EEB100F08EcolBKey

EEB100F08EcolBKey - EEB 100 Fall 08 Version B Name & ID_...

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EEB 100 Fall 08 Version B Name & ID________________________________ Page 1 of 7 • Don’t open your exam until instructed to. • Write your name and student number on every page of the test before handing in the test (you will lose 10 points if you don’t!). • Answer written questions in space provided. Do not write on the back. Only answers on the front side of pages will be graded. NO EXCEPTIONS. If you must cross something out and run out of room to answer the question in the space provided, you must request another blank exam page. Turn off all electronic devices and put them away. They are not to be out on desks If you need to use the restroom, turn in your exam to a TA. Only one student may leave the room at a time. You may not leave the room with any electronic devices. Turn in your notes page with your exam. • Good luck! I hereby certify that I have neither given nor received any aid on this exam, and that I have read and understand the instructions above. Sign your name here:_____________________________________
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EEB 100 Fall 08 Version B Name & ID________________________________ Page 2 of 7 PUT YOUR NAME ON EVERY PAGE OF THE EXAM BEFORE STARTING. Exam is 360 pts total 1. A forest fire has destroyed a forest that has been dominated by Douglas Fir for centuries. You start an experiment examining the successional sequence as the forest regrows. In one set of replicate plots, you plant lupines at higher than normal densities (“lupine plus”), in another set, you remove any lupine seedlings that appear (“lupine minus”), the last set of replicates are unmanipulated, so lupines colonize and grow at natural densities (“control”). After several years, you record the data on the number of Douglas fir seedlings in each plot. . a. (10 pts) What type of succession is this? b. (10 pts) What successional mechanism is operating? Secondary succession c. (40 pts) What are the independent and dependent variables? Are they interval, ordinal, or categorical? (Assume you are only using the data in the graph above). Independent= treatment, categorical
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This note was uploaded on 12/06/2011 for the course EEB 100 taught by Professor Halpin during the Fall '08 term at UCLA.

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EEB100F08EcolBKey - EEB 100 Fall 08 Version B Name & ID_...

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