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- Using the life table: a) what is R0 for this population? b) Based on R0 from your previous answer, is this population :growing, stable or declining? c) what is the most likely survivorship curve for this population? type 1, 2, or 3?This graph plots the difference between birth rates and death rates in Mexico during the 20th century. During which quarter century did Mexico experience the greatest rate of population growth? a) 1900–1925 50 b) 1925–1950 40 c) 1950–1975 Rate of 30 increase d) 1975–2000 20 Birth rate Death rate 10 1900 1925 1950 1975 2000 2025 2050 Year Adapted from Transitions in World Population, Population Bulletin 59: 1 (2004). © 2018 Pearson Education, Inc. Birth or death rate per 1,000 populationThe 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
- 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.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.b) Figure 7 shows population growth of Proboscis monkeys over time. 2.0E carrying capacity V 1.5- Monkey populations 1.아- 0.5- Time Figure 7 i) State the type of population growth. ii) Proboscis monkeys nomally live in groups in their natural habitat. What is the dispersion pattern for this monkey population? iii) Describe what happens to Proboscis monkey population at V. 12 iv) Give one (1) possible example of density-dependent factor that affects the Proboscis monkey population.
- Speculate upon the calculation shown in the table and Graph; Briefly explain: a)Do the cohort survivorship curves from each decade different from one another? If so, what might have caused the differences? b)Were the population growing while the cohort was extant? c)How would the data have been altered if Woodland Cemetery had stopped excepting interments in 1950 rather than being open to the present day? d) One problem with studying survivorship curves is that a birth cohort must be followed through until the death of the last individual. How would the shape of a 1960's cohort survivorship curve be altered from those of the 1800's?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.What are the two key concepts for this section? Listthree variables that affect the growth and decline ofhuman populations. How can we calculate the population change of an area? Define the total fertilityrate (TFR). How has the global TFR changed since1955? Summarize the story of population growth inthe United States. List six changes in lifestyles thathave taken place in the United States during the 20thcentury, leading to a rise in per capita resource use.
- For each organism, create a survivorship curve by plotting the given information in a line graph. Title each graph "Survivorship Curve for [name of organism]." The y-axis should be labeled "Survivorship" and contain low, medium, and high indicators. The x-axis should be labeled "Life Span" and contain young, middle-aged, and old indicators. American toads practice explosive reproduction. During the first warm days in spring, both males and females migrate from forests and converge on ponds. Reproduction is quick, taking only a few days. Females lay hundreds of eggs in jelly-filled sacks along the sides of the pond or stream. As soon as the eggs are laid, males and females abruptly leave the pond. Even before they hatch, the offspring are prone to high rates of predation. Many offspring die before they reach adulthood. Of the offspring that do survive, some will die in adulthood, and some will live their entire natural life span.If 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…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?