Oecologia

, Volume 175, Issue 4, pp 1337–1348 | Cite as

Intraspecific variability in functional traits matters: case study of Scots pine

  • Isabelle Laforest-Lapointe
  • Jordi Martínez-Vilalta
  • Javier Retana
Ecosystem ecology - Original research

Abstract

Although intraspecific trait variability is an important component of species ecological plasticity and niche breadth, its implications for community and functional ecology have not been thoroughly explored. We characterized the intraspecific functional trait variability of Scots pine (Pinus sylvestris) in Catalonia (NE Spain) in order to (1) compare it to the interspecific trait variability of trees in the same region, (2) explore the relationships among functional traits and the relationships between them and stand and climatic variables, and (3) study the role of functional trait variability as a determinant of radial growth. We considered five traits: wood density (WD), maximum tree height (Hmax), leaf nitrogen content (Nmass), specific leaf area (SLA), and leaf biomass-to-sapwood area ratio (BL:AS). A unique dataset was obtained from the Ecological and Forest Inventory of Catalonia (IEFC), including data from 406 plots. Intraspecific trait variation was substantial for all traits, with coefficients of variation ranging between 8 % for WD and 24 % for BL:AS. In some cases, correlations among functional traits differed from those reported across species (e.g., Hmax and WD were positively related, whereas SLA and Nmass were uncorrelated). Overall, our model accounted for 47 % of the spatial variability in Scots pine radial growth. Our study emphasizes the hierarchy of factors that determine intraspecific variations in functional traits in Scots pine and their strong association with spatial variability in radial growth. We claim that intraspecific trait variation is an important determinant of responses of plants to changes in climate and other environmental factors, and should be included in predictive models of vegetation dynamics.

Keywords

Forest structure Functional traits Growth Intraspecific variability Pinus sylvestris 

Supplementary material

442_2014_2967_MOESM1_ESM.doc (984 kb)
Supplementary material 1 (DOC 1004 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Isabelle Laforest-Lapointe
    • 1
  • Jordi Martínez-Vilalta
    • 1
    • 2
  • Javier Retana
    • 1
    • 2
  1. 1.CREAF, Centre for Ecological Research and Forestry ApplicationsAutonomous University of BarcelonaCerdanyola del Vallés, BellaterraSpain
  2. 2.Universitat Autònoma de BarcelonaCerdanyola del VallésSpain

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