Filip Stević

Filip Stević
University of Osijek | UNIOS · Department of Biology

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33
Publications
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567
Citations

Publications

Publications (33)
Article
Changes in the functional groups of zooplankton were studied in autumn in a temperate floodplain lake (Lake Sakadaš, Kopački Rit Nature Park, Croatia) and in the Drava River (in the Croatian part of the river). Various abiotic parameters as well as available food sources (phytoplankton and microphytes (algae and cyanobacteria) developing on epixylo...
Article
To study the early colonization processes, polyethylene terephthalate (PET) microfragments were immersed in Lake Sakadaš and the Drava River and sampled weekly together with the surrounding biotic communities - phytoplankton, zooplankton, epixylon in the lake and epilithon in the river. At the end of the study, a rise in water level occurred in the...
Chapter
Algae can absorb and accumulate exogenous selenium (Se) from their environment through physicochemical and biological mechanisms. Nutritional essentiality to Se, the dose and Se speciation influence its uptake in different algal taxa and represent crucial factors in their cellular response. This chapter summarises previous studies and key concepts...
Article
Full-text available
To determine the drivers of phytoplankton biomass, we collected standardized morphometric, physical, and biological data in 230 lakes across the Mediterranean, Continental, and Boreal climatic zones of the European continent. Multilinear regression models tested on this snapshot of mostly eutrophic lakes (median total phosphorus [TP] = 0.06 and tot...
Article
Full-text available
The rapid growth and spreading of invasive plant species could be related to their efficient photosynthesis performance. We analysed and compared photosynthetic efficiency of invasive indigo bush (Amorpha fruticosa L.) and noninvasive native Quercus robur L., Alnus glutinosa L., Populus alba L., and Cornus sanguinea L. with the overlapping distribu...
Article
Croatia, having high plant species diversity, offers an important opportunity for studying the wild plant uses in an ethnobotanical context. Comprehensive investigations were undertaken in Croatian Mediterranean areas, but little is currently known about wild plants traditionally used by local populations in the north-eastern part of Croatia situat...
Article
Full-text available
Under ongoing climate change and increasing anthropogenic activity, which continuously challenge ecosystem resilience, an in-depth understanding of ecological processes is urgently needed. Lakes, as providers of numerous ecosystem services, face multiple stressors that threaten their functioning. Harmful cyanobacterial blooms are a persistent probl...
Article
The estimation of the toxic influences of herbicide products on non-target aquatic organisms is essential for evaluation of environmental contamination. We assessed the effects of the herbicide S-metolachlor (S-MET) on unicellular green microalga Parachlorella kessleri during 4-72 in vitro exposure to concentrations in the range 2-200μg/L. The resu...
Article
Full-text available
Insight into how environmental change determines the production and distribution of cyanobacterial toxins is necessary for risk assessment. Management guidelines currently focus on hepatotoxins (microcystins). Increasing attention is given to other classes, such as neurotoxins (e.g., anatoxin-a) and cytotoxins (e.g., cylindrospermopsin) due to thei...
Article
Full-text available
Insight into how environmental change determines the production and distribution ofcyanobacterial toxins is necessary for risk assessment. Management guidelines currently focus onhepatotoxins (microcystins). Increasing attention is given to other classes, such as neurotoxins (e.g.,anatoxin-a) and cytotoxins (e.g., cylindrospermopsin) due to their p...
Article
Habitat fragmentation and modification have been recognized as the most serious threats to biodiversity. In Croatia, the intensive human activities resulted in the landscape transformation, reduction of grassland areas and loss of species number. Increasingly threatened are the wild edible and medicinal plants which contribute remarkably to the bio...
Article
Under ongoing climate change and increasing anthropogenic activity, which continuously challenge ecosystem resilience, an in-depth understanding of ecological processes is urgently needed. Lakes, as providers of numerous ecosystem services, face multiple stressors that threaten their functioning. Harmful cyanobacterial blooms are a persistent probl...
Article
Full-text available
Intensive human activities have resulted in a critical reduction of grasslands in Croatia, one of the richest Europian countries in terms of biodiversity. Sub-Pannonic steppic grasslands are very rare, only few occur in the continental part of Croatia and most of them are protected as NATURA 2000 sites. We studied vascular flora of the Sub-Pannonic...
Article
Full-text available
The diversity of early spring vascular flora was studied in the Sub-Pannonic steppic grassland in the village of Bilje, north eastern Croatia. In all, 109 plant taxa within 35 families were found. The highest number of taxa belongs to the families Poaceae, Fabaceae, Asteraceae, Caryophyllaceae, Lamiaceae and Rosaceae. Specific habitat conditions, c...
Article
Full-text available
