Exam 2 - Regis

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26. Contrast resource partitioning and character displacement. Give a brief example of each. 27. Draw and label the three main dispersal patterns organisms exhibit in nature. Give an example of each and describe why it would show that pattern. 28. Draw the three types of life curves and give an example organism for each one. Be sure to label the axes. 6
Part Three: Longer-answer questions. Answer both questions and please use only the space provided. These questions are worth eleven (11) points each. 30. Suppose you are involved in a project constructing a life table for a population of a small perennial plant. Currently, there are 650 plants that are less than a year old, 347 that are between 1 and 2 years of age, 123 that are between 2 and 3 years old, and 55 that are older than 3 years. Based on previous work, the expected survival rates of plants that are less than a year old, between 1 and 2, and between 2 and 3 are 0.4, 0.6, and 0.8, respectively. Set up the correct life table using Nx, Sx, and calculate lx (5 points). Assuming that the expected survival rates remain the same, how many plants between 2 and 3 years of age should you expect to see in 12 months? Show your work (3 points) Assuming that the expected survival rates remain the same, how many plants between 2 and 3 years of age should you expect to see in 24 months? Show your work (3 points) 7
Page 1 and 2: Principles of Ecology BL / ENVS 402
Page 3 and 4: 9. An evolutionary ecologist is int
Page 5: 21. Many species of butterflies are

Exam 2 - Regis

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