Warming effects in the western Antarctic Peninsula ecosystem: the role of population dynamic models for explaining and predicting penguin trends
Abstract The western Antarctica Peninsula and Scotia Sea ecosystems appear to be driven by complex links between climatic variables, primary productivity, krill and Avian predators. There are several studies reporting statistical relationships between climate, krill and Penguin population size. The...
Published in: | Population Ecology |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2013
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1007/s10144-013-0386-1 http://link.springer.com/content/pdf/10.1007/s10144-013-0386-1 |
id |
crwiley:10.1007/s10144-013-0386-1 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1007/s10144-013-0386-1 2024-06-02T07:56:43+00:00 Warming effects in the western Antarctic Peninsula ecosystem: the role of population dynamic models for explaining and predicting penguin trends Lima, Mauricio Estay, Sergio A. 2013 http://dx.doi.org/10.1007/s10144-013-0386-1 http://link.springer.com/content/pdf/10.1007/s10144-013-0386-1 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Population Ecology volume 55, issue 4, page 557-565 ISSN 1438-3896 1438-390X journal-article 2013 crwiley https://doi.org/10.1007/s10144-013-0386-1 2024-05-03T11:18:54Z Abstract The western Antarctica Peninsula and Scotia Sea ecosystems appear to be driven by complex links between climatic variables, primary productivity, krill and Avian predators. There are several studies reporting statistical relationships between climate, krill and Penguin population size. The Adélie ( Pygoscelis adeliae ), Chinstrap ( P. antarctica ) and Gentoo ( P. papua ) penguins appear to be influenced by interannual variability in sea‐ice extent and krill biomass. In this paper we developed simple conceptual models to decipher the role of climate and krill fluctuations on the population dynamics of these three Pygoscelis penguin species inhabiting the Antarctic Peninsula region. Our results suggest that the relevant processes underlying the population dynamics of these penguin species at King George Island (South Shetland Islands) are intra‐specific competition and the combined effects of krill abundance and sea‐ice cover. Our results using population theoretical models appear to support that climate change, specifically regional warming on the western Antarctic Peninsula, represents a major driver. At our study site, penguins showed species‐specific responses to climate change. While Chinstrap penguins were only influenced by krill abundance, the contrasting population trends of Adélie and Gentoo penguins appear to be better explained by the “sea‐ice hypothesis”. We think that proper population dynamic modeling and theory are essential for deciphering and proposing the ecological mechanisms underlying dynamics of these penguin populations. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica King George Island Pygoscelis adeliae Scotia Sea Sea ice South Shetland Islands Wiley Online Library Antarctic Antarctic Peninsula King George Island Scotia Sea South Shetland Islands The Antarctic Population Ecology 55 4 557 565 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract The western Antarctica Peninsula and Scotia Sea ecosystems appear to be driven by complex links between climatic variables, primary productivity, krill and Avian predators. There are several studies reporting statistical relationships between climate, krill and Penguin population size. The Adélie ( Pygoscelis adeliae ), Chinstrap ( P. antarctica ) and Gentoo ( P. papua ) penguins appear to be influenced by interannual variability in sea‐ice extent and krill biomass. In this paper we developed simple conceptual models to decipher the role of climate and krill fluctuations on the population dynamics of these three Pygoscelis penguin species inhabiting the Antarctic Peninsula region. Our results suggest that the relevant processes underlying the population dynamics of these penguin species at King George Island (South Shetland Islands) are intra‐specific competition and the combined effects of krill abundance and sea‐ice cover. Our results using population theoretical models appear to support that climate change, specifically regional warming on the western Antarctic Peninsula, represents a major driver. At our study site, penguins showed species‐specific responses to climate change. While Chinstrap penguins were only influenced by krill abundance, the contrasting population trends of Adélie and Gentoo penguins appear to be better explained by the “sea‐ice hypothesis”. We think that proper population dynamic modeling and theory are essential for deciphering and proposing the ecological mechanisms underlying dynamics of these penguin populations. |
format |
Article in Journal/Newspaper |
author |
Lima, Mauricio Estay, Sergio A. |
spellingShingle |
Lima, Mauricio Estay, Sergio A. Warming effects in the western Antarctic Peninsula ecosystem: the role of population dynamic models for explaining and predicting penguin trends |
author_facet |
Lima, Mauricio Estay, Sergio A. |
author_sort |
Lima, Mauricio |
title |
Warming effects in the western Antarctic Peninsula ecosystem: the role of population dynamic models for explaining and predicting penguin trends |
title_short |
Warming effects in the western Antarctic Peninsula ecosystem: the role of population dynamic models for explaining and predicting penguin trends |
title_full |
Warming effects in the western Antarctic Peninsula ecosystem: the role of population dynamic models for explaining and predicting penguin trends |
title_fullStr |
Warming effects in the western Antarctic Peninsula ecosystem: the role of population dynamic models for explaining and predicting penguin trends |
title_full_unstemmed |
Warming effects in the western Antarctic Peninsula ecosystem: the role of population dynamic models for explaining and predicting penguin trends |
title_sort |
warming effects in the western antarctic peninsula ecosystem: the role of population dynamic models for explaining and predicting penguin trends |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1007/s10144-013-0386-1 http://link.springer.com/content/pdf/10.1007/s10144-013-0386-1 |
geographic |
Antarctic Antarctic Peninsula King George Island Scotia Sea South Shetland Islands The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula King George Island Scotia Sea South Shetland Islands The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island Pygoscelis adeliae Scotia Sea Sea ice South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica King George Island Pygoscelis adeliae Scotia Sea Sea ice South Shetland Islands |
op_source |
Population Ecology volume 55, issue 4, page 557-565 ISSN 1438-3896 1438-390X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1007/s10144-013-0386-1 |
container_title |
Population Ecology |
container_volume |
55 |
container_issue |
4 |
container_start_page |
557 |
op_container_end_page |
565 |
_version_ |
1800758335253774336 |