Contact: Andy Fell
University of California - Davis
Caption: Seabirds like this Antarctic prion are the top predators of the Southern Ocean, feeding on krill that themselves feed on phytoplankton. New research shows that a chemical signal released by plankton, dimethyl sulfide or DMS, attracts seabirds that eat krill. DMS also plays a role in regulating the planet's temperature by influencing cloud formation.
Credit: Copyright Kevin Shafer, 2007.
Usage Restrictions: May be used with acknowledgement of the copyright owner.
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