Naslov
Variability of the CSR functional types among Croatian populations of the invasive Erigeron annuus (L.) Pers.

Autori
Vuković, Nina ; Jelaska, Sven D.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
23rd International Workshop of the European Vegetation Survey - Book of Abstracts / Čarni, Andraž ; Juvan, Nina ; Ribeiro, Daniela - Ljubljana : Jovan Hadži Institute of Biology ZRC SAZU, Anton Melik Geographical Institute ZRC SAZU, 2014, 106-106

ISBN
978-961-254-693-9

Skup
23rd International Workshop of the European Vegetation Survey

Mjesto i datum
Ljubljana, Slovenija, 08.05.2014. - 12.05.2014

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
plant traits; phenotypic plasticity

Sažetak
According to the CSR system, plant species can be grouped into different functional types, based on their preference to environmental factors associated with stress and/or disturbance. Functional types are assigned to plants by measuring a certain set of traits ; hence plants of the same type should show similar expression of traits (apart for showing similar ecological behaviour) (Grime 2001). Many factors are believed to be of relevance for the invasive success of alien plants, and plasticity in the expression of traits is one of the frequently studied phenomena in that context (Davidson et al. 2011). We aimed to assess the CSR type of different populations of Erigeron annuus, searching for variations among populations, which would indicate variability in their ecological behaviour. We have surveyed 13 populations in Central Croatia, sampled five plants from each population and measured the required traits, using the methodology after Hodgson et al. (1999). For the calculations of the leaf traits, five leaves from each plant were used (in total 25 leaves per population). The populations were selected from anthropogenic habitats where E. annuus usually occurs. However, we attempted to select from as diverse microhabitats as possible, especially aiming for populations that contained somehow visually distinct individuals, to capture the effect of different environments on the same species. The calculations have shown that E. annuus is commonly a competitive-ruderal plant. The populations were grouped into two CSR types ; most populations were of CR type (eight populations), while others were similar, but displayed a more competitive strategy (C/CR type, five populations). Among these two groups, based on ANOVA, a significant difference in the leaf traits was observed, with the exception of fresh leaf weight. SLA and dry matter content have shown the greatest variability. In conclusion, observed variability of leaf traits was reflected on a minor difference in CSR type of studied populations. Davidson, A.M., Jennions, M. and Nicotra, A.B. 2011. Do invasive species show higher phenotypic plasticity than native species and, if so, is it adaptive? A meta analysis. Ecology Letters 14: 419-431. Hodgson, J.G., Wilson, P.J., Hunt , R., Grime, J.P. and Thompson, K. 1999. Allocating C-S-R plant functional types: a soft approach to a hard problem. Oikos 85: 282-296. Grime, J.P. 2001. Plant strategies, vegetation processes and ecosystem properties. 2nd ed. Wiley, Chichester.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA