Foraging strategies of southern elephant seals ( Mirounga leonina ) in relation to frontal zones and water masses
Geolocating-time-depth-temperature-recorders (GLTDTR) provided a continuous record of diving behaviour in relation to water temperature for ten female southern elephant seals from Macquarie Island during their post-breeding trips to sea. Four water bodies were determined from depth/temperature profi...
Published in: | Antarctic Science |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2001
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0954102001000529 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102001000529 |
id |
crcambridgeupr:10.1017/s0954102001000529 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0954102001000529 2024-03-03T08:38:02+00:00 Foraging strategies of southern elephant seals ( Mirounga leonina ) in relation to frontal zones and water masses Field, Iain Hindell, Mark Slip, David Michael, Kelvin 2001 http://dx.doi.org/10.1017/s0954102001000529 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102001000529 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 13, issue 4, page 371-379 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2001 crcambridgeupr https://doi.org/10.1017/s0954102001000529 2024-02-08T08:31:33Z Geolocating-time-depth-temperature-recorders (GLTDTR) provided a continuous record of diving behaviour in relation to water temperature for ten female southern elephant seals from Macquarie Island during their post-breeding trips to sea. Four water bodies were determined from depth/temperature profiles recorded by the GLTDTRs. These water bodies corresponded to Sub-Antarctic Mode Water (SAMW), Polar Front Zone Water (PFZW), Polar Front Water (PFW) and Antarctic Water Masses (AWM). Thermal structures within these water bodies did not influence seal diving behaviour. Overall mean dive depth, nocturnal dive depths, diurnal dive depths and dive duration were similar in all areas. However, individuals did change behaviour as they moved between different water bodies. Seals also used different water bodies in the two different years of the study. We suggest that variations in foraging behaviour among seals are a result of prey distribution associated with local oceanographic conditions, but also reflect important individual foraging strategies within thermal zones. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Elephant Seals Macquarie Island Mirounga leonina Southern Elephant Seals Cambridge University Press Antarctic Antarctic Science 13 4 371 379 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Field, Iain Hindell, Mark Slip, David Michael, Kelvin Foraging strategies of southern elephant seals ( Mirounga leonina ) in relation to frontal zones and water masses |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Geolocating-time-depth-temperature-recorders (GLTDTR) provided a continuous record of diving behaviour in relation to water temperature for ten female southern elephant seals from Macquarie Island during their post-breeding trips to sea. Four water bodies were determined from depth/temperature profiles recorded by the GLTDTRs. These water bodies corresponded to Sub-Antarctic Mode Water (SAMW), Polar Front Zone Water (PFZW), Polar Front Water (PFW) and Antarctic Water Masses (AWM). Thermal structures within these water bodies did not influence seal diving behaviour. Overall mean dive depth, nocturnal dive depths, diurnal dive depths and dive duration were similar in all areas. However, individuals did change behaviour as they moved between different water bodies. Seals also used different water bodies in the two different years of the study. We suggest that variations in foraging behaviour among seals are a result of prey distribution associated with local oceanographic conditions, but also reflect important individual foraging strategies within thermal zones. |
format |
Article in Journal/Newspaper |
author |
Field, Iain Hindell, Mark Slip, David Michael, Kelvin |
author_facet |
Field, Iain Hindell, Mark Slip, David Michael, Kelvin |
author_sort |
Field, Iain |
title |
Foraging strategies of southern elephant seals ( Mirounga leonina ) in relation to frontal zones and water masses |
title_short |
Foraging strategies of southern elephant seals ( Mirounga leonina ) in relation to frontal zones and water masses |
title_full |
Foraging strategies of southern elephant seals ( Mirounga leonina ) in relation to frontal zones and water masses |
title_fullStr |
Foraging strategies of southern elephant seals ( Mirounga leonina ) in relation to frontal zones and water masses |
title_full_unstemmed |
Foraging strategies of southern elephant seals ( Mirounga leonina ) in relation to frontal zones and water masses |
title_sort |
foraging strategies of southern elephant seals ( mirounga leonina ) in relation to frontal zones and water masses |
publisher |
Cambridge University Press (CUP) |
publishDate |
2001 |
url |
http://dx.doi.org/10.1017/s0954102001000529 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102001000529 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctic Science Elephant Seals Macquarie Island Mirounga leonina Southern Elephant Seals |
genre_facet |
Antarc* Antarctic Antarctic Science Elephant Seals Macquarie Island Mirounga leonina Southern Elephant Seals |
op_source |
Antarctic Science volume 13, issue 4, page 371-379 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102001000529 |
container_title |
Antarctic Science |
container_volume |
13 |
container_issue |
4 |
container_start_page |
371 |
op_container_end_page |
379 |
_version_ |
1792503952003039232 |