István Bácsi
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View article: Salinity tolerance and desalination properties of a Haematococcus lacustris strain from eastern Hungary
Salinity tolerance and desalination properties of a Haematococcus lacustris strain from eastern Hungary Open
Nowadays the increasing amount of saline wastewaters has given rise to various biological desalination processes, among which the application possibilities of microalgae represents a priority research area. Next to “real” aquatic species (…
View article: Aquatic phases have a stronger effect on lotic benthic diatoms than human-induced microhabitat variability
Aquatic phases have a stronger effect on lotic benthic diatoms than human-induced microhabitat variability Open
Here, we studied the influence of changes of aquatic phases (standing and flowing phases) and human-induced habitat variability (natural and artificial) on the composition and diversity of benthic diatom assemblages in a small lowland stre…
View article: Role of microhabitats in shaping diversity of periphytic diatom assemblages
Role of microhabitats in shaping diversity of periphytic diatom assemblages Open
Diverse macrovegetation can provide heterogeneous habitats for benthic diatoms. The removal of macrophytes as direct plant control, however, can be considered as a threat, which can even lead to remarkable microhabitat alterations. Lake Ti…
View article: The Impacts of Land Use and Seasonal Effects on Phytoplankton Taxa and Physical-Chemical Variables in the Tigris River within the City of Mosul
The Impacts of Land Use and Seasonal Effects on Phytoplankton Taxa and Physical-Chemical Variables in the Tigris River within the City of Mosul Open
We investigated the effect of land use based on the dominant phytoplankton and physical-chemical variables in the different areas of the Tigris River, within the city of Mosul. Agricultural and urban activities have a significant impact on…
View article: Flow Intermittence Drives the Benthic Algal Composition, Biodiversity and Diatom-Based Quality of Small Hilly Streams in the Pannonian Ecoregion, Hungary
Flow Intermittence Drives the Benthic Algal Composition, Biodiversity and Diatom-Based Quality of Small Hilly Streams in the Pannonian Ecoregion, Hungary Open
Climate change is putting increasing pressure on flowing waters. Drastic water level fluctuations in rivers or drying up of small and medium-sized streams all contribute to the biodiversity crisis threatening freshwater ecosystems. Benthic…
View article: The Effects of Photobioreactor Type on Biomass and Lipid Production of the Green Microalga Monoraphidium pusillum in Laboratory Scale
The Effects of Photobioreactor Type on Biomass and Lipid Production of the Green Microalga Monoraphidium pusillum in Laboratory Scale Open
Mass production of microorganisms, algae among them, for new bioactive compounds and renewable innovative products is a current issue in biotechnology. The greatest challenge of basic research on this topic is to find the best solution for…
View article: Changes in Algal Plankton Composition and Physico-Chemical Variables in a Shallow Oxbow Lake
Changes in Algal Plankton Composition and Physico-Chemical Variables in a Shallow Oxbow Lake Open
In our work, we sought to answer whether we find differences among the various zones of an oxbow lake with different land uses based on physico-chemical variables and dominant algal plankton species. The two ends of the oxbow lake are bord…
View article: Horseradish Essential Oil as a Promising Anti-Algal Product for Prevention of Phytoplankton Proliferation and Biofouling
Horseradish Essential Oil as a Promising Anti-Algal Product for Prevention of Phytoplankton Proliferation and Biofouling Open
Increased proliferation of algae is a current problem in natural and artificial water bodies. Controlling nutrients is the most sustainable treatment of increased algal proliferation, however in certain cases, it is not sufficiently availa…
View article: Effects of Nutrient Content and Nitrogen to Phosphorous Ratio on the Growth, Nutrient Removal and Desalination Properties of the Green Alga Coelastrum morus on a Laboratory Scale
Effects of Nutrient Content and Nitrogen to Phosphorous Ratio on the Growth, Nutrient Removal and Desalination Properties of the Green Alga Coelastrum morus on a Laboratory Scale Open
In wastewater, nutrient concentrations and salinity vary substantially, however, the optimal N:P ratio for the treatment using microalgae is not well described. In this study, the effects of higher and lower nitrate and phosphate contents …
View article: Strong influence of climatic extremes on diversity of benthic algae and cyanobacteria in a lowland intermittent stream
Strong influence of climatic extremes on diversity of benthic algae and cyanobacteria in a lowland intermittent stream Open
