CFP Field Survey & Data Collection 2

Question 1

Which electrofishing technique is most effective for sampling large, deep rivers where boat access is possible?

Accepted Answer

Boom electrofishing from a boat

Answer

Boom electrofishing from a boat is the standard method for sampling large rivers, projecting electrodes ahead of the vessel.

Question 2

The Lincoln-Petersen mark-recapture estimator assumes which of the following?

Accepted Answer

All individuals have an equal probability of capture

Answer

Equal probability of capture for all individuals is a core assumption of the Lincoln-Petersen estimator.

Question 3

A fisheries biologist records total length (TL) and weight for each fish in a sample. The primary purpose of calculating a condition factor (K) is to:

Accepted Answer

Assess the relative well-being and nutritional status of fish

Answer

Condition factor K reflects how well a fish is nourished relative to its length, indicating overall health.

Question 4

When using hydroacoustics (echo sounding) for fish surveys, target strength (TS) is primarily used to:

Accepted Answer

Convert acoustic backscatter to fish size or species estimates

Answer

Target strength relates the acoustic echo intensity to fish size, enabling density and biomass estimation.

Question 5

Which water quality parameter is most critical to measure immediately upon collection because it changes rapidly after sampling?

Accepted Answer

Dissolved oxygen

Answer

Dissolved oxygen degasses or is consumed quickly, so it must be measured in situ or immediately after collection.

(CFP) Certified Fisheries Professional Practice Test

(CFP) Certified Fisheries Professional Practice Test

CFP Field Survey & Data Collection 2