An estimate of the South Georgia diving petrel Pelecanoides georgicus population at Ile de La Possession, Crozet archipelago
International audience Burrow-nesting seabirds constitute an important part of seabird diversity, yet accurate estimates of their abundance are largely lacking, limiting our understanding of their population dynamics and conservation status. We conducted a survey to estimate the number of South Geor...
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ftunivrochelle:oai:HAL:hal-03023636v1 2024-02-11T09:59:03+01:00 An estimate of the South Georgia diving petrel Pelecanoides georgicus population at Ile de La Possession, Crozet archipelago Barbraud, Christophe Chaigne, Adrien Loubon, Maxime Lamy, Olivier Le Brouard, Fabrice Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Réserve Naturelle Nationale des Terres Australes Françaises 2020 https://hal.science/hal-03023636 https://doi.org/10.1017/S095410202000019X en eng HAL CCSD Cambridge University Press (CUP) info:eu-repo/semantics/altIdentifier/doi/10.1017/S095410202000019X hal-03023636 https://hal.science/hal-03023636 doi:10.1017/S095410202000019X ISSN: 0954-1020 EISSN: 1365-2079 Antarctic Science https://hal.science/hal-03023636 Antarctic Science, 2020, 32 (4), pp.248-254. ⟨10.1017/S095410202000019X⟩ acoustic playback burrowing petrel detection probability distance sampling Procellariiformes [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2020 ftunivrochelle https://doi.org/10.1017/S095410202000019X 2024-01-23T23:34:49Z International audience Burrow-nesting seabirds constitute an important part of seabird diversity, yet accurate estimates of their abundance are largely lacking, limiting our understanding of their population dynamics and conservation status. We conducted a survey to estimate the number of South Georgia diving petrel (Pelecanoides georgicus) burrows during the 2013–14 breeding season on Ile de la Possession, Crozet archipelago, southern Indian Ocean. We used distance sampling and acoustic playback in order to estimate burrow densities in a priori-selected favourable nesting areas. A total of 855 burrows were detected. The mean altitude of burrows was 601.8 ± 69.4 m. The mean burrow detection distance was 1.77 ± 1.63 m. The burrow density was estimated at 15.649 burrows ha-1 (95% confidence interval (CI): 10.245–23.903) and the slope-corrected total favourable area was 2365.53 ha, which yielded an estimate 37 018 burrows (95% CI: 24 235–56 544). The playback response rate was 15.8 ± 1.3%, and 40.8 ± 1.7% of burrows were occupied or showed signs of occupation. Occupancy rates were low compared to those measured by systematic burrow inspection in other studies. Assuming that laying occurred in 80–93% of the estimated number of burrows, as estimated by previous studies, gives an estimate of 29 614 (95% CI: 19 388–45 235) to 34 426 (95% CI: 22 538–52 585) breeding pairs. Article in Journal/Newspaper Antarctic Science HAL - Université de La Rochelle Burrows ENVELOPE(163.650,163.650,-74.300,-74.300) Indian Antarctic Science 32 4 248 254 |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
acoustic playback burrowing petrel detection probability distance sampling Procellariiformes [SDE]Environmental Sciences |
spellingShingle |
acoustic playback burrowing petrel detection probability distance sampling Procellariiformes [SDE]Environmental Sciences Barbraud, Christophe Chaigne, Adrien Loubon, Maxime Lamy, Olivier Le Brouard, Fabrice An estimate of the South Georgia diving petrel Pelecanoides georgicus population at Ile de La Possession, Crozet archipelago |
topic_facet |
acoustic playback burrowing petrel detection probability distance sampling Procellariiformes [SDE]Environmental Sciences |
description |
International audience Burrow-nesting seabirds constitute an important part of seabird diversity, yet accurate estimates of their abundance are largely lacking, limiting our understanding of their population dynamics and conservation status. We conducted a survey to estimate the number of South Georgia diving petrel (Pelecanoides georgicus) burrows during the 2013–14 breeding season on Ile de la Possession, Crozet archipelago, southern Indian Ocean. We used distance sampling and acoustic playback in order to estimate burrow densities in a priori-selected favourable nesting areas. A total of 855 burrows were detected. The mean altitude of burrows was 601.8 ± 69.4 m. The mean burrow detection distance was 1.77 ± 1.63 m. The burrow density was estimated at 15.649 burrows ha-1 (95% confidence interval (CI): 10.245–23.903) and the slope-corrected total favourable area was 2365.53 ha, which yielded an estimate 37 018 burrows (95% CI: 24 235–56 544). The playback response rate was 15.8 ± 1.3%, and 40.8 ± 1.7% of burrows were occupied or showed signs of occupation. Occupancy rates were low compared to those measured by systematic burrow inspection in other studies. Assuming that laying occurred in 80–93% of the estimated number of burrows, as estimated by previous studies, gives an estimate of 29 614 (95% CI: 19 388–45 235) to 34 426 (95% CI: 22 538–52 585) breeding pairs. |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Réserve Naturelle Nationale des Terres Australes Françaises |
format |
Article in Journal/Newspaper |
author |
Barbraud, Christophe Chaigne, Adrien Loubon, Maxime Lamy, Olivier Le Brouard, Fabrice |
author_facet |
Barbraud, Christophe Chaigne, Adrien Loubon, Maxime Lamy, Olivier Le Brouard, Fabrice |
author_sort |
Barbraud, Christophe |
title |
An estimate of the South Georgia diving petrel Pelecanoides georgicus population at Ile de La Possession, Crozet archipelago |
title_short |
An estimate of the South Georgia diving petrel Pelecanoides georgicus population at Ile de La Possession, Crozet archipelago |
title_full |
An estimate of the South Georgia diving petrel Pelecanoides georgicus population at Ile de La Possession, Crozet archipelago |
title_fullStr |
An estimate of the South Georgia diving petrel Pelecanoides georgicus population at Ile de La Possession, Crozet archipelago |
title_full_unstemmed |
An estimate of the South Georgia diving petrel Pelecanoides georgicus population at Ile de La Possession, Crozet archipelago |
title_sort |
estimate of the south georgia diving petrel pelecanoides georgicus population at ile de la possession, crozet archipelago |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-03023636 https://doi.org/10.1017/S095410202000019X |
long_lat |
ENVELOPE(163.650,163.650,-74.300,-74.300) |
geographic |
Burrows Indian |
geographic_facet |
Burrows Indian |
genre |
Antarctic Science |
genre_facet |
Antarctic Science |
op_source |
ISSN: 0954-1020 EISSN: 1365-2079 Antarctic Science https://hal.science/hal-03023636 Antarctic Science, 2020, 32 (4), pp.248-254. ⟨10.1017/S095410202000019X⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/S095410202000019X hal-03023636 https://hal.science/hal-03023636 doi:10.1017/S095410202000019X |
op_doi |
https://doi.org/10.1017/S095410202000019X |
container_title |
Antarctic Science |
container_volume |
32 |
container_issue |
4 |
container_start_page |
248 |
op_container_end_page |
254 |
_version_ |
1790594931051462656 |