Affiliation:
1. Institute of Oceanology "Fridtjof Nansen", Bulgarian Academy of Science
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.
Reference5 articles.
1. [1] Georgiev Z. Species composition of the ichthyofauna of the Bulgarian Black Sea lakes. Proceedings of the Research Institute of Fisheries and Oceanology � Varna, Vol. VIII, pp. 211 � 227, 1967.
2. [2] Karapetkova, M., M. Zhivkov. The fish in Bulgaria. Gaia Libris, Sofia, 92 p., 2006.
3. [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.
[3] Chugunova, N. Guidance for studying the age and growth of fish. ANSSR, Moscow, 156 p, 1959.
4. [4] Act � �-4/14 September 2012
5. [5] NATURA 2000 �Mapping of conservation status and habitats - Phase 1� - http://natura2000.moew.government.bg/Home/Map
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