Seasonal variation modulates coral sensibility to heat-stress and explains annual changes in coral productivity

Abstract The potential effects of seasonal acclimatization on coral sensitivity to heat-stress, has received limited attention despite differing bleaching thresholds for summer and winter. In this study, we examined the response of two contrasting phenotypes, termed winter and summer, of four Caribb...

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Autores principales:	Tim Scheufen, Wiebke E. Krämer, Roberto Iglesias-Prieto, Susana Enríquez
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bd8bde4f4c9944d682e5e5403f277596
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spelling	oai:doaj.org-article:bd8bde4f4c9944d682e5e5403f2775962021-12-02T11:52:56ZSeasonal variation modulates coral sensibility to heat-stress and explains annual changes in coral productivity10.1038/s41598-017-04927-82045-2322https://doaj.org/article/bd8bde4f4c9944d682e5e5403f2775962017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04927-8https://doaj.org/toc/2045-2322Abstract The potential effects of seasonal acclimatization on coral sensitivity to heat-stress, has received limited attention despite differing bleaching thresholds for summer and winter. In this study, we examined the response of two contrasting phenotypes, termed winter and summer, of four Caribbean reef corals to similar light and heat-stress levels. The four species investigated were categorized into two groups: species with the ability to harbour large number of symbionts, Orbicella annularis and O. faveolata, and species with reduced symbiont density (Montastraea cavernosa and Pseudodiploria strigosa). The first group showed higher capacity to enhance photosynthetic rates per area (Pmax), while Pmax enhancement in the second group was more dependent on Symbiodinium performance (Psym). In summer all four species presented higher productivity, but also higher sensitivity to lose coral photosynthesis under heat-stress. In contrast, corals in winter exhibit symbionts with higher capacity to photoacclimate to the increased levels of light-stress elicited by heat-stress. Overall, our study supports the importance of the acclimatory coral condition in addition to the previous thermal history, to determine the severity of the impact of heat-stress on coral physiology, but also the dependence of this response on the particular structural and functional traits of the species.Tim ScheufenWiebke E. KrämerRoberto Iglesias-PrietoSusana EnríquezNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-15 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tim Scheufen Wiebke E. Krämer Roberto Iglesias-Prieto Susana Enríquez Seasonal variation modulates coral sensibility to heat-stress and explains annual changes in coral productivity
description	Abstract The potential effects of seasonal acclimatization on coral sensitivity to heat-stress, has received limited attention despite differing bleaching thresholds for summer and winter. In this study, we examined the response of two contrasting phenotypes, termed winter and summer, of four Caribbean reef corals to similar light and heat-stress levels. The four species investigated were categorized into two groups: species with the ability to harbour large number of symbionts, Orbicella annularis and O. faveolata, and species with reduced symbiont density (Montastraea cavernosa and Pseudodiploria strigosa). The first group showed higher capacity to enhance photosynthetic rates per area (Pmax), while Pmax enhancement in the second group was more dependent on Symbiodinium performance (Psym). In summer all four species presented higher productivity, but also higher sensitivity to lose coral photosynthesis under heat-stress. In contrast, corals in winter exhibit symbionts with higher capacity to photoacclimate to the increased levels of light-stress elicited by heat-stress. Overall, our study supports the importance of the acclimatory coral condition in addition to the previous thermal history, to determine the severity of the impact of heat-stress on coral physiology, but also the dependence of this response on the particular structural and functional traits of the species.
format	article
author	Tim Scheufen Wiebke E. Krämer Roberto Iglesias-Prieto Susana Enríquez
author_facet	Tim Scheufen Wiebke E. Krämer Roberto Iglesias-Prieto Susana Enríquez
author_sort	Tim Scheufen
title	Seasonal variation modulates coral sensibility to heat-stress and explains annual changes in coral productivity
title_short	Seasonal variation modulates coral sensibility to heat-stress and explains annual changes in coral productivity
title_full	Seasonal variation modulates coral sensibility to heat-stress and explains annual changes in coral productivity
title_fullStr	Seasonal variation modulates coral sensibility to heat-stress and explains annual changes in coral productivity
title_full_unstemmed	Seasonal variation modulates coral sensibility to heat-stress and explains annual changes in coral productivity
title_sort	seasonal variation modulates coral sensibility to heat-stress and explains annual changes in coral productivity
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/bd8bde4f4c9944d682e5e5403f277596
work_keys_str_mv	AT timscheufen seasonalvariationmodulatescoralsensibilitytoheatstressandexplainsannualchangesincoralproductivity AT wiebkeekramer seasonalvariationmodulatescoralsensibilitytoheatstressandexplainsannualchangesincoralproductivity AT robertoiglesiasprieto seasonalvariationmodulatescoralsensibilitytoheatstressandexplainsannualchangesincoralproductivity AT susanaenriquez seasonalvariationmodulatescoralsensibilitytoheatstressandexplainsannualchangesincoralproductivity
_version_	1718394949573017600

Seasonal variation modulates coral sensibility to heat-stress and explains annual changes in coral productivity

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