@article {1665,
	title = {Interpreting the {\textquoteright}selection effect{\textquoteright} of biodiversity on ecosystem function},
	journal = {Ecology Letters},
	volume = {8},
	year = {2005},
	pages = {846-856},
	abstract = {Experimental ecosystems often function differently than expected under the null hypothesis that intra- and interspecific interactions are identical. Recent theory attributes this to the {\textquoteleft}selection effect{\textquoteright} (dominance by species with particular traits), and the {\textquoteleft}complementarity effect{\textquoteright} (niche differentiation and/or facilitative interactions). Using the Price Equation, I show that the {\textquoteleft}selection effect{\textquoteright} only partially reflects dominance by species with particular traits at the expense of other species, and therefore is only partially analogous to natural selection. I then derive a new, tripartite partition of the difference between observed and expected ecosystem function. The {\textquoteleft}dominance effect{\textquoteright} is analogous to natural selection. {\textquoteleft}Trait-independent complementarity{\textquoteright} occurs when species function better than expected, independent of their traits and not at the expense of other species. {\textquoteleft}Trait-dependent complementarity{\textquoteright} occurs when species with particular traits function better than expected, but not at the expense of other species. I illustrate the application of this new partition using experimental data. },
	keywords = {Additive partition, biodiversity, complementarity effect, ecosystem function, natural selection, Price Equation, selection effect, tripartite partition},
	author = {Fox, Jeremy W.}
}
