Quadrat Analysis_RW_Thomas

Mcconnell and horn proposed that the distributions of

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Unformatted text preview: s such that a double Poisson model would account for the frequency distribution of all depressions. We have already seen that the operation of two random processes at different densities leads to a clustered distribution, and in this instance a double Poisson model developed by Schilling (1947) was selected as being the most appropriate. Alternatively, LaValle suggested that the following process was the more likely. Independently of time, the random occurrence of a karst depression leads to an increased probability of subsequent depressions being formed in that cell because, around the original depression, local erosional processes would be accelerated by increased diversion of runoff into the subterranean drainage system. This second description leads to the selection of the negative binomial as the appropriate probability model for the frequency distribution of karst depressions. Table 7 illustrates the results of fitting the negative binomial, by maximum likelihood estimation, and Schilling's d...
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