Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIV
Written by Radoslava ZAHARIEVA, Petya ZAHARIEVA, Diana KIRIN
The study aims to conduct hydrobiological monitoring of the Kayaliika River (Maritsa River watershed) based on the biological quality element macrozoobenthos. The monitoring was performed following methodologies approved by the European Union and Bulgaria. Macrozoobenthos samples were collected in the autumn of 2024 from four locations (biotopes) along the Kayaliika River near the village of Ezerovo, Bodrovo, Varbitsa and Skobelevo. The number and taxonomic composition of the macrozoobenthos were determined, with the highest number of taxa found in the Kayaliika River biotope near the village of Skobelevo – 28 taxa, and the lowest – in the Kayaliika River biotope near the village of Varbitsa – 12 taxa. Basic indices for species diversity and abundance were calculated. The number of macrozoobenthos taxa by saprobity groups and sensitivity groups from the four biotopes of the studied river ecosystem was presented and compared. The results provide valuable insights into the ecological status of the Kayaliika River and contribute to regional water quality assessments.
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