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RESEARCH ARTICLE Scott A. Shaffer Yann Tremblay Jill A. Awkerman

Scott A. Shaffer Yann Tremblay Jill A. Awkerman
R. William Henry Steven L. H. Teo
David J. Anderson Donald A. Croll Barbara A. Block
Daniel P. Costa
Comparison of light- and SST-based geolocation with satellite telemetry
in free-ranging albatrosses
Received: 22 July 2004 / Accepted: 2 March 2005 / Published online: 26 May 2005
Springer-Verlag 2005
Abstract Light-based archival tags are increasingly
being used on free-ranging marine vertebrates to study
their movements using geolocation estimates. These
methods use algorithms that incorporate threshold light
techniques to determine longitude and latitude. More
recently, researchers have begun using sea surface tem-
perature (SST) to determine latitude in temperate re-
gions. The accuracy and application of these algorithms
have not been validated on free-ranging birds. Errors in
both geolocation methods were quantified by double-
tagging Laysan (Phoebastria immutabilisRothschild) and


Source: Anderson, David J. - Department of Biology, Wake Forest University


Collections: Environmental Sciences and Ecology