Community Interactions

Question 1

In food webs, how can species affect one another?

Answer 1

through DIRECT or INDIRECT effects

Question 2

Community diversity takes into account what two things?

Answer 2

species richness
species evenness

Question 3

Species richness

Answer 3

number of species in a community

Question 4

Species evenness

Answer 4

proportion of individuals in a community represented by each species

Question 5

What is used to visualize both species richness and evenness within a community?

Answer 5

rank-abundance curve

Question 6

Keystone species

Answer 6

presence or absence can affect species diversity – can be predator, parasite, herbivores, competitor

ex: sea stars (star fish)

Question 7

Community diversity can be affected by what?

Answer 7

disturbance patterns

Question 8

Intermediate disturbance hypothesis

Answer 8

more species are present in communities that experience occasional disturbances than in communities that experience frequent or rare disturbances