The influence of functional diversity and composition on ecosystem processes

David Tilman, Johannes Knops, David Wedin, Peter Reich, Mark Ritchie, Evan Siemann

Research output: Contribution to journalArticlepeer-review

2357 Scopus citations


Humans are modifying both the identities and numbers of species in ecosystems, but the impacts of such changes on ecosystem processes are controversial. Plant species diversity, functional diversity, and functional composition were experimentally varied in grassland plots. Each factor by itself had significant effects on many ecosystem processes, but functional composition and functional diversity were the principal factors explaining plant productivity, plant percent nitrogen, plant total nitrogen, and light penetration. Thus, habitat modifications and management practices that change functional diversity and functional composition are likely to have large impacts on ecosystem processes.

Original languageEnglish (US)
Pages (from-to)1300-1302
Number of pages3
Issue number5330
StatePublished - Aug 29 1997
Externally publishedYes

ASJC Scopus subject areas

  • General


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