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Updated: May 2, 2026

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
Published on: March 13, 2014
Response to Comment on "Plant diversity increases with the strength of negative density dependence at the global
Joseph A LaManna1,2, Scott A Mangan2, Alfonso Alonso3
1Tyson Research Center, Washington University, St. Louis, MO, USA. joe.a.lamanna@gmail.com.
Abstract:
Chisholm and Fung claim that our method of estimating conspecific negative density dependence (CNDD) in recruitment is systematically biased, and present an alternative method that shows no latitudinal pattern in CNDD. We demonstrate that their approach produces strongly biased estimates of CNDD, explaining why they do not detect a latitudinal pattern. We also address their methodological concerns using an alternative distance-weighted approach, which supports our original findings of a latitudinal gradient in CNDD and a latitudinal shift in the relationship between CNDD and species abundance.
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