Neco Model Questions Vol1 2020 Biology Question 23
Practice objective / multiple choice question 23 from the 2020 Neco Model Questions Vol1 Biology examination.
In a lake, a fish population follows the logistic growth model \(\frac{dN}{dt}=rN\left(1-\frac{N}{K}\right)\) with intrinsic growth rate \(r = 0.5\ \text{year}^{-1}\) and carrying capacity \(K = 20\,000\) fish. The population is initially \(N_0 = 5\,000\) fish. After two years, a constant harvest of \(H\) fish per year is introduced. (a) Determine the maximum sustainable harvest rate \(H_{\max}\) (in fish per year) that will allow the population to persist without extinction. (b) Under this maximum harvest, what is the equilibrium population size? Give your answers as whole numbers.
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This is Neco Model Questions Vol1 2020 Biology Question 23. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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