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Species abundance in a forest community in South China: A case of poisson lognormal distribution

Journal of Integrative Plant Biology

By:
, , , , ,
DOI: 10.1111/j.1744-7909.2005.00095.x

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Abstract

Case studies on Poisson lognormal distribution of species abundance have been rare, especially in forest communities. We propose a numerical method to fit the Poisson lognormal to the species abundance data at an evergreen mixed forest in the Dinghushan Biosphere Reserve, South China. Plants in the tree, shrub and herb layers in 25 quadrats of 20 m??20 m, 5 m??5 m, and 1 m??1 m were surveyed. Results indicated that: (i) for each layer, the observed species abundance with a similarly small median, mode, and a variance larger than the mean was reverse J-shaped and followed well the zero-truncated Poisson lognormal; (ii) the coefficient of variation, skewness and kurtosis of abundance, and two Poisson lognormal parameters (?? and ??) for shrub layer were closer to those for the herb layer than those for the tree layer; and (iii) from the tree to the shrub to the herb layer, the ?? and the coefficient of variation decreased, whereas diversity increased. We suggest that: (i) the species abundance distributions in the three layers reflects the overall community characteristics; (ii) the Poisson lognormal can describe the species abundance distribution in diverse communities with a few abundant species but many rare species; and (iii) 1/?? should be an alternative measure of diversity.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Species abundance in a forest community in South China: A case of poisson lognormal distribution
Series title:
Journal of Integrative Plant Biology
DOI:
10.1111/j.1744-7909.2005.00095.x
Volume
47
Issue:
7
Year Published:
2005
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
801
Last page:
810
Number of Pages:
10