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People and ecosystems

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Ecosystem dynamics: past, present and future

Examining the multi-scale dynamics of reefs, from population dynamics to macroevolution

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Coral Bleaching

Coral Bleaching

Coral Reef Studies

ARC Centre of Excellence for Coral Reef Studies
James Cook University Townsville
Queensland 4811 Australia

Phone: 61 7 4781 4000
Email: info@coralcoe.org.au

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Event

Specificity, Flexibility and Diversity in Cnidarian Dinoflagellate Symbiosis – What Does it All Mean?

When

12.00pm, Thursday 6 October 2011

location
Townsville - Sir George Fisher Building Conference Room #114 (DB32 upstairs)
Presenter
Dr. Ruth Gates, Hawaii Institute of Marine Biology, University of Hawaii at Manoa

Dr. Ruth D. Gates is a Research Professor at the Hawaii Institute of Marine Biology, a research unit embedded in the University of Hawaii at Manoa. Her overarching goal is to contribute basic and applied scientific knowledge that expands understanding of how coral reefs function, and informs the conservation and management of coral reef ecosystems in the face of climate change and local anthropogenic activities. Her research focuses on the mechanisms by which reef corals sense and respond to changes in the marine environment. Her work is contextualized by the innate variability in the way in which corals respond to stress, which is exemplified by the fact that some corals survive, and even thrive in conditions that rapidly kill others. Dr. Gates and her group seek to better understand the biological underpinnings of this variability by defining biological and ecological traits that associate with environmental thresholds in corals, and with stability and resilience of reefs. Much of her recent work has examined how the genetic composition and nature of the association between corals and endosymbiotic dinoflagellates map onto the function and environmental tolerance of corals. Her work crosses a variety of spatial scales (molecules, cells, tissues, colony, community, reef) and draws on tools from the fields of molecular genetics, functional genomics, metabolomics, bioinformatics, histology, cell biology, biochemistry, physiology and ecology.

Abstract:

The accumulating data strongly suggest that the fate of reef-building corals, in a world increasingly affected by climate change, will be determined in part, by the nature and composition of endosymbionts dinoflagellate (Symbiodinium sp.) communities hosted by corals and the functional diversity afforded by flexibility in these associations.  Progress has been made in describing the distribution of Symbiodinium genotypes over space and time, as well as linking functional attributes such as thermal tolerance in specific Symbiodinium genotypes.  This research suggests that the capacity to change the taxonomic composition of symbionts can be beneficial and acts as a potential mechanism for corals to adapt to climate change (i.e., Adaptive Bleaching Hypothesis). In this seminar, I present the research underway in my group on patterns in Symbiodinium diversity in corals and reef environments, and discuss the environmental thresholds of coral holobionts in the context of this diversity.

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Coral Reef Studies

ARC Centre of Excellence for Coral Reef Studies
James Cook University Townsville
Queensland 4811 Australia

Phone: 61 7 4781 4000
Email: info@coralcoe.org.au