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
Ecohydrology in restoration science refers to the study of:
Answer: Feedback interactions between hydrological processes and aquatic/riparian ecology
Ecohydrology examines bidirectional feedbacks between hydrological conditions and biological communities to guide restoration design.
In designing fish passage at a dam removal site, which hydraulic parameter is most critical for migrating anadromous fish?
Answer: Maximum sustained swim speed relative to water velocity
Fish passage design must ensure water velocities do not exceed the maximum sustained swim speed of the target species.
Which restored structural element in a stream channel most directly increases salmonid overwinter survival?
Answer: Deep pools with large wood cover
Deep pools with large wood provide cold-water refugia and low-velocity cover that are critical for salmonid overwinter survival.
Alum (aluminum sulfate) is applied to lakes during restoration primarily to:
Answer: Precipitate and bind phosphorus in the water column and at the sediment surface
Alum flocculates dissolved phosphorus and forms an aluminum hydroxide cap on sediments, reducing internal phosphorus loading.
Which approach is used to evaluate whether a restored stream reach has achieved functional equivalency to a reference condition?
Answer: Habitat Equivalency Analysis (HEA) using biological metrics
HEA compares functional outputs such as biological productivity, structure, and services between restored and reference sites over time.
When restoring a coastal estuary degraded by dike enclosure, the first management action should typically be:
Answer: Restoring tidal hydrology by breaching or removing tide gates
Restoring tidal hydrology is the foundational step; vegetation and fauna recolonize naturally once salinity and inundation regimes are reestablished.
Bioengineering techniques in stream bank restoration differ from hard engineering (riprap) in that they:
Answer: Integrate living plant materials to provide self-reinforcing stability over time
Bioengineering uses live plant materials whose root systems grow over time, increasing stability and providing habitat value unlike static hard structures.