Characterizing variation in Northwest Atlantic fish-stock abundance
<qd> Rothschild, B. J., and Jiao, Y. 2012. Characterizing variation in Northwest Atlantic fish-stock abundance. – ICES Journal of Marine Science, 69: 913–922. </qd>Catch-per-tow indices obtained by research vessels for the years 1963–2009 from NAFO statistical areas 4W, 4X, 5Y, and 5Z we...
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fthighwire:oai:open-archive.highwire.org:icesjms:69/5/913 2023-05-15T17:43:56+02:00 Characterizing variation in Northwest Atlantic fish-stock abundance Rothschild, Brian J. Jiao, Yue 2012-07-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/69/5/913 https://doi.org/10.1093/icesjms/fsr196 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/69/5/913 http://dx.doi.org/10.1093/icesjms/fsr196 Copyright (C) 2012, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer The NW Atlantic TEXT 2012 fthighwire https://doi.org/10.1093/icesjms/fsr196 2012-06-19T02:12:34Z <qd> Rothschild, B. J., and Jiao, Y. 2012. Characterizing variation in Northwest Atlantic fish-stock abundance. – ICES Journal of Marine Science, 69: 913–922. </qd>Catch-per-tow indices obtained by research vessels for the years 1963–2009 from NAFO statistical areas 4W, 4X, 5Y, and 5Z were studied to determine how fish “apparent abundance” in the decade 2000–2009 differed from the long-term time-series. Cluster analysis of normalized catch-per-tow data indicated that the abundance and species composition of stocks in each statistical area changed dramatically over the 50-year period. There were decreases in thorny skate, ocean pout, cusk, witch flounder, and monkfish and increases in herring, haddock, northern shrimp, and spiny dogfish. Cluster analysis suggested that these decreases and increases were not gradual, but abrupt, and that these abrupt decreases and increases were concentrated in the decade of the 1980s. Observations of abrupt change were supported by regression-tree analysis of individual stocks. Examination of the interrelationship among abundance indices from different stocks by Bonferroni-adjusted correlation coefficients showed that the abundance trajectories of most stocks were uncorrelated. It appears that the set of population transitions during the decade of the 1980s was a dominant event in the statistical time-series. Text northern shrimp Northwest Atlantic spiny dogfish HighWire Press (Stanford University) Rothschild ENVELOPE(-72.500,-72.500,-69.417,-69.417) ICES Journal of Marine Science 69 5 913 922 |
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Open Polar |
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HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
The NW Atlantic |
spellingShingle |
The NW Atlantic Rothschild, Brian J. Jiao, Yue Characterizing variation in Northwest Atlantic fish-stock abundance |
topic_facet |
The NW Atlantic |
description |
<qd> Rothschild, B. J., and Jiao, Y. 2012. Characterizing variation in Northwest Atlantic fish-stock abundance. – ICES Journal of Marine Science, 69: 913–922. </qd>Catch-per-tow indices obtained by research vessels for the years 1963–2009 from NAFO statistical areas 4W, 4X, 5Y, and 5Z were studied to determine how fish “apparent abundance” in the decade 2000–2009 differed from the long-term time-series. Cluster analysis of normalized catch-per-tow data indicated that the abundance and species composition of stocks in each statistical area changed dramatically over the 50-year period. There were decreases in thorny skate, ocean pout, cusk, witch flounder, and monkfish and increases in herring, haddock, northern shrimp, and spiny dogfish. Cluster analysis suggested that these decreases and increases were not gradual, but abrupt, and that these abrupt decreases and increases were concentrated in the decade of the 1980s. Observations of abrupt change were supported by regression-tree analysis of individual stocks. Examination of the interrelationship among abundance indices from different stocks by Bonferroni-adjusted correlation coefficients showed that the abundance trajectories of most stocks were uncorrelated. It appears that the set of population transitions during the decade of the 1980s was a dominant event in the statistical time-series. |
format |
Text |
author |
Rothschild, Brian J. Jiao, Yue |
author_facet |
Rothschild, Brian J. Jiao, Yue |
author_sort |
Rothschild, Brian J. |
title |
Characterizing variation in Northwest Atlantic fish-stock abundance |
title_short |
Characterizing variation in Northwest Atlantic fish-stock abundance |
title_full |
Characterizing variation in Northwest Atlantic fish-stock abundance |
title_fullStr |
Characterizing variation in Northwest Atlantic fish-stock abundance |
title_full_unstemmed |
Characterizing variation in Northwest Atlantic fish-stock abundance |
title_sort |
characterizing variation in northwest atlantic fish-stock abundance |
publisher |
Oxford University Press |
publishDate |
2012 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/69/5/913 https://doi.org/10.1093/icesjms/fsr196 |
long_lat |
ENVELOPE(-72.500,-72.500,-69.417,-69.417) |
geographic |
Rothschild |
geographic_facet |
Rothschild |
genre |
northern shrimp Northwest Atlantic spiny dogfish |
genre_facet |
northern shrimp Northwest Atlantic spiny dogfish |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/69/5/913 http://dx.doi.org/10.1093/icesjms/fsr196 |
op_rights |
Copyright (C) 2012, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsr196 |
container_title |
ICES Journal of Marine Science |
container_volume |
69 |
container_issue |
5 |
container_start_page |
913 |
op_container_end_page |
922 |
_version_ |
1766146110181605376 |