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Effects of diurnally oscillating pCO2 on the calcification and survival of coral recruits.
Proc Biol Sci. 2012 Aug 07; 279(1740):2951-8.PB

Abstract

Manipulative studies have demonstrated that ocean acidification (OA) is a threat to coral reefs, yet no experiments have employed diurnal variations in pCO(2) that are ecologically relevant to many shallow reefs. Two experiments were conducted to test the response of coral recruits (less than 6 days old) to diurnally oscillating pCO(2); one exposing recruits for 3 days to ambient (440 µatm), high (663 µatm) and diurnally oscillating pCO(2) on a natural phase (420-596 µatm), and another exposing recruits for 6 days to ambient (456 µatm), high (837 µatm) and diurnally oscillating pCO(2) on either a natural or a reverse phase (448-845 µatm). In experiment I, recruits exposed to natural-phased diurnally oscillating pCO(2) grew 6-19% larger than those in ambient or high pCO(2). In experiment II, recruits in both high and natural-phased diurnally oscillating pCO(2) grew 16 per cent larger than those at ambient pCO(2), and this was accompanied by 13-18% higher survivorship; the stimulatory effect on growth of oscillatory pCO(2) was diminished by administering high pCO(2) during the day (i.e. reverse-phased). These results demonstrate that coral recruits can benefit from ecologically relevant fluctuations in pCO(2) and we hypothesize that the mechanism underlying this response is highly pCO(2)-mediated, night-time storage of dissolved inorganic carbon that fuels daytime calcification.

Authors+Show Affiliations

Department of Biology, California State University, 18111 Nordhoff Street, Northridge, CA 91330-8303, USA. aaron.dufault@gmail.comNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

22513858

Citation

Dufault, Aaron M., et al. "Effects of Diurnally Oscillating pCO2 On the Calcification and Survival of Coral Recruits." Proceedings. Biological Sciences, vol. 279, no. 1740, 2012, pp. 2951-8.
Dufault AM, Cumbo VR, Fan TY, et al. Effects of diurnally oscillating pCO2 on the calcification and survival of coral recruits. Proc Biol Sci. 2012;279(1740):2951-8.
Dufault, A. M., Cumbo, V. R., Fan, T. Y., & Edmunds, P. J. (2012). Effects of diurnally oscillating pCO2 on the calcification and survival of coral recruits. Proceedings. Biological Sciences, 279(1740), 2951-8. https://doi.org/10.1098/rspb.2011.2545
Dufault AM, et al. Effects of Diurnally Oscillating pCO2 On the Calcification and Survival of Coral Recruits. Proc Biol Sci. 2012 Aug 7;279(1740):2951-8. PubMed PMID: 22513858.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of diurnally oscillating pCO2 on the calcification and survival of coral recruits. AU - Dufault,Aaron M, AU - Cumbo,Vivian R, AU - Fan,Tung-Yung, AU - Edmunds,Peter J, Y1 - 2012/04/18/ PY - 2012/4/20/entrez PY - 2012/4/20/pubmed PY - 2012/12/10/medline SP - 2951 EP - 8 JF - Proceedings. Biological sciences JO - Proc. Biol. Sci. VL - 279 IS - 1740 N2 - Manipulative studies have demonstrated that ocean acidification (OA) is a threat to coral reefs, yet no experiments have employed diurnal variations in pCO(2) that are ecologically relevant to many shallow reefs. Two experiments were conducted to test the response of coral recruits (less than 6 days old) to diurnally oscillating pCO(2); one exposing recruits for 3 days to ambient (440 µatm), high (663 µatm) and diurnally oscillating pCO(2) on a natural phase (420-596 µatm), and another exposing recruits for 6 days to ambient (456 µatm), high (837 µatm) and diurnally oscillating pCO(2) on either a natural or a reverse phase (448-845 µatm). In experiment I, recruits exposed to natural-phased diurnally oscillating pCO(2) grew 6-19% larger than those in ambient or high pCO(2). In experiment II, recruits in both high and natural-phased diurnally oscillating pCO(2) grew 16 per cent larger than those at ambient pCO(2), and this was accompanied by 13-18% higher survivorship; the stimulatory effect on growth of oscillatory pCO(2) was diminished by administering high pCO(2) during the day (i.e. reverse-phased). These results demonstrate that coral recruits can benefit from ecologically relevant fluctuations in pCO(2) and we hypothesize that the mechanism underlying this response is highly pCO(2)-mediated, night-time storage of dissolved inorganic carbon that fuels daytime calcification. SN - 1471-2954 UR - https://www.unboundmedicine.com/medline/citation/22513858/Effects_of_diurnally_oscillating_pCO2_on_the_calcification_and_survival_of_coral_recruits_ L2 - https://royalsocietypublishing.org/doi/full/10.1098/rspb.2011.2545?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -