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Foraging distribution overlap and marine reserve usage amongst sub-Antarctic predators inferred from a multi-species satellite tagging experiment

Citation

Patterson, TA and Sharples, RJ and Raymond, B and Welsford, DC and Andrews-Goff, V and Lea, MA and Goldsworthy, SD and Gales, NJ and Hindell, M, Foraging distribution overlap and marine reserve usage amongst sub-Antarctic predators inferred from a multi-species satellite tagging experiment, Ecological Indicators, 70 pp. 531-544. ISSN 1470-160X (2016) [Refereed Article]

Copyright Statement

Copyright 2016 Crown copyright. Published by Elsevier Ltd.

DOI: doi:10.1016/j.ecolind.2016.05.049

Abstract

Satellite telemetry data was used to predict at sea spatial usage of five top order and meso-predators; Antarctic fur seals (Arctocephalus gazella), macaroni penguins (Eudyptes chrysolophus), king penguins (Aptenodytes patagonicus), black browed albatross (Diomedea melanophrys), and light mantled albatross (Phoebetria palpebrata). All were tagged at Heard Island in the Southern Ocean over a single summer season collecting over 5000 tracking days for 178 individuals. We aimed to predict areas of likely high foraging value from tracking environmental data and also to quantify overlap in foraging range between species. Hidden Markov models were used to differentiate between bouts of Area Restricted Search (ARS) assumed to be associated with areas of higher foraging value, and transit behaviours. Oceanographic and distance metrics associated with ARS activity were then used to calculate a habitat electivity index. A combined bootstrap/Monte Carlo scheme was employed to propagate uncertainty from the Hidden Markov models into the habitat prediction scheme. Distinct differences were predicted in the spatial distribution of foraging locations in different species, reflecting different dispersive abilities and foraging strategy. The extent of usage and foraging distribution was largely contained within Australian the Economic Exclusion Zone (EEZ). In comparison, the smaller Australian Commonwealth Marine Protected Areas (MPAs) contained <20% of the predicted foraging distributions.

Item Details

Item Type:Refereed Article
Keywords:Antarctic, predator, habitat
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management of Antarctic and Sub-Antarctic Environments
Author:Sharples, RJ (Dr Ruth Sharples)
Author:Raymond, B (Dr Ben Raymond)
Author:Lea, MA (Associate Professor Mary-Anne Lea)
Author:Hindell, M (Professor Mark Hindell)
ID Code:113976
Year Published:2016
Deposited By:Centre for Ecology and Biodiversity
Deposited On:2017-02-01
Last Modified:2017-03-30
Downloads:0

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