Long-term breeding phenology shift in royal penguins
The Earth's climate is undergoing rapid warming, unprecedented in recent times, which is driving shifts in the distribution and phenology of many plants and animals. Quantifying changes in breeding phenology is important for understanding how populations respond to these changes. While data on...
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2012
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Online Access: | http://hdl.handle.net/2440/75826 https://doi.org/10.1002/ece3.281 |
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ftunivadelaidedl:oai:digital.library.adelaide.edu.au:2440/75826 2023-12-17T10:19:15+01:00 Long-term breeding phenology shift in royal penguins Hindell, M. Bradshaw, C. Brook, B. Fordham, D. Knowles, K. Hull, C. McMahon, C. 2012 application/pdf http://hdl.handle.net/2440/75826 https://doi.org/10.1002/ece3.281 en eng John Wiley & Sons Ltd Ecology and Evolution, 2012; 2(7):1563-1571 2045-7758 http://hdl.handle.net/2440/75826 doi:10.1002/ece3.281 Bradshaw, C. [0000-0002-5328-7741] Fordham, D. [0000-0003-2137-5592] © 2012 The Authors.Published by Blackwell Publishing Ltd. This is an open access article under the terms of the Creative Commons Attribution Non Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. http://dx.doi.org/10.1002/ece3.281 Antarctica egg laying date global warming reproduction seabirds Journal article 2012 ftunivadelaidedl https://doi.org/10.1002/ece3.281 2023-11-20T23:19:55Z The Earth's climate is undergoing rapid warming, unprecedented in recent times, which is driving shifts in the distribution and phenology of many plants and animals. Quantifying changes in breeding phenology is important for understanding how populations respond to these changes. While data on shifts in phenology are common for Northern Hemisphere species (especially birds), there is a dearth of evidence from the Southern Hemisphere, and even fewer data available from the marine environment. Surface air temperatures at Macquarie Island have increased by 0.62°C during the 30-year study period (0.21°C decade−1) and royal penguins (Eudyptes schlegeli) commenced egg laying on average three days earlier in the 1990s than during the 1960s. This contrasts with other studies of Southern Ocean seabirds; five of nine species are now breeding on average 2.1 days later than during the 1950s. Despite the different direction of these trends, they can be explained by a single underlying mechanism: resource availability. There was a negative relationship between the Southern Annular Mode (SAM) and median laying date of royal penguins, such that low-productivity (low SAM) years delayed laying date. This accords with the observations of other seabird species from the Antarctic, where later laying dates were associated with lower sea ice and lower spring productivity. The unifying factor underpinning phenological trends in eastern Antarctica is therefore resource availability; as food becomes scarcer, birds breed later. These changes are not uniform across the region, however, with resource increases in the subantarctic and decreases in eastern Antarctica. Mark A. Hindell, Corey J. A. Bradshaw, Barry W. Brook, Damien A. Fordham, Knowles Kerry, Cindy Hull & Clive R. McMahon Article in Journal/Newspaper Antarc* Antarctic Antarctica Macquarie Island Sea ice Southern Ocean The University of Adelaide: Digital Library Antarctic Southern Ocean The Antarctic Bradshaw ENVELOPE(163.867,163.867,-71.467,-71.467) Corey ENVELOPE(-145.133,-145.133,-76.667,-76.667) McMahon ENVELOPE(65.148,65.148,-70.835,-70.835) Knowles ENVELOPE(-60.883,-60.883,-71.800,-71.800) Ecology and Evolution 2 7 1563 1571 |
institution |
Open Polar |
collection |
The University of Adelaide: Digital Library |
op_collection_id |
ftunivadelaidedl |
language |
English |
topic |
Antarctica egg laying date global warming reproduction seabirds |
spellingShingle |
