CFP Ecosystem Restoration 3

Question 1

Passive restoration relies on which fundamental ecological process to recover degraded fish habitat?

Accepted Answer

Natural recovery following stressor removal

Answer

Passive restoration removes the disturbance and allows natural succession and self-organization to rebuild ecosystem structure.

Question 2

In lake restoration, hypolimnetic oxygenation is used primarily to:

Accepted Answer

Restore dissolved oxygen in deep water and reduce internal phosphorus loading

Answer

Hypolimnetic oxygenation replenishes oxygen in deep anoxic layers, suppressing phosphorus release from sediments.

Question 3

Which invasive species removal technique is most appropriate for eradicating brook trout from a high-elevation lake to restore native cutthroat trout?

Accepted Answer

Piscicide application (rotenone or antimycin A) followed by native restocking

Answer

Piscicide application reliably eliminates non-native trout, and native cutthroat restocking restores the original species assemblage.

Question 4

Channel incision in an urban stream most directly degrades fish habitat by:

Accepted Answer

Lowering the water table and disconnecting the floodplain

Answer

Channel incision lowers the bed elevation, disconnecting floodplains and reducing groundwater exchange that moderates temperature and baseflow.

Question 5

The concept of 'river continuum' is important to restoration planning because it highlights:

Accepted Answer

How biological communities change predictably from headwaters to lowland reaches

Answer

The River Continuum Concept describes longitudinal shifts in energy sources and biological communities, informing reach-appropriate restoration strategies.

(CFP) Certified Fisheries Professional Practice Test

(CFP) Certified Fisheries Professional Practice Test

CFP Ecosystem Restoration 3