Naslov
Raznolikost mikrofitskih zajednica u sedimentu Dunava i Sakadaškog jezera
(Diversity of sediment-associated microphytes in the Danube River and Lake Sakadaš)

Autori
Bek, Nikolina ; Žuna Pfeiffer, Tanja ; Špoljarić Maronić, Dubravka ; Stević, Filip ; Kezerle, Antonija

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

Izvornik
Book of abstracts of the 7th Symposium with international participation Kopački rit : past, present, future 2018 / Ozimec, Siniša ; Bogut, Irella ; Rožac, Vlatko ; Stević, Filip ; Popović, Željko ; Bolšec, Boris ; Baković, Adrijana ; Vereš, Marija - Kopačevo : Javna ustanova "Park prirode Kopački rit", 2018, 18-19

Skup
7. simpozij s međunarodnim sudjelovanjem: Kopački rit - jučer, danas, sutra = 7th Symposium with International Participation: Kopački rit - past, present, future

Mjesto i datum
Kopačevo, Hrvatska, 27.09.2018. - 28.09.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
Alge ; Cijanobakterije ; Epipelon ; Fitobentos ; Kopački rit
(Algae ; Cyanobacteria ; Epipelon ; Phytobenthos ; Kopački Rit)

Sažetak
Microphytes (algae and cyanobacteria) in the sediment of aquatic biotopes greatly influence its stabilization capacity, regulate nutrient cycling (benthic-pelagic) and primary production. Moreover, they represent one of the main quality elements for the assessment of the ecological status of aquatic ecosystems according to the European regulation. The research on sediment-associated microphytes was conducted in the Danube River and Lake Sakadaš in autumn of 2016. Due to the low Danube water level (0, 71-2, 54 m) different ecological conditions were established in the two investigated biotopes. Higher concentrations of nutrients (total nitrogen: 3, 0731 mg/L ; total phosphorus: 0, 4697 mg/L ; nitrites: 0, 0107 mgN/L) and surface water chlorophyll concentrations, as well as a greater amount of sediment inorganic and organic matter were found in Lake Sakadaš. On the contrary, higher water nitrate concentration (1, 372 mgN/L) and higher sediment chlorophyll content (Chl-as: 9, 64±1, 34 µg/cm2 ; Chl-bs: 2, 76±0, 52 µg/cm2 ; Chl-cs: 3, 69±1, 59 µg/cm2) were recorded in the Danube. The research found high microphyte diversity in the sediment of both the river (63) and its floodplain lake (99). Two representatives of cyanobacteria, an invasive species Cylindrospermopsis raciborskii and Heteroleibleinia ucrainica, as well as green alga Monoraphidium contortum and diatom Navicula cryptocephala were the most common microphytes at both sites. The established microphyte community structure suggests that both aquatic ecosystems have characteristics of eutrophic waters.

Izvorni jezik
Hrvatski

Znanstvena područja
Biologija

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