Antarctica egg laying date global warming reproduction seabirds Hindell, M. Bradshaw, C. Brook, B. Fordham, D. Knowles, K. Hull, C. McMahon, C. Long-term breeding phenology shift in royal penguins |
topic_facet |
Antarctica egg laying date global warming reproduction seabirds |
description |
The Earth's climate is undergoing rapid warming, unprecedented in recent times, which is driving shifts in the distribution and phenology of many plants and animals. Quantifying changes in breeding phenology is important for understanding how populations respond to these changes. While data on shifts in phenology are common for Northern Hemisphere species (especially birds), there is a dearth of evidence from the Southern Hemisphere, and even fewer data available from the marine environment. Surface air temperatures at Macquarie Island have increased by 0.62°C during the 30-year study period (0.21°C decade−1) and royal penguins (Eudyptes schlegeli) commenced egg laying on average three days earlier in the 1990s than during the 1960s. This contrasts with other studies of Southern Ocean seabirds; five of nine species are now breeding on average 2.1 days later than during the 1950s. Despite the different direction of these trends, they can be explained by a single underlying mechanism: resource availability. There was a negative relationship between the Southern Annular Mode (SAM) and median laying date of royal penguins, such that low-productivity (low SAM) years delayed laying date. This accords with the observations of other seabird species from the Antarctic, where later laying dates were associated with lower sea ice and lower spring productivity. The unifying factor underpinning phenological trends in eastern Antarctica is therefore resource availability; as food becomes scarcer, birds breed later. These changes are not uniform across the region, however, with resource increases in the subantarctic and decreases in eastern Antarctica. Mark A. Hindell, Corey J. A. Bradshaw, Barry W. Brook, Damien A. Fordham, Knowles Kerry, Cindy Hull & Clive R. McMahon |
format |
Article in Journal/Newspaper |
author |
Hindell, M. Bradshaw, C. Brook, B. Fordham, D. Knowles, K. Hull, C. McMahon, C. |
author_facet |
Hindell, M. Bradshaw, C. Brook, B. Fordham, D. Knowles, K. Hull, C. McMahon, C. |
author_sort |
Hindell, M. |
title |
Long-term breeding phenology shift in royal penguins |
title_short |
Long-term breeding phenology shift in royal penguins |
title_full |
Long-term breeding phenology shift in royal penguins |
title_fullStr |
Long-term breeding phenology shift in royal penguins |
title_full_unstemmed |
Long-term breeding phenology shift in royal penguins |
title_sort |
long-term breeding phenology shift in royal penguins |
publisher |
John Wiley & Sons Ltd |
publishDate |
2012 |
url |
http://hdl.handle.net/2440/75826 https://doi.org/10.1002/ece3.281 |
long_lat |
ENVELOPE(163.867,163.867,-71.467,-71.467) ENVELOPE(-145.133,-145.133,-76.667,-76.667) ENVELOPE(65.148,65.148,-70.835,-70.835) ENVELOPE(-60.883,-60.883,-71.800,-71.800) |
geographic |
Antarctic Southern Ocean The Antarctic Bradshaw Corey McMahon Knowles |
geographic_facet |
Antarctic Southern Ocean The Antarctic Bradshaw Corey McMahon Knowles |
genre |
Antarc* Antarctic Antarctica Macquarie Island Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Macquarie Island Sea ice Southern Ocean |
op_source |
http://dx.doi.org/10.1002/ece3.281 |
op_relation |
Ecology and Evolution, 2012; 2(7):1563-1571 2045-7758 http://hdl.handle.net/2440/75826 doi:10.1002/ece3.281 Bradshaw, C. [0000-0002-5328-7741] Fordham, D. [0000-0003-2137-5592] |
op_rights |
© 2012 The Authors.Published by Blackwell Publishing Ltd. This is an open access article under the terms of the Creative Commons Attribution Non Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
op_doi |
https://doi.org/10.1002/ece3.281 |
container_title |
Ecology and Evolution |
container_volume |
2 |
container_issue |
7 |
container_start_page |
1563 |
op_container_end_page |
1571 |
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1785582027814207488 |