Thermal priming affects symbiont photosynthesis but does not alter bleaching susceptibility in Acropora millepora
| Autor: | Sophie Dove, Kenneth R. N. Anthony, Ove Hoegh-Guldberg, Rachael Middlebrook |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
chemistry.chemical_classification
geography geography.geographical_feature_category Coral bleaching Coral Aquatic Science Biology biology.organism_classification Photosynthesis Acclimatization Horticulture Symbiodinium Acropora millepora chemistry Xanthophyll Botany Reef Ecology Evolution Behavior and Systematics |
| Zdroj: | Journal of Experimental Marine Biology and Ecology. :64-72 |
| ISSN: | 0022-0981 |
| Popis: | This study experimentally investigated the effect of an early summer short-term summer thermal anomaly in November on Heron Reef (Great Barrier Reef), on the performance of the coral-algal symbiosis during a subsequent, thermally induced bleaching event (defined by loss of symbionts) in February 2009. Fragments of the reef flat coral, Acropora millepora, exposed to the two heating events lost 78% of their symbionts and showed a 64% decline in dark adapted quantum yield (Fv/Fm) to values less than 0.25. Whereas corals that were only heated in the second event lost 57% symbionts and displayed a 75% decline in Fv/Fm to values less than 0.2. Coral in both pre-stressed and non pre-stressed treatments at 34 degrees C had net photosynthetic rates significantly less than zero (P-net max |
| Databáze: | OpenAIRE |
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