Publications by authors named "Theofilos Vanikiotis"
Two deciduous forest ecosystems, one dominated by and a mixed one with and , were monitored from an ecophysiological perspective during a five-year period, in order to assess seasonal fluctuations, establish links between phenology and ecophysiology, and reveal climatic controls. Field measurements of leaf area index (LAI), chlorophyll content, leaf specific mass (LSM), water potential (Ψ) and leaf photosynthesis (Aleaf) were performed approximately on a monthly basis. LAI, chlorophylls and LSM fluctuations followed a recurrent pattern yearly, with increasing values during spring leaf burst and expansion, relatively stable values during summer and decreasing values during autumn senescence.
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- The study investigates how self-fertilization and genetic traits (like polyploidy) affect the competitive ability and fitness of different Capsella species, with a focus on the differences between selfers and outcrossers.
- In outdoor experiments, outcrossing species showed better performance and fitness compared to self-fertilizing species, though polyploid selfers did not significantly outperform diploid selfers in terms of survival and reproduction.
- Controlled experiments reinforced these findings, demonstrating that outcrossers had a competitive edge and were less impacted by competition, while polyploid selfers showed more resilience in competition than diploid selfers.