A Bestiary of Experimental & Sampling Designs
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چکیده
Page 1 Rough Draft A Bestiary of Experimental & Sampling Designs In an experimental study, we have to decide on a set of biologically realistic manipulations that include appropriate controls. In an observational study, we have to decide which variables to measure that will best answer the question we have asked. These decisions are very important, but they are not the subject of this chapter. Instead, this chapter discusses specific designs for experimental and sampling studies in ecology and environmental science. The design of an experiment or sampling study refers to how the replicates are physically arranged in space, and how those replicates are sampled through time. The design of the experiment is intimately linked to the details of replication, randomization, and independence (see Chapter 6). Certain kinds of designs have proven very powerful for the interpretation and analysis of field data. In contrast, even a sophisticated statistical analysis cannot rescue a poor design.
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