Multiple Choice
Population ecologists follow the fate of same-age cohorts to determine:
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50. Population Ecology
Population Demography
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If a cohort of female European Hedgehogs has a starting population of 2,500 and a survivorship of 0.343 after 2 years, how many hedgehogs make it to 2 years old?
A
883.
B
503.
C
1723.
D
353.
Verified step by step guidance1
Identify the initial population size of the cohort, which is given as 2,500 female European Hedgehogs.
Understand that survivorship is the proportion of individuals surviving to a particular age. Here, the survivorship after 2 years is given as 0.343.
To find the number of hedgehogs that survive to 2 years old, multiply the initial population by the survivorship value.
Set up the equation: \( \text{Number of survivors} = \text{Initial population} \times \text{Survivorship} \).
Substitute the given values into the equation: \( \text{Number of survivors} = 2500 \times 0.343 \).
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