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Warmer more acidic conditions cause decreased productivity and calcification in subtropical coral reef sediment-dwelling calcifiers
TLDR
These findings indicate that 32uC and 101 Pa CO2, are the upper limits for survival of these species on Heron Island reef, and it is concluded that these species will be highly vulnerable to the predicted future climate change scenarios of elevated temperature and ocean acidification. Expand
Sex, Scavengers, and Chaperones: Transcriptome Secrets of Divergent Symbiodinium Thermal Tolerances
TLDR
The physiological and transcriptional responses of the Symbiodinium populations to heat stress directly correlate with the bleaching susceptibilities of corals that harbored these same Symbiod inium populations, providing novel, foundational insights into the molecular basis of dinoflagellate thermal tolerance and coral bleaching. Expand
Increased rate of D1 repair in coral symbionts during bleaching is insufficient to counter accelerated photo‐inactivation
TLDR
Increased photo-inactivation in hospite, rather than an inhibition of PSII repair, is the principle trigger for net photo- inhibition under bleaching conditions. Expand
Sex, Scavengers, and Chaperones: Transcriptome Secrets of Divergent Symbiodinium Thermal Tolerances
TLDR
The physiological and transcriptional responses of the Symbiodinium populations to heat stress directly correlate with the bleaching susceptibilities of corals that harbored these same Symbiod inium populations, providing novel, foundational insights into the molecular basis of dinoflagellate thermal tolerance and coral bleaching. Expand
Microenvironmental changes support evidence of photosynthesis and calcification inhibition in Halimeda under ocean acidification and warming
TLDR
This study shows that ocean acidification and ocean warming are drivers of calcification and photosynthesis inhibition in Halimeda, which can result in a strongly reduced production of carbonate sediments on coral reefs under such changed climate conditions. Expand
Loss of Functional Photosystem II Reaction Centres in Zooxanthellae of Corals Exposed to Bleaching Conditions: Using Fluorescence Rise Kinetics
TLDR
Non-photochemical quenching was identified as a significant mechanism for dissipating excess energy as heat under the bleaching conditions and was associated with the phosphorylation-induced dissociation of the light harvesting complexes from the PS II reaction centres. Expand
Impact of bleaching conditions on the components of non-photochemical quenching in the zooxanthellae of a coral
TLDR
This investigation revealed that for corals not exposed to bleaching stress, qE was the principle means of energy dissipation, and the contribution of qT to the total NPQ significantly increased to equal that of qE, suggesting state transitions become more important under such conditions. Expand
Physiological and Morphological Responses of the Temperate Seagrass Zostera muelleri to Multiple Stressors: Investigating the Interactive Effects of Light and Temperature
TLDR
Results demonstrate that populations of Z. muelleri in south-eastern Australia are sensitive to small chronic temperature increases and light decreases that are predicted under future climate change scenarios. Expand
Can macroalgae contribute to blue carbon? An Australian perspective
TLDR
It is concluded that macroalgal communities have the potential to make ecologically meaningful contributions toward global blue carbon sequestration, as donors, but given that the fate of detached Macroalgal biomass remains unclear, further research is needed to quantify this contribution. Expand
Light-induced dissociation of antenna complexes in the symbionts of scleractinian corals correlates with sensitivity to coral bleaching
TLDR
Exposure to thermal stress as well as high light promoted xanthophyll de-epoxidation and increased β-carotene content, although it did not influence light-harvesting chlorophyll complex (LHC) dissociation, indicating light, rather than temperature, controls LHC dissociation. Expand
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