Lognormalbirds


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'.
Some ecological considerations suggest that a log-normal distribution should fit the data. S - the number of species observed and area under the curve to the left of 1/2  are used together to estimate the number of 'unseen' species. 


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

Lognormalbirds function

A data frame with 305 observations on the following 3 variables.
  <dl>
    <dt><code>Site</code></dt><dd>The sites</dd> <dt><code>Abundance</code></dt><dd>The number of species with abundance r each</dd> <dt><code>Species</code></dt><dd>The numberof individual birds sighted </dd> </dl> 

Format

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

Lognormalbirds: Species abundance distribution

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