CFP Fish Habitat & Ecosystem Health 3

Question 1

Which process describes the colonization of disturbed habitat patches by fish species, followed by gradual community change over time?

Accepted Answer

Biological succession

Answer

Biological succession describes the sequential replacement of species assemblages over time as habitat conditions change following disturbance.

Question 2

In a lake experiencing cultural eutrophication, which management technique uses aluminum sulfate applied to the water column?

Accepted Answer

Alum treatment

Answer

Alum (aluminum sulfate) treatment precipitates phosphorus from the water column and forms a floc layer on sediments that binds internal phosphorus loads.

Question 3

What is the primary function of a two-stage ditch design in agricultural drainage systems?

Accepted Answer

Create bench features that reduce bank erosion and improve aquatic habitat

Answer

Two-stage ditches include bench features at bankfull elevation that dissipate energy, reduce erosion, and provide habitat and nutrient processing functions.

Question 4

Which spawning habitat characteristic is described by the term 'hydraulic head' in redd assessment?

Accepted Answer

The pressure differential driving upwelling through spawning gravel

Answer

Hydraulic head in redd assessment refers to the pressure gradient that drives hyporheic upwelling through spawning gravel, supplying oxygen to developing embryos.

Question 5

The 'thermal guild' classification of fish species is primarily based on:

Accepted Answer

Optimal and lethal water temperature ranges

Answer

Thermal guilds group fish by their optimal temperature ranges and thermal tolerances, classifying species as cold-, cool-, or warm-water species.

(CFP) Certified Fisheries Professional Practice Test

(CFP) Certified Fisheries Professional Practice Test

CFP Fish Habitat & Ecosystem Health 3