Fisheries bycatch mitigation measures as an efficient tool for the conservation of seabird populations
Abstract The impact of industrial fisheries on marine biodiversity is conspicuous in large pelagic vertebrate's fisheries bycatch. In seabirds, this led to the decline of many populations since the 1980s following the rise of global fishing effort. Bycatch mitigation measures were implemented s...
Published in: | Journal of Applied Ecology |
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Online Access: | http://dx.doi.org/10.1111/1365-2664.14189 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.14189 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2664.14189 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.14189 |
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crwiley:10.1111/1365-2664.14189 2024-06-02T08:13:32+00:00 Fisheries bycatch mitigation measures as an efficient tool for the conservation of seabird populations Dasnon, Anaïs Delord, Karine Chaigne, Adrien Barbraud, Christophe 2022 http://dx.doi.org/10.1111/1365-2664.14189 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.14189 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2664.14189 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.14189 en eng Wiley http://creativecommons.org/licenses/by-nc-nd/4.0/ Journal of Applied Ecology volume 59, issue 7, page 1674-1685 ISSN 0021-8901 1365-2664 journal-article 2022 crwiley https://doi.org/10.1111/1365-2664.14189 2024-05-06T07:04:28Z Abstract The impact of industrial fisheries on marine biodiversity is conspicuous in large pelagic vertebrate's fisheries bycatch. In seabirds, this led to the decline of many populations since the 1980s following the rise of global fishing effort. Bycatch mitigation measures were implemented since the 2000s, but their effects on the concerned seabird populations remain poorly quantified and understood. We studied the effects of bycatch mitigation measures on the demography of the white‐chinned petrel, one of the most bycatch impacted seabirds whose populations suffered dramatic declines before the implementation of mitigation measures. To do so we (a) built multi‐event capture–recapture models to estimate the demographic parameters of a population from Possession Island (southern Indian Ocean) over 30 years, (b) assessed the effect of climate and fishery covariates on demographic parameters, (c) built a population matrix model to estimate stochastic growth rate according to the management in fisheries bycatch and (d) estimated changes in breeding population density using distance sampling data. The population declined from the 1980s to the mid‐2000s, while trawl and longline fisheries occurred with no bycatch mitigation measures. The negative effects of fishery bycatch through additive mortality and of rat predation on breeding success were likely the main drivers of this decline. Both modelled population growth rate and observed breeding densities showed an increase since the mid‐2000s. We explained this trend by the improvement in survival probability following implementation of fishery bycatch mitigation measures and in breeding success probability with the local control of the rat population and changes in sea ice conditions on foraging grounds. Synthesis and applications . We provide a holistic approach to assess the effects of management measures by analysing datasets from sampling methods commonly employed in seabird studies. Our conclusions should encourage the eradication of invasive predatory species ... Article in Journal/Newspaper Possession Island Sea ice Wiley Online Library Indian Possession Island ENVELOPE(171.200,171.200,-71.867,-71.867) Journal of Applied Ecology 59 7 1674 1685 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract The impact of industrial fisheries on marine biodiversity is conspicuous in large pelagic vertebrate's fisheries bycatch. In seabirds, this led to the decline of many populations since the 1980s following the rise of global fishing effort. Bycatch mitigation measures were implemented since the 2000s, but their effects on the concerned seabird populations remain poorly quantified and understood. We studied the effects of bycatch mitigation measures on the demography of the white‐chinned petrel, one of the most bycatch impacted seabirds whose populations suffered dramatic declines before the implementation of mitigation measures. To do so we (a) built multi‐event capture–recapture models to estimate the demographic parameters of a population from Possession Island (southern Indian Ocean) over 30 years, (b) assessed the effect of climate and fishery covariates on demographic parameters, (c) built a population matrix model to estimate stochastic growth rate according to the management in fisheries bycatch and (d) estimated changes in breeding population density using distance sampling data. The population declined from the 1980s to the mid‐2000s, while trawl and longline fisheries occurred with no bycatch mitigation measures. The negative effects of fishery bycatch through additive mortality and of rat predation on breeding success were likely the main drivers of this decline. Both modelled population growth rate and observed breeding densities showed an increase since the mid‐2000s. We explained this trend by the improvement in survival probability following implementation of fishery bycatch mitigation measures and in breeding success probability with the local control of the rat population and changes in sea ice conditions on foraging grounds. Synthesis and applications . We provide a holistic approach to assess the effects of management measures by analysing datasets from sampling methods commonly employed in seabird studies. Our conclusions should encourage the eradication of invasive predatory species ... |
format |
Article in Journal/Newspaper |
author |
Dasnon, Anaïs Delord, Karine Chaigne, Adrien Barbraud, Christophe |
spellingShingle |
Dasnon, Anaïs Delord, Karine Chaigne, Adrien Barbraud, Christophe Fisheries bycatch mitigation measures as an efficient tool for the conservation of seabird populations |
author_facet |
Dasnon, Anaïs Delord, Karine Chaigne, Adrien Barbraud, Christophe |
author_sort |
Dasnon, Anaïs |
title |
Fisheries bycatch mitigation measures as an efficient tool for the conservation of seabird populations |
title_short |
Fisheries bycatch mitigation measures as an efficient tool for the conservation of seabird populations |
title_full |
Fisheries bycatch mitigation measures as an efficient tool for the conservation of seabird populations |
title_fullStr |
Fisheries bycatch mitigation measures as an efficient tool for the conservation of seabird populations |
title_full_unstemmed |
Fisheries bycatch mitigation measures as an efficient tool for the conservation of seabird populations |
title_sort |
fisheries bycatch mitigation measures as an efficient tool for the conservation of seabird populations |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/1365-2664.14189 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.14189 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1365-2664.14189 https://besjournals.onlinelibrary.wiley.com/doi/pdf/10.1111/1365-2664.14189 |
long_lat |
ENVELOPE(171.200,171.200,-71.867,-71.867) |
geographic |
Indian Possession Island |
geographic_facet |
Indian Possession Island |
genre |
Possession Island Sea ice |
genre_facet |
Possession Island Sea ice |
op_source |
Journal of Applied Ecology volume 59, issue 7, page 1674-1685 ISSN 0021-8901 1365-2664 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1111/1365-2664.14189 |
container_title |
Journal of Applied Ecology |
container_volume |
59 |
container_issue |
7 |
container_start_page |
1674 |
op_container_end_page |
1685 |
_version_ |
1800737073986011136 |