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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Using the same general approach shown in Figure 5.5, we can make two kinds of
measurements: 1. from random points to the nearest organism 2. from a random
organism to its nearest neighbor. There is in principle no problem with setting ...
The point-quarter technique has been a commonly used distance method in
forestry. It was first used in plant ecology by Cottam et al. (1953) and Cottam and
Curtis (1956). Figure 5.10 illustrates the technique. A series of random points is ...
(Figure 5.9) in preference to point-quarter sampling, but more field data are
needed to test these potential biases when organisms are clumped and not
spread in a random pattern. If point-quarter sampling is used, it is important to
measure the ...