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 wide confidence limits reflect the small sample size in this hypothetical
example. When should one consider using ... 8.4 SYSTEMATIC SAMPLING
Ecologists often use systematic sampling in the field. For example, mouse traps
may be ...
Figure 8.4 Example of a study area subdivided into 20 equal-size squares with
one sample taken at the center of each square. This is a centric systematic area-
sample. Statisticians have usually condemned systematic sampling in favor of ...
B § g g A A A A A A # T * B B § - 8 B - B B -T —T- I l I I I i i —l Distance along
transect line Figure 8.5 Hypothetical illustration of periodic variation in an
ecological variable and the effects of using systematic sampling on estimating the
mean of ...