Test on Methods for Population Size Estimation
Methods for Population Size Estimation: Direct & Indirect Techniques
Test: Population size estimation methods
20 questions
Question 1: The use of helicopters to count large animals is a technique employed in the indirect quadrat method for estimating population size.
A. Ano
B. Ne
Explanation: Helicopters can be used to count large animals as part of direct methods, especially when the area is too large to count every organism individually. This is not a technique employed in the indirect quadrat method.
Question 2: When using the quadrat method, is it important that each quadrat in the sample is the same size?
A. Ano
B. Ne
Explanation: The quadrat method specifies that each quadrat used in the sample needs to be the same size.
Question 3: In the mark recapture method, the variable 'M' in the formula represents the total number of animals caught in the second sample.
A. Ano
B. Ne
Explanation: In the mark recapture method, 'M' represents the total number of marked animals initially, while 'C' represents the total number of animals caught in the second sample.
Question 4: In the quadrat method, the total population size is estimated by multiplying the number in the sample by the size of the whole habitat and then dividing by the size of the quadrat.
A. Ano
B. Ne
Explanation: The study materials state the formula for the total population size (N) in the quadrat method as: number in sample x size of whole habitat / size of quadrat.
Question 5: The direct census method is an ideal approach for estimating the population size of very fast-moving marine organisms spread across a vast ocean area.
A. Ano
B. Ne
Explanation: The direct census method is only suitable for organisms large enough to see, in areas that are not too large, and for slow-moving or stationary organisms. Fast-moving organisms in a vast area do not meet these criteria.