Winter and summer upwelling modes and their biological importance in the California Current Ecosystem
Analysis of monthly coastal upwelling intensities revealed two seasonal and biologically relevant upwelling ‘modes’ in the California Current Ecosystem (CCE). The first mode reflected upwelling during the summer months and was characterized by low-frequency (multidecadal) processes, including signif...
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ftunivnebraskali:oai:digitalcommons.unl.edu:usdeptcommercepub-1241 2023-11-12T04:15:55+01:00 Winter and summer upwelling modes and their biological importance in the California Current Ecosystem Black, Bryan A. Schroeder, Isaac D. Sydeman, William J. Bograd, Steven J. Wells, Brian K. Schwing, Franklin B. 2011-01-01T08:00:00Z application/pdf https://digitalcommons.unl.edu/usdeptcommercepub/242 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1241/viewcontent/Black_GCB_2011_Winter_and_summer_upwelling.pdf unknown DigitalCommons@University of Nebraska - Lincoln https://digitalcommons.unl.edu/usdeptcommercepub/242 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1241/viewcontent/Black_GCB_2011_Winter_and_summer_upwelling.pdf Publications, Agencies and Staff of the U.S. Department of Commerce Cassin’s auklet Chinook salmon climate change common murre dendrochronology rockfish sclerochronology upwelling Environmental Sciences text 2011 ftunivnebraskali 2023-10-30T09:45:13Z Analysis of monthly coastal upwelling intensities revealed two seasonal and biologically relevant upwelling ‘modes’ in the California Current Ecosystem (CCE). The first mode reflected upwelling during the summer months and was characterized by low-frequency (multidecadal) processes, including significant (Po0.01) linear trends at some latitudes. In contrast, the second mode reflected wintertime upwelling and was defined by higher-frequency variability associated with the North Pacific High and El Niño Southern Oscillation events. These modes were compared with multidecadal time series of splitnose rockfish (Sebastes diploproa) otolith growth, yelloweye rockfish (S. ruberrimus) otolith growth, Chinook salmon (Oncorhynchus tshawytscha) scale growth, and indices of Cassin’s auklet (Ptychoramphus aleuticus) and common murre (Uria aalge) reproduction in the central-northern CCE. In redundancy and correlation analyses, salmon growth and Cassin’s auklet fledgling success associated with the summer upwelling mode while all other time series associated with the winter upwelling mode, indicating that CCE biology was differentially sensitive to these seasonal upwelling patterns. Thus, upwelling occurred in unrelated seasonal modes with contrasting trends, atmospheric forcing mechanisms, and impacts on the biology of the CCE, underscoring the importance of seasonality when evaluating ecosystem response to climate variability and change. Text Common Murre Uria aalge uria University of Nebraska-Lincoln: DigitalCommons@UNL Pacific |
institution |
Open Polar |
collection |
University of Nebraska-Lincoln: DigitalCommons@UNL |
op_collection_id |
ftunivnebraskali |
language |
unknown |
topic |
Cassin’s auklet Chinook salmon climate change common murre dendrochronology rockfish sclerochronology upwelling Environmental Sciences |
spellingShingle |
Cassin’s auklet Chinook salmon climate change common murre dendrochronology rockfish sclerochronology upwelling Environmental Sciences Black, Bryan A. Schroeder, Isaac D. Sydeman, William J. Bograd, Steven J. Wells, Brian K. Schwing, Franklin B. Winter and summer upwelling modes and their biological importance in the California Current Ecosystem |
topic_facet |
Cassin’s auklet Chinook salmon climate change common murre dendrochronology rockfish sclerochronology upwelling Environmental Sciences |
description |
Analysis of monthly coastal upwelling intensities revealed two seasonal and biologically relevant upwelling ‘modes’ in the California Current Ecosystem (CCE). The first mode reflected upwelling during the summer months and was characterized by low-frequency (multidecadal) processes, including significant (Po0.01) linear trends at some latitudes. In contrast, the second mode reflected wintertime upwelling and was defined by higher-frequency variability associated with the North Pacific High and El Niño Southern Oscillation events. These modes were compared with multidecadal time series of splitnose rockfish (Sebastes diploproa) otolith growth, yelloweye rockfish (S. ruberrimus) otolith growth, Chinook salmon (Oncorhynchus tshawytscha) scale growth, and indices of Cassin’s auklet (Ptychoramphus aleuticus) and common murre (Uria aalge) reproduction in the central-northern CCE. In redundancy and correlation analyses, salmon growth and Cassin’s auklet fledgling success associated with the summer upwelling mode while all other time series associated with the winter upwelling mode, indicating that CCE biology was differentially sensitive to these seasonal upwelling patterns. Thus, upwelling occurred in unrelated seasonal modes with contrasting trends, atmospheric forcing mechanisms, and impacts on the biology of the CCE, underscoring the importance of seasonality when evaluating ecosystem response to climate variability and change. |
format |
Text |
author |
Black, Bryan A. Schroeder, Isaac D. Sydeman, William J. Bograd, Steven J. Wells, Brian K. Schwing, Franklin B. |
author_facet |
Black, Bryan A. Schroeder, Isaac D. Sydeman, William J. Bograd, Steven J. Wells, Brian K. Schwing, Franklin B. |
author_sort |
Black, Bryan A. |
title |
Winter and summer upwelling modes and their biological importance in the California Current Ecosystem |
title_short |
Winter and summer upwelling modes and their biological importance in the California Current Ecosystem |
title_full |
Winter and summer upwelling modes and their biological importance in the California Current Ecosystem |
title_fullStr |
Winter and summer upwelling modes and their biological importance in the California Current Ecosystem |
title_full_unstemmed |
Winter and summer upwelling modes and their biological importance in the California Current Ecosystem |
title_sort |
winter and summer upwelling modes and their biological importance in the california current ecosystem |
publisher |
DigitalCommons@University of Nebraska - Lincoln |
publishDate |
2011 |
url |
https://digitalcommons.unl.edu/usdeptcommercepub/242 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1241/viewcontent/Black_GCB_2011_Winter_and_summer_upwelling.pdf |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Common Murre Uria aalge uria |
genre_facet |
Common Murre Uria aalge uria |
op_source |
Publications, Agencies and Staff of the U.S. Department of Commerce |
op_relation |
https://digitalcommons.unl.edu/usdeptcommercepub/242 https://digitalcommons.unl.edu/context/usdeptcommercepub/article/1241/viewcontent/Black_GCB_2011_Winter_and_summer_upwelling.pdf |
_version_ |
1782333159999799296 |