B.S.F. or B.Sc.F. Bachelor of Science in Forestry Bachelor of Science in Forestry: Wildlife Ecology and Habitat Preservation 2 — Questions and Answers
Question 1: Which concept describes the minimum area of habitat required for a wildlife population to persist long-term without inbreeding depression?
- Minimum viable population
- Minimum dynamic area (Correct answer)
- Critical habitat threshold
- Ecological carrying capacity
Correct answer: Minimum dynamic area
Minimum dynamic area refers to the smallest habitat patch that can sustain natural disturbance regimes and support a viable population over time.
Question 2: What is the primary function of a wildlife corridor in fragmented forest landscapes?
- Providing human recreational access
- Facilitating gene flow and movement between habitat patches (Correct answer)
- Concentrating wildlife for easier monitoring
- Reducing predator-prey interactions
Correct answer: Facilitating gene flow and movement between habitat patches
Wildlife corridors connect isolated habitat fragments, allowing animals to disperse, migrate, and interbreed, which maintains genetic diversity and population viability.
Question 3: The edge effect in forest ecology typically results in which of the following?
- Decreased species diversity at habitat boundaries
- Increased nest predation rates for forest interior birds (Correct answer)
- Reduced invasive plant establishment
- Lower ambient temperatures along forest edges
Correct answer: Increased nest predation rates for forest interior birds
Forest edges expose bird nests to higher predation pressure from edge-adapted predators like raccoons and crows that penetrate into adjacent interior habitat.
Question 4: Which federal law requires the U.S. Fish and Wildlife Service to designate 'critical habitat' for listed species?
- National Forest Management Act
- Migratory Bird Treaty Act
- Endangered Species Act (Correct answer)
- National Environmental Policy Act
Correct answer: Endangered Species Act
The Endangered Species Act of 1973 mandates critical habitat designation to protect areas essential for conservation of threatened and endangered species.
Question 5: Keystone predators influence ecosystem structure primarily by:
- Competing directly with herbivores for plant resources
- Regulating prey populations and indirectly shaping vegetation (Correct answer)
- Providing carrion that sustains decomposer communities
- Dispersing seeds of dominant tree species
Correct answer: Regulating prey populations and indirectly shaping vegetation
Keystone predators exert top-down control on herbivore populations, which in turn affects plant community composition through trophic cascades.
Question 6: Landscape connectivity is best measured using which analytical approach?
- Species-area relationship curves
- Circuit theory and least-cost path modeling (Correct answer)
- Population viability analysis alone
- Habitat suitability index scoring
Correct answer: Circuit theory and least-cost path modeling
Circuit theory models landscape connectivity by treating the landscape as an electrical circuit, identifying corridors and pinch points based on resistance surfaces.
Question 7: Which successional stage of forest typically provides the highest structural diversity and supports the greatest wildlife species richness?
- Early seral shrub stage
- Mid-seral pole timber stage
- Late-successional old-growth stage (Correct answer)
- Post-disturbance grass stage
Correct answer: Late-successional old-growth stage
Old-growth forests feature multiple canopy layers, abundant snags, coarse woody debris, and structural complexity that support diverse wildlife communities.
B.S.F. or B.Sc.F. Bachelor of Science in Forestry Bachelor of Science in Forestry: Wildlife Ecology and Habitat Preservation 2
Which concept describes the minimum area of habitat required for a wildlife population to persist long-term without inbreeding depression?