002731

Vol. 76 (3) 2024

ARTICLES

Abundance and Depth Distribution of Macroinvertebrates
in Krani, South-eastern Part of Lake Prespa, Republic
of North Macedonia

Biljana Budzakoska Gjoreska1*, Sasho Trajanovski1 & Sonja Trajanovska2

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1*Department of Benthic Fauna, Public Scientific Institution Hydrobiological Institute Ohrid, 50 Naum Ohridski Street, 6000 Ohrid, Republic of North Macedonia; biljanab@hio.edu.mk

2Department of Hydrobotany, Public Scientific Institution Hydrobiological Institute Ohrid, 50 Naum Ohridski Street, 6000 Ohrid, Republic of North Macedonia

https://doi.org/10.71424/azb76.3.002731

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Abstract
Results of the monitoring on the diversity and density of macrozoobenthos from the littoral zone of the locality Krani in Lake Prespa are presented. Three depths along three transects in this locality were sampled in spring and autumn of 2015. We recorded 25 taxa of macrozoobenthos belonging to eight classes: Turbellaria, Oligochaeta, Hirudinea, Gastropoda, Bivalvia, Amphipoda, Isopoda and Insecta. Seasonal changes (temperature, light availability, food availability and habitat conditions) as well as anthropogenic impacts affect macrozoobenthos communities. It was established that the density of communities is higher in autumn than in spring. Three species out of the 25 registered taxa were recorded with significantly higher densities: Dreissena carinata (14400 ind./m2), Gammarus triacanthus prespensis (4950 ind./m2) and Pyrgohydrobia prespaensis (4425 ind./m2). The results could contribute in obtaining a better understanding of the vertical and horizontal distribution, seasonal fluctuations in the population densities and the general state of the benthic fauna of this locality of high conservational importance.

Key words
benthic invertebrates, population density, ancient lake, Lake Prespa

How to Cite
Gjoreska B.B., Trajanovski S. & Trajanovska S. 2024. Abundance and Depth Distribution of Macroinvertebrates in Krani, South-eastern Part of Lake Prespa, Republic of North Macedonia. Acta zoologica bulgarica 76 (3) 393-399.

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