Activation energy for skeletal aragonite deposited by the hermatypic coral Platygyra spp
| Autor: | E. W. White, J. N. Weber |
|---|---|
| Rok vydání: | 1974 |
| Předmět: |
geography
geography.geographical_feature_category Ecology biology Aragonite Coral Hermatypic coral Activation energy Pocillopora damicornis Aquatic Science engineering.material biology.organism_classification Platygyra Animal science Oceanography engineering Growth rate Reef Ecology Evolution Behavior and Systematics |
| Zdroj: | Marine Biology. 26:353-359 |
| ISSN: | 1432-1793 0025-3162 |
| DOI: | 10.1007/bf00391518 |
| Popis: | Average radial growth rates of the hemispherical aragonite colonies deposited by the Indo-Pacific scleractinian reef coral Platygyra spp. were determined by measuring the thickness of density variations in the skeleton that are revealed by X-radiography. Ninety-one specimens from 21 localities were examined, but only 54 of these exhibited well-defined growth-banding. The apparent temperature dependence of growth rate is linear over the range 23.9° to 29.3°C, averaging 5.4±0.94 mm/year at 24°C, 8.0±0.42 mm/year at 27°C, and 9.7 ±0.58 mm/year at 29°C (90% confidence limits). Expression of the influence of temperature on growth rate in terms of the Arrhenius equation yields an activation energy of 20,680 cal/mole, which is comparable to values for typical biological reactions, but is only half that reported for skeletogenesis in another reef coral, Pocillopora damicornis, on the basis of controlled incubation studies involving 45Ca uptake. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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