Effect of different management on the production and structure of biomass in the Mlýnský potok catchment (Lipensko).

The aim of the thesis is to compare the production and structure of biomass (the proportion of grasses, clovers and other plants) in selected scythed and pastured permanent grass areas in the Mlýnský potok (Mill stream) basin. The monitored area is situated on the right bank of Lipno dam in Pasečná land register, 784-820 meters above sea-level. There were established three permanent sampling points in the pastured as well as scythed area in Mlýnský potok basin. Four samples of biomass from the area of 1 sq m were collected in each of these sampling points. In 2012 the samplings were collected on 20th June and 11th September. The collected biomass was then divided into agrobotanical groups (grasses, clovers and other plants) and afterwards it was dried and weighed. In the concerned area, the production from the pastured growth was considerably higher than from the scythed one. Structure of biomass, i.e. the proportion of grasses, clovers and plants, was in both areas comparable, only clovers in the scythed area had greater rates dispersion