Benjamin/Cummings, 1999 - Science - 620 pages
This coherent text translates the methods of statisticians into "ecological English" so that students may readily apply these methods to the real world. Ecological Methodology, Second Edition provides a balance of material on animal and plant populations. It teaches students of ecology how to design the most efficient tests in order to obtain maximum precision with minimal work. The first part of the text focuses on biological and technical issues in statistical methodology. Students learn about advances that have been made in designing better sampling devices, along with the techniques and equipment used for sampling. The second part deals with creating solid statistical design, and presents all methods that are well-known to statisticians in a language and context that students will easily understand.
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If the ratio Xls, where s is the total number of sampling times, is less than about
0.25, a Poisson distribution can be fitted as an approximation ... Given m, we can
obtain the expected frequency distribution: Expected number of animals U _e "m"
(b) Expected frequency distribution based on the Poisson. frequency distribution
would look like if it were generated by completely random processes. In
biological terms this is equivalent to asking if the organisms are distributed
randomly in ...
To use this test, you must first group the observed measurements of nearest-
neighbordistances into a frequency distribution (see Box 6.2 for an illustration).
The class limits for the frequency distribution must be chosen in advance, and