Tracking the effect of temperature in marine demersal fish communities

Under current levels of global warming most demersal species in the Northeast Atlantic are experiencing tropicalization, meridionalization or borealization of their distributions, leading to profound changes in demersal communities. We explore these changes using the Community Weighted Mean Temperat...

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Autores principales:	Antonio Punzón, Lucía López-López, José Manuel González-Irusta, Izaskun Preciado, Manuel Hidalgo, Alberto Serrano, Elena Tel, Raquel Somavilla, Julia Polo, Marian Blanco, Susana Ruiz-Pico, Olaya Fernández-Zapico, Francisco Velasco, Enric Massuti
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Community Weighted Mean Temperature Temperature Climate change Demersal fish community Temperate ecosystem Thermal niche Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/d3cf96db1ef7477fa41d73b0783f0aa1
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spelling	oai:doaj.org-article:d3cf96db1ef7477fa41d73b0783f0aa12021-12-01T04:36:38ZTracking the effect of temperature in marine demersal fish communities1470-160X10.1016/j.ecolind.2020.107142https://doaj.org/article/d3cf96db1ef7477fa41d73b0783f0aa12021-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20310815https://doaj.org/toc/1470-160XUnder current levels of global warming most demersal species in the Northeast Atlantic are experiencing tropicalization, meridionalization or borealization of their distributions, leading to profound changes in demersal communities. We explore these changes using the Community Weighted Mean Temperature (CWMT), an index to link the thermal preference of demersal fish communities and temperature. The CWMT is calculated as the summation of the mean temperature of each fish species distribution weighted by its relative abundance in the community. The relative abundance is based on the community composition data obtained by the International Bottom Trawl Surveys (IBTS) in the Southern Bay of Biscay between 1983 and 2015. Our analyses show that the CWMT responds to the actual temperature of the water column reproducing its space–time trends in the study area: (i) an increase from SW to NE, towards the inner Bay of Biscay, (ii) a decrease with depth, except in the SW area characterized by an intense upwelling, (iii) a general increase along the time series. Applying a k-means classification to the CWMT data we identified warm-, temperate- and cold-communities over the shelf and slope and their spatial changes in the last decades. The area occupied by warm communities has expanded 268.4 km2/yr since the 80 s, while the cold communities have retracted at a speed of −155.4 km2/yr. The CWMT was able to capture the community dynamics in relation to environmental temperature at different temporal and spatial scales, highlighting the potential of this index to explore and anticipate the effects of climate change in demersal communities under different scenarios of global warming.Antonio PunzónLucía López-LópezJosé Manuel González-IrustaIzaskun PreciadoManuel HidalgoAlberto SerranoElena TelRaquel SomavillaJulia PoloMarian BlancoSusana Ruiz-PicoOlaya Fernández-ZapicoFrancisco VelascoEnric MassutiElsevierarticleCommunity Weighted Mean TemperatureTemperatureClimate changeDemersal fish communityTemperate ecosystemThermal nicheEcologyQH540-549.5ENEcological Indicators, Vol 121, Iss , Pp 107142- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Community Weighted Mean Temperature Temperature Climate change Demersal fish community Temperate ecosystem Thermal niche Ecology QH540-549.5
spellingShingle	Community Weighted Mean Temperature Temperature Climate change Demersal fish community Temperate ecosystem Thermal niche Ecology QH540-549.5 Antonio Punzón Lucía López-López José Manuel González-Irusta Izaskun Preciado Manuel Hidalgo Alberto Serrano Elena Tel Raquel Somavilla Julia Polo Marian Blanco Susana Ruiz-Pico Olaya Fernández-Zapico Francisco Velasco Enric Massuti Tracking the effect of temperature in marine demersal fish communities
description	Under current levels of global warming most demersal species in the Northeast Atlantic are experiencing tropicalization, meridionalization or borealization of their distributions, leading to profound changes in demersal communities. We explore these changes using the Community Weighted Mean Temperature (CWMT), an index to link the thermal preference of demersal fish communities and temperature. The CWMT is calculated as the summation of the mean temperature of each fish species distribution weighted by its relative abundance in the community. The relative abundance is based on the community composition data obtained by the International Bottom Trawl Surveys (IBTS) in the Southern Bay of Biscay between 1983 and 2015. Our analyses show that the CWMT responds to the actual temperature of the water column reproducing its space–time trends in the study area: (i) an increase from SW to NE, towards the inner Bay of Biscay, (ii) a decrease with depth, except in the SW area characterized by an intense upwelling, (iii) a general increase along the time series. Applying a k-means classification to the CWMT data we identified warm-, temperate- and cold-communities over the shelf and slope and their spatial changes in the last decades. The area occupied by warm communities has expanded 268.4 km2/yr since the 80 s, while the cold communities have retracted at a speed of −155.4 km2/yr. The CWMT was able to capture the community dynamics in relation to environmental temperature at different temporal and spatial scales, highlighting the potential of this index to explore and anticipate the effects of climate change in demersal communities under different scenarios of global warming.
format	article
author	Antonio Punzón Lucía López-López José Manuel González-Irusta Izaskun Preciado Manuel Hidalgo Alberto Serrano Elena Tel Raquel Somavilla Julia Polo Marian Blanco Susana Ruiz-Pico Olaya Fernández-Zapico Francisco Velasco Enric Massuti
author_facet	Antonio Punzón Lucía López-López José Manuel González-Irusta Izaskun Preciado Manuel Hidalgo Alberto Serrano Elena Tel Raquel Somavilla Julia Polo Marian Blanco Susana Ruiz-Pico Olaya Fernández-Zapico Francisco Velasco Enric Massuti
author_sort	Antonio Punzón
title	Tracking the effect of temperature in marine demersal fish communities
title_short	Tracking the effect of temperature in marine demersal fish communities
title_full	Tracking the effect of temperature in marine demersal fish communities
title_fullStr	Tracking the effect of temperature in marine demersal fish communities
title_full_unstemmed	Tracking the effect of temperature in marine demersal fish communities
title_sort	tracking the effect of temperature in marine demersal fish communities
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/d3cf96db1ef7477fa41d73b0783f0aa1
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Tracking the effect of temperature in marine demersal fish communities

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