Thermal stratification drives movement of a coastal apex predator

Abstract 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 the...

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Main Authors:	Eneko Aspillaga, Frederic Bartumeus, Richard M. Starr, Àngel López-Sanz, Cristina Linares, David Díaz, Joaquim Garrabou, Mikel Zabala, Bernat Hereu
Format:	article
Language:	EN
Published:	Nature Portfolio 2017
Subjects:	Medicine R Science Q
Online Access:	https://doaj.org/article/bcc6de83cfd34fc3a0fd0f18a86f7987
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spelling	oai:doaj.org-article:bcc6de83cfd34fc3a0fd0f18a86f79872021-12-02T12:32:40ZThermal stratification drives movement of a coastal apex predator10.1038/s41598-017-00576-z2045-2322https://doaj.org/article/bcc6de83cfd34fc3a0fd0f18a86f79872017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00576-zhttps://doaj.org/toc/2045-2322Abstract 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.Eneko AspillagaFrederic BartumeusRichard M. StarrÀngel López-SanzCristina LinaresDavid DíazJoaquim GarrabouMikel ZabalaBernat HereuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Eneko Aspillaga Frederic Bartumeus Richard M. Starr Àngel López-Sanz Cristina Linares David Díaz Joaquim Garrabou Mikel Zabala Bernat Hereu Thermal stratification drives movement of a coastal apex predator
description	Abstract 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.
format	article
author	Eneko Aspillaga Frederic Bartumeus Richard M. Starr Àngel López-Sanz Cristina Linares David Díaz Joaquim Garrabou Mikel Zabala Bernat Hereu
author_facet	Eneko Aspillaga Frederic Bartumeus Richard M. Starr Àngel López-Sanz Cristina Linares David Díaz Joaquim Garrabou Mikel Zabala Bernat Hereu
author_sort	Eneko Aspillaga
title	Thermal stratification drives movement of a coastal apex predator
title_short	Thermal stratification drives movement of a coastal apex predator
title_full	Thermal stratification drives movement of a coastal apex predator
title_fullStr	Thermal stratification drives movement of a coastal apex predator
title_full_unstemmed	Thermal stratification drives movement of a coastal apex predator
title_sort	thermal stratification drives movement of a coastal apex predator
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/bcc6de83cfd34fc3a0fd0f18a86f7987
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Thermal stratification drives movement of a coastal apex predator

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