Ecological Potential Assessment of Sava Lake Based on Fish Community Composition: Preliminary Results

Branislav Mićković1, Miroslav Nikčević1, Tomislav Grozdić1, Milica Pucar1, Aleksandar Hegediš1 and Zoran Gačić1

 

 

1 Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, Belgrade, Serbia; E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

 

 

 

Abstract

The fish community of the Sava Lake is comprised of 20 species from 19 genera belonging to 8 families. Based on the fish community composition, selected metrics and evaluation criteria, a preliminary assessment of the fish community was conducted. An evaluated assessment score indicated that the fish assemblage can be described as a community of fair condition. Since fish assemblages reflect the overall integrity and environmental quality of aquatic ecosystems the evaluated score indicates fair ecological potential of the Sava Lake reservoir.

Keywords: Sava Lake reservoir, fish community, assessment, ecological condition.

 

 

Introduction

 

The Sava Lake is the largest and most important reservoir in the Belgrade area and is used for recreation and tourism purposes. During the summer season more than 100,000 people per day visit the reservoir. Because of that, its physico-chemical characteristics are regularly monitored by city authorized institutions (Ilić et al. 2013). Since it was created, a number of studies concerning water quality and ecological status have been conducted (Čomić et al., 2003), using its physico-chemical and biota characteristics. However, ichthyofauna of the reservoir was completely omitted in these studies. 

The Ministry of Energy, Development and Environmental Protection issued the Regulation on the parameters of the ecological and chemical status of surface waters and the parameters of chemical and quantitative status of groundwater (Official Gazette of the Republic of Serbia, 74/2011). Reservoirs are categorized as significantly modified water bodies and in the document physico-chemical and biological quality elements and their criteria for ecological potential assessment are determined. Fish fauna is not included within the biological quality elements. However, in Europe, fish are accepted as one of the key elements used to describe the ecological status of aquatic ecosystems (Noble et al. 2007; Launois et al. 2011). In the present study we made an effort to assess the ecological potential of the Sava Lake based on its fish community composition.