National Repository of Grey Literature 6 records found  Search took 0.01 seconds. 
Landuse efects on the temperature regime of streams with focus on the habitat conditions for Margaritifera margaritifera
Skála, Miroslav ; Douda, Karel (advisor) ; Matasová, Klára (referee)
Landuse efects on the temperature regime of streams with focus on the habitat conditions for Margaritifera margaritifera Summary This bachelor thesis deals with the matter of the freshwater pearl mussel (Margaritifera margaritifera). It will describe the main factors affecting its reproduction and presence in the watercourse - the fresh pearl mussel is to be found among the endangered species and its presence and survival in a certain location depend primarily on the hosting fish which is the brown trout here in the Czech Republic. Generally, the main stress lays on the temperature and its influence on the ecology of the freshwater pearl mussel. This thesis contains a research part which describes the freshwater pearl mussel and impacts on it, and a practical part where you can find an assessment of the temperature and qualitative impact on growth and death of the freshwater pearl mussel during bioindications. The temperature influences all age stages of the freshwater pearl mussel. The temperature changes thanks to a variety of different aspects such as surrounding flora in the watercourse, atmospherical factors, anthropogenic activity or altitude. You will be able to find all these aspects along with a percentage of their potential effect on the freshwater pearl mussel in this thesis as well as the assessment of the average summer temperature and its possible impact on any specimen of any stage. The thesis is also based on the impact of surroundings on the freshwater pearl mussel which are discovered during bioindications that are also described here and have been partially used in the appraisal. The practical part of the thesis is focused on the growth and death of the species in the bioindication in five profiles of the watercourse. The third part of the practical thesis is about locations that show surroundings and representation stated components. The reason I included this part is mostly for illustrative purposes which serve to expound the matter to the reader. The used data of components in the locations are from 2012.

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