Global leaf trait relationships: Mass, area, and the leaf economics spectrum

Jeanne L D Osnas, Jeremy W. Lichstein, Peter B. Reich, Stephen Wilson Pacala

Research output: Contribution to journalArticle

200 Scopus citations

Abstract

The leaf economics spectrum (LES) describes multivariate correlations that constrain leaf traits of plant species primarily to a single axis of variation if data are normalized by leaf mass. We show that these traits are approximately distributed proportional to leaf area instead of mass, as expected for a light- and carbon dioxide - collecting organ. Much of the structure in the mass-normalized LES results from normalizing area-proportional traits by mass. Mass normalization induces strong correlations among area-proportional traits because of large variation among species in leaf mass per area (LMA). The high LMA variance likely reflects its functional relationship with leaf life span. A LES that is independent of mass- or area-normalization and LMA reveals physiological relationships that are inconsistent with those in global vegetation models designed to address climate change.

Original languageEnglish (US)
Pages (from-to)741-744
Number of pages4
JournalScience
Volume340
Issue number6133
DOIs
StatePublished - Jan 1 2013

All Science Journal Classification (ASJC) codes

  • General

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