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Growth of the common reed (\kur{Phragmites australis}) in a selected constructed wetland used for wastewater treatment.
MOULISOVÁ, Lenka
The Bachelor{\crq}s thesis is a part of the Project of GACR 206/06/0058 Monitoring the heavy metals and the selected risk elements in a waste water cleaning process in artificial wetlands. This work is aimed at evaluating the growth characteristics of the common reed, Phragmites australis, in a constructed wetland used for wastewater treatment. A destructive method was used for sampling. The samples were taken in the inflow and the outflow parts of the vegetated bed in one vegetation season. The aboveground biomass was determined from six samples taken in the inflow and outflow part of the vegetated bed, respectively. The belowground biomass was determined from two samples taken in the inflow part and two samples taken in the outflow part. The mean total aboveground biomass (estimated in August 2007) was 1296 g.m-2 and 1105 g.m-2 in the inflow and outflow part, respectively. The mean live belowground biomass was 1729 g.m-2 and 2161 g.m-2 in the inflow and outflow part, respectively.
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Impact of river system structure on the genetic diversity of reed populations
Fuxová, Gabriela ; Fér, Tomáš (advisor) ; Kubátová, Barbora (referee)
Many plant species are closely related to river biotopes or to biotopes influenced by rivers. River systems create important linear corridors in ecosystems and directly or non-directly influence spatial spread of species in these environments. This offer many questions about species spread in this system. We can answer these questions by using molecular methods. Using 10 microsatellite (SSRs) primers, 202 individuals of Phragmites australis from 60 populations were analysed. Those analyses allowed reveal kinship of individuals, obtain information about spatial spread of populations and about spreading of common reed. Phragmites australis creates both - monoclonal and polyclonal - populations. Dependence of rate of clonality on environment was revealed. Populations from river banks are more monoclonal, populations from pond shores are more polyclonal. Populations are isolated. The highest percentage of variability was explained on among-population level. This is common for anemochoric species. Communication between populations is present, more on shorter distances. Evidence for vegetative spread was found on short distance. Generative spread is much more common. Long-distance spreading is mediated by generative diaspores - seeds. This spreading includes within-river spread, among-river spread and spreading...
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Impact of river system structure on the genetic diversity of reed populations
Fuxová, Gabriela ; Fér, Tomáš (advisor) ; Kubátová, Barbora (referee)
Many plant species are closely related to river biotopes or to biotopes influenced by rivers. River systems create important linear corridors in ecosystems and directly or non-directly influence spatial spread of species in these environments. This offer many questions about species spread in this system. We can answer these questions by using molecular methods. Using 10 microsatellite (SSRs) primers, 202 individuals of Phragmites australis from 60 populations were analysed. Those analyses allowed reveal kinship of individuals, obtain information about spatial spread of populations and about spreading of common reed. Phragmites australis creates both - monoclonal and polyclonal - populations. Dependence of rate of clonality on environment was revealed. Populations from river banks are more monoclonal, populations from pond shores are more polyclonal. Populations are isolated. The highest percentage of variability was explained on among-population level. This is common for anemochoric species. Communication between populations is present, more on shorter distances. Evidence for vegetative spread was found on short distance. Generative spread is much more common. Long-distance spreading is mediated by generative diaspores - seeds. This spreading includes within-river spread, among-river spread and spreading...
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