Special Feature: Functional Diversity
Effects of land-use changes on plant functional and taxonomic diversity along a productivity gradient in wet meadows
Article first published online: 2 AUG 2013
© 2012 International Association for Vegetation Science
Journal of Vegetation Science
Volume 24, Issue 5, pages 898–909, September 2013
How to Cite
Janeček, Š., de Bello, F., Horník, J., Bartoš, M., Černý, T., Doležal, J., Dvorský, M., Fajmon, K., Janečková, P., Jiráská, Š., Mudrák, O., Klimešová, J. (2013), Effects of land-use changes on plant functional and taxonomic diversity along a productivity gradient in wet meadows. Journal of Vegetation Science, 24: 898–909. doi: 10.1111/jvs.12012
- Issue published online: 2 AUG 2013
- Article first published online: 2 AUG 2013
- Manuscript Accepted: 7 OCT 2012
- Manuscript Received: 23 MAR 2012
- Grant Agency of the Czech Republic. Grant Numbers: GA 526/07/0808, GA 526/09/0963, GA P505/12/1296
- University of South Bohemia, České Budějovice. Grant Number: GAJU 138/2010/P
- Clonal index;
- Leaf dry matter content;
- Plant height;
- Plant traits;
- Seed mass;
- Specific leaf area
To what extent do changes in management (abandonment and fertilization) affect plant functional and taxonomic diversity in wet meadow communities? To what extent do the changes in functional and taxonomic diversity depend on site productivity?
Železné hory Mts., Czech Republic.
Experimental plots were established on 21 wet meadows differing in productivity and species composition. In each meadow, in 2007, four 1 × 1 m plots were established, representing a full factorial design with abandonment and fertilization as the factors. In each plot, the number of species present was recorded in 100 subplots (0.1 × 0.1 m) in the years 2007, 2009 and 2011. Different indicators of functional diversity (functional richness, functional evenness, and Rao′s quadratic entropy) were calculated using five functional traits (SLA, LDMC, seed mass, plant height and clonality). Both abundance-weighted and non-weighted diversity indices were calculated. Randomization tests (conducted with PERMANOVA) were used to assess the effect of site productivity and management on both α- and β-diversity components.
Meadows along the productivity gradient differed in functional and taxonomic diversity. Both abandonment and fertilization decreased taxonomic diversity. Whereas fertilization decreased functional richness and Rao′s quadratic entropy, abandonment decreased functional evenness. The changes in both taxonomic and functional diversity caused by abandonment and fertilization occurred faster in more productive meadows.
The increased dominance of tall species with abandonment and fertilization, followed by the loss of species and the decrease in various indicators of functional diversity, suggest that increased competition for light resulted in increased trait convergence among co-existing species. In addition, many processes occurring after abandonment and fertilization depend on meadow productivity. Results suggest that abundance- and non-abundance-weighted diversity indices give complementary insights on community structure. These results imply that changes are needed in current meadow management and conservation.