Diurnal cycles of coral calcifying fluid aragonite saturation state

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The sensitivity of corals to ocean acidification depends on the extent to which they can buffer their calcifying fluid aragonite saturation state ((cf)) from declines in seawater pH. While the seasonal response of the coral calcifying fluid (cf) to seawater pH has been studied previously, relatively little is known about (cf) dynamics on shorter (daily) timescales, particularly whether it is sensitive to seawater pH. Here, we use alizarin dye to mark 4days of skeletal growth in the corals Acropora nasuta and Pocillopora damicornis living in situ on Ningaloo Reef in Western Australia. Exploiting newly developed confocal Raman spectroscopy techniques, we imaged the alizarin stains and quantified (cf) between them. We report the first observations of diurnal (cf) cycles, which were found in both species. Our results are consistent with either external control of (cf) by seawater pH or light, or alternatively that (cf) follows an endogenous circadian rhythm.

Original languageEnglish
Article number28
Number of pages6
JournalMarine Biology
Volume166
Issue number3
DOIs
Publication statusPublished - Mar 2019

Cite this

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title = "Diurnal cycles of coral calcifying fluid aragonite saturation state",
abstract = "The sensitivity of corals to ocean acidification depends on the extent to which they can buffer their calcifying fluid aragonite saturation state ((cf)) from declines in seawater pH. While the seasonal response of the coral calcifying fluid (cf) to seawater pH has been studied previously, relatively little is known about (cf) dynamics on shorter (daily) timescales, particularly whether it is sensitive to seawater pH. Here, we use alizarin dye to mark 4days of skeletal growth in the corals Acropora nasuta and Pocillopora damicornis living in situ on Ningaloo Reef in Western Australia. Exploiting newly developed confocal Raman spectroscopy techniques, we imaged the alizarin stains and quantified (cf) between them. We report the first observations of diurnal (cf) cycles, which were found in both species. Our results are consistent with either external control of (cf) by seawater pH or light, or alternatively that (cf) follows an endogenous circadian rhythm.",
keywords = "CALCIUM-CARBONATE SATURATION, OCEAN ACIDIFICATION, CALCIFICATION, PH, SEAWATER, SKELETON, MECHANISMS, INSIGHTS, DIOXIDE",
author = "DeCarlo, {Thomas M.} and Ross, {Claire L.} and McCulloch, {Malcolm T.}",
year = "2019",
month = "3",
doi = "10.1007/s00227-019-3468-6",
language = "English",
volume = "166",
journal = "Marine Biology",
issn = "0025-3162",
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Diurnal cycles of coral calcifying fluid aragonite saturation state. / DeCarlo, Thomas M.; Ross, Claire L.; McCulloch, Malcolm T.

In: Marine Biology, Vol. 166, No. 3, 28, 03.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Diurnal cycles of coral calcifying fluid aragonite saturation state

AU - DeCarlo, Thomas M.

AU - Ross, Claire L.

AU - McCulloch, Malcolm T.

PY - 2019/3

Y1 - 2019/3

N2 - The sensitivity of corals to ocean acidification depends on the extent to which they can buffer their calcifying fluid aragonite saturation state ((cf)) from declines in seawater pH. While the seasonal response of the coral calcifying fluid (cf) to seawater pH has been studied previously, relatively little is known about (cf) dynamics on shorter (daily) timescales, particularly whether it is sensitive to seawater pH. Here, we use alizarin dye to mark 4days of skeletal growth in the corals Acropora nasuta and Pocillopora damicornis living in situ on Ningaloo Reef in Western Australia. Exploiting newly developed confocal Raman spectroscopy techniques, we imaged the alizarin stains and quantified (cf) between them. We report the first observations of diurnal (cf) cycles, which were found in both species. Our results are consistent with either external control of (cf) by seawater pH or light, or alternatively that (cf) follows an endogenous circadian rhythm.

AB - The sensitivity of corals to ocean acidification depends on the extent to which they can buffer their calcifying fluid aragonite saturation state ((cf)) from declines in seawater pH. While the seasonal response of the coral calcifying fluid (cf) to seawater pH has been studied previously, relatively little is known about (cf) dynamics on shorter (daily) timescales, particularly whether it is sensitive to seawater pH. Here, we use alizarin dye to mark 4days of skeletal growth in the corals Acropora nasuta and Pocillopora damicornis living in situ on Ningaloo Reef in Western Australia. Exploiting newly developed confocal Raman spectroscopy techniques, we imaged the alizarin stains and quantified (cf) between them. We report the first observations of diurnal (cf) cycles, which were found in both species. Our results are consistent with either external control of (cf) by seawater pH or light, or alternatively that (cf) follows an endogenous circadian rhythm.

KW - CALCIUM-CARBONATE SATURATION

KW - OCEAN ACIDIFICATION

KW - CALCIFICATION

KW - PH

KW - SEAWATER

KW - SKELETON

KW - MECHANISMS

KW - INSIGHTS

KW - DIOXIDE

U2 - 10.1007/s00227-019-3468-6

DO - 10.1007/s00227-019-3468-6

M3 - Article

VL - 166

JO - Marine Biology

JF - Marine Biology

SN - 0025-3162

IS - 3

M1 - 28

ER -