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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Influence of oceanic factors on long-distance movements of loggerhead sea turtles displaced in the southwest Indian Ocean
Marine Biology, Volume 157, No. 2, Year 2010
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Description
The routes of five satellite-tracked loggerhead turtles (Caretta caretta), subjected to an experimental translocation away from their usual migratory routes, have been analysed in relation to the concurrent oceanographic conditions. Remote sensing data on sea surface temperature and height anomalies, as well as trajectories of surface drifters were used, to get simultaneous information on the currents encountered by the turtles during their long-range oceanic movements. Turtles mostly turned out to move in the same direction as the main currents, and their routes were often influenced by circulation features they encountered. A comparison between turtle ground speeds with that of drifters shows that in several instances, the turtles did not drift passively with the currents but contributed actively to the overall movement. Two turtles embarked on an oceanic crossing, probably induced by seasonal changes in surface temperatures, a crossing that was largely determined by the main currents existing in the area. © Springer-Verlag 2009.
Authors & Co-Authors
Mencacci, R.
Italy, Pisa
Università Di Pisa
De Bernardi, E.
Italy, Pisa
Università Di Pisa
Sale, A.
Italy, Rome
Consiglio Nazionale Delle Ricerche
Lutjeharms, Johann R.E.
South Africa, Cape Town
University of Cape Town
Luschi, P.
Italy, Pisa
Università Di Pisa
Statistics
Citations: 18
Authors: 5
Affiliations: 3
Identifiers
Doi:
10.1007/s00227-009-1321-z
ISSN:
00253162