Different plant trait scaling in dry versus wet Central European meadows

Journal of Vegetation Science - Tập 23 Số 4 - Trang 709-720 - 2012
Francesco de Bello1,2, Štěpán Janeček2, Jan Lepš1,3, Jiří Doležal2, Jana Macková1, Vojtěch Lanta2,4, Jitka Klimešová2
1Department of Botany Faculty of Sciences University of South Bohemia Na Zlaté Stoce 1 CZ‐370 05 České Budějovice Czech Republic
2Institute of Botany Czech Academy of Sciences Dukelská 135 CZ‐379 82 Třeboň Czech Republic
3Institute of Entomology Biology Centre Czech Academy of Sciences CZ‐370 05 České Budějovice Czech Republic
4Section of Ecology University of Turku FIN‐20014 Turku Finland

Tóm tắt

AbstractQuestionTrait scaling relationships involve multiple trade‐offs and allometric constraints between the traits of co‐existing species. Alternative trait relationships, particularly between plant size and other traits, are expected in response to combinations of different biotic and abiotic filters. To what extent does the expected convergence in plant attributes to water shortage and disturbance produce different trait scaling relationships in dry vs wet meadows under various disturbance regimes?LocationsOne test meadow in South Bohemia and one in South Moravia (i.e. wet vs dry Central Europe meadows), Czech Republic.MethodsSelected species were sampled in mown and abandoned plots within each site. Several plant traits were measured to provide information on plant strategies related to growth, resource acquisition and carbon–water economy.ResultsTrait differentiation among co‐existing species was strong in both meadows, and generally stronger than differentiation caused by mowing and site effects. Different trait scaling relationships with plant height were observed across the meadows, particularly showing a more independent trait differentiation linked to water–carbon economy at the dry site. Mowing tended to reinforce the effect of water limitation on traits and on trait scaling. In contrast, mowing cessation tended to resemble the effect of humid conditions on trait relationships.ConclusionsThe results advocate incorporating trait scaling relationships between species into vegetation models and community assembly assessments, therefore accounting for processes of plant co‐existence along combined spectra of light, water and disturbance regimes. These gradients affect alternative life‐history strategies and possibly sustain different species co‐existence patterns based on different trait scaling. The results particularly advocate a convergence in traits and trait scaling relationships in response to the combination of disturbance and water limitation.

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Thông tin xuất bản

Journal of Vegetation Science

Tập 23 Số 4

709-720

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