Revision+

Question 1

Species richness

Answer 1

Number of species in a community

Question 2

Relative abundance

Answer 2

Proportion of a species in a community

Question 3

Keystone species

Answer 3

Species that effects structure of community and without it the community would collapse
Ecosystem engineers are keystone species that affect the structure of the habitat eg build damns (beaver)

Question 4

Intermediate disturbance

Answer 4

Have more species in community than those in rare disturbance or frequent disturbance areas

Question 5

Guild

Answer 5

Species that feed on the same food

Question 6

Direct effects

Answer 6

Don’t involve a intermediate species

Question 7

Trophic cascade

Answer 7

Indirect effects that were initiated by predator

Question 8

Ectotone

Answer 8

Boundary created by sharp changes in environment accompanied by change in species composition