Naslov
VERTIKALNA DISTRIBUCIJA PERIFITONA U UJEZERENOM DIJELU RIJEKE KRKE
(VERTICAL DISTRIBUTION OF PERIPHYTON IN LOTIC AREA OF RIVER KRKA)

Autori
Plenković-Moraj, Anđelka ; Gligora, Marija ; Kralj, Koraljka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Zbornik sažetaka 8. Hrvatskog biološkog kongresa / Besendorfer, Višnja ; Mitrikeski, Petar - Zagreb : Hrvatsko biološko društvo, 2003, 279-280

Skup
8. HRVATSKI BIOLOŠKI KONGRES

Mjesto i datum
Zagreb, Hrvatska, 27.09.2003. - 02.10.2003

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
perifiton; umjetni supstrati; vertikalna distribucija
(periphyton; artificial surfaces; vertical distribution)

Sažetak
The aim of this study was to determine rate of periphyton growing over artificial surfaces. Plexy slides were exposed for 30, 60, and 90 days on vertical profile (epilimnion, metalimnion and hypolimnion) of lower, lotic area of River Krka from July to September 1995. Besides qualitative and quantitative composition and abundance of algae on perpendicular (direct water flow) and parallel (upper and lower side) surfaces, some physic-chemical parameters were also researched. During research time 90 different species were observed. The most dominant group, Bacillariophiceae was well represented with species. Cyclotella radiosa (Grun.) Lemmer., Achnanthes affinis Grun., Cocconeis placentula Ehr. and Navicula minima Grun. that were present in all samples. Highest growth potential was observed after 60 days of exposition on upper side of horizontally placed surface in epilimnion. During the same exposition time, the lowest growth potential was noted on perpendicular surface in hypolimnion. Results show significant differences in abundance, number and composition of algae between growth surfaces and depths.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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