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Foraging strategy of a top predator in tropical waters: great frigatebirds in the Mozambique Channel ArchiMer
Weimerskirch, Henri; Le Corre, Matthieu; Jaquemet, Sébastien; Potier, Michel; Marsac, Francis.
Although oceanic tropical waters occupy almost 50% of the total area of pelagic oceans, knowledge of the foraging ecology of top predators in these low productivity waters is limitied. This is particularly the case for tropical seabirds that are believed to rely on scarce and unpredictable resources and have developed specific foraging strategies to exploit these resources. Frigatebirds are tropical seabirds that rely on subsurface predators such as tuna or cetaceans to feed. We studied the foraging strategy at sea of great frigatebirds breeding on Europa Island in the Mozambique Channel using satellite transmitters and altimeters. When foraging, birds moved at slow speeds (average 16.4 km h(-1)) and stayed at an average altitude of 180 m, continuously...
Tipo: Text Palavras-chave: Europa Island; Satellite transmitters; Altimeters; Flying-fish; Ommastrephid squids; Tunas.
Ano: 2004 URL: https://archimer.ifremer.fr/doc/00209/32069/30524.pdf
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