Freshwater ecosystems are threatened by the global change‐induced extreme climatic events worldwide. The unpredictable changes in water supply create strongly disturbed environments and ultimately result in diversity changes. Here, we stud…
View article: Effects of metal quantity and quality to the removal of zinc and copper by two common green microalgae (Chlorophyceae) species
Effects of metal quantity and quality to the removal of zinc and copper by two common green microalgae (Chlorophyceae) species Open
SUMMARY Appearance of metals as pollutants in the environment is an increasing global problem. Microalgae as subjects of biological remediation methods may provide a cost‐effective and environmentally friendly alternative to the removal of…
View article: Salt Tolerance and Desalination Abilities of Nine Common Green Microalgae Isolates
Salt Tolerance and Desalination Abilities of Nine Common Green Microalgae Isolates Open
In recent years, decline of freshwater resources has been recognized as one of the main environmental problems on global level. In addition to the increasing extent of primary salinization due to climate change, secondary salinization caus…
View article: Autumn drought drives functional diversity of benthic diatom assemblages of continental intermittent streams
Autumn drought drives functional diversity of benthic diatom assemblages of continental intermittent streams Open
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View article: Potential role of the cellular matrix of Aphanizomenon strains in the effects of cylindrospermopsin—an experimental study
Potential role of the cellular matrix of Aphanizomenon strains in the effects of cylindrospermopsin—an experimental study Open
Some literature data suggest that one of the possible roles of the cyanotoxin cylindrospermopsin (CYN) is forcing other phytoplankton species in the environment to produce alkaline phosphatase, which enables the cyanobacterium to take up t…
View article: Colonisation processes in benthic algal communities are well reflected by functional groups
Colonisation processes in benthic algal communities are well reflected by functional groups Open
Single-trait analyses are used to select the most appropriate species characteristics for an effective indication of changes in multiple stressors, but they are robust to detect fine-scale functional changes in biofilms. The combination of…
View article: Functional diversity supports the biomass–diversity humped‐back relationship in phytoplankton assemblages
Functional diversity supports the biomass–diversity humped‐back relationship in phytoplankton assemblages Open
Summary Modelling the relationship between biomass and diversity in phytoplankton assemblages provides new insights into the mechanisms responsible for the coexistence of species, even in terrestrial ecosystems. We tested the biomass–diver…
View article: Effects of Cylindrospermopsin Producing Cyanobacterium and Its Crude Extracts on a Benthic Green Alga—Competition or Allelopathy?
Effects of Cylindrospermopsin Producing Cyanobacterium and Its Crude Extracts on a Benthic Green Alga—Competition or Allelopathy? Open
Cylindrospermopsin (CYN) is a toxic secondary metabolite produced by filamentous cyanobacteria which could work as an allelopathic substance, although its ecological role in cyanobacterial-algal assemblages is mostly unclear. The competiti…
View article: First report of Navicula jakovljevicii Hustedt (Bacillariophyta) from Hungary: distribution, comparative morphology and a related species
First report of Navicula jakovljevicii Hustedt (Bacillariophyta) from Hungary: distribution, comparative morphology and a related species Open
In Hungary Navicula jakovljevicii was firstly recorded in biofilm of Elodea nuttallii in 2005 in an oxbow of the catchment area of the River Danube. Subsequently, in 2006, N. jakovljevicii was also found in the same oxbow on reed stems as …
View article: Halophilic diatom taxa are sensitive indicators of even short term changes in lowland lotic systems
Halophilic diatom taxa are sensitive indicators of even short term changes in lowland lotic systems Open
The occurrence and spread of halophilic diatom taxa in freshwater lotic ecosystems are influenced both by natural processes and anthropogenic pollution. Diatom assemblages were regularly monitored in lowland lotic systems in Hungary (Centr…
View article: Alterations of phytoplankton assemblages treated with chlorinated hydrocarbons: effects of dominant species sensitivity and initial diversity
Alterations of phytoplankton assemblages treated with chlorinated hydrocarbons: effects of dominant species sensitivity and initial diversity Open
Changes in composition of phytoplankton assemblages due to short-chained chlorinated hydrocarbons (tetrachloroethane, tetrachloroethylene and trichloroethylene) were studied in microcosm experiments with different initial diversities. Dive…