Selasa, 06 November 2012

Biological Diversity (biodiversity)


Biological Diversity (biodiversity)
"The variability among living organisms from all sources including, inter alia, terrestrial, marine and other aquatic ecosystems and the ecological complexes of which they are a part; this includes diversity within species and of ecosystems[Convention on Biological Diversity, 1992]

Biodiversity is defined as the collection of genomes, species, and ecosystems occurring in a geographically defined region. [Understanding Marine Biodiversity: A Research Agenda for the Nation, 1995, Committee on Biological Diversity in Marine Systems, National Research Council
Council]

Zoologists and botanists typically consider biodiversity to refer to the variation and frequency of organisms within a given area, whereas evolutionary biologists may prefer to include in this definition the genes that contribute to the variation within a species as well.

In either case, biodiversity can generally be defined as the total composition of evolutionary units in a given environment. [BIODIVERSITY: THE BIG (AND EVEN BIGGER) PICTURE, Joseph McPhee, 2003]

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