CWD Ecosystem Restoration 2

Question 1

Which planting technique is most effective for restoring emergent vegetation in a degraded marsh?

Accepted Answer

Transplanting plugs or rhizome divisions during early spring dormancy break

Answer

Transplanting plugs or rhizome divisions during early spring provides established root systems that can survive competition and hydrologic stress.

Question 2

What is the primary purpose of installing a water control structure during wetland restoration?

Accepted Answer

To allow management of water levels to mimic natural hydroperiods

Answer

Water control structures allow managers to manipulate hydroperiods, simulating natural seasonal flooding and drawdown cycles critical to wetland function.

Question 3

In a prairie pothole restoration, which action best addresses the loss of natural hydrology caused by tile drains?

Accepted Answer

Plugging or removing subsurface tile drains

Answer

Removing or plugging tile drains restores the natural water retention capacity of prairie potholes by eliminating artificial drainage pathways.

Question 4

Which soil amendment is commonly used to reduce sulfide toxicity in restored tidal wetland soils?

Accepted Answer

Calcium carbonate (lime)

Answer

Lime (calcium carbonate) raises soil pH and reduces sulfide toxicity, which is common in acid sulfate soils exposed during tidal wetland restoration.

Question 5

What does 'reference site' mean in the context of wetland restoration planning?

Accepted Answer

An undisturbed or minimally disturbed wetland used to define restoration targets

Answer

A reference site represents a least-disturbed wetland of the same type used to establish structural and functional goals for restoration.

(CWD) Certified Wetland Delineator Practice Test

(CWD) Certified Wetland Delineator Practice Test

CWD Ecosystem Restoration 2