CWD Conservation & Sustainability 3 — Questions and Answers
Question 1: Which landscape-scale approach to conservation prioritizes protecting large, connected areas of wetland habitat rather than isolated patches?
- Landscape connectivity and corridor planning (Correct answer)
- Individual wetland enhancement
- Species-by-species recovery planning
- Isolated mitigation banking
Correct answer: Landscape connectivity and corridor planning
Landscape connectivity planning protects movement corridors between wetland complexes, supporting wildlife populations and ecological resilience at a broader scale.
Question 2: Prairie potholes in the Upper Midwest are especially significant for conservation because they:
- Support a disproportionately large share of North American waterfowl production relative to their area (Correct answer)
- Are the only source of freshwater recharge for the Ogallala Aquifer
- Contain the highest densities of federally listed plant species
- Represent the largest contiguous wetland complex in the Western Hemisphere
Correct answer: Support a disproportionately large share of North American waterfowl production relative to their area
The Prairie Pothole Region produces roughly 50–80% of North American migratory waterfowl despite covering a fraction of the continent's land area.
Question 3: In the context of ecosystem services valuation, which category best describes a wetland's role in removing nitrogen and phosphorus from agricultural runoff?
- Regulating services (water quality improvement) (Correct answer)
- Provisioning services
- Cultural services
- Supporting services
Correct answer: Regulating services (water quality improvement)
Water quality improvement through nutrient uptake and denitrification is classified as a regulating ecosystem service under the Millennium Ecosystem Assessment framework.
Question 4: The 'mitigation hierarchy' for wetland impacts under Corps/EPA guidelines lists which sequence in descending order of preference?
- Avoidance, minimization, compensatory mitigation (Correct answer)
- Restoration, creation, enhancement, preservation
- Compensation, mitigation, avoidance
- Enhancement, preservation, restoration
Correct answer: Avoidance, minimization, compensatory mitigation
The mitigation hierarchy requires applicants to first avoid wetland impacts, then minimize unavoidable impacts, and only then compensate for remaining losses.
Question 5: Which term describes the process by which a degraded wetland recovers its ecological functions through natural processes without active human intervention?
- Passive restoration (natural recovery) (Correct answer)
- Active restoration
- Wetland enhancement
- Mitigation banking
Correct answer: Passive restoration (natural recovery)
Passive restoration relies on removing stressors (e.g., drainage tiles, invasive species pressure) and allowing natural hydrological and biological processes to reestablish wetland functions.
Question 6: Which organization administers the National Wetlands Inventory (NWI) maps used widely in U.S. conservation planning?
- U.S. Fish and Wildlife Service (USFWS) (Correct answer)
- U.S. Army Corps of Engineers (USACE)
- Natural Resources Conservation Service (NRCS)
- Environmental Protection Agency (EPA)
Correct answer: U.S. Fish and Wildlife Service (USFWS)
The USFWS produces and maintains NWI maps, which classify wetlands using the Cowardin system and are a primary baseline tool for wetland conservation planning.
Question 7: What is 'in-lieu fee mitigation' as an alternative compensatory mitigation mechanism?
- A program where permittees pay funds to an approved sponsor that conducts restoration on their behalf (Correct answer)
- A fee paid directly to the Army Corps to offset wetland losses
- A tax credit system for landowners who voluntarily protect wetlands
- A penalty assessed for unpermitted wetland fill
Correct answer: A program where permittees pay funds to an approved sponsor that conducts restoration on their behalf
In-lieu fee programs collect money from permittees and direct it to a sponsor (often a government or nonprofit) that implements wetland restoration projects within the same watershed.
CWD Conservation & Sustainability 3
Which landscape-scale approach to conservation prioritizes protecting large, connected areas of wetland habitat rather than isolated patches?