Logseriesbirds: Species abundance distribution

Description Usage Format Details Source

Description

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.

Usage

1

Format

A data frame with 179 observations on the following 3 variables.

Site

The site

Abundance

The number of individual birds sighted

Species

The number of species with abundance r each

Details

Fitting Log-series distribution and Chi-square test for Goodness of fit are appropriate tools for this data set.

Source

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


gpk documentation built on May 2, 2019, 12:39 p.m.