem-action/user_files/rrr/sydeman_et_al_grl_2011_draft.pdf text ftciteseerx 2016-01-07T18:24:56Z [1] Fluctuations in the positioning of major ocean currents can influence ecosystem dynamics, but previously the technology has been lacking to make direct observational assessments. Here, we test the hypothesis that positioning of the North Pacific Current (NPC) is related to biological attributes of the central-northern California Current Ecosystem (CCE). To test this hypothesis we use newly available data from the Argo array and compare it with a suite of well-known ecosystem indicators over 6 years, 2002 through 2007. We found increased biomass and productivity when the NPC was shifted poleward, and suggest that positioning influences advective transport of nutrients and perhaps key planktonic organisms from the subarctic domain thereby enhancing mid to upper trophic level species. This study is significant because climate change is predicted to cause poleward shifts in the westerlies that drive ocean currents and positioning of large marine gyre systems. Rather than reducing ecosystem productivity, poleward shifts in positioning of the NPC may be beneficial for many species of the central-northern CCE. 3 1. Text Subarctic Unknown Pacific |
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description |
[1] Fluctuations in the positioning of major ocean currents can influence ecosystem dynamics, but previously the technology has been lacking to make direct observational assessments. Here, we test the hypothesis that positioning of the North Pacific Current (NPC) is related to biological attributes of the central-northern California Current Ecosystem (CCE). To test this hypothesis we use newly available data from the Argo array and compare it with a suite of well-known ecosystem indicators over 6 years, 2002 through 2007. We found increased biomass and productivity when the NPC was shifted poleward, and suggest that positioning influences advective transport of nutrients and perhaps key planktonic organisms from the subarctic domain thereby enhancing mid to upper trophic level species. This study is significant because climate change is predicted to cause poleward shifts in the westerlies that drive ocean currents and positioning of large marine gyre systems. Rather than reducing ecosystem productivity, poleward shifts in positioning of the NPC may be beneficial for many species of the central-northern CCE. 3 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
William J. Sydeman Sarah Ann Thompson John C. Field William T. Peterson Ronald W Howard J. Freel Steven J. Bograd Ryan R. Rykaczewski |
spellingShingle |
William J. Sydeman Sarah Ann Thompson John C. Field William T. Peterson Ronald W Howard J. Freel Steven J. Bograd Ryan R. Rykaczewski 1 Does Positioning of the North Pacific Current Affect Downstream Ecosystem Productivity? |
author_facet |
William J. Sydeman Sarah Ann Thompson John C. Field William T. Peterson Ronald W Howard J. Freel Steven J. Bograd Ryan R. Rykaczewski |
author_sort |
William J. Sydeman |
title |
1 Does Positioning of the North Pacific Current Affect Downstream Ecosystem Productivity? |
title_short |
1 Does Positioning of the North Pacific Current Affect Downstream Ecosystem Productivity? |
title_full |
1 Does Positioning of the North Pacific Current Affect Downstream Ecosystem Productivity? |
title_fullStr |
1 Does Positioning of the North Pacific Current Affect Downstream Ecosystem Productivity? |
title_full_unstemmed |
1 Does Positioning of the North Pacific Current Affect Downstream Ecosystem Productivity? |
title_sort |
1 does positioning of the north pacific current affect downstream ecosystem productivity? |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.224.2025 http://www.gfdl.gov/cms-filesystem-action/user_files/rrr/sydeman_et_al_grl_2011_draft.pdf |
geographic |
Pacific |
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Pacific |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
http://www.gfdl.gov/cms-filesystem-action/user_files/rrr/sydeman_et_al_grl_2011_draft.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.224.2025 http://www.gfdl.gov/cms-filesystem-action/user_files/rrr/sydeman_et_al_grl_2011_draft.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766210814322147328 |