FM Forest Ecology & Silviculture 3

Question 1

Which of the following best describes 'allelopathy' in a forest context?

Accepted Answer

Chemical inhibition of one plant species by another

Answer

Allelopathy occurs when a plant releases chemical compounds that inhibit the germination or growth of neighboring plants, as seen with black walnut and many understory species.

Question 2

A silviculturist prescribes a 'crop tree release' treatment. What is the PRIMARY goal?

Accepted Answer

Freeing selected high-value trees from competition

Answer

Crop tree release removes competing trees touching or overtopping selected crop trees, directing site resources to the most valuable individuals.

Question 3

What is the ecological significance of the 'duff' layer in a forest floor?

Accepted Answer

It stores water, nutrients, and supports decomposer communities

Answer

The duff (partially decomposed organic matter) layer retains moisture, cycles nutrients, moderates soil temperature, and hosts the fungi and invertebrates that drive decomposition.

Question 4

In the context of forest management, what is a 'mast year'?

Accepted Answer

Year of exceptionally high seed production by trees

Answer

A mast year is a synchronized, episodic event when tree species (especially oaks and beeches) produce far above-average quantities of seeds, benefiting wildlife that depend on this food source.

Question 5

Which silvicultural system is most appropriate for managing Ponderosa pine, a shade-intolerant species, in the western US?

Accepted Answer

Shelterwood or clearcutting variants

Answer

Shade-intolerant species like Ponderosa pine require significant light for regeneration, making shelterwood or clearcut systems (which create large openings) most suitable.

(FM) Forest Management Certification Practice Test

(FM) Forest Management Certification Practice Test

FM Forest Ecology & Silviculture 3