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IN science the little things really do count. Just ask Tasmanian researcher Dr Karin Beaumont, who is making it her life's work to discover how the microscopic poo of tiny ocean organisms is affecting global climate change.
The minuscule zooplankton feed on ocean algae which, like all plants, use carbon dioxide to photosynthesise.
The carbon absorbed by the zooplankton is released in its faeces and if it floats to the surface it can be reabsorbed into the atmosphere and contribute to the greenhouse gases that cause global warming.
If it sinks to the bottom of the ocean it is locked up in sedimentary rock for thousands, if not millions, of years, keeping down the amount of carbon dioxide in the atmosphere.
Now if you're still not convinced you care whether zooplankton drop sinkers or floaters you should know there are more than 1500 million tonnes of protozoa, a type of zooplankton, in the Southern Ocean alone.
http://www.news.com.au/common/story_page/0,4057,10485495%255E13762,00.html