Let us assume that an insect population in its first year has 5 individuals, in its second year has 10 individuals, and in its 3 (and current) year has 20 individuals. Assuming they mate continuously, what will the size of the population be next year (year 4) given that the population growth has a 2-year time delay and a growth rate of 1.2? Assume that the carrying capacity is 200. O 41 23 05 O 20 O 43 53 O21 O 10
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- In a habitat there are 7,500 individuals of P. rufipes, 40% of which have long and thin ovipositors and 60% have short and thick ovipositors. During a single year 250 wasps with long and thin ovipositors died while 325 were born. In that same year, 650 wasps with short, thick ovipositors were born and 800 died. Calculate the per capita growth rate (r) of the two subpopulations of P. rufipes. Per capita growth rate of P. rufipes with long and thin ovipositors: _________ Per capita growth rate of P. rufipes with short and thin ovipositors: _________Given 0.463 net reproduction per capita and a carrying capacity of 373 of a nature reserve , if 52 individuals are introduced into this nature reserve in 2011 for the first time, when will the population size reach 306 individuals?4. Looking at Figure 2.2, what type of age structure is observed during the month of December? What does this imply? 5. Considering Figure 2.2, in which month is the population rapidly increasing? rapidly decreasing? Discuss the environmental factors (i.e. availability of resources and conditions) that affected the population growth of the bee colony. 6. Based on the line graph in Figure 2.2, was carrying capacity reached? Support your answer.
- Deer Population on an Island 120 100 96 80 78 60 6아 40 36 20 TO 1 2 3 4 5 6 7 8 9 10 11 12 Number of Months Dear population 1-During which months was the growth of the deer population exponential? | 2-Give one possible reason why the population decreased after 5 months 3-What is the approximate carrying capacity of the island? 4-Explain "carrying capacity" 5-What type of density independent factors may cause the population to decrease (name 2)? 6-What type of density dependent factors may cause the population to decrease (name 2)? 7-Overall, do deer populations seem to exhibit exponential or logistic growth? Explain why Number of DeerWhat is often true of a population of organisms with a type Il suvivorship curve? they produce few offspirng and invest more energy in each offspring they produce more offspring and invest little energy in each they have low death rates during early life stages they are equally likely to die at any agewhat type of survivorship curve is present here? (type I, type II, type III) how would you describe the death rate of the bee population throughout the life stages?
- A population of boreal toads has a current size of 100 and time steps are measured in years. If the instantaneous rate of increase is 0.8 (toads/(toadXtime)), what will the expected population size be after two years? Note: You need to first figure out which equation to use for this problem. O 64 toads O 117 toads O 495 toads O 6400 toads No toads will be left because the instantaneous rate of increase is less than 1.0.A few plant-eating salamanders manage to float on a log to a large island in the Pacific that did not have any other salamander species previously. The salamanders find the island has abundant plants for food and no predators. On average, a salamander has four offspring per year and lives for one year. Refer to the equation for the logistic growth model if you were modeling salamnder population growth with this logistic growth equation, during the first few years, a) N<K b) N=K c) N>K d) there is no relationship between N and KDuring a one-year period, a population of rabbits has a birth rate of 0.8 and a death rate of 0.1. The rabbit population consists of 50 organisms (at the beginning of the year). Which of the following is true about the rabbit population during this one-1 year period? O The rabbit population would increased by 35 rabbits during this year. O The rabbit population would decrease by 35 rabbits during this year O There would be a total of 500 rabbits at the end of the year 500 rabbits were born during the year.
- A mess of 40 iguanas moved to a new island which is so large that the carrying capacity is essentially non-existent. The growth rate for these island iguanas was 0.6 and they have a generation time of 2 years. How many iguanas do you expect to find on the island after 6 years? (Show your work. Round your final answer to the nearest whole iguana and clearly indicate your final answer).In January 2010, a population of organisms had a size of 564. By the end of the year 109 of those individuals had died, but 384 were born. what is the net reproduction per capita for this population?Using the logistic equation, calculate population growth when K =1,000, N = 100, and r = 0.1. Compare the result with that shown inSection 56.3, where K = 1,000, N = 900, and r = 0.1, and with theresult when K = 1,000, N = 500, and r = 0.1.