Chapter 56Terms and Ideas

Genetic diversity-genetic variation within a population and between populations

Species diversity-variety of species in an ecosystem

Ecosystem diversity-community interactions, extinction of one species has a negative impact on the species richness of the community

Habitat loss-single greatest threat to biodiversity

Introduced species-no natural predators so they outcompete native species

Overexploitation-human harvesting of wild organisms at rates exceeding the ability of populations to rebound

Extinction vortex Fragmentation and edges Movement corridor Protected areas Biodiversity hot spots Nature reserves Zoned reserves

Bioremediation Biological augmentation Restoration Sustainable development