Abstract


CLIMATE DRIVEN HABITAT SHIFTS FOR COMMERCIALLY VALUABLE TUNAS?

Commercially valuable tunas have preferred habitat ranges. The preferred habitats of tuna species are subject to spatial shifts due to climate change. In fact, some local studies in the north Atlantic suggest that the distribution ranges might be shifting towards higher latitudes. In this study we analyze whether this is a global pattern for commercially valuable tunas. We use two main sources of information: on one hand, we use pelagic longline catch per unit of effort data as a proxy for tuna abundance, and on the other hand, we use habitat models to predict the temporal evolution of the optimum habitat distribution. Results are summarized regionally as well as taxonomically.

Authors

Arrizabalaga, H., AZTI, Spain, harri@azti.es

Dufour, F., AZTI, Spain, dufour.florence@gmail.com

Details

Oral presentation

Session #:007
Date: 2/25/2015
Time: 15:45
Location: Albeniz (Floor -2)

Presentation is given by student: No