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- 1. After completing a life table for a population of beaver, you determine that the Net Reproductive Rate (Ro) = 5.44. Determine A and r.7) The following data has been obtained from the coastal haddock (Melanogrammus aeglefinus) fishery of Maine. The fishing season was divided into 10 periods. Period Catch per Period 1 208 2 195 3 168 4 132 5 91 6 80 7 63 8 56 9 48 10 33 It was also recorded that five fishing trawlers were in operation during each period of the fishing season. Question: What was the size of the haddock population originally available to the fishery?1. Study the 3 diagrams showing hypothetical moose populations with 2 different dispersion pattern.Describe how the moose are dispersed in each diagram2. The shaded portions of the diagrams show the transects that were used to sample each population.What proportion of the total study area (defined by the box) was sampled in each of the three cases?3. Count the number of moose encountered within the transect areas for each case. Do not count the total number of moose in any of the diagrams. From these counts, estimate the size of the 3 moose populations. 4. The actual numbers of moose in the 3 populations are 60, 133 & 133, respectively. How close were your estimates? What do you think affected the accuracy of the estimates in each case?5. How would you design a sampling experiment on a wild population? Note that in real life, the time & expense involved usually restricts the proportion sampled to between 10-20% of the total area of interest.
- 2. As a fish farm manager, you need to prepare a pond of size 1.0 Ha for stocking 5.0 g Nile tilapia fingerlings. a. Describe the steps you will take to successfully do the stocking b. Calculate the total number of fingerlings that will be stocked if the stocking rate is 10 fish/m2. c. Suggest with reasons the type, pellet size and quantity of feed you would give to the stocked fish/day in the first week of stocking.11. Calculate the estimated population size, N, given a study that initially marked 100 animals and subsequently captured 50, of which 25 were marked. 12. When sampling a species that has clumped distributions, which approach listed below is best? A) sampling at random locations B) counting every individual C) calculating an ecological density D) assuming a uniform distribution1. If there are 500 eagles in a population in year 1, and 550 eagles in the population in year 2, what is 2? a. What equation will you use? (Hint: the goal is to caleulate 2) b. What is 2? ANSWERS:
- 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.11. To measure the population of monarch butterflies occupying a particular park, 10 butterflies were captured, marked with a small dot on a wing, and then released. The next day, another 50 butterflies are captured, including the recapture of 5 marked butterflies. What will be the estimated population size?1. Based on the graph, determine the population of carabao in: i. 4 years: 2. Based on the graph, determine the population of carabao in: ii. 5 years:3. Based on the graph, determine the population of carabao in: iii. 6 years:4. What is the maximum carrying capacity of carabao in the given ecosystem? 5. How many years did it take for the carabao to reach its carrying capacity? Explain your answer
- 1) How did the removal of sea otters affect the population of two other organisms? Please explain. (grey means they are no longer available in that ecosystem).3. A 1998 study of grizzly bears in the Kananaskis area estimated the population size at 48 to 56 individuals. The study area encompassed 4000 hectares. a) Use the values to determine maximum and minimum density estimates for the population.1. Based on the graph, determine the population of carabao in:i. 4 years: _______ii. 5 years: _______iii. 6 years: _______2. What is the maximum carrying capacity of carabao in the given ecosystem?3. How many years did it take for the carabao to reach its carrying capacity? Explain your answer.