STB 415 Theory Questions: Estimating Fish Population Using Capture-Recapture Method

400 Level  Department of Science Laboratory Technology exam questions and detailed answers. Download the answers in document format. Correct, detailed, and straightforward answers.

Questions:

a.i What is the method used to estimate the size of population of fishes on a stretch of stream?

ii. Using a capture-recapture method to estimate the size of population of fishes on a stretch of stream, 600 individuals were captured, marked, and released. A second sample of 400 individuals was captured two days later, out of which 150 had marks. Estimate the population.

b. State the assumptions of capture-recapture methods of sampling.

c. Possible errors of capture-recapture method.

d. Precautions to be taken in capture-recapture method.

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