Problem

Edge effects are a fundamental consideration in nature preserves. We usually expect to fin...

Edge effects are a fundamental consideration in nature preserves. We usually expect to find dramatic edge effects in pristine habitat with many specialized species. But you may be able to find interior-edge differences on your own college campus, or in a park or other unbuilt area near you. Here are three testable questions you can examine using your own local patch of habitat: (1) Can an edge effect be detected or not? (2) Which species will indicate the difference between edge and interior conditions? (3) At what distance can you detect a difference between edge and interior conditions? To answer these questions, you can form a hypothesis and test it as follows:

Consider ways your test could be improved. Should you take more frequent samples? larger samples? Should you compare abundance rather than presence/absence? Might you have gotten different results if you had chosen a different study site? or if your class had examined many sites and averaged the results? How else might you modify your test to improve the quality of your results?

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Solutions For Problems in Chapter 12