Naslov
Ekološka valorizacija Gornjogradskog jezera, Osijek s posebnim osvrtom na funkcionalnu ulogu smeđe hidre, Hydra oligactis (Pallas, 1776)
(Ecological valorisation of Gornjogradsko lake, Osijek, with a special emphasis on the functional role of brown hydra, Hydra oligactis (Pallas, 1776))

Autori
Krajina, Ivanka ; Bogut, Irella ; Merdić, Enrih ; Užarević, Zvonimir

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

Izvornik
11. Hrvatski biološki kongres : zbornik sažetaka / Jelaska, Sven D. ; Klobučar, Goran I.V. ; Šerić Jelaska, Lucija ; Leljak Levanić, Dunja ; Lukša, Žaklin - Zagreb : Hrvatsko biološko društvo, 2012, 102-103

Skup
11. Hrvatski biološki kongres

Mjesto i datum
Šibenik, Hrvatska, 16.09.2012. - 21.09.2012

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
ekološka valorizacija; eutrofikacija; fauna beskralježnjaka; Hydra oligactis; Myriophyllum spicatum; Gornjogradsko jezero u Osijeku
(ecological valorisation; eutrophication; invertebrate fauna; Hydra oligactis; Euroasian watermilfoil; Myriophyllum spicatum; Gornjogradsko Lake in Osijek)

Sažetak
Based on the analysis of limnological parameters during the spring and summer of 2010, and calculated trophic state indices, eutrophy with a tendency to hypertrophy was found for the small artificial lake Gornjogradsko inOsijek. Eight taxonomic groups of invertebrates were determined: brown hydra (Hydra oligactis), chironomid larvae (Chironomidae), beetles larvae (Coleoptera), other insect larvae, cladocerans (Cladocera), copepods (Copepoda) and snail juveniles (Gastropoda). The most abundant representative during the sampling period was brown hydra. They accounted for 30% of total invertebrate fauna while nematodes and chironomid larvae accounted for 25%. Cladocerans represented 12%. These four taxa groups were eudominant and euconstant. A statistically important positive correlation was found between brown hydra and air temperature. Pearson coefficient of correlation between length of rigid hornwort and hydra abundance as well as hornwort biomass and epiphyton biomass indicated a positive correlation but was not statistically significant. Significant negative correlation was found between predatory brown hydra and its favoured prey - cladocerans.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA