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

Occupy continuous old-growth habitat exclusively

Answer

Migrate seasonally between forest and grassland biomes

Answer

Are apex predators with very large home ranges

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

New pigment synthesis triggered by cold temperatures

Answer

Anthocyanin production from stored sugars

Answer

Tannin oxidation in response to photoperiod

Question 3

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

Accepted Answer

A self-perpetuating community in equilibrium with site conditions

Answer

The most species-rich stage of succession

Answer

The first community to colonize disturbed ground

Answer

A community dominated by fire-adapted species

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

Mycorrhizal association

Answer

Lichenic photosynthesis

Answer

Ectomycorrhizal carbon transfer

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

Timber production

Answer

Recreation and tourism

Answer

Spiritual and cultural values

Question 6

A forester assessing old-growth characteristics would look for which structural feature as a key old-growth indicator?

Accepted Answer

Abundant coarse woody debris and multi-layered canopy

Answer

Even-aged canopy with uniform diameter distribution

Answer

High density of advance regeneration only

Answer

Absence of snags due to complete decomposition

Question 7

Which disturbance regime characteristic best explains why the boreal forest has a relatively simple species composition compared to tropical forests?

Accepted Answer

High frequency of stand-replacing fires and harsh climate limiting species establishment

Answer

Absence of mammalian herbivores reducing selective pressure

Answer

Very high precipitation leaching soil nutrients rapidly

Answer

Stable climate over millennia with no glacial disturbance