Jsing the life table below, what is the population growth rate? Number of Survival rate fecundity Age class (x) individuals (n x) (Sx) |(bx) 30 0.8 1 15 0.6 1 2 10 0.4 2 3 5 4 Total 60
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- Which set of values for the intrinsic rate of increase, finite rate of increase, and net reproductive rate could describe the same growing population? (Note: you should not need to do any math to figure this one out. Just think through general interpretations of each parameter) Or = -0.14, A = 0.87, RO = 0.5 r = 3.0, A = 0.22, RO = 0.5 r = 0.22, A = 1.25, RO = 3.0 %3! r = = 0.22, A = -0.14, RO = 0.5If the population of 150 squirrels at UofL has 15 births this year, what is the per capita birth rate? - 0.1 squirrels/yr/squirrel If the population of 150 squirrels at UofL has 10 deaths this year, what is per capita death rate? - 0.067 squirrels/yr/squirrel Calculate the intrinsic rate of increase for this squirrel population, using your answers to the questions above. - 0.03 squirrels/yr/squirrel Between having plenty of shelter in the trees and scavenging through the campus garbage, UofL squirrels have seemingly unlimited resources. Using the information you've calculated so far, determine the growth increment for the coming year for the UofL squirrel population. - 4.5 squirrels/yr Let's say that, after you calculated your predictions for unlimited growth of the UofL squirrel populations in the questions above, a bad storm comes through campus and wipes out half the trees! Now, the growth of the population of squirrels becomes limited. There are still 150 squirrels, but the…The life table below is for a species of lizard. Use it to answer the questions below. It can be copied and pasted in excel or downloaded here. What is the intrinsic rate of increase of this population? nx bx 678 1 102 31 3 19 10 4 14 12 5 12 12 6 10 14 7 10 10 8 8 11 9 7 10 1.89 0.053 O 1.32 0.51
- For simplicity, the monthly data has been summed into yearly totals.Survival: 60 were alive at the start the experiment (year = 0), 20 at the start of thenext year (year 1), 8 at year 2, 1 at year 3, and 0 at year 4.Fecundity: during year 0, no babies were produced; year 1- females produced anaverage of 4 babies each; year 2 - 8 babies each; and year 3 - 8 babies each.”Determine the net reproductive rate (R0), generation time (T) and per capita rate ofincrease (r) for this population.If the incidence rate of a very serious disease is 25/100,000 person-years and the prevalence of this disease in the population is 75/100,000, what is the average survival time of individuals who contract this disease? [Assume the population is in steady state] * Hint* Formula (D=P/IR)If each adult female powerful owl produces 1 female juvenile (F) each year, the adult survival rate (Sa) is 0.8, the juvenile survival rate (Sj) is 0.4, and the population is N2022=1400 adult females and 1400 juvenile females in 2022, what will be the female population size in 2027 (N2027)? Show your calculations. (hint: use excel to set up a model and check your work)
- What is shown in the graph? A) B) D) 40,000 Population exponential decay of a population exponential growth of a population arithmetic progression of a population an inverse relation between time and population Time 10 hrA 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.Calcuate the lx(Survivorship which is equal to proportion of population surviving from birth) and survivorship per 1000 individuals S1000= lx*1000. Calculate Fecundity bx
- During 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.There are 10 people in age class 0, 10 in age class 1 and 5 in age class 2. Annual survival rates are S0=0.7, S1=0.5 and S2=0. The fecundities are F0=0, F2=1 and F2=5. What is the asymptotic population growth rate and it is reached after approximately how many years of population growth?S2) Below are two tables showing the population size and deaths by age for one year in the states of Louisiana (LA) and Florida (FL). Use the data to answer the following questions. You may use the blank cells in the tables for calculations and to show answers Age group 0-15 16-70 71+ Louisiana Deaths 30 215 585 Florida Age group Deaths 0-15 16-70 71+ 25 400 725 Population 165,000 300,000 75,000 Population 90,000 435,000 225,000 a. Calculate the overall crude mortality rates for LA and FL expressed as per 100,000 population. LA: FL: b. Calculate the age-adjusted mortality rates using the combined population as the standard. c. Explain what accounts for this difference in crude rates and adjusted rates between LA and FL.