Special Feature: Functional Diversity
Linking traits between plants and invertebrate herbivores to track functional effects of land-use changes
Article first published online: 3 JUN 2013
© 2013 International Association for Vegetation Science
Journal of Vegetation Science
Volume 24, Issue 5, pages 949–962, September 2013
How to Cite
Moretti, M., de Bello, F., Ibanez, S., Fontana, S., Pezzatti, G. B., Dziock, F., Rixen, C., Lavorel, S. (2013), Linking traits between plants and invertebrate herbivores to track functional effects of land-use changes. Journal of Vegetation Science, 24: 949–962. doi: 10.1111/jvs.12022
- Issue published online: 2 AUG 2013
- Article first published online: 3 JUN 2013
- Manuscript Accepted: 28 SEP 2012
- Manuscript Received: 6 APR 2012
- EraNet BiodivERsA. Grant Number: ANR-08-BDVA-008
- CWM ;
- Ecosystem functioning;
- Ecosystem services;
- Functional dissimilarity FD;
- Functional traits;
- Multitrophic trait cascade;
- Plant–herbivore interaction
Ecosystem functions and underlying services are strongly influenced by multitrophic relationships, with functional traits playing a central role in structuring them. Which traits and functional metrics mediate the impact of different types of land use on ecosystem function within and across trophic levels?
We studied the functional relationships between plants and grasshoppers in sub-alpine grasslands under different management regimes in the Central French Alps. We applied the theoretical multitrophic response–effect framework described by (Journal of Vegetation Science, 24, this issue) to identify key traits linking plants and grasshoppers to biomass production. The linkages between selected plant and grasshopper traits were analysed using community-weighted mean traits (CWM) and functional diversity (FD; Rao's quadratic diversity).
Uni- and multivariate models provided evidence about the relative importance of trait linkages within and across trophic levels. We showed that management affected both plant and grasshopper traits and that the interaction between them was linked to biomass production. While a number of CWM traits and FD were involved in the interaction, CWM of leaf dry matter content (LDMC) and grasshopper dry body mass (GMass) chiefly mediated the impact of management change on biomass production.
Our study suggests that both trait values of the most abundant species and functional trait variation within and across trophic levels in combination may best explain the impact of land-use changes on ecosystem function. To improve our mechanistic understanding across trophic levels, a better knowledge of response and effect traits remains a major goal, especially for animal ecologists, while a strong collaboration among disciplines is needed to bridge the existing gaps.