Does light enhance calcification in hermatypic corals?

Rinkevich, Baruch; Loya, Yossi

doi:10.1007/bf00393120

Cited by 72 publications

(48 citation statements)

References 17 publications

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“…The significant positive main effect of oxygen saturation on R d supports the often-proposed theory (e.g. Chalker and Taylor, 1975;Rinkevich and Loya, 1984;Ip et al, 1991;Colombo-Pallotta et al, 2010;Wijgerde et al, 2012a) that dark Fig. 3.…”

Section: −1supporting

confidence: 82%

Interactive effects of oxygen, carbon dioxide and flow on photosynthesis and respiration in the scleractinian coral Galaxea fascicularis

Osinga

Derksen‐Hooijberg

Wijgerde

et al. 2017

Journal of Experimental Biology

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Rates of dark respiration and net photosynthesis were measured for six replicate clonal fragments of the stony coral Galaxea fascicularis (Linnaeus 1767), which were incubated under 12 different combinations of dissolved oxygen (20%, 100% and 150% saturation), dissolved carbon dioxide (9.5 and 19.1 µmol l −1 ) and water flow (1-1.6 versus 4-13 cm s) in a repeated measures design. Dark respiration was enhanced by increased flow and increased oxygen saturation in an interactive way, which relates to improved oxygen influx into the coral tissue. Oxygen saturation did not influence net photosynthesis: neither hypoxia nor hyperoxia affected net photosynthesis, irrespective of flow and pH, which suggests that hyperoxia does not induce high rates of photorespiration in this coral. Flow and pH had a synergistic effect on net photosynthesis: at high flow, a decrease in pH stimulated net photosynthesis by 14%. These results indicate that for this individual of G. fascicularis, increased uptake of carbon dioxide rather than increased efflux of oxygen explains the beneficial effect of water flow on photosynthesis. Rates of net photosynthesis measured in this study are among the highest ever recorded for scleractinian corals and confirm a strong scope for growth.

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Section: −1supporting

confidence: 82%

Interactive effects of oxygen, carbon dioxide and flow on photosynthesis and respiration in the scleractinian coral Galaxea fascicularis

Osinga

Derksen‐Hooijberg

Wijgerde

et al. 2017

Journal of Experimental Biology

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“…As weight gain is a function of colony size (Bak 1976, Jokiel et al 1978, Vago et al 1997, and colony size is artificially determined when nubbins are cut off the mother colony, size must be controlled for when measuring growth rate. The most common estimates of colony size are surface area (Barnes & Taylor 1973, Rinkevich & Loya 1984, skeletal weight (Ferrier-Pagès et al 2000), protein (Dennison & Barnes 1988, Allemand et al 1998b, chlorophyll (Gattuso 1987) and tissue content (Edmunds & Davies 1986). The choice of parameter depends on the question and level of analysis.…”

Section: Combined Datamentioning

confidence: 99%

Dependence of calcification on light and carbonate ion concentration for the hermatypic coral Porites compressa

Marubini

Barnett

Langdon

et al. 2001

Mar. Ecol. Prog. Ser.

191

158

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) during 3 different chemical states, mimicking the conditions of the Last Glacial Maximum (LGM), the present day and the year 2100 (Y2100). Calcification rate changed with light following the typical hyperbolic tangent function. Calcification rate was positively correlated with saturation state, which ranged from 5 (LGM) to 2.4 (Y2100). From the glacial experimental conditions (Ω = 5.05, pCO 2 = 186) to those of the future (Ω = 2.25, pCO 2 = 641), calcification dropped by 30%; from present day conditions (Ω = 3.64, pCO 2 = 336) to those of the future, calcification dropped by 11%. This decrease in calcification rate occurred at all light levels, indicating that rising CO 2 will impact corals living at all depths.

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“…(3) Production of energy by photosynthesis (Chalker and Taylor, 1975) or release of O 2 (Rinkevich and Loya, 1984).…”

Section: Introductionmentioning

confidence: 99%

Study of calcification during a daily cycle of the coralStylophora pistillata: implications for `light-enhanced calcification'

Moya

Tambutté

et al. 2006

Journal of Experimental Biology

123

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SUMMARY This work, performed on the scleractinian coral Stylophora pistillata, aims at providing new information on the `light-enhanced calcification' process. In a first step, in controlled conditions of culture and constant light supply, we studied the diurnal cycle of calcification. We determined that calcification rates are constant during the day and the night with a 2.6-fold difference between day and night calcification rates. We also showed that the photosynthetic rate is constant throughout the day when a constant light intensity is applied. Our results on free-running experiments in prolonged conditions of light or dark suggest that calcification is not regulated by an endogenous circadian rhythm. In a second step, using a kinetic isotopic approach with 45Ca, we characterized the transition stages between day and night and vice versa. Under our experimental conditions, the lag-phase necessary to switch from the light to the dark calcification rate is the same as the lag-phase necessary to switch from the dark to the light calcification rate. We discuss our results in the context of two hypotheses of the light-enhanced calcification process: (1) the role of photosynthesis on the pH in the coelenteron and (2) the role of photosynthesis in supplying precursors of the organic matrix.

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Does light enhance calcification in hermatypic corals?

Cited by 72 publications

References 17 publications

Interactive effects of oxygen, carbon dioxide and flow on photosynthesis and respiration in the scleractinian coral Galaxea fascicularis

Interactive effects of oxygen, carbon dioxide and flow on photosynthesis and respiration in the scleractinian coral Galaxea fascicularis

Dependence of calcification on light and carbonate ion concentration for the hermatypic coral Porites compressa

Study of calcification during a daily cycle of the coralStylophora pistillata: implications for `light-enhanced calcification'

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