Density-dependent Changes in the Spatial Distributions of Atlantic Cod (Gadus morhua), American Plaice (Hippoglossoides platessoides), and Greenland Halibut (Reinhardtius hippoglossoides) on the Flemish Cap during 1988–2002
20 páginas, 18 figuras, 2 tablas. The Flemish Cap is an isolated bank located east of the Grand Banks in the Northwest Atlantic Ocean. Research bottom trawl surveys of the Flemish Cap have been conducted in July by the European Union since 1988. Data from these surveys were used to assess changes in...
Published in: | Journal of Northwest Atlantic Fishery Science |
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Language: | English |
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Northwest Atlantic Fisheries Organization
2005
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Online Access: | http://hdl.handle.net/10261/27024 https://doi.org/10.2960/J.v37.m566 |
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ftcsic:oai:digital.csic.es:10261/27024 2024-02-11T10:01:57+01:00 Density-dependent Changes in the Spatial Distributions of Atlantic Cod (Gadus morhua), American Plaice (Hippoglossoides platessoides), and Greenland Halibut (Reinhardtius hippoglossoides) on the Flemish Cap during 1988–2002 Hendrickson, Lisa Vázquez, Antonio 2005-12 2908978 bytes application/pdf http://hdl.handle.net/10261/27024 https://doi.org/10.2960/J.v37.m566 en eng Northwest Atlantic Fisheries Organization http://dx.doi.org/10.2960/J.v37.m566 Journal of Northwest Atlantic Fishery Science 37: 53-72 (2005) 0250-6408 http://hdl.handle.net/10261/27024 doi:10.2960/J.v37.m566 open American plaice Atlantic cod Collocation Flemish Cap Gadus morhua Greenland halibut Hippoglossoides platessoides Kriging Range contraction Range expansions Reinhardtius hippoglossoides Spatial distribution artículo http://purl.org/coar/resource_type/c_6501 2005 ftcsic https://doi.org/10.2960/J.v37.m566 2024-01-16T09:28:00Z 20 páginas, 18 figuras, 2 tablas. The Flemish Cap is an isolated bank located east of the Grand Banks in the Northwest Atlantic Ocean. Research bottom trawl surveys of the Flemish Cap have been conducted in July by the European Union since 1988. Data from these surveys were used to assess changes in the spatial distributions of Atlantic cod (Gadus morhua), American plaice (Hippoglossoides platessoides), and Greenland halibut (Reinhardtius hippoglossoides) during 1988–2002. Kriging and indices of collocation and co-occurrence indicated that cod and plaice distributions have a high degree of overlap and that density-dependent range contraction of both stocks occurred during a time when Greenland halibut, a more common inhabitant of deep water, exhibited range expansion into shallow water on the Cap. However, the timing and locations of these distributional changes were such that little overlap occurred between the distributions of Greenland halibut and either cod or plaice. The range expansion of Greenland halibut was also density-dependent and primarily attributable to young fish (ages 1 and 2 from the 1994 and 1995 year-classes) which prefer shallow water. The range contractions of cod and plaice have persisted since the mid-1990s, and despite fishing moratoria implemented for plaice in 1994 and for cod in 1999, neither stock has shown signs of recovery. Biological and stock assessment implications of these distribution changes are discussed in relation to the lack of recovery. Peer reviewed Article in Journal/Newspaper atlantic cod Gadus morhua Greenland Northwest Atlantic Digital.CSIC (Spanish National Research Council) Greenland Journal of Northwest Atlantic Fishery Science 37 53 72 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
American plaice Atlantic cod Collocation Flemish Cap Gadus morhua Greenland halibut Hippoglossoides platessoides Kriging Range contraction Range expansions Reinhardtius hippoglossoides Spatial distribution |
spellingShingle |
American plaice Atlantic cod Collocation Flemish Cap Gadus morhua Greenland halibut Hippoglossoides platessoides Kriging Range contraction Range expansions Reinhardtius hippoglossoides Spatial distribution Hendrickson, Lisa Vázquez, Antonio Density-dependent Changes in the Spatial Distributions of Atlantic Cod (Gadus morhua), American Plaice (Hippoglossoides platessoides), and Greenland Halibut (Reinhardtius hippoglossoides) on the Flemish Cap during 1988–2002 |
