💧10. Biodiversity

ecosystem diversity

range of habitats

species diversity

number of species and individuals in each species (richness and evenness)

genetic diversity

variety of alleles/genes

ecosystem

a group of living organisms interacting with their physical environment, including biotic and abiotic components.

community

the living organisms of all species found in a particular ecosystem at a particular time.

species

group of organisms which can breed to produce fertile offspring

species richness

how many different species in a community

species evenness

how many individuals in each species in a community

problem with farming?

uses large monoculture fields, herbicides, pesticides and deforestation

problem with carbon dioxide?

generated from deforestation and burning fossil fuels

causes global warming which melts ice caps and leads to flooding and drought

to maintain biodiversity with agriculture?

• maintain hedgerows

• reduce herbicides and pesticides

• use organic fertiliser

• use a crop rotation

hierarchy

smaller groups within larger groups with no overlap