Assessing the generality of global leaf trait relationships

Ian J. Wright, Peter B. Reich, Johannes H C Cornelissen, Daniel S. Falster, Eric Garnier, Kouki Hikosaka, Byron B. Lamont, William Lee, Jacek Oleksyn, Noriyuki Osada, Hendrik Poorter, Rafael Villar, David I. Warton, Mark Westoby

    Research output: Contribution to journalArticlepeer-review

    595 Citations (Scopus)

    Abstract

    • Global-scale quantification of relationships between plant traits gives insight into the evolution of the world's vegetation, and is crucial for parameterizing vegetation-climate models. • A database was compiled, comprising data for hundreds to thousands of species for the core 'leaf economics' traits leaf lifespan, leaf mass per area, photosynthetic capacity, dark respiration, and leaf nitrogen and phosphorus concentrations, as well as leaf potassium, photosynthetic N-use efficiency (PNUE), and leaf N:P ratio. • While mean trait values differed between plant functional types, the range found within groups was often larger than differences among them. Future vegetation-climate models could incorporate this knowledge. • The core leaf traits were intercorrelated, both globally and within plant functional types, forming a 'leaf economics spectrum'. While these relationships are very general, they are not universal, as significant heterogeneity exists between relationships fitted to individual sites. Much, but not all, heterogeneity can be explained by variation in sample size alone. PNUE can also be considered as part of this trait spectrum, whereas leaf K and N:P ratios are only loosely related.

    Original languageEnglish
    Pages (from-to)485-496
    Number of pages12
    JournalNew Phytologist
    Volume166
    Issue number2
    DOIs
    Publication statusPublished - May 2005

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