Coarse woody debris (CWD) are an important structural feature of many aquatic ecosystems. This study focused on the relationships between nematode colonization and microphytic community structure on CWD. In situ investigations were performed using white willow branches introduced into the floodplain lake, a part of the large natural floodplain in t...
Article
Full-text available
Disturbance event-driven changes in periphytic algal communities were studied in a Danubian floodplain using artificial substrata (glass slides). The hydrological regime of the river-floodplain system strongly influenced the physical and chemical environment of the investigated lake. Directional changes in the algal communities, demonstrated by the...
Article
The traditional taxonomic approach is today being supplemented by ecological classifications of phytoplankton following the concepts of functional groups (FG), morpho-functional groups (MFG), and morphology-based functional groups (MBFG). In this study, we compared the potential of all three concepts in the evaluations of phytoplankton changes in t...
Article
Current efforts to yield an appropriate method that would simplify the use of phytoplankton in the ecological evaluation of freshwaters resulted in different approaches based on clustering phytoplankton organisms. In this study, we applied the morphology-based functional group (MBFG) concept to determine the spatial changes of phytoplankton in the...
Article
Temporal changes in autotrophic periphyton (algae and cyanobacteria) in relation to the colonization of Dreissena polymorpha, an invasive species, were investigated in situ using artificial substrata (glass slides) from April to August of 2008 in a Danubian floodplain. The colonization of cyanobacteria and planktonic diatoms firmly attached to the...
Article
During the past decade, basic hydrological conditions of a floodplain lake in the middle Danube section have been altered with long-lasting extremely high flooding. The objective of the paper is to show the effectiveness of the functional approach to explain phytoplankton changes associated with hydrological events. Intensity and duration of floodi...
Article
In this research, we aimed to find out how the differences in hydrological connectivity between the main river channel and adjacent floodplain influence the changes in phytoplankton community structure along a river-floodplain system. The research was performed in the River Danube floodplain (Croatian river section) in the period 2008-2009 characte...
Article
Full-text available
The changes in composition and abundance of phytoplankton and periphytic algae during the successions of dry and flood phases were investigated in an eutrophic Danubian floodplain lake during the summer-autumn period. The in-lake conditions (high nutrient concentration, high water temperature) during the dry phase in summer stimulated an increase o...
Article
Full-text available
The colonization of periphytic algae in a temperate floodplain was studied in Lake Sakadaš, a part of a fluvial floodplain along the Danube River. An in situ investigation, using artificial substrata, was started after extremely high spring flooding and was carried out during long-lasting summer floods (July–August 2010). The physical and chemical...
Article
Full-text available
Changes in the hydrologic regime have been a driving force for maintaining biodiversity of floodplain communities. Recent studies have shown that periphytic biomass is closely related to the hydrologic cycle and disturbances caused by flood pulses. This study was conducted in Lake Sakadaš which is a part of one of the largest conserved Danube flood...
Article
In the past decade, extreme hydrological events were expressed with extreme droughts and floods in temperate regions. The aim of this paper is to explain how such changes in hydrology can influence cyanobacterial populations in floodplain ecosystems. We therefore analyzed a 6-year (2003-2008) study of the phytoplankton in the Kopački Rit floodplain...
Article
The influence of extreme floods from the River Danube in 2006 on the species composition and vertical distributions of phytoplankton was studied in a shallow floodplain lake, Lake Sakadaš (Kopački Rit Nature Park, Croatia) which in the last few decades was in a turbid state characterised by high phytoplankton concentrations. As a consequence of ext...
Article
There are several conflicting hypothesis that deal with the influence of flooding in the natural river–floodplain systems. According to the Flood Pulse Concept, the flood pulses are not considered to be a disturbance, while some recent studies have proven that floods can be a disturbance factor of phytoplankton development. In order to test whether...
Article
ackground and Purpose: The Danubian flood area in northeastern Croatia (Baranja Region) covers approximately 53 000 ha, of which the protected area of the Nature Park Kopački rit includes approx. 23 000 ha. Phases of floods and droughts are the main characteristic of floodplain aquatic environments. The aim of this paper is to compare the microphyt...
Article
The unicellular green alga Chlorella kessleri FOTT et NOV. is suitable for the evaluation of the AGP by the miniaturized bioassay method in order to evaluate the trophic level and the productivity and toxicity of water ecosystems. The aim of this paper is to compare in situ phytoplankton growth with the influence of the addition of nitrates and pho...

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