Recent studies overestimate colonization and extinction events for Adelie Penguin breeding colonies
International audience Modeling metapopulation dynamics is potentially a useful and powerful tool for ecologists and conservationbiologists. However, the key processes driving metapopulation dynamics are colonization and extinction events, whichare notoriously difficult to study. A recent global ass...
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Online Access: | https://hal.archives-ouvertes.fr/hal-01502843 https://doi.org/10.1642/AUK-16-125.1 |
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ftccsdartic:oai:HAL:hal-01502843v1 2023-05-15T13:04:37+02:00 Recent studies overestimate colonization and extinction events for Adelie Penguin breeding colonies Southwell, Colin Emmerson, Louise Takahashi, Akinori Kato, Akiko Barbraud, Christophe Delord, Karine Weimerskirch, Henri Australian Antarctic Division (AAD) Australian Government, Department of the Environment and Energy National Insitute of Polar Research National Institute of Polar Research Tokyo (NiPR) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2017 https://hal.archives-ouvertes.fr/hal-01502843 https://doi.org/10.1642/AUK-16-125.1 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1642/AUK-16-125.1 hal-01502843 https://hal.archives-ouvertes.fr/hal-01502843 doi:10.1642/AUK-16-125.1 The Auk https://hal.archives-ouvertes.fr/hal-01502843 The Auk, 2017, 134 (1), pp.39-50. ⟨10.1642/AUK-16-125.1⟩ metapopulation dynamics occupancy Antarctica high-resolution satellite imagery historical data [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2017 ftccsdartic https://doi.org/10.1642/AUK-16-125.1 2021-11-07T03:56:00Z International audience Modeling metapopulation dynamics is potentially a useful and powerful tool for ecologists and conservationbiologists. However, the key processes driving metapopulation dynamics are colonization and extinction events, whichare notoriously difficult to study. A recent global assessment of Adelie Penguin (Pygoscelis adeliae) breedingpopulations reported multiple potential colonization and extinction events from occupancy observations using recenthigh-resolution satellite imagery and examination of historical occupancy literature, but emphasized that the eventsshould be confirmed with direct observations. We evaluated these conclusions by developing a comprehensivedatabase of direct observations of Adelie Penguin breeding site occupancy across East Antarctica. The databaseallowed 16 of 19 proposed colonization and extinction events in this region to be evaluated using direct observationsthat were concurrent in space and time (same breeding season) with observations from satellite imagery. Weconcluded that none of the 16 proposed colonization and extinction events had occurred. One true extinction eventmay have been correctly identified from satellite imagery, but a conclusive evaluation was not possible because thedirect and satellite observations were not concurrent in time. The evaluation identified several sources of error inobservations from satellite imagery, including errors of omission through failure to detect small colonies and errors ofcommission through misidentification of other biological and physical features as Adelie Penguin guano. Theoccupancy database corrected issues of poor precision and accuracy in locations of historical occupancy data. Ourresults improve understanding of key parameters for Adelie Penguin metapopulation dynamics and facilitateimproved interpretation of satellite imagery in the future. Article in Journal/Newspaper Adelie penguin Antarc* Antarctica East Antarctica Pygoscelis adeliae Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) East Antarctica Guano ENVELOPE(141.604,141.604,-66.775,-66.775) The Auk 134 1 39 50 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
metapopulation dynamics occupancy Antarctica high-resolution satellite imagery historical data [SDE]Environmental Sciences |
spellingShingle |
metapopulation dynamics occupancy Antarctica high-resolution satellite imagery historical data [SDE]Environmental Sciences Southwell, Colin Emmerson, Louise Takahashi, Akinori Kato, Akiko Barbraud, Christophe Delord, Karine Weimerskirch, Henri Recent studies overestimate colonization and extinction events for Adelie Penguin breeding colonies |
topic_facet |
metapopulation dynamics occupancy Antarctica high-resolution satellite imagery historical data [SDE]Environmental Sciences |
description |
International audience Modeling metapopulation dynamics is potentially a useful and powerful tool for ecologists and conservationbiologists. However, the key processes driving metapopulation dynamics are colonization and extinction events, whichare notoriously difficult to study. A recent global assessment of Adelie Penguin (Pygoscelis adeliae) breedingpopulations reported multiple potential colonization and extinction events from occupancy observations using recenthigh-resolution satellite imagery and examination of historical occupancy literature, but emphasized that the eventsshould be confirmed with direct observations. We evaluated these conclusions by developing a comprehensivedatabase of direct observations of Adelie Penguin breeding site occupancy across East Antarctica. The databaseallowed 16 of 19 proposed colonization and extinction events in this region to be evaluated using direct observationsthat were concurrent in space and time (same breeding season) with observations from satellite imagery. Weconcluded that none of the 16 proposed colonization and extinction events had occurred. One true extinction eventmay have been correctly identified from satellite imagery, but a conclusive evaluation was not possible because thedirect and satellite observations were not concurrent in time. The evaluation identified several sources of error inobservations from satellite imagery, including errors of omission through failure to detect small colonies and errors ofcommission through misidentification of other biological and physical features as Adelie Penguin guano. Theoccupancy database corrected issues of poor precision and accuracy in locations of historical occupancy data. Ourresults improve understanding of key parameters for Adelie Penguin metapopulation dynamics and facilitateimproved interpretation of satellite imagery in the future. |
author2 |
Australian Antarctic Division (AAD) Australian Government, Department of the Environment and Energy National Insitute of Polar Research National Institute of Polar Research Tokyo (NiPR) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Southwell, Colin Emmerson, Louise Takahashi, Akinori Kato, Akiko Barbraud, Christophe Delord, Karine Weimerskirch, Henri |
author_facet |
Southwell, Colin Emmerson, Louise Takahashi, Akinori Kato, Akiko Barbraud, Christophe Delord, Karine Weimerskirch, Henri |
author_sort |
Southwell, Colin |
title |
Recent studies overestimate colonization and extinction events for Adelie Penguin breeding colonies |
title_short |
Recent studies overestimate colonization and extinction events for Adelie Penguin breeding colonies |
title_full |
Recent studies overestimate colonization and extinction events for Adelie Penguin breeding colonies |
title_fullStr |
Recent studies overestimate colonization and extinction events for Adelie Penguin breeding colonies |
title_full_unstemmed |
Recent studies overestimate colonization and extinction events for Adelie Penguin breeding colonies |
title_sort |
recent studies overestimate colonization and extinction events for adelie penguin breeding colonies |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.archives-ouvertes.fr/hal-01502843 https://doi.org/10.1642/AUK-16-125.1 |
long_lat |
ENVELOPE(141.604,141.604,-66.775,-66.775) |
geographic |
East Antarctica Guano |
geographic_facet |
East Antarctica Guano |
genre |
Adelie penguin Antarc* Antarctica East Antarctica Pygoscelis adeliae |
genre_facet |
Adelie penguin Antarc* Antarctica East Antarctica Pygoscelis adeliae |
op_source |
The Auk https://hal.archives-ouvertes.fr/hal-01502843 The Auk, 2017, 134 (1), pp.39-50. ⟨10.1642/AUK-16-125.1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1642/AUK-16-125.1 hal-01502843 https://hal.archives-ouvertes.fr/hal-01502843 doi:10.1642/AUK-16-125.1 |
op_doi |
https://doi.org/10.1642/AUK-16-125.1 |
container_title |
The Auk |
container_volume |
134 |
container_issue |
1 |
container_start_page |
39 |
op_container_end_page |
50 |
_version_ |
1766365282084847616 |