Trends in gentoo penguin (Pygoscelis papua) breeding population size at Macquarie Island
Gentoo penguins (Pygoscelis papua) have a widespread breeding distribution across the sub-Antarctic and Antarctic. Population trends vary across their range, with increases recorded in the Antarctic and Atlantic sectors of the Southern Ocean, while other sub-Antarctic populations are decreasing. Mac...
Published in: | Polar Biology |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer
|
Subjects: | |
Online Access: | http://hdl.handle.net/1885/222410 https://doi.org/10.1007/s00300-020-02697-0 https://openresearch-repository.anu.edu.au/bitstream/1885/222410/3/01_Pascoe_Trends_in_gentoo_penguin_2020.pdf.jpg |
id |
ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/222410 |
---|---|
record_format |
openpolar |
spelling |
ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/222410 2024-01-14T10:01:07+01:00 Trends in gentoo penguin (Pygoscelis papua) breeding population size at Macquarie Island Pascoe, Penelope McInnes, J. Lashko, Anna Robinson, Sue Achurch, Helen Salton, Marcus Alderman, Rachael Carmichael, Noel application/pdf http://hdl.handle.net/1885/222410 https://doi.org/10.1007/s00300-020-02697-0 https://openresearch-repository.anu.edu.au/bitstream/1885/222410/3/01_Pascoe_Trends_in_gentoo_penguin_2020.pdf.jpg en_AU eng Springer 0722-4060 http://hdl.handle.net/1885/222410 doi:10.1007/s00300-020-02697-0 https://openresearch-repository.anu.edu.au/bitstream/1885/222410/3/01_Pascoe_Trends_in_gentoo_penguin_2020.pdf.jpg © Springer-Verlag GmbH Germany, part of Springer Nature 2020 Polar Biology Population census Long-term monitoring Seabird Breeding success Southern Ocean Sub-Antarctic Journal article ftanucanberra https://doi.org/10.1007/s00300-020-02697-0 2023-12-15T09:38:00Z Gentoo penguins (Pygoscelis papua) have a widespread breeding distribution across the sub-Antarctic and Antarctic. Population trends vary across their range, with increases recorded in the Antarctic and Atlantic sectors of the Southern Ocean, while other sub-Antarctic populations are decreasing. Macquarie Island is the only breeding site for gentoo penguins in the Pacifc sector of the Southern Ocean and one of just two breeding sites within Australian territories. Eight island-wide censuses were undertaken between 1984 and 2017 to estimate the number of breeding pairs, with a follow-up chick census conducted in four years to calculate breeding success. The most recent census in 2017 recorded the fewest breeding pairs since counts began, with 2527±66 gentoo pairs island wide. However, breeding success was the highest recorded at 0.99 chicks per nest. Trends in sub-populations around the island difered. However, island-wide breeding pairs have decreased by − 1.8±0.4% per annum over the past 34 years, particularly driven by breeding colonies in the east-coast section of the island. This overall negative trend difers from the currently stable global trend, but mirrors what is happening in some other parts of the species’ sub-Antarctic range. We suggest based on a 50% decrease in breeding pairs over the species’ last three generations, and a lack of recent data from Heard Island, Australia’s other gentoo penguin breeding site, the species be considered for listing under the Australian Environment Protection and Biodiversity Conservation Act 1999. Article in Journal/Newspaper Antarc* Antarctic Gentoo penguin Heard Island Macquarie Island Polar Biology Pygoscelis papua Southern Ocean Australian National University: ANU Digital Collections Antarctic Southern Ocean The Antarctic Heard Island Polar Biology 43 7 877 886 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
English |
topic |
Population census Long-term monitoring Seabird Breeding success Southern Ocean Sub-Antarctic |
spellingShingle |
