Not even wrong: Comment by Loreau and Hector

Michel Loreau (1) , Andy Hector (2, 3)

1 SETE - Station d'écologie théorique et expérimentale
2 Department of Plant Sciences
3 University of Oxford

The Loreau and Hector (2019) Comment on our paper (Pillai and Gouhier, 2019) failed to address the two core elements of our critique, both the circularity of the BEF research program, in general, and the mathematical flaws of the Loreau-Hector partitioning scheme, in particular. Loreau and Hector avoided dealing with the first part of our critique by arguing against a non-existent claim that all biodiversity effects could be reduced to coexistence, while the mathematical flaws in the Loreau-Hector partitioning method that we described in the second part of our critique were ignored altogether. Here, we address these misconceptions and demonstrate that all of the claims that were made in our original paper hold. We conclude that (i) BEF studies need to adopt baselines that account for coexistence in order to avoid overestimating the effects of biodiversity and (ii) the LH partitioning method should not be used unless the linearity of the abundance-ecosystem functioning relationship in monocultures can be verified for all species.

Mots clés: biodiversity; ecosystem functioning; coexistence; Loreau-Hector additive partitioning; nonlinearity

Domaines: Sciences de l'environnement; Biodiversité et Ecologie

Michel Loreau, Andy Hector. Not even wrong: Comment by Loreau and Hector. Ecology, 2019, 100 (10), ⟨10.1002/ecy.2794⟩. ⟨hal-02353008⟩