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Contrast the selective pressures operating in high-density populations (those near the
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- Do density independent and/or density dependent result in carrying capacity for populations?Calculate the rate of population change for a hypothetical population of wildebeest using the logistics equation and carrying capacity equation. How can you explain these results? N = 500, r = 0.1, K = 1000, calculate dN/dt.EVOLUTION CONNECTION Contrast the selective pressuresoperating in high-density populations (those near the carryingcapacity, K) versus low-density populations.
- In the Lotka-Volterra equations for predator (P) and prey (V) population sizes, shown below, what term represents the carrying capacity for each species? dV = rV - pVP сpVP — d,P dt dP I3| dt O Pand V dP and dV p and c pVP and dpP Carrying capacity is not represented in the Lotka-Volterra equationsgive natural examples of density-independent Population regulation (e.g. aquatic weed in South America etc.)Describe at least three other limiting factors (other than the number of predators or prey) that can affect population sizes. What effect does each of these limiting factors have on the populations?
- The per capita growth rate of a population where dispersal is not a factor is expressed as (a) i + e (b) b d (c) dN/dt (d) rN(K N) (e) (K N) KMark Recapture can be written as M N = R Define each term. Use this equation to answer the following question. Show your work. A biologist for Mosaic fertilizer company catches 26 Florida scrub jays as part of their monthly environmental monitoring. Each bird is given a band. The next month, they catch 32 birds. 13 of the birds have bands. What is the estimated population size of the birds in that area?Based on the equation for logistic population growth, Logistic Growth O A. new Individuals are added most rapidly at low population sizes. This figure displays the equation for logistic population growth and visualizes population growth as a function of time (number of generations) as it approaches carrying capacity. N stands for population size, K stands for carying capacity, and r stands for intrinsic rate of increase. O B. population growth never exceeds K. C. growth rate decreases as N approaches K. D. the population keeps growing when N equals K. K= carrying capacity dN (K-N) dt Number of generations ered MacBook Air F10 F11 吕口 F3 888 F4 F5 F1 F2 $ % & * @ 7 9 2 4 Y P Q W E R F G H K A S D C V N M Z .. * CO B #3 Population size (M)
- Compare and contrast density dependent limiting factors and density independent limiting factors Density dependent both Density independent Limit population sizeFor the cricket, the intrinsic growth rate is 100 and the carrying capacity of the environment is 200,000 individuals. For the frog, the capture efficiency is 0.0002, the conversion efficiency is 0.1, the handling time per cricket is 0.2 hours, and the density-independent per capita death rate of the predator is 0.4. 18. At what value of the number of crickets is the predator population of frogs at equilibrium? 19. What is the dN/dt of the prey population when the number of frogs is 60 and the number of crickets is 11,000? Round to the nearest hundredth. 20. What is the dP/dt of the predator population when the number of frogs is 60 and the number of crickets is 11,000? Round to the nearest hundredth.Determine whether each of the following statements are true or false as argued by Legović and Geček (2010) in Impact of maximum sustainable yield on independent populations. Biotic potential is the per capita birth rate minus the death rate when the population is less than the carrying capacity. O True O False When calculating logistic growth of a population, the carrying capacity must be considered. True O False Independent populations neither compete with each other nor are part of a prey/predator interaction. True False To avoid overfishing and/or extinction, harvesting effort should be equal for all independent populations within an ecosystem. True False Harvesting effort for populations that are a food source for other populations, such as sardines and anchovies, do not need to consider the impact on higher trophic levels. True False Management procedures for an independent population should consider carrying capacity and biotic potential. True