Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea
The Antarctic Pack Ice Seal (APIS) Program was initiated in 1994 to estimate the abundance of four species of Antarctic phocids: the crabeater seal Lobodon carcinophaga , Weddell seal Leptonychotes weddellii , Ross seal Ommatophoca rossii and leopard seal Hydrurga leptonyx and to identify ecological...
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ftawi:oai:epic.awi.de:41693 2024-09-15T17:41:09+00:00 Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea Gurarie, Eliezer Bengtson, John L. Bester, Marthán N. Blix, Arnoldus Schytte Cameron, Michael Bornemann, Horst Nordøy, Erling S. Plötz, Joachim Steinhage, Daniel Boveng, Peter 2017 application/pdf https://epic.awi.de/id/eprint/41693/ https://epic.awi.de/id/eprint/41693/1/Gurarie-etal_2017.pdf https://doi.org/10.1007/s00300-016-2029-4 https://hdl.handle.net/10013/epic.48568 https://hdl.handle.net/10013/epic.48568.d001 unknown https://epic.awi.de/id/eprint/41693/1/Gurarie-etal_2017.pdf https://hdl.handle.net/10013/epic.48568.d001 Gurarie, E. , Bengtson, J. L. , Bester, M. N. , Blix, A. S. , Cameron, M. , Bornemann, H. , Nordøy, E. S. , Plötz, J. , Steinhage, D. orcid:0000-0003-4737-9751 and Boveng, P. (2017) Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea , Polar Biology, 40 (5), pp. 1149-1165 . doi:10.1007/s00300-016-2029-4 <https://doi.org/10.1007/s00300-016-2029-4> , hdl:10013/epic.48568 EPIC3Polar Biology, 40(5), pp. 1149-1165, ISSN: 0722-4060 Article isiRev 2017 ftawi https://doi.org/10.1007/s00300-016-2029-4 2024-06-24T04:15:36Z The Antarctic Pack Ice Seal (APIS) Program was initiated in 1994 to estimate the abundance of four species of Antarctic phocids: the crabeater seal Lobodon carcinophaga , Weddell seal Leptonychotes weddellii , Ross seal Ommatophoca rossii and leopard seal Hydrurga leptonyx and to identify ecological relationships and habitat use patterns. The Atlantic sector of the Southern Ocean (the eastern sector of the Weddell Sea) was surveyed by research teams from Germany, Norway and South Africa using a range of aerial methods over five austral summers between 1996–1997 and 2000–2001. We used these observations to model densities of seals in the area, taking into account haul-out probabilities, survey-specific sighting probabilities and covariates derived from satellite-based ice concentrations and bathymetry. These models predicted the total abundance over the area bounded by the surveys (30° W and 10° E). In this sector of the coast, we estimated seal abundances of: 514 (95 % CI 337–886) 10^3 crabeater seals, 60.0 (43.2–94.4) 10^3 Weddell seals and 13.2 (5.50–39.7) 10^3 leopard seals. The crabeater seal densities, approximately 14,000 seals per degree longitude, are similar to estimates obtained by surveys in the Pacific and Indian sectors by other APIS researchers. Very few Ross seals were observed (24 total), leading to a conservative estimate of 830 (119–2894) individuals over the study area. These results provide an important baseline against which to compare future changes in seal distribution and abundance. Article in Journal/Newspaper Antarc* Antarctic Crabeater Seal Crabeater Seals Hydrurga leptonyx Leopard Seal Leopard Seals Polar Biology Queen Maud Land Ross Seal Southern Ocean Weddell Sea Weddell Seal Weddell Seals Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Polar Biology 40 5 1149 1165 |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The Antarctic Pack Ice Seal (APIS) Program was initiated in 1994 to estimate the abundance of four species of Antarctic phocids: the crabeater seal Lobodon carcinophaga , Weddell seal Leptonychotes weddellii , Ross seal Ommatophoca rossii and leopard seal Hydrurga leptonyx and to identify ecological relationships and habitat use patterns. The Atlantic sector of the Southern