Sonya Uzunova

Sonya Uzunova
Institute of Fishing Resources

About

10
Publications
2,038
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36
Citations
Citations since 2017
4 Research Items
17 Citations
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20172018201920202021202220230123456

Publications

Publications (10)
Technical Report
Full-text available
The purpose of this project is to collect data for the catches (main catches and bycatches) of marine organisms by different types of fishing activities of the Bulgarian fisheries' fleet. The main study is carried out in 2018-2019 and the following types of fishing vessels are observed: (1.) turbot fishery with gillnets; (2.) pelagic and bottom sp...
Article
Full-text available
Background: Recently, population genetic studies of Mediterranean marine species highlighted patterns of genetic divergence and phylogeographic breaks, due to the interplay between impacts of Pleistocene climate shifts and contemporary hydrographical barriers. These factors markedly shaped the distribution of marine organisms and their genetic make...
Article
Full-text available
The goals of the present study include: (i) evaluation of the marine ecosystem status in 2015 -2016 and (ii) estimation of the spatial distribution and abundance of the main commercially exploited shellfish resources (black mussel and veined rapa whelk) along the Bulgarian coast of the Black Sea. The results show considerable decline of the shellfi...
Article
Full-text available
The nektobenthos is of great importance for the ecosystem functioning and demersal fish existence, but is poorly studied along the Bulgarian Black Sea coast. For this reason, investigations of nektobenthos in Varna Bay were carried out during the period 2007-2008. Materials from the water layer 20 cm over the sea bottom were collected. The main gro...
Article
Full-text available
Preliminary study of hyperbenthos composition in Varna Bay (the Western Black Sea) was carried out in June, August and October 2007, and in June and October 2008. A total of 37 hyperbenthos and zooplankton taxa were established. The hyperbenthos consisted mainly of decapod's larvae (6), fish eggs and larvae (10) and 4 crustacean's groups, belonging...
Article
Full-text available
UZUNOVA, S., 2010. The zoobenthos of eelgrass populations from Sozopol Bay (Black Sea). Bulg. J. Agric. Sci., 16: 358-363 Seagrasses are marine flowering plants typically found on sandy or muddy substrata in the shallow coastal waters. They present à good biotope for associate flora and fauna. Two eelgrasses species are reported for Black Sea -Zost...
Article
Full-text available
The paper presents results of analysis of 96 macrozoobenthic samples, collected on a seasonal basis in Bourgas Bay and in open-sea areas off Cape Emine (Bulgarian Black Sea) in 1996 and 1998. In total 96 taxa were established, distributed in four groups: Polychaeta, Mollusca, Crustacea and "Diversa". The average density of populations was 1756 ind....
Article
Full-text available
2007-2009 се проведоха изследвания на макрозообентоса във Варненско-Белославската езерна система, с цел да се установи състоянието на екосистемата в постеутрофикационния период. Направените проучвания показват, че през лятото и есента на 2007 г. видовият състав, и количествените характеристики са най-високи. През 2008 г. изследваните параметри рязк...
Article
Full-text available
50 вида от Malacostraca бяха установени за горния сублиторал пред българския бряг на Черно море. Най-богата на видове е биоценозата на Zostera spp. -34, следвана от биоценозата на Mytilus galloprovincialis – 25, Cystoseira barbata – 21 вида и биоценозата на пясъчното дъно се оказа най-бедна (само18 вида). Ключови думи: Malacostraca, Crustacea, Zost...

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Projects

Projects (4)
Project
1. Determining the "hotspots" of white mussels accumulations off the Bulgarian coast by assessment of the stocks and biological characteristics of the species of the group of white mussels (Chamelea gallina, Donax, Anadara iaequivalvis, etc) and comparison with previous studies. 2. Enrichment of information on descriptors D 1 (Biodiversity) and D 3 (Sustainable stocks of species subject to industrial fishing) to the Marine Strategy Framework Directive (MSFD, 2008/56/EC) concerning the studied habitats - infra- and sublittoral biocenoses, with dominant white mussel species. 3. Proposals for regulatory measures - reduction of fishing effort, measures related to maritime spatial planning and marine protected areas and studies on good practices for conservation and recovery of white mussel stocks in different regions of the World Ocean.
Project
The project aims at data collection for the bycatch of marine organisms by different types of fishing activities of the Bulgarian fisheries' fleet. During 2018 - 2020 the following types of fishing vessels were observed: (1.) turbot fishing with gillnets; (2.) pelagic and bottom species fishing with pelagic trawl; (3.) Rapana fishing with beam trawl; (4.) pelagic and bottom species fishing with polyvalent active and passive gears. The collected data include total catch of the target species, composition and quantities of the bycatches of marine organisms. The dynamics of the main catches and bycatches quantities by months and seasons were estimated, as well as bycatch species composition, bycatch rate, size, sex and age structure.