engleski

Krka River (Croatia): Case study of bryozoan settlement from source to estuary.

Krka River, a karstic river in Croatia’s Dalmatia region, has a length of 72 km and is famous for its seven travertine waterfalls of a total drop of 242 metres. The source of the Krka River is at the base of the Dinaric Mountains, 3.5 kilometres northeast of Knin and it flows into the Adriatic Sea at Šibenik. The length of the freshwater section is 49 km and the brackish part is 23 km. In September 2008 twenty-five sampling sites located between N 44°52.429', E 15°36.022' and N 43˚49.121' , E 15˚56.074' were investigated for bryozoan occurrence combined with recording of environmental parameters. The specific situation with travertine sedimentation as well as heavy algae growth hampers colony settlement on the substrates. The species list contains phylactolaemate (Cristatella mucedo, Fredericella sultana, Plumatella emarginata, P. fruticosa and P. repens) and gymnolaemate (Paludicella articulata and Conopeum seurati) taxa. P. repens was the most abundant bryozoan, followed by P. emarginata. C. seurati in the Krka River estuary represents the first record of this species along the eastern (Croatian) coast of the Adriatic Sea.

Bryozoa; Krka River; Croatia

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