Bottom-up regulation of a pole-ward migratory predator population
As the effects of regional climate change aremost pronounced at polar latitudes,we might expect polar-ward migratory populations to respond as habitat suitabilitychanges. The southern elephant seal ( Mirounga leonina L.) is a pole-wardmigratory species whose populations have mostly stabilized or inc...
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Online Access: | https://doi.org/10.1098/rspb.2013.2842 http://www.ncbi.nlm.nih.gov/pubmed/24619437 http://ecite.utas.edu.au/92725 |
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ftunivtasecite:oai:ecite.utas.edu.au:92725 2023-05-15T16:05:19+02:00 Bottom-up regulation of a pole-ward migratory predator population van den Hoff, J McMahon, CR Simpkins, GR Hindell, MA Alderman, R Burton, HA 2014 https://doi.org/10.1098/rspb.2013.2842 http://www.ncbi.nlm.nih.gov/pubmed/24619437 http://ecite.utas.edu.au/92725 en eng Royal Soc London http://dx.doi.org/10.1098/rspb.2013.2842 van den Hoff, J and McMahon, CR and Simpkins, GR and Hindell, MA and Alderman, R and Burton, HA, Bottom-up regulation of a pole-ward migratory predator population, Proceedings of the Royal Society of London B, 281, (1782) Article 20132842. ISSN 0962-8452 (2014) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/24619437 http://ecite.utas.edu.au/92725 Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Refereed Article PeerReviewed 2014 ftunivtasecite https://doi.org/10.1098/rspb.2013.2842 2019-12-13T21:55:39Z As the effects of regional climate change aremost pronounced at polar latitudes,we might expect polar-ward migratory populations to respond as habitat suitabilitychanges. The southern elephant seal ( Mirounga leonina L.) is a pole-wardmigratory species whose populations have mostly stabilized or increased inthe past decade, the one exception being the Macquarie Island populationwhich has decreased continuously over the past 50 years. To explore probablecauses of this anomalous trend, we counted breeding female seals annuallybetween 1988 and 2011 in order to relate annual rates of population change( r ) to foraging habitat changes that have known connections with atmosphericvariability.We found r (i) varied annually from 20.016 to 0.021 over the studyperiod, (ii) was most effected by anomalous atmospheric variability after a3 year time lag was introduced ( R = 0.51) and (iii) was associated withsea-ice duration (SID) within the seals foraging range at the same temporallag. Negative r years may be extrapolated to explain, at least partially, theoverall trend in seal abundance at Macquarie Island; specifically, increasingSID within the seals foraging range has a negative influence on their abundanceat the island. Evidence is accruing that suggests southern elephant sealpopulations may respond positively to a reduced sea-ice field. Article in Journal/Newspaper Elephant Seal Macquarie Island Mirounga leonina Sea ice Southern Elephant Seal eCite UTAS (University of Tasmania) Proceedings of the Royal Society B: Biological Sciences 281 1782 20132842 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) van den Hoff, J McMahon, CR Simpkins, GR Hindell, MA Alderman, R Burton, HA Bottom-up regulation of a pole-ward migratory predator population |
topic_facet |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
description |
As the effects of regional climate change aremost pronounced at polar latitudes,we might expect polar-ward migratory populations to respond as habitat suitabilitychanges. The southern elephant seal ( Mirounga leonina L.) is a pole-wardmigratory species whose populations have mostly stabilized or increased inthe past decade, the one exception being the Macquarie Island populationwhich has decreased continuously over the past 50 years. To explore probablecauses of this anomalous trend, we counted breeding female seals annuallybetween 1988 and 2011 in order to relate annual rates of population change( r ) to foraging habitat changes that have known connections with atmosphericvariability.We found r (i) varied annually from 20.016 to 0.021 over the studyperiod, (ii) was most effected by anomalous atmospheric variability after a3 year time lag was introduced ( R = 0.51) and (iii) was associated withsea-ice duration (SID) within the seals foraging range at the same temporallag. Negative r years may be extrapolated to explain, at least partially, theoverall trend in seal abundance at Macquarie Island; specifically, increasingSID within the seals foraging range has a negative influence on their abundanceat the island. Evidence is accruing that suggests southern elephant sealpopulations may respond positively to a reduced sea-ice field. |
format |
Article in Journal/Newspaper |
author |
van den Hoff, J McMahon, CR Simpkins, GR Hindell, MA Alderman, R Burton, HA |
author_facet |
van den Hoff, J McMahon, CR Simpkins, GR Hindell, MA Alderman, R Burton, HA |
author_sort |
van den Hoff, J |
title |
Bottom-up regulation of a pole-ward migratory predator population |
title_short |
Bottom-up regulation of a pole-ward migratory predator population |
title_full |
Bottom-up regulation of a pole-ward migratory predator population |
title_fullStr |
Bottom-up regulation of a pole-ward migratory predator population |
title_full_unstemmed |
Bottom-up regulation of a pole-ward migratory predator population |
title_sort |
bottom-up regulation of a pole-ward migratory predator population |
publisher |
Royal Soc London |
publishDate |
2014 |
url |
https://doi.org/10.1098/rspb.2013.2842 http://www.ncbi.nlm.nih.gov/pubmed/24619437 http://ecite.utas.edu.au/92725 |
genre |
Elephant Seal Macquarie Island Mirounga leonina Sea ice Southern Elephant Seal |
genre_facet |
Elephant Seal Macquarie Island Mirounga leonina Sea ice Southern Elephant Seal |
op_relation |
http://dx.doi.org/10.1098/rspb.2013.2842 van den Hoff, J and McMahon, CR and Simpkins, GR and Hindell, MA and Alderman, R and Burton, HA, Bottom-up regulation of a pole-ward migratory predator population, Proceedings of the Royal Society of London B, 281, (1782) Article 20132842. ISSN 0962-8452 (2014) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/24619437 http://ecite.utas.edu.au/92725 |
op_doi |
https://doi.org/10.1098/rspb.2013.2842 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
281 |
container_issue |
1782 |
container_start_page |
20132842 |
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1766401216720404480 |