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Cyanobacteria of the karstic springs in Herzegovina (Bosnia and Herzegovina)

Karst occupies 50% of the total surface area of Bosnia and Herzegovina and it is of a great value for the country. Algae of karstic springs were not sufficiently investigated in Bosnia and Herzegovina. Most of the microphyte populations in karstic springs belong to the periphyton (litophyton and epiphyton). The aim was to investigate the springs periphytic Cyanobacteria in rivers of Buna (altitude 54 m, N 43o15'25.4'' / EO 17o54'15.1''), Bunica (altitude 52 m, N 43o13'31.1'' / EO 17o53'9.3'') and Radobolja (altitude 112 m, N 43o 21'16.9'' / EO 17o45'34.7'') – all three of them located near the city of Mostar in Herzegovina. Abiotic environmental factors were investigated at the same time. In total, 43 taxa of Cyanobacteria were identified in all springs investigated (in Bunica 29, Buna 24 and 17 in Radobolja). Out of 43 total taxa, eight taxa (19%) were found exclusively in Bunica spring ; four (9%) were found only in Buna spring, and seven (16%) just in Radobolja spring. Only seven taxa (16%) were common at all three springs. Genera Phormidium (11) and Plectonema (4) had the highest number of taxa. This study found that oligosaprobic zone indicators were prevailed among Cyanobacteria.

Cyanobacteria; karstic springs; Herzegovina; Bosnia and Herzegovina

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