5. As the scientist and his team of TAs are performing their survey, they are able to make many observations. Identify each observation below with the correct type of population regulation: density dependent or density independent regulation.
a. Ravens are unable to nest on campus because the crows will attack them.
b. An exceptionally rainy season created some flooding on campus, which wiped out the cricket population in that region..
.High squirrel population density caused female squirrels to inhabit poor quality territories, which reduced their reproductive success.
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6. While the researcher and TAs were outside, microbiologists were inside of the science building performing experiments using E. coli. Examine the graph below to answer the questions.
a. Calculate the mean rate of growth from day 2 to day 4 .
b. What is the carrying capacity?
c. How would this growth curve for E. coli be affected if it were cultured with a competing bacteria?
7. After an extensive survey of habitat and food availability for the squirrel population of 640 , the scientist concluded that they have a carrying capacity of 950 squirrels. What is the maximum population growth rate if the population grows to be 720 in one year?
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8. Let's say in five years, the scientist comes back to analyze the Show work here: finds that the squirrel population has stabilized around 945 squirrels. Using this data he calculates the \( \mathrm{r}_{\max } \) to be 0.43 . With the campus expanding, more area will be available for the squirrels to inhabit. What will the population size of squirrels be one year after the campus has expanded if it increases the carrying capacity to 1200 ? Assume \( r_{\max } \) does not change.