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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The expected frequencies for a theoretical negative binomial can be calculated
from the individual terms given previously. To illustrate, we use the aphid data in
Box 4.2: n = 50 X = 3.46 k = 2.65 Proportion of stems expected to have zero ...
The observed number and direction of moves to regularity in the Figure 6.6 An
illustration of the SADIE approach to measuring the distance to regularity for a
spatial map of 12 sycamore aphids. (1) The starting arrangement of the 12 aphids
For the green peach aphid, prior work (Figure 9.8) has shown that the variance
and the mean density are related linearly by in which density is expressed as
aphids per sugar beet plant, and the sampling unit (quadrat) is a single plant ...