Physiological response of the cold-water coral Desmophyllum dianthus to thermal stress and ocean acidification
Rising temperatures and ocean acidification driven by anthropogenic carbon emissions threaten both tropical and temperate corals. However, the synergistic effect of these stressors on coral physiology is still poorly understood, in particular for cold-water corals. This study assessed changes in key...
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ftdoajarticles:oai:doaj.org/article:eb9879a8b77e45c2a98d6e788f2932df 2024-01-07T09:45:38+01:00 Physiological response of the cold-water coral Desmophyllum dianthus to thermal stress and ocean acidification Andrea Gori Christine Ferrier-Pagès Sebastian J. Hennige Fiona Murray Cécile Rottier Laura C. Wicks J. Murray Roberts 2016-02-01T00:00:00Z https://doi.org/10.7717/peerj.1606 https://doaj.org/article/eb9879a8b77e45c2a98d6e788f2932df EN eng PeerJ Inc. https://peerj.com/articles/1606.pdf https://peerj.com/articles/1606/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.1606 2167-8359 https://doaj.org/article/eb9879a8b77e45c2a98d6e788f2932df PeerJ, Vol 4, p e1606 (2016) Cold-water corals Thermal stress Ocean acidification Coral calcification Coral respiration Coral excretion Medicine R Biology (General) QH301-705.5 article 2016 ftdoajarticles https://doi.org/10.7717/peerj.1606 2023-12-10T01:53:51Z Rising temperatures and ocean acidification driven by anthropogenic carbon emissions threaten both tropical and temperate corals. However, the synergistic effect of these stressors on coral physiology is still poorly understood, in particular for cold-water corals. This study assessed changes in key physiological parameters (calcification, respiration and ammonium excretion) of the widespread cold-water coral Desmophyllum dianthus maintained for ∼8 months at two temperatures (ambient 12 °C and elevated 15 °C) and two pCO2 conditions (ambient 390 ppm and elevated 750 ppm). At ambient temperatures no change in instantaneous calcification, respiration or ammonium excretion rates was observed at either pCO2 levels. Conversely, elevated temperature (15 °C) significantly reduced calcification rates, and combined elevated temperature and pCO2 significantly reduced respiration rates. Changes in the ratio of respired oxygen to excreted nitrogen (O:N), which provides information on the main sources of energy being metabolized, indicated a shift from mixed use of protein and carbohydrate/lipid as metabolic substrates under control conditions, to less efficient protein-dominated catabolism under both stressors. Overall, this study shows that the physiology of D. dianthus is more sensitive to thermal than pCO2 stress, and that the predicted combination of rising temperatures and ocean acidification in the coming decades may severely impact this cold-water coral species. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles PeerJ 4 e1606 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Cold-water corals Thermal stress Ocean acidification Coral calcification Coral respiration Coral excretion Medicine R Biology (General) QH301-705.5 |
spellingShingle |
Cold-water corals Thermal stress Ocean acidification Coral calcification Coral respiration Coral excretion Medicine R Biology (General) QH301-705.5 Andrea Gori Christine Ferrier-Pagès Sebastian J. Hennige Fiona Murray Cécile Rottier Laura C. Wicks J. Murray Roberts Physiological response of the cold-water coral Desmophyllum dianthus to thermal stress and ocean acidification |
topic_facet |
Cold-water corals Thermal stress Ocean acidification Coral calcification Coral respiration Coral excretion Medicine R Biology (General) QH301-705.5 |
description |
Rising temperatures and ocean acidification driven by anthropogenic carbon emissions threaten both tropical and temperate corals. However, the synergistic effect of these stressors on coral physiology is still poorly understood, in particular for cold-water corals. This study assessed changes in key physiological parameters (calcification, respiration and ammonium excretion) of the widespread cold-water coral Desmophyllum dianthus maintained for ∼8 months at two temperatures (ambient 12 °C and elevated 15 °C) and two pCO2 conditions (ambient 390 ppm and elevated 750 ppm). At ambient temperatures no change in instantaneous calcification, respiration or ammonium excretion rates was observed at either pCO2 levels. Conversely, elevated temperature (15 °C) significantly reduced calcification rates, and combined elevated temperature and pCO2 significantly reduced respiration rates. Changes in the ratio of respired oxygen to excreted nitrogen (O:N), which provides information on the main sources of energy being metabolized, indicated a shift from mixed use of protein and carbohydrate/lipid as metabolic substrates under control conditions, to less efficient protein-dominated catabolism under both stressors. Overall, this study shows that the physiology of D. dianthus is more sensitive to thermal than pCO2 stress, and that the predicted combination of rising temperatures and ocean acidification in the coming decades may severely impact this cold-water coral species. |
format |
Article in Journal/Newspaper |
author |
Andrea Gori Christine Ferrier-Pagès Sebastian J. Hennige Fiona Murray Cécile Rottier Laura C. Wicks J. Murray Roberts |
author_facet |
Andrea Gori Christine Ferrier-Pagès Sebastian J. Hennige Fiona Murray Cécile Rottier Laura C. Wicks J. Murray Roberts |
author_sort |
Andrea Gori |
title |
Physiological response of the cold-water coral Desmophyllum dianthus to thermal stress and ocean acidification |
title_short |
Physiological response of the cold-water coral Desmophyllum dianthus to thermal stress and ocean acidification |
title_full |
Physiological response of the cold-water coral Desmophyllum dianthus to thermal stress and ocean acidification |
title_fullStr |
Physiological response of the cold-water coral Desmophyllum dianthus to thermal stress and ocean acidification |
title_full_unstemmed |
Physiological response of the cold-water coral Desmophyllum dianthus to thermal stress and ocean acidification |
title_sort |
physiological response of the cold-water coral desmophyllum dianthus to thermal stress and ocean acidification |
publisher |
PeerJ Inc. |
publishDate |
2016 |
url |
https://doi.org/10.7717/peerj.1606 https://doaj.org/article/eb9879a8b77e45c2a98d6e788f2932df |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
PeerJ, Vol 4, p e1606 (2016) |
op_relation |
https://peerj.com/articles/1606.pdf https://peerj.com/articles/1606/ https://doaj.org/toc/2167-8359 doi:10.7717/peerj.1606 2167-8359 https://doaj.org/article/eb9879a8b77e45c2a98d6e788f2932df |
op_doi |
https://doi.org/10.7717/peerj.1606 |
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PeerJ |
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4 |
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e1606 |
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1787427214485094400 |