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 r...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.864582 2023-05-15T13:44:47+02:00 Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea Gurarie, Eliezer Bengtson, John L Bester, Marthán Nieuwoudt Blix, Arnoldus Schytte Cameron, Michael Bornemann, Horst Nordøy, Erling Sverre Plötz, Joachim Steinhage, Daniel Boveng, Peter MEDIAN LATITUDE: -69.290911 * MEDIAN LONGITUDE: -14.873661 * SOUTH-BOUND LATITUDE: -73.899833 * WEST-BOUND LONGITUDE: -45.550500 * NORTH-BOUND LATITUDE: -62.062833 * EAST-BOUND LONGITUDE: 4.330100 * DATE/TIME START: 1970-01-01T00:00:00 * DATE/TIME END: 2001-01-12T14:55:12 2016-09-13 application/zip, 7 datasets https://doi.pangaea.de/10.1594/PANGAEA.864582 https://doi.org/10.1594/PANGAEA.864582 en eng PANGAEA Gurarie, Eliezer; Bester, Marthán Nieuwoudt; Blix, Arnoldus Schytte; Cameron, Michael; Bornemann, Horst; Nordøy, Erling Sverre; Plötz, Joachim; Steinhage, Daniel; Boveng, Peter (2016): Erratum to: Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea. Polar Biology, 40(5), 1167-1168, https://doi.org/10.1007/s00300-016-2050-7 https://doi.pangaea.de/10.1594/PANGAEA.864582 https://doi.org/10.1594/PANGAEA.864582 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Gurarie, Eliezer; Bengtson, John L; Bester, Marthán Nieuwoudt; Blix, Arnoldus Schytte; Cameron, Michael; Bornemann, Horst; Nordøy, Erling Sverre; Plötz, Joachim; Steinhage, Daniel; Boveng, Peter (2016): Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea. Polar Biology, 40(5), 1149-1165, https://doi.org/10.1007/s00300-016-2029-4 Marine Mammal Tracking MMT Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.864582 https://doi.org/10.1007/s00300-016-2029-4 https://doi.org/10.1007/s00300-016-2050-7 2023-01-20T07:33:46Z 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) x 10**3 crabeater seals, 60.0 (43.2-94.4) x 10**3 Weddell seals and 13.2 (5.50-39.7) x 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. Dataset 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 PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Southern Ocean The Antarctic Weddell Sea Austral Pacific Norway Indian Weddell Queen Maud Land ENVELOPE(12.000,12.000,-72.500,-72.500) Hydrurga ENVELOPE(-61.626,-61.626,-64.145,-64.145) ENVELOPE(-45.550500,4.330100,-62.062833,-73.899833) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Marine Mammal Tracking MMT |
spellingShingle |
Marine Mammal Tracking MMT Gurarie, Eliezer Bengtson, John L Bester, Marthán Nieuwoudt Blix, Arnoldus Schytte Cameron, Michael Bornemann, Horst Nordøy, Erling Sverre Plötz, Joachim Steinhage, Daniel Boveng, Peter Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea |
topic_facet |
Marine Mammal Tracking MMT |
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) x 10**3 crabeater seals, 60.0 (43.2-94.4) x 10**3 Weddell seals and 13.2 (5.50-39.7) x 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 |
Dataset |
author |
Gurarie, Eliezer Bengtson, John L Bester, Marthán Nieuwoudt Blix, Arnoldus Schytte Cameron, Michael Bornemann, Horst Nordøy, Erling Sverre Plötz, Joachim Steinhage, Daniel Boveng, Peter |
author_facet |
Gurarie, Eliezer Bengtson, John L Bester, Marthán Nieuwoudt Blix, Arnoldus Schytte Cameron, Michael Bornemann, Horst Nordøy, Erling Sverre 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 |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.864582 https://doi.org/10.1594/PANGAEA.864582 |
op_coverage |
MEDIAN LATITUDE: -69.290911 * MEDIAN LONGITUDE: -14.873661 * SOUTH-BOUND LATITUDE: -73.899833 * WEST-BOUND LONGITUDE: -45.550500 * NORTH-BOUND LATITUDE: -62.062833 * EAST-BOUND LONGITUDE: 4.330100 * DATE/TIME START: 1970-01-01T00:00:00 * DATE/TIME END: 2001-01-12T14:55:12 |
long_lat |
ENVELOPE(12.000,12.000,-72.500,-72.500) ENVELOPE(-61.626,-61.626,-64.145,-64.145) ENVELOPE(-45.550500,4.330100,-62.062833,-73.899833) |
geographic |
Antarctic Southern Ocean The Antarctic Weddell Sea Austral Pacific Norway Indian Weddell Queen Maud Land Hydrurga |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell Sea Austral Pacific Norway Indian Weddell Queen Maud Land Hydrurga |
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 |
Supplement to: Gurarie, Eliezer; Bengtson, John L; Bester, Marthán Nieuwoudt; Blix, Arnoldus Schytte; Cameron, Michael; Bornemann, Horst; Nordøy, Erling Sverre; Plötz, Joachim; Steinhage, Daniel; Boveng, Peter (2016): Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea. Polar Biology, 40(5), 1149-1165, https://doi.org/10.1007/s00300-016-2029-4 |
op_relation |
Gurarie, Eliezer; Bester, Marthán Nieuwoudt; Blix, Arnoldus Schytte; Cameron, Michael; Bornemann, Horst; Nordøy, Erling Sverre; Plötz, Joachim; Steinhage, Daniel; Boveng, Peter (2016): Erratum to: Distribution, density and abundance of Antarctic ice seals off Queen Maud Land and the eastern Weddell Sea. Polar Biology, 40(5), 1167-1168, https://doi.org/10.1007/s00300-016-2050-7 https://doi.pangaea.de/10.1594/PANGAEA.864582 https://doi.org/10.1594/PANGAEA.864582 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.864582 https://doi.org/10.1007/s00300-016-2029-4 https://doi.org/10.1007/s00300-016-2050-7 |
_version_ |
1766206458452508672 |