Ecosystem Restoration Flashcards
7 cards from real CFP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Ecosystem Restoration flashcards as text
Passive restoration relies on which fundamental ecological process to recover degraded fish habitat?
Answer: Natural recovery following stressor removal
Passive restoration removes the disturbance and allows natural succession and self-organization to rebuild ecosystem structure.
In lake restoration, hypolimnetic oxygenation is used primarily to:
Answer: Restore dissolved oxygen in deep water and reduce internal phosphorus loading
Hypolimnetic oxygenation replenishes oxygen in deep anoxic layers, suppressing phosphorus release from sediments.
Which invasive species removal technique is most appropriate for eradicating brook trout from a high-elevation lake to restore native cutthroat trout?
Answer: Piscicide application (rotenone or antimycin A) followed by native restocking
Piscicide application reliably eliminates non-native trout, and native cutthroat restocking restores the original species assemblage.
Channel incision in an urban stream most directly degrades fish habitat by:
Answer: Lowering the water table and disconnecting the floodplain
Channel incision lowers the bed elevation, disconnecting floodplains and reducing groundwater exchange that moderates temperature and baseflow.
The concept of 'river continuum' is important to restoration planning because it highlights:
Answer: How biological communities change predictably from headwaters to lowland reaches
The River Continuum Concept describes longitudinal shifts in energy sources and biological communities, informing reach-appropriate restoration strategies.
Which action would most likely reduce summer thermal stress for coldwater fish species in a degraded stream?
Answer: Planting native riparian tree species to increase canopy shade
Riparian canopy shade reduces direct solar radiation, lowering summer water temperatures for thermally sensitive species like trout.
A restored wetland's function as a fish nursery habitat depends most critically on:
Answer: Seasonal hydrologic connectivity with adjacent stream or river channels
Seasonal hydrologic connectivity allows fish to access wetland nursery areas during high water and return to the main channel as waters recede.