Question

for which method of determining population size is the population not aware of the samplers presence?
a. mark/recapture
b. direct observation
c. sampling
d. indirect observation

please select the best answer from the choices provided

a
b
c
d

Explanation:

🆕 New Concept Discovered: Methods of Estimating Population Size
Measuring populations without disturbing them.

Step 1: Analyze the options

To determine which method allows researchers to estimate population size without the organisms being aware of their presence, let's look at how each method works:

• a. mark/recapture: This method requires physically catching organisms, marking them, releasing them, and catching them again. The organisms are highly aware of the interaction.
• b. direct observation: This involves looking directly at the organisms to count them. In many cases, the presence of a human observer can be detected by wildlife, potentially altering their behavior.
• c. sampling: This typically involves counting organisms in a small, defined area (like a quadrat) to estimate the larger population. This often requires physical presence and disruption of the habitat.
• d. indirect observation: This method involves counting signs of the organisms rather than the organisms themselves (such as nests, burrows, tracks, or droppings). Because the researcher does not need to interact with or even see the live animals directly, the population remains completely unaware of the sampler's presence.

Step 2: Identify the best choice

Since indirect observation relies entirely on signs left behind by the organisms, it is the only method listed where the population is guaranteed not to be aware of the sampler's presence.

Answer:

D