Heatwaves during low tide are critical for the physiological performance of intertidal macroalgae under global warming scenarios

Abstract The abundance and distribution of intertidal canopy-forming macroalgae are threatened by the increase in sea surface temperature and in the frequency and intensity of heatwaves caused by global warming. This study evaluated the physiological response of predominant intertidal macroalgae in...

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Autores principales:	Marta Román, Salvador Román, Elsa Vázquez, Jesús Troncoso, Celia Olabarria
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d10a7fa9a63a44f4b6a6336b5ab40093
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spelling	oai:doaj.org-article:d10a7fa9a63a44f4b6a6336b5ab400932021-12-02T15:11:52ZHeatwaves during low tide are critical for the physiological performance of intertidal macroalgae under global warming scenarios10.1038/s41598-020-78526-52045-2322https://doaj.org/article/d10a7fa9a63a44f4b6a6336b5ab400932020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78526-5https://doaj.org/toc/2045-2322Abstract The abundance and distribution of intertidal canopy-forming macroalgae are threatened by the increase in sea surface temperature and in the frequency and intensity of heatwaves caused by global warming. This study evaluated the physiological response of predominant intertidal macroalgae in the NW Iberian Peninsula (Bifurcaria bifurcata, Cystoseira tamariscifolia and Codium tomentosum) to increased seawater temperature during immersion and increased air temperatures during consecutive emersion cycles. We combined field mensuration and laboratory experiments in which we measured mortality, growth, maximum quantum yield and C:N content of the macroalgae. Air temperature was a critical factor in determining physiological responses and survivorship of all species, whereas high seawater temperature had sublethal effects. Cystoseira tamariscifolia suffered the greatest decreases in Fv/Fm, growth and the highest mortality under higher air temperatures, whereas C. tomentosum was the most resistant and resilient species. Two consecutive cycles of emersion under atmospheric heatwaves caused cumulative stress in all three macroalgae, affecting the physiological performance and increasing the mortality. The potential expansion of the warm-temperate species B. bifurcata, C. tamariscifolia and C. tomentosum in the NW Iberian Peninsula in response to increasing seawater temperature may be affected by the impact of increased air temperature, especially in a region where the incidence of atmospheric heatwaves is expected to increase.Marta RománSalvador RománElsa VázquezJesús TroncosoCelia OlabarriaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-14 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marta Román Salvador Román Elsa Vázquez Jesús Troncoso Celia Olabarria Heatwaves during low tide are critical for the physiological performance of intertidal macroalgae under global warming scenarios
description	Abstract The abundance and distribution of intertidal canopy-forming macroalgae are threatened by the increase in sea surface temperature and in the frequency and intensity of heatwaves caused by global warming. This study evaluated the physiological response of predominant intertidal macroalgae in the NW Iberian Peninsula (Bifurcaria bifurcata, Cystoseira tamariscifolia and Codium tomentosum) to increased seawater temperature during immersion and increased air temperatures during consecutive emersion cycles. We combined field mensuration and laboratory experiments in which we measured mortality, growth, maximum quantum yield and C:N content of the macroalgae. Air temperature was a critical factor in determining physiological responses and survivorship of all species, whereas high seawater temperature had sublethal effects. Cystoseira tamariscifolia suffered the greatest decreases in Fv/Fm, growth and the highest mortality under higher air temperatures, whereas C. tomentosum was the most resistant and resilient species. Two consecutive cycles of emersion under atmospheric heatwaves caused cumulative stress in all three macroalgae, affecting the physiological performance and increasing the mortality. The potential expansion of the warm-temperate species B. bifurcata, C. tamariscifolia and C. tomentosum in the NW Iberian Peninsula in response to increasing seawater temperature may be affected by the impact of increased air temperature, especially in a region where the incidence of atmospheric heatwaves is expected to increase.
format	article
author	Marta Román Salvador Román Elsa Vázquez Jesús Troncoso Celia Olabarria
author_facet	Marta Román Salvador Román Elsa Vázquez Jesús Troncoso Celia Olabarria
author_sort	Marta Román
title	Heatwaves during low tide are critical for the physiological performance of intertidal macroalgae under global warming scenarios
title_short	Heatwaves during low tide are critical for the physiological performance of intertidal macroalgae under global warming scenarios
title_full	Heatwaves during low tide are critical for the physiological performance of intertidal macroalgae under global warming scenarios
title_fullStr	Heatwaves during low tide are critical for the physiological performance of intertidal macroalgae under global warming scenarios
title_full_unstemmed	Heatwaves during low tide are critical for the physiological performance of intertidal macroalgae under global warming scenarios
title_sort	heatwaves during low tide are critical for the physiological performance of intertidal macroalgae under global warming scenarios
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/d10a7fa9a63a44f4b6a6336b5ab40093
work_keys_str_mv	AT martaroman heatwavesduringlowtidearecriticalforthephysiologicalperformanceofintertidalmacroalgaeunderglobalwarmingscenarios AT salvadorroman heatwavesduringlowtidearecriticalforthephysiologicalperformanceofintertidalmacroalgaeunderglobalwarmingscenarios AT elsavazquez heatwavesduringlowtidearecriticalforthephysiologicalperformanceofintertidalmacroalgaeunderglobalwarmingscenarios AT jesustroncoso heatwavesduringlowtidearecriticalforthephysiologicalperformanceofintertidalmacroalgaeunderglobalwarmingscenarios AT celiaolabarria heatwavesduringlowtidearecriticalforthephysiologicalperformanceofintertidalmacroalgaeunderglobalwarmingscenarios
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Heatwaves during low tide are critical for the physiological performance of intertidal macroalgae under global warming scenarios

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