Community Ecology

Question 1

Primary succession

Answer 1

Initial establishment of plant and animal communities on substrates lacking living organisms (ex: bare rock, lava, dunes)

Question 2

Secondary succession

Answer 2

Change of an established community (ex: ponds and lakes accumulate pollen, leaves)

Question 3

What does sedaDNA reveal about woolly mammoths?

Answer 3

That woolly mammoths existed 10,000 yr BP which is several thousands of years later than said by macrofossil surveys

Question 4

Allogenic succession vs autogenic succession

Answer 4

Allogenic succession: abiotic disturbance (non-living thing that has an impact on living things or the environment)
Autogenic succession: biotic disturbance (living thing that has an impact on another population of livings or the environment)

Question 5

Stochastic events

Answer 5

Largely unpredictable events (ex: lightning strikes or floods)

Question 6

Facilitation

Answer 6

A species creates favourable conditions for a species but not itself (mutualism)