Spatially extensive standardized surveys reveal widespread, multi-decadal increase in east antarctic Adélie penguin populations
International audience Seabirds are considered to be useful and practical indicators of the state of marine ecosystemsbecause they integrate across changes in the lower trophic levels and the physicalenvironment. Signals from this key group of species can indicate broad scale impacts orresponse to e...
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ftunivrochelle:oai:HAL:hal-01304814v1 2024-02-11T09:55:46+01:00 Spatially extensive standardized surveys reveal widespread, multi-decadal increase in east antarctic Adélie penguin populations Southwell, Colin Emmerson, Louise Mckinlay, John Newbery, Kym 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) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) 2015 https://hal.science/hal-01304814 https://doi.org/10.1371/journal.pone.0139877 en eng HAL CCSD Public Library of Science info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0139877 hal-01304814 https://hal.science/hal-01304814 doi:10.1371/journal.pone.0139877 PUBMEDCENTRAL: PMC4619065 ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-01304814 PLoS ONE, 2015, 10 (10), pp.e0139877. ⟨10.1371/journal.pone.0139877⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2015 ftunivrochelle https://doi.org/10.1371/journal.pone.0139877 2024-01-23T23:35:46Z International audience Seabirds are considered to be useful and practical indicators of the state of marine ecosystemsbecause they integrate across changes in the lower trophic levels and the physicalenvironment. Signals from this key group of species can indicate broad scale impacts orresponse to environmental change. Recent studies of penguin populations, the most commonlyabundant Antarctic seabirds in the west Antarctic Peninsula and western Ross Sea,have demonstrated that physical changes in Antarctic marine environments have profoundeffects on biota at high trophic levels. Large populations of the circumpolar-breeding Adéliepenguin occur in East Antarctica, but direct, standardized population data across much ofthis vast coastline have been more limited than in other Antarctic regions. We combineextensive new population survey data, new population estimation methods, and re-interpretedhistorical survey data to assess decadal-scale change in East Antarctic Adélie penguinbreeding populations. We show that, in contrast to the west Antarctic Peninsula andwestern Ross Sea where breeding populations have decreased or shown variable trendsover the last 30 years, East Antarctic regional populations have almost doubled in abundancesince the 1980’s and have been increasing since the earliest counts in the 1960’s.The population changes are associated with five-year lagged changes in the physical environment,suggesting that the changing environment impacts primarily on the pre-breedingage classes. East Antarctic marine ecosystems have been subject to a number of changesover the last 50 years which may have influenced Adélie penguin population growth, includingdecadal-scale climate variation, an inferred mid-20th century sea-ice contraction, andearly-to-mid 20th century exploitation of fish and whale populations. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ross Sea Sea ice HAL - Université de La Rochelle Antarctic Antarctic Peninsula East Antarctica Ross Sea PLOS ONE 10 10 e0139877 |
institution |
Open Polar |
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HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Southwell, Colin Emmerson, Louise Mckinlay, John Newbery, Kym Takahashi, Akinori Kato, Akiko Barbraud, Christophe Delord, Karine Weimerskirch, Henri Spatially extensive standardized surveys reveal widespread, multi-decadal increase in east antarctic Adélie penguin populations |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Seabirds are considered to be useful and practical indicators of the state of marine ecosystemsbecause they integrate across changes in the lower trophic levels and the physicalenvironment. Signals from this key group of species can indicate broad scale impacts orresponse to environmental change. Recent studies of penguin populations, the most commonlyabundant Antarctic seabirds in the west Antarctic Peninsula and western Ross Sea,have demonstrated that physical changes in Antarctic marine environments have profoundeffects on biota at high trophic levels. Large populations of the circumpolar-breeding Adéliepenguin occur in East Antarctica, but direct, standardized population data across much ofthis vast coastline have been more limited than in other Antarctic regions. We combineextensive new population survey data, new population estimation methods, and re-interpretedhistorical survey data to assess decadal-scale change in East Antarctic Adélie penguinbreeding populations. We show that, in contrast to the west Antarctic Peninsula andwestern Ross Sea where breeding populations have decreased or shown variable trendsover the last 30 years, East Antarctic regional populations have almost doubled in abundancesince the 1980’s and have been increasing since the earliest counts in the 1960’s.The population changes are associated with five-year lagged changes in the physical environment,suggesting that the changing environment impacts primarily on the pre-breedingage classes. East Antarctic marine ecosystems have been subject to a number of changesover the last 50 years which may have influenced Adélie penguin population growth, includingdecadal-scale climate variation, an inferred mid-20th century sea-ice contraction, andearly-to-mid 20th century exploitation of fish and whale populations. |
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) Institut National de la Recherche Agronomique (INRA)-La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Southwell, Colin Emmerson, Louise Mckinlay, John Newbery, Kym Takahashi, Akinori Kato, Akiko Barbraud, Christophe Delord, Karine Weimerskirch, Henri |
author_facet |
Southwell, Colin Emmerson, Louise Mckinlay, John Newbery, Kym Takahashi, Akinori Kato, Akiko Barbraud, Christophe Delord, Karine Weimerskirch, Henri |
author_sort |
Southwell, Colin |
title |
Spatially extensive standardized surveys reveal widespread, multi-decadal increase in east antarctic Adélie penguin populations |
title_short |
Spatially extensive standardized surveys reveal widespread, multi-decadal increase in east antarctic Adélie penguin populations |
title_full |
Spatially extensive standardized surveys reveal widespread, multi-decadal increase in east antarctic Adélie penguin populations |
title_fullStr |
Spatially extensive standardized surveys reveal widespread, multi-decadal increase in east antarctic Adélie penguin populations |
title_full_unstemmed |
Spatially extensive standardized surveys reveal widespread, multi-decadal increase in east antarctic Adélie penguin populations |
title_sort |
spatially extensive standardized surveys reveal widespread, multi-decadal increase in east antarctic adélie penguin populations |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-01304814 https://doi.org/10.1371/journal.pone.0139877 |
geographic |
Antarctic Antarctic Peninsula East Antarctica Ross Sea |
geographic_facet |
Antarctic Antarctic Peninsula East Antarctica Ross Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Ross Sea Sea ice |
op_source |
ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.science/hal-01304814 PLoS ONE, 2015, 10 (10), pp.e0139877. ⟨10.1371/journal.pone.0139877⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0139877 hal-01304814 https://hal.science/hal-01304814 doi:10.1371/journal.pone.0139877 PUBMEDCENTRAL: PMC4619065 |
op_doi |
https://doi.org/10.1371/journal.pone.0139877 |
container_title |
PLOS ONE |
container_volume |
10 |
container_issue |
10 |
container_start_page |
e0139877 |
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1790598645638234112 |