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 0.353 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 starting population size, which is given as 2,500 female European Hedgehogs.
Understand that survivorship represents the proportion of the original population that survives to a certain age, here 2 years, and is given as 0.343.
To find the number of hedgehogs that survive to 2 years old, multiply the starting population by the survivorship value.
Set up the equation: \(\text{Number surviving} = \text{Starting population} \times \text{Survivorship}\), or \(\text{Number surviving} = 2500 \times 0.343\).
Calculate the product to find the number of hedgehogs that make it to 2 years old.
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