JMDMT #104 Microfossils of Cyanobacteria in Carbonaceous Meteorites
BackThe James M. DuPont Meteorite Collection - composing a diatom com- munity may be much less than in the very variable environment of an eutrophic or mesotrophic, natural river. It seems that it is the highly variable, yet con- tinuously favorable, environment of natural rivers of these types that is largely responsible for the great diversity of species that make up these communities. The fact that the numbers of species remain fairly similar, although the kinds of species vary considerably, suggests that there are a similar number of niches for diatom species in ecologically similar natural areas and more species are available than there are niches for them. Thus, each niche is occupied by a different species. The lack of similarity in kinds of species present is probably in part due to the highly
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Uploaded: November 20th, 2008 @ 11:55 pm
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