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Biology Ch 5

TermDefinition
Biodiversity Number of different species living in a specific area.
Ecosystem Biological community and all the nonliving factors that affect it.
Extinction The disappearance of a species when the last of its members dies.
Genetic Diversity Variety of inheritable characteristics or genes in an interbreeding population.
Species Diversity in a biological community, the number and abundance of different species.
Background Extinction Gradual process of a species becoming extinct.
Biological Magnification increasing concentration of toxic substances, such as DDT in organisms as tropic levels increase in food chains or food webs.
Edge Effect any different environmental condition occurring along an ecosystem's boundaries.
Eutrophication water pollution from nitrogen-rich and phosphorus-rich substances flowing into waterways, causing algal overgrowth.
Habitat Fragmentation Habitat loss from separation of an ecosystem into small pieces of land.
Introduced Species nonnative species deliberately or accidentally introduced into a new habitat.
Mass extinction a large scale dying out of a large percentage of all living organisms in an area within a short time.
Natural Rescources any material or organism in the biosphere, including water, soil, fuel, and plants and animals.
Overexploitation overuse of species with economic value---a factor in species extinction.
Biological Augmentation Technique of adding essential materials to a degraded ecosystem.
Bioremediation technique using living organisms to detoxify a polluted are.
Endemic found only in one specific geography.
Nonrenewable Rescources any natural resource available in limited amounts or replaced extremely slowly by natural processes.
Renewable Rescources any resource replaced by natural processes more quickly than it is consumed.
Sustainable using resources at a rate in which they can be replaced or recycled while preserving the long term environmental health of the biosphere.
Created by: anthonyrouse123
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