Thermal stratification drives movement of a coastal apex predator

Show simple item record Aspillaga, Eneko Bartumeus, Frederic Starr, Richard M. López-Sanz, Ángel Linares, Cristina Díaz, David Garrabou, Joaquim Zabala, Mikel Hereu, Bernat 2019-11-05T12:30:08Z 2019-11-05T12:30:08Z
dc.description.abstract [eng] A characterization of the thermal ecology of fishes is needed to better understand changes in ecosystems and species distributions arising from global warming. The movement of wild animals during changing environmental conditions provides essential information to help predict the future thermal response of large marine predators. We used acoustic telemetry to monitor the vertical movement activity of the common dentex (Dentex dentex), a Mediterranean coastal predator, in relation to the oscillations of the seasonal thermocline during two summer periods in the Medes Islands marine reserve (NW Mediterranean Sea). During the summer stratification period, the common dentex presented a clear preference for the warm suprathermoclinal layer, and adjusted their vertical movements following the depth changes of the thermocline. The same preference was also observed during the night, when fish were less active. Due to this behaviour, we hypothesize that inter-annual thermal oscillations and the predicted lengthening of summer conditions will have a significant positive impact on the metabolic efficiency, activity levels, and population dynamics of this species, particularly in its northern limit of distribution. These changes in the dynamics of an ecosystem's keystone predator might cascade down to lower trophic levels, potentially re-defining the coastal fish communities of the future.
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dc.relation.isformatof Reproducció del document publicat a:
dc.relation.ispartof Scientific Reports, 2017, vol. 1, num. 10, p. 7-526
dc.rights cc-by (c) Aspillaga, Eneko et al., 2017
dc.subject.classification 55 - Geologia. Meteorologia
dc.subject.other 55 - Earth sciences. Geological sciences
dc.title Thermal stratification drives movement of a coastal apex predator
dc.type info:eu-repo/semantics/article
dc.type info:eu-repo/semantics/publishedVersion 2019-11-05T12:30:08Z
dc.rights.accessRights info:eu-repo/semantics/openAccess

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cc-by (c) Aspillaga, Eneko et al., 2017 Except where otherwise noted, this item's license is described as cc-by (c) Aspillaga, Eneko et al., 2017