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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TABLE 2.6 DATA FOR LESLIE'S TEST OF EQUAL CATCHABILITYa Number of
birds Number of Year recaptured, g, captures, x Number of birds, f. 1947 7 O 15
1948 7 1 7 1949 6 2 7 1950 4 3 2 1951 7 4 1 Total recaptures = 31 5 0 Total birds
For these 15 moths, we record the following capture history with respect to the
samples taken on days 2, 3, and 4: No. of moths Day recaptured, g, 2 5 (4 gw, l
gwbo) 3 8 (2 gb, 5gbo, 1 gwbo) 4 8 (2 go, 5 gbo, 1 gwbo) Total recaptures = 21
An obvious extension of this method is to sample sequentially until we reach a
predetermined number of recaptures. Sample size thus becomes a variable. The
procedure is to stop the Schnabel sampling at the completion of samples, with s ...