EVR-1001 Chapter Notes - Chapter 8: United Nations Environment Programme, Living Planet Index, World Wide Fund For Nature
27 Mar 2018
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Document Summary
Biodiversity: the variety of life across all levels of biological organization, and includes diversity in species, genes, populations, communities, and ecosystems. Species diversity: the #/variety of species found in a particular region. Evenness/relative abundance: the degree to which species di er in #s of individuals. Species: a distinct type of organism, a set of individuals that uniquely share certain characteristics and can breed with one another and produce fertile o spring. Although scientists may de ne species di erently, they generally agree on species identities. Subspecies: populations of a species that occur in di erent geographic areas and di er from one another in slight ways; result when divergence stops short of forming separate species. Genetic diversity: the di erences in dna composition among individuals which provides the raw material for adaptation to local conditions. Populations w/ little genetic diversity are vulnerable to environmental change. Inbreeding depression: occurs when genetically similar parents mate and produce weak/defective o spring.
