Spatial and temporal statistical analysis of bycatch data: patterns of sea turtle bycatch in the North Atlantic
Loggerhead ( Caretta caretta ) and leatherback ( Dermochelys coriacea ) sea turtle distributions and movements in offshore waters of the western North Atlantic are not well understood despite continued efforts to monitor, survey, and observe them. Loggerhead and leatherback sea turtles are listed as...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
2008
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Online Access: | http://dx.doi.org/10.1139/f08-152 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F08-152 http://www.nrcresearchpress.com/doi/pdf/10.1139/F08-152 |
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crcansciencepubl:10.1139/f08-152 2024-06-23T07:55:01+00:00 Spatial and temporal statistical analysis of bycatch data: patterns of sea turtle bycatch in the North Atlantic Gardner, Beth Sullivan, Patrick J. Morreale, Stephen J. Epperly, Sheryan P. 2008 http://dx.doi.org/10.1139/f08-152 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F08-152 http://www.nrcresearchpress.com/doi/pdf/10.1139/F08-152 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 65, issue 11, page 2461-2470 ISSN 0706-652X 1205-7533 journal-article 2008 crcansciencepubl https://doi.org/10.1139/f08-152 2024-06-06T04:11:14Z Loggerhead ( Caretta caretta ) and leatherback ( Dermochelys coriacea ) sea turtle distributions and movements in offshore waters of the western North Atlantic are not well understood despite continued efforts to monitor, survey, and observe them. Loggerhead and leatherback sea turtles are listed as endangered by the World Conservation Union, and thus anthropogenic mortality of these species, including fishing, is of elevated interest. This study quantifies spatial and temporal patterns of sea turtle bycatch distributions to identify potential processes influencing their locations. A Ripley’s K function analysis was employed on the NOAA Fisheries Atlantic Pelagic Longline Observer Program data to determine spatial, temporal, and spatio-temporal patterns of sea turtle bycatch distributions within the pattern of the pelagic fishery distribution. Results indicate that loggerhead and leatherback sea turtle catch distributions change seasonally, with patterns of spatial clustering appearing from July through October. The results from the space–time analysis indicate that sea turtle catch distributions are related on a relatively fine scale (30–200 km and 1–5 days). The use of spatial and temporal point pattern analysis, particularly K function analysis, is a novel way to examine bycatch data and can be used to inform fishing practices such that fishing could still occur while minimizing sea turtle bycatch. Article in Journal/Newspaper North Atlantic Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 65 11 2461 2470 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Loggerhead ( Caretta caretta ) and leatherback ( Dermochelys coriacea ) sea turtle distributions and movements in offshore waters of the western North Atlantic are not well understood despite continued efforts to monitor, survey, and observe them. Loggerhead and leatherback sea turtles are listed as endangered by the World Conservation Union, and thus anthropogenic mortality of these species, including fishing, is of elevated interest. This study quantifies spatial and temporal patterns of sea turtle bycatch distributions to identify potential processes influencing their locations. A Ripley’s K function analysis was employed on the NOAA Fisheries Atlantic Pelagic Longline Observer Program data to determine spatial, temporal, and spatio-temporal patterns of sea turtle bycatch distributions within the pattern of the pelagic fishery distribution. Results indicate that loggerhead and leatherback sea turtle catch distributions change seasonally, with patterns of spatial clustering appearing from July through October. The results from the space–time analysis indicate that sea turtle catch distributions are related on a relatively fine scale (30–200 km and 1–5 days). The use of spatial and temporal point pattern analysis, particularly K function analysis, is a novel way to examine bycatch data and can be used to inform fishing practices such that fishing could still occur while minimizing sea turtle bycatch. |
format |
Article in Journal/Newspaper |
author |
Gardner, Beth Sullivan, Patrick J. Morreale, Stephen J. Epperly, Sheryan P. |
spellingShingle |
Gardner, Beth Sullivan, Patrick J. Morreale, Stephen J. Epperly, Sheryan P. Spatial and temporal statistical analysis of bycatch data: patterns of sea turtle bycatch in the North Atlantic |
author_facet |
Gardner, Beth Sullivan, Patrick J. Morreale, Stephen J. Epperly, Sheryan P. |
author_sort |
Gardner, Beth |
title |
Spatial and temporal statistical analysis of bycatch data: patterns of sea turtle bycatch in the North Atlantic |
title_short |
Spatial and temporal statistical analysis of bycatch data: patterns of sea turtle bycatch in the North Atlantic |
title_full |
Spatial and temporal statistical analysis of bycatch data: patterns of sea turtle bycatch in the North Atlantic |
title_fullStr |
Spatial and temporal statistical analysis of bycatch data: patterns of sea turtle bycatch in the North Atlantic |
title_full_unstemmed |
Spatial and temporal statistical analysis of bycatch data: patterns of sea turtle bycatch in the North Atlantic |
title_sort |
spatial and temporal statistical analysis of bycatch data: patterns of sea turtle bycatch in the north atlantic |
publisher |
Canadian Science Publishing |
publishDate |
2008 |
url |
http://dx.doi.org/10.1139/f08-152 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F08-152 http://www.nrcresearchpress.com/doi/pdf/10.1139/F08-152 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 65, issue 11, page 2461-2470 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f08-152 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
65 |
container_issue |
11 |
container_start_page |
2461 |
op_container_end_page |
2470 |
_version_ |
1802647394837331968 |