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Chapter 18: Problem 18

Describe how a researcher would determine the size of a penguin population in Antarctica using the mark and release method.

Short Answer

Expert verified
In summary, to determine the size of a penguin population in Antarctica using the mark and release method, the researcher would capture and mark a sample of penguins, then release them back into the wild. After some time, a second sample of penguins would be captured, and the proportion of marked penguins in this second sample would be used to estimate the size of the overall population.

Step by step solution

01

Understanding the Mark and Release Method

The mark and release method is a technique used in ecology to estimate an animal population's size. Initially, a sample of the population is captured, marked in some way, and then released back into the environment.
02

Applying the Technique to Penguins

In the case of penguins in Antarctica, the researcher would first need to safely capture a small sample of penguins. Once captured, the penguins would be marked. This could involve banding their flippers, or perhaps using a non-toxic dye or tag that won't harm the penguins or impede their natural behavior in any way.
03

Releasing and Re-Sampling

After marking, the penguins would be released back into their habitat. After a certain amount of time has passed to allow the marked penguins to mingle with the rest of the population, the researcher would capture another sample of penguins.
04

Estimating the Population Size

By noticing the proportion of marked to unmarked penguins in this new sample, the researcher can make an estimate of the total penguin population. This is done assuming that the proportion of marked to unmarked penguins in the second sample is representative of the proportion in the overall population.

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