Changes in the exploited demersal fish assemblages in the Southern Grand Banks (NAFO Divisions 3NO): 2002–2013
Abstract The Newfoundland Shelf supported one of the world’s greatest fisheries until the main commercial species collapsed more than two decades ago. We calculated three ecological indices for individual populations and five for community from the data obtained in the research surveys conducted by...
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsu182 http://academic.oup.com/icesjms/article-pdf/72/3/753/31224070/fsu182.pdf |
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croxfordunivpr:10.1093/icesjms/fsu182 2024-09-15T18:20:08+00:00 Changes in the exploited demersal fish assemblages in the Southern Grand Banks (NAFO Divisions 3NO): 2002–2013 Nogueira, Adriana Paz, Xabier González-Troncoso, Diana 2014 http://dx.doi.org/10.1093/icesjms/fsu182 http://academic.oup.com/icesjms/article-pdf/72/3/753/31224070/fsu182.pdf en eng Oxford University Press (OUP) ICES Journal of Marine Science volume 72, issue 3, page 753-770 ISSN 1095-9289 1054-3139 journal-article 2014 croxfordunivpr https://doi.org/10.1093/icesjms/fsu182 2024-08-27T04:18:24Z Abstract The Newfoundland Shelf supported one of the world’s greatest fisheries until the main commercial species collapsed more than two decades ago. We calculated three ecological indices for individual populations and five for community from the data obtained in the research surveys conducted by Spain in NAFO Regulatory Area Divisions 3NO between 2002 and 2013. We use data for 24 species to study the dynamics of major demersal fish assemblages (38–300, 301–600, and 601–1460 m depth) and evaluated how they have responded to different levels of exploitation. Trends and changes for individual populations (abundance and biomass, intrinsic population rate of growth, and mean length) and for all the community (ABC curves, indices of faunal diversity, proportion of non-commercial species, mean length in community and size spectra) were used to test ecological trends. Indices showed no homogeneous status and responded to different exploitation patterns, management, and environmental regimes in each assemblage. Our results show an improvement in the shallower and deeper assemblages and that fishing effort does not explain differences among each assemblage. Article in Journal/Newspaper Newfoundland Oxford University Press ICES Journal of Marine Science 72 3 753 770 |
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Oxford University Press |
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description |
Abstract The Newfoundland Shelf supported one of the world’s greatest fisheries until the main commercial species collapsed more than two decades ago. We calculated three ecological indices for individual populations and five for community from the data obtained in the research surveys conducted by Spain in NAFO Regulatory Area Divisions 3NO between 2002 and 2013. We use data for 24 species to study the dynamics of major demersal fish assemblages (38–300, 301–600, and 601–1460 m depth) and evaluated how they have responded to different levels of exploitation. Trends and changes for individual populations (abundance and biomass, intrinsic population rate of growth, and mean length) and for all the community (ABC curves, indices of faunal diversity, proportion of non-commercial species, mean length in community and size spectra) were used to test ecological trends. Indices showed no homogeneous status and responded to different exploitation patterns, management, and environmental regimes in each assemblage. Our results show an improvement in the shallower and deeper assemblages and that fishing effort does not explain differences among each assemblage. |
format |
Article in Journal/Newspaper |
author |
Nogueira, Adriana Paz, Xabier González-Troncoso, Diana |
spellingShingle |
Nogueira, Adriana Paz, Xabier González-Troncoso, Diana Changes in the exploited demersal fish assemblages in the Southern Grand Banks (NAFO Divisions 3NO): 2002–2013 |
author_facet |
Nogueira, Adriana Paz, Xabier González-Troncoso, Diana |
author_sort |
Nogueira, Adriana |
title |
Changes in the exploited demersal fish assemblages in the Southern Grand Banks (NAFO Divisions 3NO): 2002–2013 |
title_short |
Changes in the exploited demersal fish assemblages in the Southern Grand Banks (NAFO Divisions 3NO): 2002–2013 |
title_full |
Changes in the exploited demersal fish assemblages in the Southern Grand Banks (NAFO Divisions 3NO): 2002–2013 |
title_fullStr |
Changes in the exploited demersal fish assemblages in the Southern Grand Banks (NAFO Divisions 3NO): 2002–2013 |
title_full_unstemmed |
Changes in the exploited demersal fish assemblages in the Southern Grand Banks (NAFO Divisions 3NO): 2002–2013 |
title_sort |
changes in the exploited demersal fish assemblages in the southern grand banks (nafo divisions 3no): 2002–2013 |
publisher |
Oxford University Press (OUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1093/icesjms/fsu182 http://academic.oup.com/icesjms/article-pdf/72/3/753/31224070/fsu182.pdf |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
ICES Journal of Marine Science volume 72, issue 3, page 753-770 ISSN 1095-9289 1054-3139 |
op_doi |
https://doi.org/10.1093/icesjms/fsu182 |
container_title |
ICES Journal of Marine Science |
container_volume |
72 |
container_issue |
3 |
container_start_page |
753 |
op_container_end_page |
770 |
_version_ |
1810458509329825792 |