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9 Cards in this Set

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Biome
an area that supports life and is characterized by the climate; topography; and community of organisms.
Biodiversity
the variety of living things.
Genetic Diversity
a measure of the variety of different versions of the same genes within individual species.
Species Diversity
describes the number of different kinds of organisms within individual communities/ecosystems.
Ecological Diversity
the richness and complexity of a biological community; including the number of niches; tropic levels; and ecological processes that capture energy; sustain food webs; and recycle materials within this system.
Extinction
the elimination of a species (can be natural or impacted by humans)
Fragmentation
the reduction of habitat into smaller and smaller; more scattered patches (fragmentation reduces biodiversity because many species require large territories to live; it also divides populations into isolated groups making them more vulnerable to environmental changes)
Endangered Species Act (U.S. 1973)
Recovery Plans- prepared by the U.S. Fish & Wildlife Service; details how populations will be rebuilt to sustainable levels.
Reintroductions
an endangered species can be restored by reintroducing it to its former habitat once the major threats to its survival have been removed.