Assemblages and biogeography of demersal fishes of the east coast of North America
This study describes and maps demersal fish assemblages for the east coast of North America from Cape Hatteras, North Carolina, to Cape Chidley, Labrador, evaluates evidence for interannual shifts in assemblage distribution, and examines the relationship of the assemblages to accepted biogeographica...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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1998
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Online Access: | http://dx.doi.org/10.1139/f98-065 http://www.nrcresearchpress.com/doi/pdf/10.1139/f98-065 |
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crcansciencepubl:10.1139/f98-065 2024-04-28T08:15:34+00:00 Assemblages and biogeography of demersal fishes of the east coast of North America Mahon, Robin Brown, Stephen K Zwanenburg, Kees CT Atkinson, D Bruce Buja, Kenneth R Claflin, Larry Howell, Geoffrey D Monaco, Mark E O'Boyle, Robert N Sinclair, Michael 1998 http://dx.doi.org/10.1139/f98-065 http://www.nrcresearchpress.com/doi/pdf/10.1139/f98-065 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 55, issue 7, page 1704-1738 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1998 crcansciencepubl https://doi.org/10.1139/f98-065 2024-04-09T06:56:28Z This study describes and maps demersal fish assemblages for the east coast of North America from Cape Hatteras, North Carolina, to Cape Chidley, Labrador, evaluates evidence for interannual shifts in assemblage distribution, and examines the relationship of the assemblages to accepted biogeographical boundaries. Demersal trawl survey data collected from 1975 to 1994 were analyzed. Visual classification of distribution maps for the 108 most abundant demersal species revealed nine species groups, based on both geography and depth distribution. Eighteen assemblage groups were identified using principal components analysis (PCA) and mapped. Assemblage groups were also identified by cluster analysis. Fish assemblages identified by both methods were spatially coherent. Assemblage distribution patterns were not consistent with accepted biogeographical boundaries. The PCA explained only 56.3% of the variance in distribution of the species, indicating that the assemblages should be interpreted as indeterminate, potentially adaptable entities rather than as rigid ecological constructs. Assemblages were persistent in composition through time but appeared to shift in location. The apparent looseness of the assemblages and their persistence through time in spite of severe impacts from fishing suggest that single-species management approaches may not be entirely inappropriate for the major groundfish species in the study area. Article in Journal/Newspaper Cape Chidley Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 55 7 1704 1738 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Mahon, Robin Brown, Stephen K Zwanenburg, Kees CT Atkinson, D Bruce Buja, Kenneth R Claflin, Larry Howell, Geoffrey D Monaco, Mark E O'Boyle, Robert N Sinclair, Michael Assemblages and biogeography of demersal fishes of the east coast of North America |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
This study describes and maps demersal fish assemblages for the east coast of North America from Cape Hatteras, North Carolina, to Cape Chidley, Labrador, evaluates evidence for interannual shifts in assemblage distribution, and examines the relationship of the assemblages to accepted biogeographical boundaries. Demersal trawl survey data collected from 1975 to 1994 were analyzed. Visual classification of distribution maps for the 108 most abundant demersal species revealed nine species groups, based on both geography and depth distribution. Eighteen assemblage groups were identified using principal components analysis (PCA) and mapped. Assemblage groups were also identified by cluster analysis. Fish assemblages identified by both methods were spatially coherent. Assemblage distribution patterns were not consistent with accepted biogeographical boundaries. The PCA explained only 56.3% of the variance in distribution of the species, indicating that the assemblages should be interpreted as indeterminate, potentially adaptable entities rather than as rigid ecological constructs. Assemblages were persistent in composition through time but appeared to shift in location. The apparent looseness of the assemblages and their persistence through time in spite of severe impacts from fishing suggest that single-species management approaches may not be entirely inappropriate for the major groundfish species in the study area. |
format |
Article in Journal/Newspaper |
author |
Mahon, Robin Brown, Stephen K Zwanenburg, Kees CT Atkinson, D Bruce Buja, Kenneth R Claflin, Larry Howell, Geoffrey D Monaco, Mark E O'Boyle, Robert N Sinclair, Michael |
author_facet |
Mahon, Robin Brown, Stephen K Zwanenburg, Kees CT Atkinson, D Bruce Buja, Kenneth R Claflin, Larry Howell, Geoffrey D Monaco, Mark E O'Boyle, Robert N Sinclair, Michael |
author_sort |
Mahon, Robin |
title |
Assemblages and biogeography of demersal fishes of the east coast of North America |
title_short |
Assemblages and biogeography of demersal fishes of the east coast of North America |
title_full |
Assemblages and biogeography of demersal fishes of the east coast of North America |
title_fullStr |
Assemblages and biogeography of demersal fishes of the east coast of North America |
title_full_unstemmed |
Assemblages and biogeography of demersal fishes of the east coast of North America |
title_sort |
assemblages and biogeography of demersal fishes of the east coast of north america |
publisher |
Canadian Science Publishing |
publishDate |
1998 |
url |
http://dx.doi.org/10.1139/f98-065 http://www.nrcresearchpress.com/doi/pdf/10.1139/f98-065 |
genre |
Cape Chidley |
genre_facet |
Cape Chidley |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 55, issue 7, page 1704-1738 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f98-065 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
55 |
container_issue |
7 |
container_start_page |
1704 |
op_container_end_page |
1738 |
_version_ |
1797581061461377024 |