CF Forest Ecology and Silviculture 2

Question 1

Which silvicultural system is most appropriate for shade-intolerant species like aspen and jack pine?

Accepted Answer

Clearcut system

Answer

Clearcut systems regenerate shade-intolerant species by providing full sunlight to the entire site.

Question 2

What is the term for the process by which nitrogen-fixing bacteria convert atmospheric nitrogen to a plant-available form?

Accepted Answer

Biological nitrogen fixation

Answer

Biological nitrogen fixation converts N₂ gas into ammonia through bacteria such as Rhizobium and Frankia.

Question 3

In forest succession, what is the term for the gradual replacement of one plant community by another over time?

Accepted Answer

Forest succession

Answer

Forest succession describes the sequential replacement of plant communities from pioneer species to climax vegetation.

Question 4

Which of the following best describes a 'mast year' in forest ecology?

Accepted Answer

A year of synchronous heavy seed production by trees

Answer

A mast year is characterized by synchronous, exceptionally heavy seed or nut production across a tree population, often in response to climate cues.

Question 5

Which stand structure characteristic is most associated with uneven-aged management?

Accepted Answer

Multiple age and size classes present simultaneously

Answer

Uneven-aged management produces stands with multiple age and size classes coexisting at the same time.

(CF) Certified Forester Exam Practice Test