Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross?
1. Seabirds have been incidentally caught in distant-water longline fleets operating in the Southern Ocean since at least the 1970s, and breeding numbers for some populations have shown marked trends of decline and recovery concomitant with longline fishing effort within their distributions. However...
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2015
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Online Access: | https://doi.org/10.5061/dryad.7f63m |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::fd16680f7336f519074982c2057b5d48 2023-05-15T18:25:56+02:00 Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross? Tuck, Geoffrey N. Thomson, Robin B. Barbraud, Christophe Delord, Karine Louzao, Maite Herrera, Miguel Weimerskirch, Henri 2015-01-01 https://doi.org/10.5061/dryad.7f63m en eng Dryad http://dx.doi.org/10.5061/dryad.7f63m https://dx.doi.org/10.5061/dryad.7f63m lic_creative-commons 10.5061/dryad.7f63m oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:89285 oai:easy.dans.knaw.nl:easy-dataset:89285 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 genetics personality spatial management population model albatross bycatch longline fishing Evolution Life sciences medicine and health care envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2015 fttriple https://doi.org/10.5061/dryad.7f63m 2023-01-22T17:42:10Z 1. Seabirds have been incidentally caught in distant-water longline fleets operating in the Southern Ocean since at least the 1970s, and breeding numbers for some populations have shown marked trends of decline and recovery concomitant with longline fishing effort within their distributions. However, lacking is an understanding of how forms of among-individual heterogeneity may interact with fisheries bycatch and influence population dynamics. 2. We develop a model that uses comprehensive data on the spatial and temporal distributions of fishing effort and seabird foraging to estimate temporal overlaps, fishery catchability and consequent bycatch. We apply a population model that is structured by age, sex, life stage and spatially to Crozet Island wandering albatross and explore how heterogeneity in susceptibility to capture may have influenced the population's demography over time. 3. A model where some birds were assumed to be more susceptible to fisheries bycatch was able to successfully replicate the observed trend in breeding pairs. Considerably poorer fits were found without this assumption. Results suggested that the more susceptible birds may have been removed from the population by the 1990s. 4. The model was also able to highlight areas, times and fleets prone to increased bycatch. Knowledge of these factors should assist fisheries and conservation management bodies to quantify and reduce seabird bycatch through spatial management and fleet-specific mitigation efforts. 5. Synthesis and application. Many seabirds show complex life histories that make them highly susceptible to additional incidental mortality from fishing vessels. By applying a population model that integrates key aspects of seabird and fishery dynamics, we were able to explain the observed trends in the breeding population of Crozet wandering albatross and identify key areas and fleets where further mitigation may be required. In addition, the potential removal of a category of birds that shows increased susceptibility to capture has ... Dataset Southern Ocean Wandering Albatross Unknown Southern Ocean |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
genetics personality spatial management population model albatross bycatch longline fishing Evolution Life sciences medicine and health care envir geo |
spellingShingle |
genetics personality spatial management population model albatross bycatch longline fishing Evolution Life sciences medicine and health care envir geo Tuck, Geoffrey N. Thomson, Robin B. Barbraud, Christophe Delord, Karine Louzao, Maite Herrera, Miguel Weimerskirch, Henri Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross? |
topic_facet |
genetics personality spatial management population model albatross bycatch longline fishing Evolution Life sciences medicine and health care envir geo |
description |
1. Seabirds have been incidentally caught in distant-water longline fleets operating in the Southern Ocean since at least the 1970s, and breeding numbers for some populations have shown marked trends of decline and recovery concomitant with longline fishing effort within their distributions. However, lacking is an understanding of how forms of among-individual heterogeneity may interact with fisheries bycatch and influence population dynamics. 2. We develop a model that uses comprehensive data on the spatial and temporal distributions of fishing effort and seabird foraging to estimate temporal overlaps, fishery catchability and consequent bycatch. We apply a population model that is structured by age, sex, life stage and spatially to Crozet Island wandering albatross and explore how heterogeneity in susceptibility to capture may have influenced the population's demography over time. 3. A model where some birds were assumed to be more susceptible to fisheries bycatch was able to successfully replicate the observed trend in breeding pairs. Considerably poorer fits were found without this assumption. Results suggested that the more susceptible birds may have been removed from the population by the 1990s. 4. The model was also able to highlight areas, times and fleets prone to increased bycatch. Knowledge of these factors should assist fisheries and conservation management bodies to quantify and reduce seabird bycatch through spatial management and fleet-specific mitigation efforts. 5. Synthesis and application. Many seabirds show complex life histories that make them highly susceptible to additional incidental mortality from fishing vessels. By applying a population model that integrates key aspects of seabird and fishery dynamics, we were able to explain the observed trends in the breeding population of Crozet wandering albatross and identify key areas and fleets where further mitigation may be required. In addition, the potential removal of a category of birds that shows increased susceptibility to capture has ... |
format |
Dataset |
author |
Tuck, Geoffrey N. Thomson, Robin B. Barbraud, Christophe Delord, Karine Louzao, Maite Herrera, Miguel Weimerskirch, Henri |
author_facet |
Tuck, Geoffrey N. Thomson, Robin B. Barbraud, Christophe Delord, Karine Louzao, Maite Herrera, Miguel Weimerskirch, Henri |
author_sort |
Tuck, Geoffrey N. |
title |
Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross? |
title_short |
Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross? |
title_full |
Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross? |
title_fullStr |
Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross? |
title_full_unstemmed |
Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross? |
title_sort |
data from: an integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in crozet wandering albatross? |
publisher |
Dryad |
publishDate |
2015 |
url |
https://doi.org/10.5061/dryad.7f63m |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean Wandering Albatross |
genre_facet |
Southern Ocean Wandering Albatross |
op_source |
10.5061/dryad.7f63m oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:89285 oai:easy.dans.knaw.nl:easy-dataset:89285 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 re3data_____::r3d100000044 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 |
op_relation |
http://dx.doi.org/10.5061/dryad.7f63m https://dx.doi.org/10.5061/dryad.7f63m |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.7f63m |
_version_ |
1766207674920206336 |