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Article

Invasive Alien Species of Benthic Macroinvertebrates and Fish in the Bulgarian Sector of the Danube River—Results of the Joint Danube Survey 4 (JDS4)

1
Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences (IBER-BAS), 1 Tsar Osvoboditel Blvd., 1000 Sofia, Bulgaria
2
Biological Faculty, Sofia University ‘St. Kliment Ohridski’, 8 Dragan Tsankov Blvd., 1164 Sofia, Bulgaria
3
National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd., 1000 Sofia, Bulgaria
4
Biological Faculty, Plovdiv University ‘Paisii Hilendarski’, 2 Todor Samohodov Street, 4000 Plovdiv, Bulgaria
5
Institute of Vertebrate Biology, Czech Academy of Sciences, Květná 8, 603 65 Brno, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editors: Lyudmila Kamburska, Agnese Marchini and Hugh MacIsaac
Water 2022, 14(15), 2299; https://doi.org/10.3390/w14152299
Received: 23 June 2022 / Revised: 17 July 2022 / Accepted: 18 July 2022 / Published: 24 July 2022
The aim of this study was to assess the status of aquatic invasive alien species (IAS) in the shoreline zone of the Bulgarian sector of the Danube River, Danube tributaries, and adjacent standing water bodies in the frame of the Joint Danube Survey 4 (JDS4). Seven benthic macroinvertebrates and seven fish IAS were identified. The crayfish Faxonius limosus was frequently found and abundant in the tributaries. The mussels Corbicula fluminea, Dreissena rostriformis bugensis, and Sinanodonta woodiana dominated in the Danube River and the middle and lower reaches of the tributaries, while the fish Carassius gibelio, Perccottus glenii, and Lepomis gibbosus were most abundant in the standing water bodies. The integrated biocontamination estimated by taxonomic groups (crayfish, molluscs, and fish), sampling methods, and type of water bodies ranged from moderate in the shoreline zone of the Danube River, through moderate to high in the canals and lakes, to severe in the Danube tributaries and the reservoirs. The results demonstrate the importance of IAS in the assessment of the ecological status/potential of the water bodies in the DRB. The comprehensive evaluation of the aquatic IAS pressure will provide valuable information and support for the implementation of the national and EU IAS and water policies in the DRB. View Full-Text
Keywords: invasive alien species (IAS) monitoring; aquatic IAS; biocontamination; ecological status; Danube River Basin invasive alien species (IAS) monitoring; aquatic IAS; biocontamination; ecological status; Danube River Basin
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MDPI and ACS Style

Trichkova, T.; Todorov, M.; Kenderov, M.; Hubenov, Z.; Botev, I.; Stefanov, T.; Georgiev, D.; Jurajda, P. Invasive Alien Species of Benthic Macroinvertebrates and Fish in the Bulgarian Sector of the Danube River—Results of the Joint Danube Survey 4 (JDS4). Water 2022, 14, 2299. https://doi.org/10.3390/w14152299

AMA Style

Trichkova T, Todorov M, Kenderov M, Hubenov Z, Botev I, Stefanov T, Georgiev D, Jurajda P. Invasive Alien Species of Benthic Macroinvertebrates and Fish in the Bulgarian Sector of the Danube River—Results of the Joint Danube Survey 4 (JDS4). Water. 2022; 14(15):2299. https://doi.org/10.3390/w14152299

Chicago/Turabian Style

Trichkova, Teodora, Milcho Todorov, Marian Kenderov, Zdravko Hubenov, Ivan Botev, Tihomir Stefanov, Dilian Georgiev, and Pavel Jurajda. 2022. "Invasive Alien Species of Benthic Macroinvertebrates and Fish in the Bulgarian Sector of the Danube River—Results of the Joint Danube Survey 4 (JDS4)" Water 14, no. 15: 2299. https://doi.org/10.3390/w14152299

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