Skip to Main content Skip to Navigation
Journal articles

Coral calcification mechanisms in a warming ocean and the interactive effects of temperature and light

Abstract : Ocean warming is transforming the world's coral reefs, which are governed by the growth of marine calcifiers, most notably branching corals. Critical to skeletal growth is the corals' regulation of their internal chemistry to promote calcification. Here we investigate the effects of temperature and light on the calcifying fluid chemistry (using boron isotope systematics), calcification rates, metabolic rates and photo-physiology of Acropora nasuta during two mesocosm experiments simulating seasonal and static temperature and light regimes. Under the seasonal regime, coral calcification rates, calcifying fluid carbonate chemistry, photo-physiology and metabolic productivity responded to both changes in temperature and light. However, under static conditions the artificially prolonged exposure to summer temperatures resulted in heat stress and a heightened sensitivity to light. Our results indicate that temperature and light effects on coral physiology and calcification mechanisms are interactive and context-specific, making it essential to conduct realistic multi-variate dynamic experiments in order to predict how coral calcification will respond to ocean warming.
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03661715
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Saturday, May 7, 2022 - 6:34:57 PM
Last modification on : Monday, May 16, 2022 - 6:40:13 AM

File

s43247-022-00396-8.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Claire L. Ross, Andrew Warnes, Steeve Comeau, Christopher E. Cornwall, Michael V. W. Cuttler, et al.. Coral calcification mechanisms in a warming ocean and the interactive effects of temperature and light. Communications Earth & Environment, 2022, 3, ⟨10.1038/s43247-022-00396-8⟩. ⟨insu-03661715⟩

Share

Metrics

Record views

53

Files downloads

2