Zhodnocení trendu vývoje úlovků lososovitých ryb a lipana podhorního ve vybraných pstruhových revírech řeky Svitavy

Bachelor's work is targeted on factors affecting number of fish society on trout fishing areas, mainly of salmonids and grayling. Further more work is targeted on evaluation of anual catches of fish listed below on trout areas Svitava 3,4 and 5 in last 15 years. This results will be compared to fishing pressure on monitored areas with level of releasing of fis listed below. For evaluation of catches, fishing pressure and level of released fish was used evidence of trout kinds fish areas MRS in Brno. Results are showing, that the largem number of catches in last 15 years are in Svitava 3 area, which i also under the biggest fishing pressure. On the contrary the most fish released were in area Svitava 5. Enviromental factors in Svitava river are distictly better than in 1989. In this improvement are involved many closes of troubled facilities and also wastewater treatment plant