Document: Smoking Cessation Induces Profound Changes in the Composition of the Intestinal Microbiota

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High PD (phylogenetic diversity) and high PD-endemism found in the human intestinal microbial communities after smoking cessation.

See  Biedermann L, et al. (2013) Smoking Cessation Induces Profound Changes in the Composition of the Intestinal Microbiota in Humans. PLoS ONE 8(3). 

PD results appear in their Figure S8

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Abstract

Phylogenetic diversity (PD; Faith 1992) is a standard part of the toolbox in microbial ecology.

The Biedermann L, et al. study is interesting in also applying PD-endemism - the amount of phylogenetic diversity (PD) unique ot a given sample or habitat. 

(see the original study of beetles in NSW in: Faith DP, Reid CAM, Hunter J (2004) Integrating Phylogenetic Diversity, Complementarity, and Endemism for Conservation Assessment. Conservation Biology 18 (1): 255–261. )

In Biedermann L, et al, Figure S8, labels I1, I2, I3 designate results for those who ceased smoking, after time 1 (I1).

Controls are given by N (non-smokers) and S (smokers) over  the same time periods.

There are substantially higher PD (phylogenetic diversity) and  PD-endemism values in the intervention group after smoking cessation.

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