Naslov
Usporedba raznolikosti mikrofita prije i nakon revitalizacije kanala Ivovac
(Comparison of microphyte diversity before and after revitalization of the Ivovac channel)

Autori
Šag, Matej ; Zahirović, Vanda ; Bek, Nikolina ; Žuna Pfeiffer, Tanja ; Sadiković, Jasmin ; Kovačević, Kristina ; Stević, Filip ; Špoljarić Maronić, Dubravka

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

Izvornik
Zbornik sažetaka 11. simpozija s međunarodnim sudjelovanjem, Kopački rit - jučer, danas, sutra 2022. / Ozimec, Siniša ; Bogut, Irella ; Bašić, Ivo ; Rožac, Vlatko ; Stević, Filip ; Popović, Željko - Kopačevo : Javna ustanova "Park prirode Kopački rit", 2022, 168-171

Skup
11. simpozij s međunarodnim sudjelovanjem: Kopački rit - jučer, danas, sutra = 11h Symposium with International Participation: Kopački rit - past, present, future

Mjesto i datum
Osijek, Hrvatska, 29.09.2022. - 30.09.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
fitoplankton ; epiksilon ; Zlatna Greda ; Kopački rit
(phytoplankton ; epixylon ; Zlatna Greda ; Kopački Rit)

Sažetak
The Ivovac channel, located on the edge of the Nature Park Kopački Rit, is important part of the NATURA 2000 area. The channel was connected to the Danube floodplain area as a part of the network of backwaters and channels. Due to the construction of the Osijek-Zmajevac embankment, it was separated from the constant water flow. Water regime changes led to the deposition of organic matter in the channel, habitat loss, and the disturbances of various biotic communities. However, to preserve the floodplain area and its biological diversity, the revitalization of the channel was conducted. The research of phytoplankton and microphytes (algae and cyanobacteria) in epixylon, as important indicators of the ecological state in aquatic ecosystems, was conducted in April 2019, before the revitalization, and in June 2021, after the revitalization of the Ivovac channel. Channel banks were overgrown with Phragmites australis before the revitalization and macrophytic vegetation was scarcely developed. After the revitalization macrophytes vegetation developed and beside the P. australis, Typha latifolia, Carex sp., Iris pseudacorus, Ceratophyllum demersum, Myriophyllum sp., Lemna sp., Salvinia natans and Nymphoides peltata also were recorded. The research periods also differed in regard to the monitored limnological parameters. The revitalization resulted to an increase in water depth (from 0.2 to 1.5 m), transparency (from 0.2 to 0.32 m), total suspended solids in the water (from 7.8 to 9.9 mg/L) and lower conductivity (from 792 to 714 µS/cm), ammonium concentration (from 0.016 to 0.0039 mg/L), total phosphorus (from 0.28 to 0.11mg/L) and total nitrogen (from 0.78 to 0.69 mg/L). In the research period before the revitalization, the abundance of phytoplankton was low, as indicated by chlorophyll concentration (chlorophyll-a 3.66 µg/L) with only 30 taxa present. After revitalization, the chlorophyll concentration was higher (chlorophyll-a 13.42 µg/L), and 54 taxa were recorded with the most represented taxa from the Bacillariophyta (diatoms), Chlorophyta (green algae) and Euglenophyta. A higher diversity of taxa was also found in epixylon after revitalization (110 taxa), and the most represented were diatoms and mostly filamentous green algae. Results indicate that the revitalization and permanent intake of water led to the improvement of the ecological conditions of the Ivovac channel and therefore to the increase of phytoplankton and microphytes diversity in the epixylon.

Izvorni jezik
Hrvatski

Znanstvena područja
Biologija

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