Movement responses to environment:fast inference of variation among southern elephant seals with a mixed effects model
Like many species, movement patterns of southern elephant seals (Mirounga leonina) are being influenced by long-term environmental change. These seals migrate up to 4,000 km from their breeding colonies, foraging for months in a variety of Southern Ocean habitats. Understanding how movement patterns...
Published in: | Ecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2019
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Online Access: | https://researchers.mq.edu.au/en/publications/d9d5a39b-4e3d-4e58-a6b3-d0c690547ef7 https://doi.org/10.1002/ecy.2566 https://research-management.mq.edu.au/ws/files/96529572/96519564.pdf http://www.scopus.com/inward/record.url?scp=85058982140&partnerID=8YFLogxK |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/d9d5a39b-4e3d-4e58-a6b3-d0c690547ef7 2024-09-15T17:40:59+00:00 Movement responses to environment:fast inference of variation among southern elephant seals with a mixed effects model Jonsen, I. D. McMahon, C. R. Patterson, T. A. Auger-Méthé, M. Harcourt, R. Hindell, M. A. Bestley, S. 2019-01 application/pdf https://researchers.mq.edu.au/en/publications/d9d5a39b-4e3d-4e58-a6b3-d0c690547ef7 https://doi.org/10.1002/ecy.2566 https://research-management.mq.edu.au/ws/files/96529572/96519564.pdf http://www.scopus.com/inward/record.url?scp=85058982140&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Jonsen , I D , McMahon , C R , Patterson , T A , Auger-Méthé , M , Harcourt , R , Hindell , M A & Bestley , S 2019 , ' Movement responses to environment : fast inference of variation among southern elephant seals with a mixed effects model ' , Ecology , vol. 100 , no. 1 , e02566 , pp. 1-8 . https://doi.org/10.1002/ecy.2566 correlated random walk habitat latent variable random effects southern elephant seals spatial ecology telemetry template model builder article 2019 ftmacquarieunicr https://doi.org/10.1002/ecy.2566 2024-09-04T23:52:01Z Like many species, movement patterns of southern elephant seals (Mirounga leonina) are being influenced by long-term environmental change. These seals migrate up to 4,000 km from their breeding colonies, foraging for months in a variety of Southern Ocean habitats. Understanding how movement patterns vary with environmental features and how these relationships differ among individuals employing different foraging strategies can provide insight into foraging performance at a population level. We apply new fast-estimation tools to fit mixed effects within a random walk movement model, rapidly inferring among-individual variability in southern elephant seal environment–movement relationships. We found that seals making foraging trips to the sea ice on or near the Antarctic continental shelf consistently reduced speed and directionality (move persistence) with increasing sea-ice coverage but had variable responses to chlorophyll a concentration, whereas seals foraging in the open ocean reduced move persistence in regions where circumpolar deep water shoaled. Given future climate scenarios, open-ocean foragers may encounter more productive habitat but sea-ice foragers may see reduced habitat availability. Our approach is scalable to large telemetry data sets and allows flexible combinations of mixed effects to be evaluated via model selection, thereby illuminating the ecological context of animal movements that underlie habitat usage. Article in Journal/Newspaper Antarc* Antarctic Elephant Seal Elephant Seals Mirounga leonina Sea ice Southern Elephant Seal Southern Elephant Seals Southern Ocean Macquarie University Research Portal Ecology 100 1 |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
topic |
correlated random walk habitat latent variable random effects southern elephant seals spatial ecology telemetry template model builder |
spellingShingle |
correlated random walk habitat latent variable random effects southern elephant seals spatial ecology telemetry template model builder Jonsen, I. D. McMahon, C. R. Patterson, T. A. Auger-Méthé, M. Harcourt, R. Hindell, M. A. Bestley, S. Movement responses to environment:fast inference of variation among southern elephant seals with a mixed effects model |
topic_facet |
correlated random walk habitat latent variable random effects southern elephant seals spatial ecology telemetry template model builder |
description |
Like many species, movement patterns of southern elephant seals (Mirounga leonina) are being influenced by long-term environmental change. These seals migrate up to 4,000 km from their breeding colonies, foraging for months in a variety of Southern Ocean habitats. Understanding how movement patterns vary with environmental features and how these relationships differ among individuals employing different foraging strategies can provide insight into foraging performance at a population level. We apply new fast-estimation tools to fit mixed effects within a random walk movement model, rapidly inferring among-individual variability in southern elephant seal environment–movement relationships. We found that seals making foraging trips to the sea ice on or near the Antarctic continental shelf consistently reduced speed and directionality (move persistence) with increasing sea-ice coverage but had variable responses to chlorophyll a concentration, whereas seals foraging in the open ocean reduced move persistence in regions where circumpolar deep water shoaled. Given future climate scenarios, open-ocean foragers may encounter more productive habitat but sea-ice foragers may see reduced habitat availability. Our approach is scalable to large telemetry data sets and allows flexible combinations of mixed effects to be evaluated via model selection, thereby illuminating the ecological context of animal movements that underlie habitat usage. |
format |
Article in Journal/Newspaper |
author |
Jonsen, I. D. McMahon, C. R. Patterson, T. A. Auger-Méthé, M. Harcourt, R. Hindell, M. A. Bestley, S. |
author_facet |
Jonsen, I. D. McMahon, C. R. Patterson, T. A. Auger-Méthé, M. Harcourt, R. Hindell, M. A. Bestley, S. |
author_sort |
Jonsen, I. D. |
title |
Movement responses to environment:fast inference of variation among southern elephant seals with a mixed effects model |
title_short |
Movement responses to environment:fast inference of variation among southern elephant seals with a mixed effects model |
title_full |
Movement responses to environment:fast inference of variation among southern elephant seals with a mixed effects model |
title_fullStr |
Movement responses to environment:fast inference of variation among southern elephant seals with a mixed effects model |
title_full_unstemmed |
Movement responses to environment:fast inference of variation among southern elephant seals with a mixed effects model |
title_sort |
movement responses to environment:fast inference of variation among southern elephant seals with a mixed effects model |
publishDate |
2019 |
url |
https://researchers.mq.edu.au/en/publications/d9d5a39b-4e3d-4e58-a6b3-d0c690547ef7 https://doi.org/10.1002/ecy.2566 https://research-management.mq.edu.au/ws/files/96529572/96519564.pdf http://www.scopus.com/inward/record.url?scp=85058982140&partnerID=8YFLogxK |
genre |
Antarc* Antarctic Elephant Seal Elephant Seals Mirounga leonina Sea ice Southern Elephant Seal Southern Elephant Seals Southern Ocean |
genre_facet |
Antarc* Antarctic Elephant Seal Elephant Seals Mirounga leonina Sea ice Southern Elephant Seal Southern Elephant Seals Southern Ocean |
op_source |
Jonsen , I D , McMahon , C R , Patterson , T A , Auger-Méthé , M , Harcourt , R , Hindell , M A & Bestley , S 2019 , ' Movement responses to environment : fast inference of variation among southern elephant seals with a mixed effects model ' , Ecology , vol. 100 , no. 1 , e02566 , pp. 1-8 . https://doi.org/10.1002/ecy.2566 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/ecy.2566 |
container_title |
Ecology |
container_volume |
100 |
container_issue |
1 |
_version_ |
1810487038409965568 |