Comparative three-dimensional home ranges of adult male southern elephant seal
Resource selection studies in ecology are commonly undertaken at a population-level, yet long-term individual-level studies are undoubtedly important. We compared the travelling- and dive behaviour characteristics of 22 adult male southern elephant seals (Mirounga leonina) tracked from King George I...
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ftawi:oai:epic.awi.de:52854 2023-05-15T13:45:22+02:00 Comparative three-dimensional home ranges of adult male southern elephant seal McIntyre, Trevor Bornemann, Horst de Bruyn, P. J. Nico Márquez, Maria E. I. Reisinger, Ryan R. Rogers, Tracey L. Bester, Marthán N. 2020 https://epic.awi.de/id/eprint/52854/ https://hdl.handle.net/10013/epic.c08d542b-8773-4961-8a3b-159709b64c68 unknown McIntyre, T. , Bornemann, H. , de Bruyn, P. J. N. , Márquez, M. E. I. , Reisinger, R. R. , Rogers, T. L. and Bester, M. N. (2020) Comparative three-dimensional home ranges of adult male southern elephant seal , SCAR Open Science Conference, Hobart, Tasmania, 3 August 2020 - 7 August 2020 . hdl:10013/epic.c08d542b-8773-4961-8a3b-159709b64c68 EPIC3SCAR Open Science Conference, Hobart, Tasmania, 2020-08-03-2020-08-07 Conference notRev 2020 ftawi 2021-12-24T15:45:53Z Resource selection studies in ecology are commonly undertaken at a population-level, yet long-term individual-level studies are undoubtedly important. We compared the travelling- and dive behaviour characteristics of 22 adult male southern elephant seals (Mirounga leonina) tracked from King George Island / Isla 25 de Mayo (KGI) at the Antarctic Peninsula, with data obtained from 28 migrations performed by 17 adult males tracked from sub-Antarctic Marion Island (MI). The population-level home ranges of seals were similar in size for their two-dimensional home ranges (95% kernel density estimate: MI = 2.19 million km²; KGI = 2.1 million km²). However, Marion Island elephant seals typically performed deeper dives (MI = 605 ± 427 m; KGI = 444 ± 282 m), resulting in substantial differences between the total water volumes used when incorporating dive depths into population-level home range estimates (three-dimensional 95% kernel density estimate: MI = 1.4 million km³; KGI = 0.67 million km³). We further investigated the relative influences of population of origin, individual-level behavioural variability, estimated seafloor depths and migration type (i.e. post-moulting vs post-breeding migrations) on the three-dimensional home ranges of study animals. We found no statistically significant support for consistent individual-level differences in three-dimensional home range sizes between populations, but rather that individual-level variability explained most of the data variance, followed by other drivers (e.g. migration time and seafloor depth). These results highlight the need for continued broad-scale long-term individual-level monitoring in this species to inform population-level resource use and habitat requirements. Conference Object Antarc* Antarctic Antarctic Peninsula Elephant Seal Elephant Seals Isla 25 de Mayo King George Island Marion Island Mirounga leonina Southern Elephant Seal Southern Elephant Seals Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic The Antarctic Antarctic Peninsula King George Island 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) isla 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Resource selection studies in ecology are commonly undertaken at a population-level, yet long-term individual-level studies are undoubtedly important. We compared the travelling- and dive behaviour characteristics of 22 adult male southern elephant seals (Mirounga leonina) tracked from King George Island / Isla 25 de Mayo (KGI) at the Antarctic Peninsula, with data obtained from 28 migrations performed by 17 adult males tracked from sub-Antarctic Marion Island (MI). The population-level home ranges of seals were similar in size for their two-dimensional home ranges (95% kernel density estimate: MI = 2.19 million km²; KGI = 2.1 million km²). However, Marion Island elephant seals typically performed deeper dives (MI = 605 ± 427 m; KGI = 444 ± 282 m), resulting in substantial differences between the total water volumes used when incorporating dive depths into population-level home range estimates (three-dimensional 95% kernel density estimate: MI = 1.4 million km³; KGI = 0.67 million km³). We further investigated the relative influences of population of origin, individual-level behavioural variability, estimated seafloor depths and migration type (i.e. post-moulting vs post-breeding migrations) on the three-dimensional home ranges of study animals. We found no statistically significant support for consistent individual-level differences in three-dimensional home range sizes between populations, but rather that individual-level variability explained most of the data variance, followed by other drivers (e.g. migration time and seafloor depth). These results highlight the need for continued broad-scale long-term individual-level monitoring in this species to inform population-level resource use and habitat requirements. |
format |
Conference Object |
author |
McIntyre, Trevor Bornemann, Horst de Bruyn, P. J. Nico Márquez, Maria E. I. Reisinger, Ryan R. Rogers, Tracey L. Bester, Marthán N. |
spellingShingle |
McIntyre, Trevor Bornemann, Horst de Bruyn, P. J. Nico Márquez, Maria E. I. Reisinger, Ryan R. Rogers, Tracey L. Bester, Marthán N. Comparative three-dimensional home ranges of adult male southern elephant seal |
author_facet |
McIntyre, Trevor Bornemann, Horst de Bruyn, P. J. Nico Márquez, Maria E. I. Reisinger, Ryan R. Rogers, Tracey L. Bester, Marthán N. |
author_sort |
McIntyre, Trevor |
title |
Comparative three-dimensional home ranges of adult male southern elephant seal |
title_short |
Comparative three-dimensional home ranges of adult male southern elephant seal |
title_full |
Comparative three-dimensional home ranges of adult male southern elephant seal |
title_fullStr |
Comparative three-dimensional home ranges of adult male southern elephant seal |
title_full_unstemmed |
Comparative three-dimensional home ranges of adult male southern elephant seal |
title_sort |
comparative three-dimensional home ranges of adult male southern elephant seal |
publishDate |
2020 |
url |
https://epic.awi.de/id/eprint/52854/ https://hdl.handle.net/10013/epic.c08d542b-8773-4961-8a3b-159709b64c68 |
long_lat |
ENVELOPE(-58.000,-58.000,-62.083,-62.083) ENVELOPE(-58.000,-58.000,-62.083,-62.083) |
geographic |
Antarctic The Antarctic Antarctic Peninsula King George Island 25 de Mayo isla 25 de Mayo |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula King George Island 25 de Mayo isla 25 de Mayo |
genre |
Antarc* Antarctic Antarctic Peninsula Elephant Seal Elephant Seals Isla 25 de Mayo King George Island Marion Island Mirounga leonina Southern Elephant Seal Southern Elephant Seals |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Elephant Seal Elephant Seals Isla 25 de Mayo King George Island Marion Island Mirounga leonina Southern Elephant Seal Southern Elephant Seals |
op_source |
EPIC3SCAR Open Science Conference, Hobart, Tasmania, 2020-08-03-2020-08-07 |
op_relation |
McIntyre, T. , Bornemann, H. , de Bruyn, P. J. N. , Márquez, M. E. I. , Reisinger, R. R. , Rogers, T. L. and Bester, M. N. (2020) Comparative three-dimensional home ranges of adult male southern elephant seal , SCAR Open Science Conference, Hobart, Tasmania, 3 August 2020 - 7 August 2020 . hdl:10013/epic.c08d542b-8773-4961-8a3b-159709b64c68 |
_version_ |
1766222197249015808 |