Prvi nalaz vrste Cyclops bohater Kozminski (Copepoda, Cyclopoida) u Hrvatskoj i na Balkanskom poluotoku

The species of freshwater Cyclopoida Cyclops bohater Kozminski 1933 was recorded during collection of zooplankton in one of the three Čingi-Lingi Lakes in August and September 2004. This is the first record for the Croatian fauna and also for the Balkan Peninsula. The Čingi-Lingi Lake is a gravel pit in the Podravina area of NW Croatia.Prilikom uzorkovanja zooplanktona u jednom od tri jezera Čingi-Lingi u kolovozu i rujnu 2004. godine zabilježena je vrsta slatkovodnih Cyclopoida Cyclops bohater Kozminski 1933. Ovo je prvi nalaz za hrvatsku faunu, a i za Balkanski poluotok. Jezero Čingi-Lingi je šljunčara u SZ dijelu Hrvatske u Podravini

Plankton Community Succession in Artificial Systems Subjected to Cyanobacterial Blooms Removal using Chitosan-Modified Soils

Using artificial systems to simulate natural lake environments with cyanobacterial blooms, we investigated plankton community succession by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) fingerprinting and morphological method. With this approach, we explored potential ecological effects of a newly developed cyanobacterial blooms removal method using chitosan-modified soils. Results of PCR-DGGE and morphological identification showed that plankton communities in the four test systems were nearly identical at the beginning of the experiment. After applying the newly developed and standard removal methods, there was a shift in community composition, but neither chemical conditions nor plankton succession were significantly affected by the cyanobacteria removal process. The planted Vallisneria natans successfully recovered after cyanobacteria removal, whereas that in the box without removal process did not. Additionally, canonical correspondence analysis indicated that other than for zooplankton abundance, total phosphorus was the most important environmental predictor of planktonic composition. The present study and others suggest that dealing with cyanobacteria removal using chitosan-modified soils can play an important role in controlling cyanobacterial blooms in eutrophicated freshwater systems