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Unformatted text preview: Ecology The study of the interactions that take place among organisms and their environment Biosphere The part of Earth that supports life Top portion of Earth's crust All the waters that cover Earth's surface Atmosphere that surrounds Earth. Ecosystem All the organisms living in an area and the nonliving features of their environment Population All the organisms in an ecosystem that belong to the same species Community All the populations in an ecosystem Habitat The place in which an organism lives provides the kinds of food and shelter, the temperature, and the amount of moisture the organism needs to survive Competition Food Space Competition Competition caused by population growth affects many organisms, including humans Limits population size Limiting Factor Anything that restricts the number of individuals in a population. Includes living and nonliving features of the ecosystem Succession Natural, gradual changes in the types of species that live in an area; can be primary or secondary. Primary begins in a place without soil Secondary where soil already exists Primary Succession Secondary Succession Pioneer species A group of organisms, such as lichens, found in the primary stage of succession and that begin an area's soil-building process Climax community A community that has reached a stable stage of ecological succession Biome Large geographic areas with similar climates and ecosystems Includes Tundra Taiga Desert Temperate deciduous forest Temperate rain forest Tropical rain forest, and grassland ...
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This note was uploaded on 02/13/2012 for the course BIO 126 N/A taught by Professor N/a during the Spring '10 term at University of Phoenix.
- Spring '10