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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O O O O Figure 5.1 Schematic view of the method of line transect sampling. The
census zone is the whole area of the square. Only one transect is shown for
illustration. The observer moves along the transect line and the distances
indicated by ...
over the first 3 meters from the transect line, but this is apparently only chance
variation, and the first shape-restriction on these data would be that the shoulder
width be at least 3 meters. A second restriction is the upper limit to the sighting ...
or n = 200 Alternatively, if the perpendicular distances (x,) are used in a line
transect estimator (such as equation [5.7]), Eberhardt (1978b) suggests that the
approximate coefficient of variation is CV(0) = ...