biodiversity

what are the types of biodiversity?

species, genetic + ecosystem

species biodiversity?

no. dif species within each population in a community

genetic biodiversity?

variety of genes within all individuals in a pop.

ecosystem biodiversity?

range of dif habitats

species richness?

no. dif species in a particular area at a particular time

how does farming decrease biodiversity?

• destruction of hedgerows - habitat for small insects

• selective breeding

• monocultures - only growing 1 species, may also only attract 1 type of insect

• over - grazing

• draining + filling wetland

how can compromises maintain biodiversity?

limit activity

eg. 2 hedgerows rather than all, monoculture rotations of what species in grown

index of diversity?

measure of species diversity

• measures relationships between no. species in a community and no. individuals in each species

index of diversity calculation?

N(n-1)

sum of n(n-1)

N= no. organisms in all species
n= no. organisms in a particular species

what does the index of diversity number indicate?

usually 1-10

larger the number, greater the diversity