Spatial pattern model of herbaceous plant mass at species level

Individual plant species distribute according to their own spatial pattern in a community. In this study, we proposed an index for measuring the spatial heterogeneity in mass (dry weight) of individual plant species. First, we showed that the frequency distributions for mass of individual plant spec...

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Bibliographic Details
Published in:Ecological informatics 2014-11, Vol.24, p.124-131
Main Authors: Chen, Jun, Shiyomi, Masae
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Biological and medical sciences
Exponential distribution
Fundamental and applied biological sciences. Psychology
Gamma distribution
General aspects. Techniques
Herbaceous plant community
Methods and techniques (sampling, tagging, trapping, modelling...)
Random spatial pattern
Spatial heterogeneity
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Summary:Individual plant species distribute according to their own spatial pattern in a community. In this study, we proposed an index for measuring the spatial heterogeneity in mass (dry weight) of individual plant species. First, we showed that the frequency distributions for mass of individual plant species per quadrat in a plant community are expressed using the gamma distribution with two parameters of λ (mean) and p. The parameter p is a measure indicating the level of spatial heterogeneity of plant mass as follows: (1) when p=1, the plant mass per quadrat has a random pattern; (2) when p>1, the plant mass has a spatial pattern with a lower heterogeneity than would be expected in the random pattern; and (3) when p
ISSN:1574-9541
DOI:10.1016/j.ecoinf.2014.08.001