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Potential feeding and spawning habitats of Atlantic bluefin tuna in the Mediterranean Sea ArchiMer
Druon, Jean-noel; Fromentin, Jean-marc; Aulanier, Florian; Heikkonen, Jukka.
Atlantic bluefin tuna Thunnus thynnus (ABFT) is a fish of high market value which has recently become strongly overexploited, notably in the Mediterranean Sea. This area is an essential habitat for ABFT reproduction and growth. We present here an approach for deriving the daily mapping of potential ABFT feeding and spawning habitats based on satellite-derived sea surface temperature (SST) and chl a concentration. The feeding habitat was mainly derived from the simultaneous occurrence of oceanic fronts of temperature and chl a content while the spawning habitat was mostly inferred from the heating of surface waters. Generally, higher chl a contents were found to be preferred for the feeding habitat and a minimum SST value was found for the spawning habitat....
Tipo: Text Palavras-chave: Habitat mapping; Bluefin tuna; Thunnus thynnus; Feeding; Spawning; Mediterranean Sea; Remote sensing; Satellite data.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00049/16053/13549.pdf
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