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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Bibliographic Details
Main Authors: Gurarie, Eliezer, Bengtson, John L, Bester, Marthán Nieuwoudt, Blix, Arnoldus Schytte, Cameron, Michael, Bornemann, Horst, Nordøy, Erling Sverre, Plötz, Joachim, Steinhage, Daniel, Boveng, Peter
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2016
Subjects:
Marine Mammal Tracking MMT
Antarc*
Antarctic
Crabeater Seal
Crabeater Seals
Hydrurga leptonyx
Leopard Seal
Queen Maud Land
Ross Seal
Southern Ocean
Weddell Sea
Weddell Seal
Online Access:https://dx.doi.org/10.1594/pangaea.864582
https://doi.pangaea.de/10.1594/PANGAEA.864582
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Summary: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 ... : 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 ...

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