topic_facet |
American plaice Atlantic cod Collocation Flemish Cap Gadus morhua Greenland halibut Hippoglossoides platessoides Kriging Range contraction Range expansions Reinhardtius hippoglossoides Spatial distribution |
description |
20 páginas, 18 figuras, 2 tablas. The Flemish Cap is an isolated bank located east of the Grand Banks in the Northwest Atlantic Ocean. Research bottom trawl surveys of the Flemish Cap have been conducted in July by the European Union since 1988. Data from these surveys were used to assess changes in the spatial distributions of Atlantic cod (Gadus morhua), American plaice (Hippoglossoides platessoides), and Greenland halibut (Reinhardtius hippoglossoides) during 1988–2002. Kriging and indices of collocation and co-occurrence indicated that cod and plaice distributions have a high degree of overlap and that density-dependent range contraction of both stocks occurred during a time when Greenland halibut, a more common inhabitant of deep water, exhibited range expansion into shallow water on the Cap. However, the timing and locations of these distributional changes were such that little overlap occurred between the distributions of Greenland halibut and either cod or plaice. The range expansion of Greenland halibut was also density-dependent and primarily attributable to young fish (ages 1 and 2 from the 1994 and 1995 year-classes) which prefer shallow water. The range contractions of cod and plaice have persisted since the mid-1990s, and despite fishing moratoria implemented for plaice in 1994 and for cod in 1999, neither stock has shown signs of recovery. Biological and stock assessment implications of these distribution changes are discussed in relation to the lack of recovery. Peer reviewed |
format |
Article in Journal/Newspaper |
author |
Hendrickson, Lisa Vázquez, Antonio |
author_facet |
Hendrickson, Lisa Vázquez, Antonio |
author_sort |
Hendrickson, Lisa |
title |
Density-dependent Changes in the Spatial Distributions of Atlantic Cod (Gadus morhua), American Plaice (Hippoglossoides platessoides), and Greenland Halibut (Reinhardtius hippoglossoides) on the Flemish Cap during 1988–2002 |
title_short |
Density-dependent Changes in the Spatial Distributions of Atlantic Cod (Gadus morhua), American Plaice (Hippoglossoides platessoides), and Greenland Halibut (Reinhardtius hippoglossoides) on the Flemish Cap during 1988–2002 |
title_full |
Density-dependent Changes in the Spatial Distributions of Atlantic Cod (Gadus morhua), American Plaice (Hippoglossoides platessoides), and Greenland Halibut (Reinhardtius hippoglossoides) on the Flemish Cap during 1988–2002 |
title_fullStr |
Density-dependent Changes in the Spatial Distributions of Atlantic Cod (Gadus morhua), American Plaice (Hippoglossoides platessoides), and Greenland Halibut (Reinhardtius hippoglossoides) on the Flemish Cap during 1988–2002 |
title_full_unstemmed |
Density-dependent Changes in the Spatial Distributions of Atlantic Cod (Gadus morhua), American Plaice (Hippoglossoides platessoides), and Greenland Halibut (Reinhardtius hippoglossoides) on the Flemish Cap during 1988–2002 |
title_sort |
density-dependent changes in the spatial distributions of atlantic cod (gadus morhua), american plaice (hippoglossoides platessoides), and greenland halibut (reinhardtius hippoglossoides) on the flemish cap during 1988–2002 |
publisher |
Northwest Atlantic Fisheries Organization |
publishDate |
2005 |
url |
http://hdl.handle.net/10261/27024 https://doi.org/10.2960/J.v37.m566 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
atlantic cod Gadus morhua Greenland Northwest Atlantic |
genre_facet |
atlantic cod Gadus morhua Greenland Northwest Atlantic |
op_relation |
http://dx.doi.org/10.2960/J.v37.m566 Journal of Northwest Atlantic Fishery Science 37: 53-72 (2005) 0250-6408 http://hdl.handle.net/10261/27024 doi:10.2960/J.v37.m566 |
op_rights |
open |
op_doi |
https://doi.org/10.2960/J.v37.m566 |
container_title |
Journal of Northwest Atlantic Fishery Science |
container_volume |
37 |
container_start_page |
53 |
op_container_end_page |
72 |
_version_ |
1790597832786313216 |