STRUCTURE AND ABOVEGROUND PRODUCTION IN A SELECTED MONODOMINANT STAND OF A EUTROPHIC WET MEADOW

Anotation The bachelor thesis is part of the project of Ministry of Environment of the Czech Republic entitled CzechCarbo, which aims at assessing the carbon budget and cycle in the main types of ecosystems in the Czech Republic. This thesis is focused on the production of aboveground biomass and leaf area ratio in Carex acuta, which dominates the unmanaged and permanently flooded part of the Wet Meadows. The seasonal dynamics of aboveground plant production was followed using a series of 8 destructive harvests during the vegetation season., each in 8 replicates. In addition, a mid-summer harvest was accomplished in 24 replicates. The ighest value of live biomass of C. acuta was 244,12 g.m-2. The highest value of total aboveground biomass, which is close to the value of annual aboveground net production, was 352 g.m-2. The highest productivity of C. acuta, found on 5th May, was 6,24 g.m-2.day-1. The highest value of specific leaf area, 188 cm2.g-1 , was found on 29th May. The maximum leaf area ratio was 112 cm2.g-1 on 15th June. The highest leaf area index 2,51 m2.m-2 was found on 18th July. The results gained in 2006 are discussed with results of previous research focused on the biomass and production of C. acuta in the Wet Meadows