Carbon and oxygen isotope fractionation in the skeletal carbonate of reef-building corals

Weber, Jon N.; Woodhead, P. M. J.

doi:10.1016/0009-2541(70)90009-4

Cited by 198 publications

(85 citation statements)

References 46 publications

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“…This problem is likely to be much greater in recent corals in which the amount of organic matter is considerably higher. A wide range of treatments have been used so far: vacuum roasting at 250 to 300°C (McConnaughey 1989), hydrogen peroxide (H202) soaking (Weil et al 1981), ultrasonic cleaning (Aharon 1991), low temperature oxygen plasma furnace (Goreau 1977, Erez 1978 and 5 % solution of sodium hypochlorite (Weber & Woodhead 1970, 1972, Land et al 1975. In some cases, no pretreatment of the carbonate was carried out prior to analysis (McConnaughey 1989, Leder et al 1996.…”

Section: Discussionmentioning

confidence: 99%

A novel culture technique for scleractinian corals:application to investigate changes in skeletal ∂18O as a function of temperature

Reynaud-Vaganay¹,

Gattuso²,

Cuif³

et al. 1999

Mar. Ecol. Prog. Ser.

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A novel experimental protocol is described that assists investigations of the effect of environmental parameters on records from the carbonate skeletons of scleractinian corals. It involves the culture of coral colonies on glass slides so as to time the skeletal deposition and environmental records precisely. The value of the technique is demonstrated via calibration of the relationship between skeletal 6Ih0 and seawater temperature in 2 species of coral obtained from the Gulf of Aqaba. Colonies were grown at 5 temperatures between 21 and 2g°C. For Acropora sp. this relationship gave a slope of -0.27O;n "C", a value close to previous estimates. The 6"O signature of Stylophora pistillata displayed a high variability between colonies and gave an average slope much lower than previous estimates (-0.139:m 'C-?). These data may indicate a taxonomic difference and the need to re-examine the systemat~cs of this genus. Nevertheless, such variability in colonies of a single species or of a set of closely related species may have i~nplications for the use of coral skeleton as proxy records.

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Section: Discussionmentioning

confidence: 99%

A novel culture technique for scleractinian corals:application to investigate changes in skeletal ∂18O as a function of temperature

Reynaud-Vaganay¹,

Gattuso²,

Cuif³

et al. 1999

Mar. Ecol. Prog. Ser.

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“…Fundamental to this explanation is a reconsideration of the role (and dynamics) of respiratory carbon dioxide (CO 2met ) used in calcification -as compared to seawater dissolved inorganic carbonate (DIC) (cf. Weber and Woodhead, 1970). In this case, it is important to note that zooxanthellae photosynthesis preferentially uses the lighter 12 C, and thus transfer of zooxanthellae photoassimilates (i.e.…”

Section: S Wooldridge: a New Conceptual Model Of Coral Biomineralisamentioning

confidence: 99%

“…The aragonite deposited by corals is typically depleted in 13 C and 18 O relative to values of isotopic equilibrium with ambient seawater (Weber and Woodhead, 1970;McConnaughey, 1989). Moreover, the extent of disequilibrium (the so-called "vital effect") displays strong spatial coherence with structural growth characteristics of the coral, for example, (i) the granular crystals of the COC are more depleted in both 13 C and 18 O compared with the surrounding aragonite fibres (Rollion-Bard et al, 2003a, 2003bMeibom et al, 2006), (ii) structural dissepiments are associated with CaCO 3 that is more strongly depleted in 18 O (RollionBard et al, 2003a), and (iii) rapidly extending areas within a colony are depleted in both 13 C and 18 O compared with slower extending areas (Land et al, 1975;McConnaughey, 1989;Suzuki et al, 2005).…”

Section: S Wooldridge: a New Conceptual Model Of Coral Biomineralisamentioning

confidence: 99%

A new conceptual model of coral biomineralisation: hypoxia as the physiological driver of skeletal extension

Wooldridge

2013

Biogeosciences

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That corals skeletons are built of aragonite crystals with taxonomy-linked ultrastructure has been well understood since the 19th century. Yet, the way by which corals control this crystallization process remains an unsolved question. Here, I outline a new conceptual model of coral biomineralisation that endeavours to relate known skeletal features with homeostatic functions beyond traditional growth (structural) determinants. In particular, I propose that the dominant physiological driver of skeletal extension is night-time hypoxia, which is exacerbated by the respiratory oxygen demands of the coral's algal symbionts (= zooxanthellae). The model thus provides a new narrative to explain the high growth rate of symbiotic corals, by equating skeletal deposition with the "work-rate" of the coral host needed to maintain a stable and beneficial symbiosis. In this way, coral skeletons are interpreted as a continuous (long-run) recording unit of the stability and functioning of the coral–algae endosymbiosis. After providing supportive evidence for the model across multiple scales of observation, I use coral core data from the Great Barrier Reef (Australia) to highlight the disturbed nature of the symbiosis in recent decades, but suggest that its onset is consistent with a trajectory that has been followed since at least the start of the 1900s. In concluding, I outline how the proposed capacity of cnidarians (which includes modern reef corals) to overcome the metabolic limitation of hypoxia via skeletogenesis also provides a new hypothesis to explain the sudden appearance in the fossil record of calcified skeletons at the Precambrian–Cambrian transition – and the ensuing rapid appearance of most major animal phyla

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“…The validity of their use as indicators of past environmental conditions, such as water temperatures, nutrients and pollution levels has been confirmed in earth and environmental science studies (Weber and Woodhead, 1970;Weber, 1973;Mitsuguchi et al, 1996;Mitsuguchi et al, 2001;Mitsuguchi et al, 2003). In contrast, studies on trace elements in precious coral have been focused mostly on Mediterranean red coral C. rubrum (Weinbauer and Velimirov, 1995;Weinbauer et al, 2000).…”

Section: Introductionmentioning

confidence: 98%

Trace elements in Corallium spp. as indicators for origin and habitat

Hasegawa

Rahman

Luan

et al. 2012

Journal of Experimental Marine Biology and Ecology

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Precious corals have been commercially exploited for many centuries around the world.The skeletons of these corals consist of calcium carbonate, and have been used as amulets or gemstones since ancient times. Different Corallium species of Coralidae family (e.g., show that trace element concentrations in the skeletons of Corallium spp. were attributable to their habitat and origin. In particular, Mg/Ca and Ba/Ca ratios in the skeletons of Corallium spp. from the Mediterranean Sea and Japanese and the Midway Islands' waters were found to be habitat-specific. This study also reveals that trace elements in the skeletons can be used as ecological indicator of the coral's origin, and are expected to play an important part in the cultural study and sustainable management of precious corals. Findings of this study will also be of great relevance to the coral industry to authenticate and identify the habitat and origin of the corals.

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Carbon and oxygen isotope fractionation in the skeletal carbonate of reef-building corals

Cited by 198 publications

References 46 publications

A novel culture technique for scleractinian corals:application to investigate changes in skeletal ∂18O as a function of temperature

A novel culture technique for scleractinian corals:application to investigate changes in skeletal ∂18O as a function of temperature

A new conceptual model of coral biomineralisation: hypoxia as the physiological driver of skeletal extension

Trace elements in Corallium spp. as indicators for origin and habitat

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