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The intrinsic rate of increase (r) for northern elephant seals about 0.15 (per annum). We will assume that population regulation is linearly density dependent.
a. If the carrying capacity of elephant seals at a recently recolonized island is 1000 adult females and the initial population size is 100, how many more years (approximately) will it take for the population to grow to K?
b. If the island population overshot carrying capacity to s 1900 adult females, how many more years (approximately) will it take for the population to decline to K?
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A continuously growing population has a population size of 1,000 and an intrinsic rate of increase of r = 0.05 per year. Assuming that this rate of increase remains the same, about how long should it take for the population to reach 4,000?
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