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INFLUENCE OF THE ANTHROPOGENIC PRESSURE ON VARNA AND BELOSLAV LAKES AND THEIR ICHTHYOFAUNA

Radoslava Bekova, Bogdan Prodanov, Todor Lambev

First published: 2022-11-15https://doi.org/10.5593/sgem2022/5.1/s20.032View metrics

Abstract

The Varna and Beloslav lakes are the most strongly anthropogenized water bodies along the Bulgarian coast. At present, the lakes are again subject to deepening of the navigable channel, which significantly changes the quality of the habitats. An ecosystem approach was used to assess the status of the populations of fish species from the Varna-Beloslav Lake Complex. The paper's main purpose is to provide up-to-date information on the ichthyofauna of the largest northern Bulgarian Black sea brackish water bodies - Varna and Beloslav Lakes, the influence of the anthropogenic factor and its consequences.. The article includes data from mass kill fish and changes in physicochemical parameters in the period 2019 - 2021, compared to the previous periods, and identifies the main species affected by anthropogenic pressure. The data show that the mass death of fish includes small age groups and size classes. The anthropogenic pressure analysis shows that many fish species inhabiting the two lakes have lost their natural habitats.

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Title
INFLUENCE OF THE ANTHROPOGENIC PRESSURE ON VARNA AND BELOSLAV LAKES AND THEIR ICHTHYOFAUNA
Authors
Radoslava Bekova, Bogdan Prodanov, Todor Lambev
Proceedings
SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022
Publisher
STEF92 Technology
Year
2022
Pages
249-256
SWS Citekey
Bekova202220249256
ISSN
1314-2704
ISBN
978-619-7603-46-0
Language
en
Publication type
Conference Paper
Proceedings contents
Open official contents
Keywords
anthropogenic pressuremass kill fishbathymetryVarna LakeBeloslav LakeNorthern Bulgarian Black Sea coastal sector
References6

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  2. Karapetkova, M., M. Zhivkov. The fish in Bulgaria. Gaia Libris, Sofia, 92 p., 2006.

  3. Lambev, T., Prodanov, B., Dimitrov, L., Kotsev, I.. Digital terrain model of the Varna and Beloslav Lakes, North Bulgarian Black Sea Coast. In Eighth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2020), Vol. 11524, pp. 740-747, 2020.

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    View DOICrossrefGoogle ScholarWeb of ScienceScopusOpenCitations

  6. NATURA 2000 �Mapping of conservation status and habitats - Phase 1� - http://natura2000.moew.government.bg/Home/Map

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