Population census Long-term monitoring Seabird Breeding success Southern Ocean Sub-Antarctic Pascoe, Penelope McInnes, J. Lashko, Anna Robinson, Sue Achurch, Helen Salton, Marcus Alderman, Rachael Carmichael, Noel Trends in gentoo penguin (Pygoscelis papua) breeding population size at Macquarie Island |
topic_facet |
Population census Long-term monitoring Seabird Breeding success Southern Ocean Sub-Antarctic |
description |
Gentoo penguins (Pygoscelis papua) have a widespread breeding distribution across the sub-Antarctic and Antarctic. Population trends vary across their range, with increases recorded in the Antarctic and Atlantic sectors of the Southern Ocean, while other sub-Antarctic populations are decreasing. Macquarie Island is the only breeding site for gentoo penguins in the Pacifc sector of the Southern Ocean and one of just two breeding sites within Australian territories. Eight island-wide censuses were undertaken between 1984 and 2017 to estimate the number of breeding pairs, with a follow-up chick census conducted in four years to calculate breeding success. The most recent census in 2017 recorded the fewest breeding pairs since counts began, with 2527±66 gentoo pairs island wide. However, breeding success was the highest recorded at 0.99 chicks per nest. Trends in sub-populations around the island difered. However, island-wide breeding pairs have decreased by − 1.8±0.4% per annum over the past 34 years, particularly driven by breeding colonies in the east-coast section of the island. This overall negative trend difers from the currently stable global trend, but mirrors what is happening in some other parts of the species’ sub-Antarctic range. We suggest based on a 50% decrease in breeding pairs over the species’ last three generations, and a lack of recent data from Heard Island, Australia’s other gentoo penguin breeding site, the species be considered for listing under the Australian Environment Protection and Biodiversity Conservation Act 1999. |
format |
Article in Journal/Newspaper |
author |
Pascoe, Penelope McInnes, J. Lashko, Anna Robinson, Sue Achurch, Helen Salton, Marcus Alderman, Rachael Carmichael, Noel |
author_facet |
Pascoe, Penelope McInnes, J. Lashko, Anna Robinson, Sue Achurch, Helen Salton, Marcus Alderman, Rachael Carmichael, Noel |
author_sort |
Pascoe, Penelope |
title |
Trends in gentoo penguin (Pygoscelis papua) breeding population size at Macquarie Island |
title_short |
Trends in gentoo penguin (Pygoscelis papua) breeding population size at Macquarie Island |
title_full |
Trends in gentoo penguin (Pygoscelis papua) breeding population size at Macquarie Island |
title_fullStr |
Trends in gentoo penguin (Pygoscelis papua) breeding population size at Macquarie Island |
title_full_unstemmed |
Trends in gentoo penguin (Pygoscelis papua) breeding population size at Macquarie Island |
title_sort |
trends in gentoo penguin (pygoscelis papua) breeding population size at macquarie island |
publisher |
Springer |
url |
http://hdl.handle.net/1885/222410 https://doi.org/10.1007/s00300-020-02697-0 https://openresearch-repository.anu.edu.au/bitstream/1885/222410/3/01_Pascoe_Trends_in_gentoo_penguin_2020.pdf.jpg |
geographic |
Antarctic Southern Ocean The Antarctic Heard Island |
geographic_facet |
Antarctic Southern Ocean The Antarctic Heard Island |
genre |
Antarc* Antarctic Gentoo penguin Heard Island Macquarie Island Polar Biology Pygoscelis papua Southern Ocean |
genre_facet |
Antarc* Antarctic Gentoo penguin Heard Island Macquarie Island Polar Biology Pygoscelis papua Southern Ocean |
op_source |
Polar Biology |
op_relation |
0722-4060 http://hdl.handle.net/1885/222410 doi:10.1007/s00300-020-02697-0 https://openresearch-repository.anu.edu.au/bitstream/1885/222410/3/01_Pascoe_Trends_in_gentoo_penguin_2020.pdf.jpg |
op_rights |
© Springer-Verlag GmbH Germany, part of Springer Nature 2020 |
op_doi |
https://doi.org/10.1007/s00300-020-02697-0 |
container_title |
Polar Biology |
container_volume |
43 |
container_issue |
7 |
container_start_page |
877 |
op_container_end_page |
886 |
_version_ |
1788066935301210112 |