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Seasonal winds drive water temperature cycle and migration patterns of Southern Australian giant crab Pseudocarcinus gigas

conference contribution
posted on 2010-01-01, 00:00 authored by Andrew Levings, Peter Gill
The giant crab Pseudocarcinus gigas occurs along the continental shelf break of southern Australia. During the summer alongshore winds cause cooler water to upwell onto the shelf, and the crabs move from deeper water onto the shelf where there is more food. The combination of a preferred thermal niche and a depth-stratified food supply defines the favorable foraging environments that enhance the growth of P. gigas. Climate change is expected to cause a southerly shift of the austral subtropical high-pressure belt, and modelers have predicted more upwelling-favorable winds. The associated increase in the circulation of cooler water across the shelf is likely to provide P. gigas with an increased access to benthic food resources and their growth rate may increase in some regions.

History

Event

Lowell Wakefield Fisheries Symposium (25th : 2009 : Anchorage, Alaska)

Series

25th Lowell Wakefield Fisheries Symposium

Pagination

461 - 478

Publisher

University of Alaska Fairbanks

Location

Anchorage, Alaska

Place of publication

Fairbanks, Alaska

Start date

2009-03-10

End date

2009-03-13

ISBN-13

9781566121545

Language

eng

Publication classification

E1 Full written paper - refereed

Copyright notice

2009, Alaska Sea Grant, University of Alaska Fairbanks

Editor/Contributor(s)

G Kruse, G Eckert, R Foy, R Lipcius, B Sainte-Marie, D Stram, D Woodby

Title of proceedings

Biology and Management of Exploited Crab Populations under Climate Change : 25th Lowell Wakefield Fisheries Symposium

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