8 Alternative Android App Stores From China. Just as the entire Android system is largely open, so the method of getting apps onto Googleâs mobile OS is also unfettered. In most of the rest of the world, the official Android Market suffices as the primary app source â but in China, the situation has evolved quite differently.
Biodiversity can be measured and monitored at several spatial scales. Alpha Diversity = richness and evenness of individuals within a habitat unit. For example in the figure below, Alpha Diversity of Site A = 7 species, Site B = 5 species, Site C = 7 species. Beta Diversity = expression of diversity between habitats.
Description: It appears that the term 'biological diversity' was first defined as including two related concepts, genetic diversity (the amount of genetic variability within species) and ecological diversity (the number of species in a community of organisms) by Norse and McManus (1980).