Biodiversity within a community Flashcards
What is biodiversity?
The variety of living organisms
What is species diversity?
The number of different species and the number of different individuals in a community
What is genetic diversity?
A measure of the genetic variation found in a particular species, the number of alleles in a gene pool
What is ecosystem diversity?
The range of different habitats
What is the equation for the index of diversity?
D = N(N-1) / sum of n(n-1)
What does each component stand for in the index of diversity?
D = diversity index
N = total number of organisms
n = total number of organisms of each species
Σ = the sum of
How do agricultural ecosystems impact biodiversity?
They reduce biodiversity and the number of species present because humans select for particular characteristics
What techniques can be used to maintain biodiversity?
- using hedgerows instead of fences
- intercropping
- reducing use of herbicides and pesticides
- preserving wetlands
