The current trajectory of king penguin ( Aptenodytes patagonicus ) chick numbers on Macquarie Island in relation to environmental conditions
Abstract Macquarie Island's king penguin (Aptenodytes patagonicus) population has changed dramatically over recent centuries. Following near decimation from commercial exploitation during the 19th and early 20th centuries, chick numbers increased rapidly from 1930–1980. Since then, the populati...
Published in: | ICES Journal of Marine Science |
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2022
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsac139 https://academic.oup.com/icesjms/article-pdf/79/7/2084/46127722/fsac139.pdf |
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croxfordunivpr:10.1093/icesjms/fsac139 2023-05-15T17:03:54+02:00 The current trajectory of king penguin ( Aptenodytes patagonicus ) chick numbers on Macquarie Island in relation to environmental conditions Pascoe, Penelope Raymond, Ben Carmichael, Noel McInnes, Julie Camphuysen, C J Australian Antarctic Division NOAA OAR ESRL 2022 http://dx.doi.org/10.1093/icesjms/fsac139 https://academic.oup.com/icesjms/article-pdf/79/7/2084/46127722/fsac139.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 79, issue 7, page 2084-2092 ISSN 1054-3139 1095-9289 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2022 croxfordunivpr https://doi.org/10.1093/icesjms/fsac139 2022-09-30T10:06:47Z Abstract Macquarie Island's king penguin (Aptenodytes patagonicus) population has changed dramatically over recent centuries. Following near decimation from commercial exploitation during the 19th and early 20th centuries, chick numbers increased rapidly from 1930–1980. Since then, the population's trajectory has remained unreported, and environmental factors potentially influencing the population are poorly understood. From 2007–2020, king penguin chicks were censused annually. Chick numbers fluctuated between years, ranging from 33,513–78,714. Overall, the numbers decreased at 1.06 ± 0.03% per annum. While further studies are required to infer causality, annual chick numbers were negatively correlated with environmental conditions on land and at sea. Heavy rainfall, total rainfall, and maximum east coast wave height during incubation correlated with fewer chicks that year. Warmer sea surface temperatures in the foraging region of adult king penguins during incubation and early chick-rearing also correlated with lower chick numbers. While interannual variability and the long generation time of king penguins makes it unclear if the decrease in chick numbers represent a decrease in the breeding population, it is clear the late 20th century rapid increase in Macquarie Island's breeding population has ceased. Ongoing monitoring will establish if this is indicative of the population stabilising or an ongoing population decline. Article in Journal/Newspaper King Penguins Macquarie Island Oxford University Press (via Crossref) ICES Journal of Marine Science |
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Open Polar |
collection |
Oxford University Press (via Crossref) |
op_collection_id |
croxfordunivpr |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
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Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography Pascoe, Penelope Raymond, Ben Carmichael, Noel McInnes, Julie The current trajectory of king penguin ( Aptenodytes patagonicus ) chick numbers on Macquarie Island in relation to environmental conditions |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Macquarie Island's king penguin (Aptenodytes patagonicus) population has changed dramatically over recent centuries. Following near decimation from commercial exploitation during the 19th and early 20th centuries, chick numbers increased rapidly from 1930–1980. Since then, the population's trajectory has remained unreported, and environmental factors potentially influencing the population are poorly understood. From 2007–2020, king penguin chicks were censused annually. Chick numbers fluctuated between years, ranging from 33,513–78,714. Overall, the numbers decreased at 1.06 ± 0.03% per annum. While further studies are required to infer causality, annual chick numbers were negatively correlated with environmental conditions on land and at sea. Heavy rainfall, total rainfall, and maximum east coast wave height during incubation correlated with fewer chicks that year. Warmer sea surface temperatures in the foraging region of adult king penguins during incubation and early chick-rearing also correlated with lower chick numbers. While interannual variability and the long generation time of king penguins makes it unclear if the decrease in chick numbers represent a decrease in the breeding population, it is clear the late 20th century rapid increase in Macquarie Island's breeding population has ceased. Ongoing monitoring will establish if this is indicative of the population stabilising or an ongoing population decline. |
author2 |
Camphuysen, C J Australian Antarctic Division NOAA OAR ESRL |
format |
Article in Journal/Newspaper |
author |
Pascoe, Penelope Raymond, Ben Carmichael, Noel McInnes, Julie |
author_facet |
Pascoe, Penelope Raymond, Ben Carmichael, Noel McInnes, Julie |
author_sort |
Pascoe, Penelope |
title |
The current trajectory of king penguin ( Aptenodytes patagonicus ) chick numbers on Macquarie Island in relation to environmental conditions |
title_short |
The current trajectory of king penguin ( Aptenodytes patagonicus ) chick numbers on Macquarie Island in relation to environmental conditions |
title_full |
The current trajectory of king penguin ( Aptenodytes patagonicus ) chick numbers on Macquarie Island in relation to environmental conditions |
title_fullStr |
The current trajectory of king penguin ( Aptenodytes patagonicus ) chick numbers on Macquarie Island in relation to environmental conditions |
title_full_unstemmed |
The current trajectory of king penguin ( Aptenodytes patagonicus ) chick numbers on Macquarie Island in relation to environmental conditions |
title_sort |
current trajectory of king penguin ( aptenodytes patagonicus ) chick numbers on macquarie island in relation to environmental conditions |
publisher |
Oxford University Press (OUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1093/icesjms/fsac139 https://academic.oup.com/icesjms/article-pdf/79/7/2084/46127722/fsac139.pdf |
genre |
King Penguins Macquarie Island |
genre_facet |
King Penguins Macquarie Island |
op_source |
ICES Journal of Marine Science volume 79, issue 7, page 2084-2092 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/icesjms/fsac139 |
container_title |
ICES Journal of Marine Science |
_version_ |
1766057861088018432 |