Here are some articles and links that will help you to understand the significance of Coral Reefs and Rain Forests.

The 2010 report from the World Meteorological Organization

The Australian Government Great Barrier Reef Marine Park Authority website

The Coral Reef Alliance website ... see what you can do to help coral reefs.

The local university based in Cairns and Townsville carries out lots of research on the Reef and Rainforest ecosystems:

James Cook University
Try looking to see what specific researchers do eg Professor Steven Williams. looks at the effect of climate change on rainforest animals.