biodiversity within a community
- Created by: Margaret Hobart
- Created on: 16-05-21 12:39
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- biodiversity within a community
- species richness = the number of different species in a community
- index of diversity = measures the number of different species in a community and the number of individuals within each species
- N (N-1) / sum of n (n-1)
- biodiversity
- Species diversity = range of different species and individual members of species in a community
- Genetic diversity = variety of genes in a population of a species
- the higher the biodiversity the more stable the ecosystem is
- farming techniques can reduce the biodiversity
- woodland clearance
- destroys habitats and so species forced to migrate or die
- hedgerow removal
- destroys habitats and so species forced to migrate or die
- pesticides
- kills organisms that feed on crops and so species which live off pests will die
- herbicides
- reduces plant diversity which in turn reduces diversity that feed on these plants
- monoculture
- when farms have fields only containing one type of crop and so supports fewer organisms
- conservation
- planting trees or hedges
- giving protection to endangered species
- woodland clearance
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