ecosystem dyanmics - habitats & niches

Question 1

habitat

Answer 1

a habitat is an area or environment where an individual or species/population lives within an ecosystem

Question 2

niche

Answer 2

a species’ ecological niche is the role it has in its ecosystem and the conditions it requires to persist

Question 3

competitive exclusive principle

Answer 3

postulates that no two species can occupy the same niche in the same environment for an extended period of time

Question 4

keystone species

Answer 4

exert a disproportionately large effect on population numbers of other species in the community. niche of a keystone species includes highly influential relationships with a number of other species in a food web. (e.g. purple sea star which prevents organisms from monopolising food resources & space)