A population of grey squirrels started with one pair and grows logistically with annual r = = 1 and K = 42. Use the logistic growth equation to predict the population size 14 years after the first pair arrived.
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- In a graph of population size versus time, a J-shaped curve is characteristic of (a) exponential population growth (b) logistic population growth (c) zero population growth (d) replacement-level fertility (e) population growth momentumDescribe the difference between population density and dispersion Why do you think the population is located this way?Which statement best describes the recovery of the Mexican wolf population? A. It is experiencing logistic growth because the rate of population growth increases without slowing. B. It is experiencing logistic growth because the rate of population growth increases but slows with time. C. It is experiencing exponential growth because the rate of population growth increases without slowing. D. It is experiencing exponential growth because the rate of population growth increases but slows with time.
- Name two density-dependent and two densityindependent factors that can limit the size of a population.Give the equation for verhulst-poarl logistic growth of population.The mark-recapture method is used to estimate the population size of mountain yellow-legged frogs in the San Gabriel Mountains of southern California. 100 frogs are captured and marked. A week later, 50 frogs are captured, and 10 of them are marked. The total population size is
- You are studying a density - dependent turtle population that has the following relationships for the birth rate b’ and the death rate d’ as a function of population size (N) : b’ = 0.10 + 0.03 N - 0.0005 N ^2 d’ = 0.20 + 0.01 N Plot these functions in the same graph and discuss the population dynamics of the turtle. How does this model differ from the simple logistic model with linear birth and death functions?Given that white-tailed deer give birth to fawns each spring, which population growth model would be the most appropriate and why?Figure (c) shows a population increasing in size under the influence of the relationships in (a) and (b). What do each arrow represent?
- Give typing answer with explanation and conclusion Scientists are trying to estimate the size of a bird species whose local population is 325. Since they cannot see all 325 at once, they will estimate it using mark-recapture methods. They initially capture 64 individuals, mark them, and release them. They then recapture 50. What is the most likely number of MARKED birds in their recapture sample? (You may need to round up or down for the correct answer.) Multiple Choice -50 -1 -10 -5 -0 -253If models that display population growth ignored age structure how would this limit their value for predicting furture population size? Reference to either lx or mx.Contrast exponential and logistic (= sigmoid) growth of a population. Under what conditions might you expect a population to exhibit ex-ponential growth? Why can exponential growth not be perpetuated indefinitely?