engleski

Taxonomic composition and seasonal distribution of microphytoplankton in the Krka river estuary

Microphytoplankton taxonomic composition and cell density distribution were investigated at three representative stations along the highly stratified Krka river estuary on the eastern Adriatic coast. Samples were collected at approximately monthly intervals from March 1998 to April 1989. One hundred thirty six taxa were determined by light microscopy: 108 marine species (1 chrysophyte, 5 prymnesiophytes, 55 diatoms, 1 euglenophyte, 46 dinoflagellates) and 28 freshwater species (1 chrysophyte, 21 diatoms, 1 dinoflagellate, 3 chrysophytes, 2 cyanophytes). The seasonal distribution of microphytoplankton cell densitie is influenced by the freshwater inflow through the Krka River and the ecological properties of the karstic salt-wedge-stratified estuary. Anthropogenic influence is notable in the lower reach of the estuary, around Šibenik.

Stratified estuary; phytoplankton; taxonomy; distribution; Adriatic sea

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