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Web Notes V
RENR 205
Question | Answer |
---|---|
Biodiversity | variety of organisms including their unique attributes. e.g. genetics, adaptations, and species interactions |
How many species have been identified? | 2 million |
How many species have been estimated to exist? | 10-30 million |
Fundamental niche | range of conditions and resources in which species can survive and reproduce |
Realized niche | range of conditions and resources in which a species can survive with competitors and predators |
Species pool | entire group of species within a region |
Species sorting | restriction of species from a regional pool in local communities based on 1) tolerance of environmental conditions 2) resource requirements of species 3) interactions with other species |
Competitive exclusion | two species can not occupy one niche. one will be excluded |
Competitive release | positive species response to the removal of competitors, predators, and diseases |