Question

There were 770 frogs in a pond. 70 of them died within a month. Calculate the death rate of the population of frogs in the pond.

Hint:

Always include the per capita unit in rate calculation questions in ecology.

Answer 1

Step 1: Understanding the Concept:
Death rate (Mortality) is calculated as the number of deaths divided by the initial population size.

Step 2: Key Formula or Approach:
\[ \text{Death Rate} = \frac{\text{Number of deaths}}{\text{Initial population size}} \]

Step 3: Detailed Explanation:
Number of deaths = 70.
Initial population = 770.
\[ \text{Death Rate} = \frac{70}{770} = \frac{1}{11} \approx 0.0909 \]

Step 4: Final Answer:
The death rate is 0.0909 per frog per month.