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Phenotypic variability in native populations of Lythrum salicaria L. across geographical gradient: between- and within-population differences
Bastlová, D. ; Květ, Jan
Variability in growth characteristics was studied in 15 native Eurasian populations of L. salicaria across the N.-S. geographical gradient in a garden tub experiment. Plant height, total plant mass and its components (dry weight of shoots, roots, lateral branches, leaves and inflorescence) and the basal stem diameter, number of lateral branches and internodes were assessed at the end of 1st season. Most of the total variability in plant height, shoot dry weight, that of lateral branches, leaves and inflorescences, basal stem diameter, leaf area, specific leaf area, flowering time and number of primary lateral branches can be explained by differences in latitude of the location of the populations' origin. But the variability in root dry weight, number of roots and number of internodes is higher between and within the populations than between the geographical locations.
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To mow or not to mow
Dušek, J. ; Květ, Jan
The paper deal with management of Plants [Common reed] growing in the constructed wetlands. Authors advised moving of Common reed one per three years in October or November.
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Role of wetlands in cycles of energy, water, nutrients, carbon and heavy metals in landscape
Pokorný, Jan ; Květ, Jan
Basic values on solar energy income and its distribution in dry and wetlans are given. Production of differnt wetland plants and accumulation of nutrients, carbon, hevy metals in biomass, water sediments are given for floodplains, fishponds, bogs, and wet meadows. Examples of nutrient loads, water capacity, evapotranspiration values are discused in terms of sustainable mamagement of landscape.
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Long-term research in wetland of the Třeboň Basin Biosphere Reserve
Květ, Jan ; Straškrábová, Viera
The Třeboň basin belongs to most investigated areas of the Czech Republic. A great variety of ecological data enable to make long-term comparisons of the recent state of the ecosystem with those occuring some decades to ca. hinred years ago. Thanks to well-documented history of human impacts into natural relations, the historical aspect may also be utilized. This helps considersably to realize the long-term ecological research.
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The importance of the Třeboň Basin for International Wetland Research
Květ, Jan
The Třeboň Basin belongs to the wetland-richest regions of Central Europe: wetlands occupy at least 20 procent of the area of the Třeboň Basin Protected Landscape Area/Biosphere Reserve.Declaration of the Třeboň Basin and some adjacent areas as a BR 1977 a PLA 1979, and an area comprising several wetlands of international importance according to the Ramsar Convention 1991.
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