Question Set 3_ENVI
ENVS 105 Question Set Section #3 Fall 2014
Answer the following questions for your homework. Work on the questions after we have covered the topic in class. Bring any questions to class or office hours. These questions will help you on the exam. If you do not do them, the points will add up and hurt your grade.
To get credit, you must:
Answer all questions
Answer all parts of each question
Type your answers
Do complete and conscientious work
Write out, number, and letter all questions
Use regular font for the questions
Use bold font for your answers
1) Explain how the logistic population growth model modifies the exponential population growth model to incorporate the idea of resource limitation?
Exponential growth is possible only when infinite natural resources are available; this is not the case in the real world. Individuals will compete (with members of their own or other species) for limited resources. The successful ones will survive to pass on their own characteristics and traits (which we know now are transferred by genes) to the next generation at a greater rate: a process known as natural. To model the reality of limited resources, population ecologists developed the logistic growth model.
2) Using the Exponential Growth Model determine which of the following populations would be growing the fastest. Show your work. You can use a calculator.
A population with an r of .015 and N of 7000
A population with an r of .17 and N of 70
A population with an r or .093 and N of 573
3) Using the Logistic Growth Model, determine which of the following populations would be growing the slowest. Show your work. You can use a calculator.
A population with an r of .027, N of 7000, and K of 8400
A population with an r of .17, N of 70, and K of 750
A population with an r or .093, N of 573, and K of 800
4) Why can’t density independent factors regulate the size of a population to prevent it from overshooting carrying capacity?
When the
Answer the following questions for your homework. Work on the questions after we have covered the topic in class. Bring any questions to class or office hours. These questions will help you on the exam. If you do not do them, the points will add up and hurt your grade.
To get credit, you must:
Answer all questions
Answer all parts of each question
Type your answers
Do complete and conscientious work
Write out, number, and letter all questions
Use regular font for the questions
Use bold font for your answers
1) Explain how the logistic population growth model modifies the exponential population growth model to incorporate the idea of resource limitation?
Exponential growth is possible only when infinite natural resources are available; this is not the case in the real world. Individuals will compete (with members of their own or other species) for limited resources. The successful ones will survive to pass on their own characteristics and traits (which we know now are transferred by genes) to the next generation at a greater rate: a process known as natural. To model the reality of limited resources, population ecologists developed the logistic growth model.
2) Using the Exponential Growth Model determine which of the following populations would be growing the fastest. Show your work. You can use a calculator.
A population with an r of .015 and N of 7000
A population with an r of .17 and N of 70
A population with an r or .093 and N of 573
3) Using the Logistic Growth Model, determine which of the following populations would be growing the slowest. Show your work. You can use a calculator.
A population with an r of .027, N of 7000, and K of 8400
A population with an r of .17, N of 70, and K of 750
A population with an r or .093, N of 573, and K of 800
4) Why can’t density independent factors regulate the size of a population to prevent it from overshooting carrying capacity?
When the