Post-Exam 2: Community Ecology (my own definitions)

Question 1

metapopulation

Answer 1

metapopulation:

non-continuous (doesn’t continue), connected populations.
can see by frequent extinction and colonization events, or source-sink dynamics

• connected by gene flow (movement of genes from one population to another)

Question 2

community

Answer 2

community:

just think a community. interactions between species, they live in the same area.

Question 3

community structure

Answer 3

community structure:

the structure is the kinds of species and its abundance, in that community

Question 4

(determining community structure): species richness

Answer 4

species richness:

it’s how rich. the number of species in an area.

ex. species richness = 4 (4 types of plants)

Question 5

(determining community structure): species evenness

Answer 5

species evenness:

it’s both richness & abundance of each species.

diverse communities: more species & similar numbers between them of abundance

Question 6

(species interaction) commensalism

Answer 6

one organism benefits, the other has no effect

ex. fish attaches to shark to catch a ride. shark doesn’t benefit or be harmed