Partitioning selection and complementarity in biodiversity experiments

Nature
M Loreau, A Hector

Abstract

The impact of biodiversity loss on the functioning of ecosystems and their ability to provide ecological services has become a central issue in ecology. Several experiments have provided evidence that reduced species diversity may impair ecosystem processes such as plant biomass production. The interpretation of these experiments, however, has been controversial because two types of mechanism may operate in combination. In the 'selection effect', dominance by species with particular traits affects ecosystem processes. In the 'complementarity effect', resource partitioning or positive interactions lead to increased total resource use. Here we present a new approach to separate the two effects on the basis of an additive partitioning analogous to the Price equation in evolutionary genetics. Applying this method to data from the pan-European BIODEPTH experiment reveals that the selection effect is zero on average and varies from negative to positive in different localities, depending on whether species with lower- or higher-than-average biomass dominate communities. In contrast, the complementarity effect is positive overall, supporting the hypothesis that plant diversity influences primary production in European grasslands throug...Continue Reading

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Citations

Dec 25, 2010·Applied Microbiology and Biotechnology·Andrea FranzettiGiuseppina Bestetti
Apr 15, 2011·Applied Microbiology and Biotechnology·Suzanne ReadNico Boon
Jun 9, 2005·Oecologia·Jennifer A RudgersJennifer M Koslow
Feb 2, 2006·Oecologia·Ross A ColemanStephen J Hawkins
Jan 15, 2008·Oecologia·Ernesto I Badano, Pablo A Marquet
Dec 17, 2008·Oecologia·Sybill JaschinskiUlrich Sommer
Feb 20, 2010·Oecologia·André Tavares Corrêa DiasFrank Berendse
Jul 10, 2010·Oecologia·Andrea SchmidtkeMarkus Fischer
Oct 22, 2010·Oecologia·W Stanley Harpole, Katharine N Suding
Feb 24, 2011·Oecologia·Agnes M L KarlsonRagnar Elmgren
Mar 29, 2011·Oecologia·Michael P Carey, David H Wahl
Aug 1, 2012·Oecologia·Stefanie SchabhüttlMaren Striebel
Oct 18, 2012·Oecologia·Joseph K Sigi Lang'atMark Huxham
Apr 2, 2013·Oecologia·Delbert L SmeeJames A Sanchez
Nov 7, 2008·The ISME Journal·Noha H Youssef, Mostafa S Elshahed
Jun 15, 2013·The ISME Journal·Muhammad SaleemAntonis Chatzinotas
Oct 11, 2012·Nature Communications·Dominique GravelNicolas Mouquet

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