Association between the interannual variation in the oceanic environment and catch rates of bigeye tuna ( Thunnus obesus) in the Atlantic Ocean
Abstract The environmental processes associated with variability in the catch rates of bigeye tuna in the Atlantic Ocean are largely unexplored. This study used generalized additive models (GAMs) fitted to Taiwanese longline fishery data from 1990 to 2009 and investigated the association between env...
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crwiley:10.1111/fog.12259 2024-06-02T08:11:32+00:00 Association between the interannual variation in the oceanic environment and catch rates of bigeye tuna ( Thunnus obesus) in the Atlantic Ocean Lan, Kuo‐Wei Lee, Ming‐An Chou, Chin‐Pei Vayghan, Ali Haghi Council of Agriculture National Science Council 2018 http://dx.doi.org/10.1111/fog.12259 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffog.12259 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fog.12259 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fisheries Oceanography volume 27, issue 5, page 395-407 ISSN 1054-6006 1365-2419 journal-article 2018 crwiley https://doi.org/10.1111/fog.12259 2024-05-03T11:37:37Z Abstract The environmental processes associated with variability in the catch rates of bigeye tuna in the Atlantic Ocean are largely unexplored. This study used generalized additive models (GAMs) fitted to Taiwanese longline fishery data from 1990 to 2009 and investigated the association between environmental variables and catch rates to identify the processes influencing bigeye tuna distribution in the Atlantic Ocean. The present findings reveal that the year (temporal factor), latitude and longitude (spatial factors), and major regular longline target species of albacore catches are significant for the standardization of bigeye tuna catch rates in the Atlantic Ocean. The standardized catch rates and distribution of bigeye tuna were found to be related to environmental and climatic variation. The model selection processes showed that the selected GAMs explained 70% of the cumulative deviance in the entire Atlantic Ocean. Regarding environmental factors, the depth of the 20 degree isotherm (D20) substantially contributed to the explained deviance; other important factors were sea surface temperature (SST) and sea surface height deviation (SSHD). The potential fishing grounds were observed with SSTs of 22–28°C, a D20 shallower than 150 m and negative SSHDs in the Atlantic Ocean. The higher predicted catch rates were increased in the positive northern tropical Atlantic and negative North Atlantic Oscillation events with a higher SST and shallow D20, suggesting that climatic oscillations affect the population abundance and distribution of bigeye tuna. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library Fisheries Oceanography 27 5 395 407 |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract The environmental processes associated with variability in the catch rates of bigeye tuna in the Atlantic Ocean are largely unexplored. This study used generalized additive models (GAMs) fitted to Taiwanese longline fishery data from 1990 to 2009 and investigated the association between environmental variables and catch rates to identify the processes influencing bigeye tuna distribution in the Atlantic Ocean. The present findings reveal that the year (temporal factor), latitude and longitude (spatial factors), and major regular longline target species of albacore catches are significant for the standardization of bigeye tuna catch rates in the Atlantic Ocean. The standardized catch rates and distribution of bigeye tuna were found to be related to environmental and climatic variation. The model selection processes showed that the selected GAMs explained 70% of the cumulative deviance in the entire Atlantic Ocean. Regarding environmental factors, the depth of the 20 degree isotherm (D20) substantially contributed to the explained deviance; other important factors were sea surface temperature (SST) and sea surface height deviation (SSHD). The potential fishing grounds were observed with SSTs of 22–28°C, a D20 shallower than 150 m and negative SSHDs in the Atlantic Ocean. The higher predicted catch rates were increased in the positive northern tropical Atlantic and negative North Atlantic Oscillation events with a higher SST and shallow D20, suggesting that climatic oscillations affect the population abundance and distribution of bigeye tuna. |
author2 |
Council of Agriculture National Science Council |
format |
Article in Journal/Newspaper |
author |
Lan, Kuo‐Wei Lee, Ming‐An Chou, Chin‐Pei Vayghan, Ali Haghi |
spellingShingle |
Lan, Kuo‐Wei Lee, Ming‐An Chou, Chin‐Pei Vayghan, Ali Haghi Association between the interannual variation in the oceanic environment and catch rates of bigeye tuna ( Thunnus obesus) in the Atlantic Ocean |
author_facet |
Lan, Kuo‐Wei Lee, Ming‐An Chou, Chin‐Pei Vayghan, Ali Haghi |
author_sort |
Lan, Kuo‐Wei |
title |
Association between the interannual variation in the oceanic environment and catch rates of bigeye tuna ( Thunnus obesus) in the Atlantic Ocean |
title_short |
Association between the interannual variation in the oceanic environment and catch rates of bigeye tuna ( Thunnus obesus) in the Atlantic Ocean |
title_full |
Association between the interannual variation in the oceanic environment and catch rates of bigeye tuna ( Thunnus obesus) in the Atlantic Ocean |
title_fullStr |
Association between the interannual variation in the oceanic environment and catch rates of bigeye tuna ( Thunnus obesus) in the Atlantic Ocean |
title_full_unstemmed |
Association between the interannual variation in the oceanic environment and catch rates of bigeye tuna ( Thunnus obesus) in the Atlantic Ocean |
title_sort |
association between the interannual variation in the oceanic environment and catch rates of bigeye tuna ( thunnus obesus) in the atlantic ocean |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/fog.12259 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Ffog.12259 https://onlinelibrary.wiley.com/doi/pdf/10.1111/fog.12259 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Fisheries Oceanography volume 27, issue 5, page 395-407 ISSN 1054-6006 1365-2419 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/fog.12259 |
container_title |
Fisheries Oceanography |
container_volume |
27 |
container_issue |
5 |
container_start_page |
395 |
op_container_end_page |
407 |
_version_ |
1800757714407653376 |