Gadids and Alewives: Structure Within Complexity in the Gulf of Maine
The collapse of Atlantic cod (Gadus morhua) along the northern 240 km of New England's historically productive coastal shelf has continued for nearly twenty years. Resident spawning groups and their subpopulations have disappeared and have yet to recover, causing local groundfish fisheries to c...
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ftmaineuniv:oai:digitalcommons.library.umaine.edu:mitchellcenter_pubs-1116 2023-05-15T15:27:40+02:00 Gadids and Alewives: Structure Within Complexity in the Gulf of Maine Ames, Edward P. Lichter, John 2013-04-01T07:00:00Z application/pdf https://digitalcommons.library.umaine.edu/mitchellcenter_pubs/115 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1116&context=mitchellcenter_pubs unknown DigitalCommons@UMaine https://digitalcommons.library.umaine.edu/mitchellcenter_pubs/115 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1116&context=mitchellcenter_pubs This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). Publications Gulf of Maine cod predation alewives Gadid population structure Haddock Pollock White hake predation Aquaculture and Fisheries text 2013 ftmaineuniv 2023-03-12T19:51:35Z The collapse of Atlantic cod (Gadus morhua) along the northern 240 km of New England's historically productive coastal shelf has continued for nearly twenty years. Resident spawning groups and their subpopulations have disappeared and have yet to recover, causing local groundfish fisheries to collapse. Three additional gadid species, haddock (Melanogrammus aeglefinus), pollock (Pollachius virens), and white hake (Urophyscus tenuis) collapsed along the northern coastal shelf during the same period, raising concerns that their resident coastal groups were part of a metapopulation and may have also been lost. Analysis of their distribution and movements in the 1920s appeared to corroborate this. The four gadids had clusters of resident coastal groups along the coastal shelf that coexisted in the same area. Cod, white hake and pollock appeared to exhibit metapopulation characteristics, having resident and migrating components distributed along the coast in three different areas, with migrating components arriving and leaving along common migration routes fall when alewives left. The groups were centered near rivers with alewife spawning runs and disappeared from the area during the 1950s after alewives (Alosa pseudoharengus) declined locally. The results suggest that large, stable concentrations of young-of-the-year alewives were a factor in where resident and migrating gadid groups were located. Text atlantic cod Gadus morhua The University of Maine: DigitalCommons@UMaine Hake ENVELOPE(15.612,15.612,66.797,66.797) |
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Open Polar |
collection |
The University of Maine: DigitalCommons@UMaine |
op_collection_id |
ftmaineuniv |
language |
unknown |
topic |
Gulf of Maine cod predation alewives Gadid population structure Haddock Pollock White hake predation Aquaculture and Fisheries |
spellingShingle |
Gulf of Maine cod predation alewives Gadid population structure Haddock Pollock White hake predation Aquaculture and Fisheries Ames, Edward P. Lichter, John Gadids and Alewives: Structure Within Complexity in the Gulf of Maine |
topic_facet |
Gulf of Maine cod predation alewives Gadid population structure Haddock Pollock White hake predation Aquaculture and Fisheries |
description |
The collapse of Atlantic cod (Gadus morhua) along the northern 240 km of New England's historically productive coastal shelf has continued for nearly twenty years. Resident spawning groups and their subpopulations have disappeared and have yet to recover, causing local groundfish fisheries to collapse. Three additional gadid species, haddock (Melanogrammus aeglefinus), pollock (Pollachius virens), and white hake (Urophyscus tenuis) collapsed along the northern coastal shelf during the same period, raising concerns that their resident coastal groups were part of a metapopulation and may have also been lost. Analysis of their distribution and movements in the 1920s appeared to corroborate this. The four gadids had clusters of resident coastal groups along the coastal shelf that coexisted in the same area. Cod, white hake and pollock appeared to exhibit metapopulation characteristics, having resident and migrating components distributed along the coast in three different areas, with migrating components arriving and leaving along common migration routes fall when alewives left. The groups were centered near rivers with alewife spawning runs and disappeared from the area during the 1950s after alewives (Alosa pseudoharengus) declined locally. The results suggest that large, stable concentrations of young-of-the-year alewives were a factor in where resident and migrating gadid groups were located. |
format |
Text |
author |
Ames, Edward P. Lichter, John |
author_facet |
Ames, Edward P. Lichter, John |
author_sort |
Ames, Edward P. |
title |
Gadids and Alewives: Structure Within Complexity in the Gulf of Maine |
title_short |
Gadids and Alewives: Structure Within Complexity in the Gulf of Maine |
title_full |
Gadids and Alewives: Structure Within Complexity in the Gulf of Maine |
title_fullStr |
Gadids and Alewives: Structure Within Complexity in the Gulf of Maine |
title_full_unstemmed |
Gadids and Alewives: Structure Within Complexity in the Gulf of Maine |
title_sort |
gadids and alewives: structure within complexity in the gulf of maine |
publisher |
DigitalCommons@UMaine |
publishDate |
2013 |
url |
https://digitalcommons.library.umaine.edu/mitchellcenter_pubs/115 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1116&context=mitchellcenter_pubs |
long_lat |
ENVELOPE(15.612,15.612,66.797,66.797) |
geographic |
Hake |
geographic_facet |
Hake |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Publications |
op_relation |
https://digitalcommons.library.umaine.edu/mitchellcenter_pubs/115 https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1116&context=mitchellcenter_pubs |
op_rights |
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s). |
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