How is the biodiversity of an ecosystem measured?
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Biodiversity is basically the variety within and among life forms on a site, ecosystem, or landscape. Biodiversity is defined and measured as an attribute that has two components — richness and evenness.
Richness = The number of groups of genetically or functionally related individuals. In most vegetation surveys, richness is expressed as the number of species and is usually called species richness.
Evenness = Proportions of species or functional groups present on a site. The more equal species are in proportion to each other the greater the evenness of the site. A site with low evenness indicates that a few species dominate the site.
Diversity can be use to describe variation in several forms:
Genetic (species, varieties, etc.)
Life form (grasses, forb, trees, mosses, etc.)
Functional group (deep rooted, nitrogen-fixing, soil crust, evergreen .
Richness = The number of groups of genetically or functionally related individuals. In most vegetation surveys, richness is expressed as the number of species and is usually called species richness.
Evenness = Proportions of species or functional groups present on a site. The more equal species are in proportion to each other the greater the evenness of the site. A site with low evenness indicates that a few species dominate the site.
Diversity can be use to describe variation in several forms:
Genetic (species, varieties, etc.)
Life form (grasses, forb, trees, mosses, etc.)
Functional group (deep rooted, nitrogen-fixing, soil crust, evergreen .
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Biodiversity can be measured in the relation to species richness, or the number of species in a given area.
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