B.F. Bachelor of Forestry Bachelor of Forestry Forest Ecosystem 5

Question 1

Metapopulation theory is most applicable to forest wildlife species that:

Accepted Answer

Exist as spatially separated subpopulations connected by dispersal

Answer

Metapopulation dynamics describe subpopulations in fragmented habitat patches linked by occasional dispersal events.

Question 2

Which process is responsible for the characteristic yellow and orange leaf colors in deciduous forests during autumn?

Accepted Answer

Unmasking of carotenoids as chlorophyll breaks down

Answer

Yellow and orange carotenoid pigments are present all season but become visible as green chlorophyll degrades in fall.

Question 3

In forest succession, a climax community is best defined as:

Accepted Answer

A self-perpetuating community in equilibrium with site conditions

Answer

A climax community maintains itself through reproduction without further directional change under stable environmental conditions.

Question 4

Which type of mutualism is exemplified by the relationship between alder trees (Alnus spp.) and Frankia bacteria?

Accepted Answer

Symbiotic nitrogen fixation

Answer

Frankia actinomycetes fix atmospheric nitrogen in alder root nodules, enriching soil nitrogen for surrounding plants.

Question 5

The concept of 'ecosystem services' categorizes benefits forests provide. Which is an example of a regulating service?

Accepted Answer

Carbon sequestration and climate regulation

Answer

Regulating services include carbon sequestration, water purification, and flood control — processes that regulate environmental conditions.

B.F. Bachelor of Forestry Practice Test