Phytoplankton as a biological predictor in assessment of the ecological status of karstic lakes (case study – NP Plitvice lakes)

Žutinić, Petar (2014) Phytoplankton as a biological predictor in assessment of the ecological status of karstic lakes (case study – NP Plitvice lakes). Doctoral thesis, Faculty of Science > Department of Biology.

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Abstract

Despite their exceptional environmental, natural, cultural and economic significance, karstic barrage ecosystems are still poorly investigated. Phytoplankton is an important biological indicator of changes in the ecosystem and accounts for the majority of primary production in freshwater systems, therefore making it useful in assessing the ecological status of water bodies (in accordance with the Water Framework Directive, WFD). Phytoplankton community of Plitvice Lakes, a karstic barrage lake ecosystem, was investigated during a one year period on two vertical profiles (on Lakes Kozjak and Prošće) with the aim of defining the community with similar morphological and functional traits and achieving a better understanding on how the ecosystem is functioning. The research determined how abiotic and biotic factors affected the taxonomic composition of the phytoplankton community. Phytoplankton survival strategies based on the intensity of stress and distortion in the system were determinated. Using different descriptive morpho-functional classifications, the most applicable approach describing phytoplankton community of karstic barrage lakes was defined (in accordance with the WFD instructions), in order to investigate the possibility of using the same approach in determining the ecological status.

Item Type: Thesis (Doctoral thesis)
Keywords: karstic lakes, phytoplankton, community, survival strategies, morpho-functional classifications
Supervisor: Plenković-Moraj, Anđelka
Co-supervisor: Padisák, Judit
Date: 2014
Number of Pages: 143
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Grozdana Sirotic
Date Deposited: 22 Jul 2014 09:40
Last Modified: 22 Jul 2014 09:40
URI: http://digre.pmf.unizg.hr/id/eprint/2533

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