Gauging the threat: exposure and attraction of sooty albatrosses and white-chinned petrels to fisheries activities in the Southern Indian Ocean
Abstract Bycatch risk assessments typically rely on spatial overlaps between seabirds and fishing vessels but should also consider seabirds’ position in the attraction spectrum. Investigating seabird-fishery interactions in relation to habitat use is vital for species-specific risk assessments. To a...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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Oxford University Press (OUP)
2023
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsad176 https://academic.oup.com/icesjms/article-pdf/81/1/75/56332577/fsad176.pdf |
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croxfordunivpr:10.1093/icesjms/fsad176 2024-09-15T18:18:20+00:00 Gauging the threat: exposure and attraction of sooty albatrosses and white-chinned petrels to fisheries activities in the Southern Indian Ocean Banda, Shamiso Pistorius, Pierre Collet, Julien Corbeau, Alexandre Weimerskirch, Henri Pajot, Adrien Keys, Danielle Z Orgeret, Florian Camphuysen, C J South African National Research Foundation South African National Antarctic Programme 2023 http://dx.doi.org/10.1093/icesjms/fsad176 https://academic.oup.com/icesjms/article-pdf/81/1/75/56332577/fsad176.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by/4.0/ ICES Journal of Marine Science volume 81, issue 1, page 75-85 ISSN 1054-3139 1095-9289 journal-article 2023 croxfordunivpr https://doi.org/10.1093/icesjms/fsad176 2024-07-29T04:22:23Z Abstract Bycatch risk assessments typically rely on spatial overlaps between seabirds and fishing vessels but should also consider seabirds’ position in the attraction spectrum. Investigating seabird-fishery interactions in relation to habitat use is vital for species-specific risk assessments. To address this, we studied interactions between sooty albatrosses (SA) and white-chinned petrels (WCP) with fisheries. GPS data from 20 SA and 18 WCP individuals from Marion Island were analysed alongside Automatic Identification System-derived boat locations over two breeding seasons. We calculated encounter and attraction rates and correlated them with marine habitat characteristics. SA interactions occurred in deeper, warmer waters compared to their foraging habitat when vessels were absent, with 20% of individuals encountering and only 5% being attracted to boats. In contrast, WCP interactions occurred in shallow, warm South African shelf waters, consistent with their typical foraging habitats, with 72% encountering and 56% attracted to boats. These results highlight the need for continued reinforcement of mitigation measures for WCP. Despite the low attraction rates for SA, ongoing vigilance is required due to their smaller population size, which heightens the potential impact of illegal fisheries. The comparison of species along an attraction spectrum contributes to refining risk assessments and informs species-specific conservation strategies. Article in Journal/Newspaper Marion Island Oxford University Press ICES Journal of Marine Science |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Bycatch risk assessments typically rely on spatial overlaps between seabirds and fishing vessels but should also consider seabirds’ position in the attraction spectrum. Investigating seabird-fishery interactions in relation to habitat use is vital for species-specific risk assessments. To address this, we studied interactions between sooty albatrosses (SA) and white-chinned petrels (WCP) with fisheries. GPS data from 20 SA and 18 WCP individuals from Marion Island were analysed alongside Automatic Identification System-derived boat locations over two breeding seasons. We calculated encounter and attraction rates and correlated them with marine habitat characteristics. SA interactions occurred in deeper, warmer waters compared to their foraging habitat when vessels were absent, with 20% of individuals encountering and only 5% being attracted to boats. In contrast, WCP interactions occurred in shallow, warm South African shelf waters, consistent with their typical foraging habitats, with 72% encountering and 56% attracted to boats. These results highlight the need for continued reinforcement of mitigation measures for WCP. Despite the low attraction rates for SA, ongoing vigilance is required due to their smaller population size, which heightens the potential impact of illegal fisheries. The comparison of species along an attraction spectrum contributes to refining risk assessments and informs species-specific conservation strategies. |
author2 |
Camphuysen, C J South African National Research Foundation South African National Antarctic Programme |
format |
Article in Journal/Newspaper |
author |
Banda, Shamiso Pistorius, Pierre Collet, Julien Corbeau, Alexandre Weimerskirch, Henri Pajot, Adrien Keys, Danielle Z Orgeret, Florian |
spellingShingle |
Banda, Shamiso Pistorius, Pierre Collet, Julien Corbeau, Alexandre Weimerskirch, Henri Pajot, Adrien Keys, Danielle Z Orgeret, Florian Gauging the threat: exposure and attraction of sooty albatrosses and white-chinned petrels to fisheries activities in the Southern Indian Ocean |
author_facet |
Banda, Shamiso Pistorius, Pierre Collet, Julien Corbeau, Alexandre Weimerskirch, Henri Pajot, Adrien Keys, Danielle Z Orgeret, Florian |
author_sort |
Banda, Shamiso |
title |
Gauging the threat: exposure and attraction of sooty albatrosses and white-chinned petrels to fisheries activities in the Southern Indian Ocean |
title_short |
Gauging the threat: exposure and attraction of sooty albatrosses and white-chinned petrels to fisheries activities in the Southern Indian Ocean |
title_full |
Gauging the threat: exposure and attraction of sooty albatrosses and white-chinned petrels to fisheries activities in the Southern Indian Ocean |
title_fullStr |
Gauging the threat: exposure and attraction of sooty albatrosses and white-chinned petrels to fisheries activities in the Southern Indian Ocean |
title_full_unstemmed |
Gauging the threat: exposure and attraction of sooty albatrosses and white-chinned petrels to fisheries activities in the Southern Indian Ocean |
title_sort |
gauging the threat: exposure and attraction of sooty albatrosses and white-chinned petrels to fisheries activities in the southern indian ocean |
publisher |
Oxford University Press (OUP) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1093/icesjms/fsad176 https://academic.oup.com/icesjms/article-pdf/81/1/75/56332577/fsad176.pdf |
genre |
Marion Island |
genre_facet |
Marion Island |
op_source |
ICES Journal of Marine Science volume 81, issue 1, page 75-85 ISSN 1054-3139 1095-9289 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1093/icesjms/fsad176 |
container_title |
ICES Journal of Marine Science |
_version_ |
1810456456791588864 |