Effects of temperature on the mortality and growth of Hawaiian reef corals
| Autor: | Stephen L. Coles, Paul L. Jokiel |
|---|---|
| Rok vydání: | 1977 |
| Předmět: |
geography
Montipora capitata geography.geographical_feature_category Ecology biology Porites compressa fungi technology industry and agriculture Photosynthetic pigment Pocillopora damicornis Aquatic Science biology.organism_classification chemistry.chemical_compound chemistry Common species Fungia scutaria population characteristics Seawater Reef geographic locations Ecology Evolution Behavior and Systematics |
| Zdroj: | Marine Biology. 43:201-208 |
| ISSN: | 1432-1793 0025-3162 |
| DOI: | 10.1007/bf00402312 |
| Popis: | Three common species of Hawaiian reef corals, Pocillopora damicornis (L.), Montipora verrucosa (Lamarck) and Fungia scutaria Lamarck, were grown in a temperature-regulated, continuous-flow sea water system. The skeletal growth optimum occurred near 26°C, coinciding with the natural summer ambient temperature in Hawaii, and was lowest at 21° to 22°C, representing Hawaiian winter ambient. Levels of approximately 32°C produced mortality within days. Prolonged exposure to temperatures of approximately 30°C eventually caused loss of photosynthetic pigment, increased mortality, and reduced calcification. Corals lived only 1 to 2 weeks at 18°C. The corals showed greater initial resistance at the lower lethal limit, but ultimately low temperature was more deleterious than high temperature. Results suggest that a decrease in the natural water temperature of Hawaiian reefs would be more harmful to corals than a temperature increase of the same magnitude. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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