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Important marine habitat off east Antarctica revealed by two decades of multi-species predator tracking

Citation

Raymond, B and Lea, MA and Patterson, T and Andrews-Goff, V and Sharples, R and Charrassin, JB and Cottin, M and Emmerson, L and Gales, N and Gales, R and Goldworthy, SD and Harcourt, R and Kato, A and Kirkwood, R and Lawton, K and Ropert-Coudert, Y and Southwell, C and van den Hoff, Y and Wienecke, B and Woehler, E and Wotherspoon, S and Hindell, M, Important marine habitat off east Antarctica revealed by two decades of multi-species predator tracking, Ecography, 38, (2) pp. 121-129. ISSN 0906-7590 (2015) [Refereed Article]

Copyright Statement

Copyright 2014 Commonwealth of Australia. Ecography © 2014 Nordic Society Oikos

DOI: doi:10.1111/ecog.01021

Abstract

Satellite telemetry data are a key source of animal distribution information for marine ecosystem management and conservation activities. We used two decades of telemetry data from the East Antarctic sector of the Southern Ocean. Habitat utilization models for the spring/summer period were developed for six highly abundant, wide-ranging meso- and top-predator species: Adélie Pygoscelis adeliae and emperor Aptenodytes forsteri penguins, light-mantled albatross Phoebetria palpebrata, Antarctic fur seals Arctocephalus gazella, southern elephant seals Mirounga leonina, and Weddell seals Leptonychotes weddellii. The regional predictions from these models were combined to identify areas utilized by multiple species, and therefore likely to be of particular ecological significance. These areas were distributed across the longitudinal breadth of the East Antarctic sector, and were characterized by proximity to breeding colonies, both on the Antarctic continent and on subantarctic islands to the north, and by sea-ice dynamics, particularly locations of winter polynyas. These areas of important habitat were also congruent with many of the areas reported to be showing the strongest regional trends in sea ice seasonality. The results emphasize the importance of on-shore and sea-ice processes to Antarctic marine ecosystems. Our study provides ocean-basin-scale predictions of predator habitat utilization, an assessment of contemporary habitat use against which future changes can be assessed, and is of direct relevance to current conservation planning and spatial management efforts.

Item Details

Item Type:Refereed Article
Keywords:Southern Ocean, predator, ecosystem, habitat, sea ice, polynya
Research Division:Environmental Sciences
Research Group:Environmental Science and Management
Research Field:Wildlife and Habitat Management
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management of Antarctic and Sub-Antarctic Environments
Author:Raymond, B (Dr Ben Raymond)
Author:Lea, MA (Associate Professor Mary-Anne Lea)
Author:Sharples, R (Dr Ruth Sharples)
Author:Woehler, E (Dr Eric Woehler)
Author:Wotherspoon, S (Dr Simon Wotherspoon)
Author:Hindell, M (Professor Mark Hindell)
ID Code:95920
Year Published:2015 (online first 2014)
Web of Science® Times Cited:21
Deposited By:IMAS Research and Education Centre
Deposited On:2014-10-12
Last Modified:2015-07-30
Downloads:0

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