Ein paar Definitionen:
Biodiversity Glossary of Termshttp://www.edu.gov.nf.ca/curriculum/teched/re...
The totality of genes, species, and ecosystems in a region or the world.
A function of the distribution and abundance of species. Approximately synonymous with Species Richness. In more technical literature, includes considerations of the evenness of species abundances. An ecosystem is said to be more diverse, according to the more technical definition, if species present have equal population sizes and less diverse if many species are rare and some are very common.
The number of species within a region. A term commonly used as a measure of Species Diversity, but technically only one aspect of diversity. https://royercenter.cwc.psu.edu/biodiversity/...
the species richness and relative abundance of species in a community.
the number of species in a community
BIODIVERSITY --- http://www.okstate.edu/artsci/botany/bisc3034...
Biodiversity consists of the variety of life on earth.
It contains several components:
Genetic diversity (eg. heterozygosity, # alleles)
Species diversity (eg. richness, H')
Community diversity (many measures)
Landscape diversity (many measures)
Species richness is the number of species in a given area.
Glossary of Conservation Terms --- http://www.msu.edu/~jaroszjo/greenway/glossar...
The variety of life and its processes; it includes the variety of living organisms, the genetic differences among them, the communities and ecosystems in which they occur, and the ecological and evolutionary processes that keep them functioning, yet ever changing and adapting.
Ecological measure of the number of species and their relative abundance (evenness) in a community; a low diversity refers to relatively fewer species or more uneven abundance, whereas a high diversity refers to a higher number of species or more even abundance.