Celotělové (systémové) a lokalizované odpovědi rostliny na přítomnost kompetitorů
| Název práce v češtině: | Celotělové (systémové) a lokalizované odpovědi rostliny na přítomnost kompetitorů |
|---|---|
| Název v anglickém jazyce: | Whole-body and domain-specific responses of plants to the presence of competitive neighbours |
| Akademický rok vypsání: | 2022/2023 |
| Typ práce: | diplomová práce |
| Jazyk práce: | čeština |
| Ústav: | Katedra botaniky (31-120) |
| Vedoucí / školitel: | Mgr. Martin Weiser, Ph.D. |
| Řešitel: |
| Předběžná náplň práce |
| Sledování vlastností rostlinných orgánů a jejich variability v rámci jedince v závislosti na místě působení kompetičního tlaku. Cílem je zjistit, do jaké míry jsou odpovědi na přítomnost kompetitora prostorově generalizované, zda se míra generalizace liší mezi vlastnostmi a zda existují generalizované odpovědi, které rostlina aplikuje jak v případě nadzemní, tak v případě podzemní kompetice. |
| Předběžná náplň práce v anglickém jazyce |
| Plant leaf functional traits mediate plant survival and affect the environment. Yet they cannot be used to their full potential in predicting ecosystem properties from the species composition, because significant portion of the traits varies among species' individuals and, more importantly, also among individual leaves of a single individual. Nevertheless, research in the area of leaf traits variability within indiviuals has been mainly focused upon tree leaf traits, despite the important works of Carlos Herrera. The proposed project aims to assess the level of stability and spatial autocorrelation in wide range of leaf traits in a herbaceous plant under wide range of environmental contexts. The leaf traits will be assessed upon perennial, common, yet not ubiquitious, tall herb species, that naturally occurs in low-canopy, open semi-xeric grasslands (Veronica spicata). Currently, the habitat is being frequently colonized with tall grass species, so the model species faces new environments, and knowing the response in the leaf functional traits might shed some light upon plant strategies in facing environmental change. We will set the experiments to mimic the situations as close as possible, in order to discern the sources of the (likely) traits' variance We will describe the variability in the leaf traits along the vertical axis both in the growth chamber and in the experimental field. In the growth chamber, we will grow individual plants, and the variability along the vertical axis would likely stem from the leaves' age. In the experimental field, we will let the focal plants to develop in the context of tall and short (mown) grass species neighbours, with belowground competition in its full or attenuated, developing it into full factorial design of the experimental field study. We have the experimental field with competing grasses ready, we have cultivated the focal species material. We continuously discuss the project with Solveig Franziska Bucher, University of Jena. |