Venation networks and the origin of the leaf economics spectrum

Benjamin Blonder, Cyrille Violle, Lisa Patrick Bentley, Brian J. Enquist

Research output: Contribution to journalArticle

128 Citations (Scopus)

Abstract

Ecology Letters (2011) 14: 91-100 The leaf economics spectrum describes biome-invariant scaling functions for leaf functional traits that relate to global primary productivity and nutrient cycling. Here, we develop a comprehensive framework for the origin of this leaf economics spectrum based on venation-mediated economic strategies. We define a standardized set of traits - density, distance and loopiness - that provides a common language for the study of venation. We develop a novel quantitative model that uses these venation traits to model leaf-level physiology, and show that selection to optimize the venation network predicts the mean global trait-trait scaling relationships across 2548 species. Furthermore, using empirical venation data for 25 plant species, we test our model by predicting four key leaf functional traits related to leaf economics: net carbon assimilation rate, life span, leaf mass per area ratio and nitrogen content. Together, these results indicate that selection on venation geometry is a fundamental basis for understanding the diversity of leaf form and function, and the carbon balance of leaves. The model and associated predictions have broad implications for integrating venation network geometry with pattern and process in ecophysiology, ecology and palaeobotany.

Original languageEnglish (US)
Pages (from-to)91-100
Number of pages10
JournalEcology Letters
Volume14
Issue number2
DOIs
StatePublished - Feb 1 2011
Externally publishedYes

Fingerprint

economics
leaves
paleobotany
ecology
geometry
ecophysiology
carbon balance
biome
nutrient cycling
model test
nitrogen content
biogeochemical cycles
physiology
primary productivity
productivity
prediction
ecosystems
carbon
nitrogen
testing

Keywords

  • Functional trait
  • Leaf life span
  • Leaf nitrogen content
  • LMA
  • Loopiness
  • Photosynthesis
  • Physiological tradeoff
  • Vein density
  • Vein distance
  • Venation network

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

Cite this

Venation networks and the origin of the leaf economics spectrum. / Blonder, Benjamin; Violle, Cyrille; Bentley, Lisa Patrick; Enquist, Brian J.

In: Ecology Letters, Vol. 14, No. 2, 01.02.2011, p. 91-100.

Research output: Contribution to journalArticle

Blonder, Benjamin ; Violle, Cyrille ; Bentley, Lisa Patrick ; Enquist, Brian J. / Venation networks and the origin of the leaf economics spectrum. In: Ecology Letters. 2011 ; Vol. 14, No. 2. pp. 91-100.
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