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Macrophytes of the river Ljubljanica

Simona Trček (2013) Macrophytes of the river Ljubljanica. Diploma thesis.

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    Abstract

    Macrophytes are plants adapted to life in the aquatic environment. In the river Ljubljanica macrophytes develop the greatest biomass in summer and autumn, when light and nutrients are abundant. The river Ljubljanica has a slow surface flow, with gentle slope. The river Ljubljanica frequently floods its surroundings. Water level fluctuations effect the life cycle of macrophytes. The aim of present work was to determine the distribution, frequency and abundance of macrophytes in the River Ljubljanica and asses habitat parameters of aquatic environment. With the help of the boat and on foot, we examined ten randomly selected reaches of the river Ljubljanica from its source in Močilnik to the city of Ljubljana. We assessed the condition of the wider aquatic environment with the use of the RCE method (Riparian, Channel and Environmental Inventory). We surveyed the presence of macrophytes, determined their growth form and evaluated the relative abundance by using five degree estimation scale. We investigated the relation between frequency and distribution of macrophytes influence was related to environmental properties of riparian zone and stream. The result showed that diversity and frequency of macrophytes changes downstream. The highest diversity is in the middle part, where the river is flowing slowly through the agricultural land. Macrophytes were the most commonly occurring in reaches with no woody riparian vegetation and with fine substrate. Wider environmental assessment classified the river Ljubljanica into II. to IV. RCE quality class.

    Item Type: Thesis (Diploma thesis)
    Keywords: macrophytes, streams, wide environmental assessment, the river Ljubljanica
    Number of Pages: 25
    Language of Content: Slovenian
    Mentor / Comentors:
    Mentor / ComentorsIDFunction
    izr. prof. dr. Alenka GaberščikMentor
    Link to COBISS: http://www.cobiss.si/scripts/cobiss?command=search&base=50126&select=(ID=9813065)
    Institution: University of Ljubljana
    Department: Faculty of Education
    Item ID: 1875
    Date Deposited: 14 Oct 2013 07:15
    Last Modified: 12 Nov 2015 15:16
    URI: http://pefprints.pef.uni-lj.si/id/eprint/1875

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