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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and released 200 fish (M) and you think the population is about 3000 (N), and
you wish the coefficient of variation of the estimated population size to be about +
25% (corresponding to a level of precision of +50%),” we have from equation ...
If we measure the radial distances (r) to each animal seen (see Figure 5.2),
Eberhardt (1978a) has shown that the coefficient of variation of the density
estimate is given by 1 1 CV(0) = : + CV2 (...) (7.20) where CV(0) = Coefficient of
variation of ...
For example, suppose that you wish to have a coefficient of variation of density of
about + 10% so that the 95% confidence interval is about +20% of the population
size. A pilot study has determined that b = 2. From equation (7.21), CV(0) = ...