Logseriesbirds


4. One approach to biodiversity measurement is fitting a distribution to species abundance data. In the present case data on abundance of different species is recorded at two Indian localities in western-ghats (Arvind and Dhoni). These data are said to be 'Frequency of frequency'.
Here 14 species were encountered only once. There were 9 species such that exactly two individuals of each species were seen etc.
Some ecological considerations suggest that a log-series distribution should fit the data. Parameter of the log-series distribution (called Fisher's $alpha$) is taken as indicator of diversity. Higher the value of parameter, higher is the diversity.


datasets

Collection of datasets as prepared by Profs. A.P. Gore, S.A. Paranjape, and M.B. Kulkarni of Department of Statistics, Poona University, India. With their permission, first letter of their names forms the name of this package, the package has been built by me and made available for the benefit of R users. This collection requires a rich class of models and can be a very useful building block for a beginner.

Prabhanjan Tattar

100 Data Sets for Statistics Education

Logseriesbirds function

A data frame with 179 observations on the following 3 variables.
  <dl>
    <dt><code>Site</code></dt><dd>The site</dd> <dt><code>Abundance</code></dt><dd>The number of individual birds sighted</dd> <dt><code>Species</code></dt><dd>The number of species with abundance r each</dd> </dl> 

Format

http://ces.iisc.ernet.in/hpg/nvjoshi/statspunedatabook/databook.html

Logseriesbirds: Species abundance distribution

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