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Floods, landscape and people on the Morava/March River (on examples from the 17th up to 19th centuries)
Munzar, Jan ; Ondráček, Stanislav
In the natural conditions of central Europe, floods have been occurring at all times and we have to count on their occurrence in the future, too. None of the floods had the same behaviour and impact. All were unique and this is why the lessons learnt from historic flood cases are valuable for both the present time and the future. The analysis of the course of disastrous floods in the basins of Morava/March R. and Odra/Oder R. in July 1997 showed that the damage of properties and the high number of casualties were undoubtedly caused also by the loss of historic flood memory. Because our forefathers knew very well that floods are normal phenomenon and occur practically every year. The goal of this paper is to take our minds back to problems faced by inhabitants settled near the Morava River in connexion with floods and their impacts on examples from the period between the 17th-19th centuries.
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Revitalization of the Morava River vs. business plans
Halačka, Karel ; Mendel, Jan ; Papoušek, Ivo ; Vetešník, Lukáš
The course of the Morava River is an important supranational biocorridor with significant biological potential. This is attested also by results of recent ichthyological surveys. There is a plan of revitalization projects aimed at making migration barriers passable and also at repatriation of indigenous animal species. At the same time, there is a number of business plans focusing on the area, while their realization would severely restrain or even disallow the revitalization efforts. Therefore, a complex biological survey of the whole Morava River course should be performed first, and a detail project of naturalization of the floodplain, including the still existing fragments of original river channel, should be elaborated subsequently. Such project would then constitute a qualified basis for centrally assessed potential business plans.
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Potential of the restoration of the halophyte vegetation lower course of the Trkmanka river floodplain
Halas, Petr
One of the most important areas with halophyte vegetation in the Czech Republic represents lower course of the Trkmanka river floodplain. This vegetation is a small rest of the origin distribution. Plant species structure has changed in context of historical and recent management. Many plant species became extinct due to destruction of biotops, hydrological regime changes and leaving of extensive management too. The chance to survive of the halophyte plant species will exist due to specific feature of halomorphic soil and competitive advantage of halophyte plant species if management of the rare biotops is right.
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Succession alluvial biotopes after the flood in 1997 in the area of the river Bečva
Grohmanová, L. ; Lacina, Jan
After the floods in 1997 on the Bečva river there appeared an opportunity for observing dynamic fluvial succession development of plant communities. Here we come with the comparison of three selected research areas: Lhotka nad Bečvou, „Pod Břehy“, Choryně, „vyústění Milotického potoka“ and Rybáře near by Drahotuš known as „Rybáře“. Selected research area is located in Zlin and Olomouc region, in Přerov and Vsetín districts. On each selected research area we have chosen 10 meters wide transects for detail vegetation mapping. Thus we have obtained new scientific data which were used for comparison with the same research areas ten years ago and in times between. Main aim of this contribution is to compare and evaluate dynamic fluvial successions after 10 years and to continue with studied transects for future research in observing dynamic fluvial succession on the Bečva river. Analyzed research resulting data can be valuable material environmental for precautions.
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