GLOBAL WARMING AND BIODIVERSITY
Many plants and animals may shift their ranges northward, decline in population, or become extinct. Zooplankton in the California Current declined by 80% since 1951, causing plankton-eating seabird and fish populations to decline. Shrimplike krill in Antarctic waters decreased also, resulting in a decline in Adelie penguins. Ecosystems most likely to suffer loss or extinction of species are polar seas, coral reefs, mountains and alpine tundra, taiga, and tropical forests. Weeds, pests, and disease-causing organisms are most likely to thrive.