Presentation on theme: "Ecological Succession Ch. 21 Selent. Succession The sequential growth of species in an area, or the progressive change in the species composition of an."— Presentation transcript:
Ecological Succession Ch. 21 Selent
Succession The sequential growth of species in an area, or the progressive change in the species composition of an ecosystem. Occurs in areas where new land is created or in areas where existing species have been destroyed.
Primary Succession The development of a community in an area that has not previously supported life. –Newly formed volcanic islands –Land exposed by receding glaciers –Exposed sand bars
Secondary Succession The sequential replacement of species in an area that once had a community that was lost after a disruption. Tilled farm land Volcanic eruption Forest Fire Flood
Farm Land Succession
Pioneer Species The first organisms to inhabit new areas. Generally small Fast growing Quick to reproduce
More Pioneer Species
Climax Community The dominant stable species in an environment.