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Updated: May 2, 2026

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
Published on: March 13, 2014
Comment on "Plant diversity increases with the strength of negative density dependence at the global scale"
Ryan A Chisholm1,2, Tak Fung3
1Department of Biological Sciences, National University of Singapore, 117558 Singapore. ryan.chis@gmail.com.
Abstract:
LaManna et al (Reports, 30 June 2017, p. 1389) found higher conspecific negative density dependence in tree communities at lower latitudes, yielding a possible mechanistic explanation for the latitudinal diversity gradient. We show that their results are artifacts of a selective data transformation and a forced zero intercept in their fitted model. A corrected analysis shows no latitudinal trend.
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