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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Correct the estimates for bias; try to remove sources of inaccuracy in the
sampling program. 3. Use aerial census as a measure of relative density,
recognizing that it is biased and that the bias cannot be removed or estimated,
but only held ...
LeResche and Rausch concluded that aerial counts were not valid estimates of
absolute moose numbers because of the large counting bias. Caughley (1974)
listed 17 analyses of the accuracy of aerial censusing for large mammals, and the
Bootstrap estimates of parameters are known to be biased, If the true population
value for the mean (for example) is u, and if the observed mean of the whole
original sample is Xs, the bootstrap estimate of the mean Xa will be biased