Ocean (the eastern sector of the Weddell Sea) was surveyed by research teams from Germany, Norway and South Africa using a range of aerial methods over five austral summers between 1996–1997 and 2000–2001. We used these observations to model densities of seals in the area, taking into account haul-out probabilities, survey-specific sighting probabilities and covariates derived from satellite-based ice concentrations and bathymetry. These models predicted the total abundance over the area bounded by the surveys (30° W and 10° E). In this sector of the coast, we estimated seal abundances of: 514 (95 % CI 337–886) 10^3 crabeater seals, 60.0 (43.2–94.4) 10^3 Weddell seals and 13.2 (5.50–39.7) 10^3 leopard seals. The crabeater seal densities, approximately 14,000 seals per degree longitude, are similar to estimates obtained by surveys in the Pacific and Indian sectors by other APIS researchers. Very few Ross seals were observed (24 total), leading to a conservative estimate of 830 (119–2894) individuals over the study area. These results provide an important baseline against which to compare future changes in seal distribution and abundance. |
format |
Article in Journal/Newspaper |
author |
Gurarie, Eliezer Bengtson, John L. Bester, Marthán N. Blix, Arnoldus Schytte Cameron, Michael Bornemann, Horst Nordøy, Erling S. Plötz, Joachim Steinhage, Daniel Boveng, Peter |
spellingShingle |
Gurarie, Eliezer Bengtson, John L. Bester, Marthán N. Blix, Arnoldus Schytte Cameron, Michael Bornemann, Horst Nordøy, Erling S. Plötz, Joachim Steinhage, Daniel Boveng, Peter Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea |
author_facet |
Gurarie, Eliezer Bengtson, John L. Bester, Marthán N. Blix, Arnoldus Schytte Cameron, Michael Bornemann, Horst Nordøy, Erling S. Plötz, Joachim Steinhage, Daniel Boveng, Peter |
author_sort |
Gurarie, Eliezer |
title |
Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea |
title_short |
Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea |
title_full |
Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea |
title_fullStr |
Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea |
title_full_unstemmed |
Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea |
title_sort |
distribution, density and abundance of antarctic ice seals off queen maud land and the eastern weddell sea |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/41693/ https://epic.awi.de/id/eprint/41693/1/Gurarie-etal_2017.pdf https://doi.org/10.1007/s00300-016-2029-4 https://hdl.handle.net/10013/epic.48568 https://hdl.handle.net/10013/epic.48568.d001 |
genre |
Antarc* Antarctic Crabeater Seal Crabeater Seals Hydrurga leptonyx Leopard Seal Leopard Seals Polar Biology Queen Maud Land Ross Seal Southern Ocean Weddell Sea Weddell Seal Weddell Seals |
genre_facet |
Antarc* Antarctic Crabeater Seal Crabeater Seals Hydrurga leptonyx Leopard Seal Leopard Seals Polar Biology Queen Maud Land Ross Seal Southern Ocean Weddell Sea Weddell Seal Weddell Seals |
op_source |
EPIC3Polar Biology, 40(5), pp. 1149-1165, ISSN: 0722-4060 |
op_relation |
https://epic.awi.de/id/eprint/41693/1/Gurarie-etal_2017.pdf https://hdl.handle.net/10013/epic.48568.d001 Gurarie, E. , Bengtson, J. L. , Bester, M. N. , Blix, A. S. , Cameron, M. , Bornemann, H. , Nordøy, E. S. , Plötz, J. , Steinhage, D. orcid:0000-0003-4737-9751 and Boveng, P. (2017) Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea , Polar Biology, 40 (5), pp. 1149-1165 . doi:10.1007/s00300-016-2029-4 <https://doi.org/10.1007/s00300-016-2029-4> , hdl:10013/epic.48568 |
op_doi |
https://doi.org/10.1007/s00300-016-2029-4 |
container_title |
Polar Biology |
container_volume |
40 |
container_issue |
5 |
container_start_page |
1149 |
op_container_end_page |
1165 |
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1810487266584297472 |