Asymmetric physiological response of a reef-building coral to pulsed versus continuous addition of inorganic nutrients

Abstract Coral reefs, especially those located near-shore, are increasingly exposed to anthropogenic, eutrophic conditions that are often chronic. Yet, corals under unperturbed conditions may frequently receive natural and usually temporary nutrient supplementation through biological sources such as...

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Autores principales:	Rene M. van der Zande, Yannick R. Mulders, Dorothea Bender-Champ, Ove Hoegh-Guldberg, Sophie Dove
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/26c2ff5ca45c464b8d2b8d7b794cdd25
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spelling	oai:doaj.org-article:26c2ff5ca45c464b8d2b8d7b794cdd252021-12-02T18:02:49ZAsymmetric physiological response of a reef-building coral to pulsed versus continuous addition of inorganic nutrients10.1038/s41598-021-92276-y2045-2322https://doaj.org/article/26c2ff5ca45c464b8d2b8d7b794cdd252021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-92276-yhttps://doaj.org/toc/2045-2322Abstract Coral reefs, especially those located near-shore, are increasingly exposed to anthropogenic, eutrophic conditions that are often chronic. Yet, corals under unperturbed conditions may frequently receive natural and usually temporary nutrient supplementation through biological sources such as fishes. We compared physiological parameters indicative of long- and short-term coral health (day and night calcification, fragment surface area, productivity, energy reserves, and tissue stoichiometry) under continuous and temporary nutrient enrichment. The symbiotic coral Acropora intermedia was grown for 7 weeks under continuously elevated (press) levels of ammonium (14 µmol L−1) and phosphate (10 µmol L−1) as separate and combined treatments, to discern the individual and interactive nutrient effects. Another treatment exposed A. intermedia twice-daily to an ammonium and phosphate pulse of the same concentrations as the press treatments to simulate natural biotic supplementation. Press exposure to elevated ammonium or phosphate produced mixed effects on physiological responses, with little interaction between the nutrients in the combined treatment. Overall, corals under press exposure transitioned resources away from calcification. However, exposure to nutrient pulses often enhanced physiological responses. Our findings indicate that while continuous nutrient enrichment may pose a threat to coral health, episodic nutrient pulses that resemble natural nutrient supplementation may significantly benefit coral health and physiology.Rene M. van der ZandeYannick R. MuldersDorothea Bender-ChampOve Hoegh-GuldbergSophie DoveNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rene M. van der Zande Yannick R. Mulders Dorothea Bender-Champ Ove Hoegh-Guldberg Sophie Dove Asymmetric physiological response of a reef-building coral to pulsed versus continuous addition of inorganic nutrients
description	Abstract Coral reefs, especially those located near-shore, are increasingly exposed to anthropogenic, eutrophic conditions that are often chronic. Yet, corals under unperturbed conditions may frequently receive natural and usually temporary nutrient supplementation through biological sources such as fishes. We compared physiological parameters indicative of long- and short-term coral health (day and night calcification, fragment surface area, productivity, energy reserves, and tissue stoichiometry) under continuous and temporary nutrient enrichment. The symbiotic coral Acropora intermedia was grown for 7 weeks under continuously elevated (press) levels of ammonium (14 µmol L−1) and phosphate (10 µmol L−1) as separate and combined treatments, to discern the individual and interactive nutrient effects. Another treatment exposed A. intermedia twice-daily to an ammonium and phosphate pulse of the same concentrations as the press treatments to simulate natural biotic supplementation. Press exposure to elevated ammonium or phosphate produced mixed effects on physiological responses, with little interaction between the nutrients in the combined treatment. Overall, corals under press exposure transitioned resources away from calcification. However, exposure to nutrient pulses often enhanced physiological responses. Our findings indicate that while continuous nutrient enrichment may pose a threat to coral health, episodic nutrient pulses that resemble natural nutrient supplementation may significantly benefit coral health and physiology.
format	article
author	Rene M. van der Zande Yannick R. Mulders Dorothea Bender-Champ Ove Hoegh-Guldberg Sophie Dove
author_facet	Rene M. van der Zande Yannick R. Mulders Dorothea Bender-Champ Ove Hoegh-Guldberg Sophie Dove
author_sort	Rene M. van der Zande
title	Asymmetric physiological response of a reef-building coral to pulsed versus continuous addition of inorganic nutrients
title_short	Asymmetric physiological response of a reef-building coral to pulsed versus continuous addition of inorganic nutrients
title_full	Asymmetric physiological response of a reef-building coral to pulsed versus continuous addition of inorganic nutrients
title_fullStr	Asymmetric physiological response of a reef-building coral to pulsed versus continuous addition of inorganic nutrients
title_full_unstemmed	Asymmetric physiological response of a reef-building coral to pulsed versus continuous addition of inorganic nutrients
title_sort	asymmetric physiological response of a reef-building coral to pulsed versus continuous addition of inorganic nutrients
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/26c2ff5ca45c464b8d2b8d7b794cdd25
work_keys_str_mv	AT renemvanderzande asymmetricphysiologicalresponseofareefbuildingcoraltopulsedversuscontinuousadditionofinorganicnutrients AT yannickrmulders asymmetricphysiologicalresponseofareefbuildingcoraltopulsedversuscontinuousadditionofinorganicnutrients AT dorotheabenderchamp asymmetricphysiologicalresponseofareefbuildingcoraltopulsedversuscontinuousadditionofinorganicnutrients AT ovehoeghguldberg asymmetricphysiologicalresponseofareefbuildingcoraltopulsedversuscontinuousadditionofinorganicnutrients AT sophiedove asymmetricphysiologicalresponseofareefbuildingcoraltopulsedversuscontinuousadditionofinorganicnutrients
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Asymmetric physiological response of a reef-building coral to pulsed versus continuous addition of inorganic nutrients

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