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Changes in Communities • Succession- The series of predictable changes that occur in a community over time. • Pioneer Species- The first species to populate an area. Changes in Communities • Primary Succession – series of changes that occur in an area where no soil or organisms exist. • A new island formed by a volcanic eruption Changes in Communities • Secondary Succession – series of changes that occur in an area where the ecosystem has been disturbed. • Caused by fire, hurricanes, and tornadoes
