A5054629476- Aquatic Ecosystems and Phytoplankton Dynamics
- Aquatic Invertebrate Ecology and Behavior
- Fish Ecology and Management Studies
- Soil and Water Nutrient Dynamics
- Marine and coastal ecosystems
- Marine and environmental studies
- Freshwater macroinvertebrate diversity and ecology
- Phosphorus and nutrient management
- Peatlands and Wetlands Ecology
- Water Quality Monitoring Technologies
- Constructed Wetlands for Wastewater Treatment
- Coastal wetland ecosystem dynamics
- Hydrological Forecasting Using AI
- Ecology and biodiversity studies
- Water Quality and Pollution Assessment
- Hydrology and Sediment Transport Processes
- Smart Materials for Construction
- Hydrology and Watershed Management Studies
- Geological formations and processes
- Hungarian Social, Economic and Educational Studies
- Plant responses to water stress
- Diatoms and Algae Research
- Groundwater and Isotope Geochemistry
- Calcium Carbonate Crystallization and Inhibition
- Hydrocarbon exploration and reservoir analysis
Budapest University of Technology and Economics
2002-2024
Water Resources Research Centre
2017-2024
Hungarian Academy of Sciences
2001-2018
Dundalk Institute of Technology
2013
Balaton Limnological Institute
1986-1994
Uppsala University
1993
We assembled data from a global network of automated lake observatories to test hypotheses regarding the drivers ecosystem metabolism. estimated daily rates respiration and gross primary production (GPP) for up full year in each lake, via maximum likelihood fits free‐water metabolism model continuous high‐frequency measurements dissolved oxygen concentrations. Uncertainties were determined by bootstrap analysis, allowing lake‐days with poorly constrained rate estimates be down‐weighted...
Abstract After 25 years of apparently successful eutrophication management, a record‐breaking mixed bloom Ceratium furcoides and Aphanizomenon flos‐aquae developed unexpectedly in 2019 the large, polymictic Lake Balaton. The peak concentration chlorophyll exceeded 300 mg/m 3 , 1.5 times higher than pre‐management maxima. external load was insufficient to provide phosphorus (P) required support this bloom, its taxonomic composition radically different from blooms 1980s. We hypothesised: (1)...
A grassroots, global network to examine lake function using sensor data?Why not?That was the perspective of Drs.
SUMMARY. 1. In 1984 an enclosure experiment was carried out in order to elucidate the importance of nutrient supply from fish phytoplankton during critical summer period eutrophic Lake Balaton. One stocked with and other left empty. 2. Two peaks were recorded primary production reaching maximum values enclosure. 3. fish, inorganic nitrogen concentrations increased gradually till end experiment, ammonia making up largest component. Lower dissolved phosphorus enclosure, its higher rate, may...
Summary 1. As supported by field data, turbidity recorded light scattering sensors could reliably be converted into concentration of suspended particulate matter (SPM) and coefficient vertical attenuation ( K d ) in Lake Balaton. 2. Autocorrelation analysis revealed that proper determination SPM required daily sampling. To approximate rate resuspension, 15 min or more frequent measurements were needed. Thus, routine monitoring provides very little insight environmental variability shallow...
Abstract Phytoplankton biomass and production regulates key aspects of freshwater ecosystems yet its variability subsequent predictability is poorly understood. We estimated within‐lake variation in using high‐frequency chlorophyll fluorescence data from 18 globally distributed lakes. tested how at monthly, daily, hourly scales was related to wind, water temperature, radiation within lakes as well productivity physical attributes among Within lakes, monthly dominated, but combined daily were...
A Balaton vízháztartása az éghajlatváltozás miatt jelentős átalakuláson megy keresztül. Az átlagosan pozitív éves természetes vízkészletváltozás előrejelzések többsége szerint csökkenni fog. Ezért éghajlati modelleredményekre támaszkodó hidrológiai és vízszintszabályozási modellekkel vizsgáltuk a tó vízszintjének várható változásait optimista RCP4.5 realista RCP8.5 IPCC forgatókönyvekre. forgatókönyvben jelenlegi alakja egészen század végéig fennmarad, bár vízállás – vízpótlás hiányában...
Click to increase image sizeClick decrease size This article is part of the following collections: 1922–2022: 100 years SIL publications
Summary 1. This study introduces delayed fluorescence (DF) excitation spectroscopy as an on‐line tool for in situ monitoring of the composition and biomass various colour classes phytoplankton when they are photosynthetically active (cyanobacteria, chlorophytes, chromophytes cryptophytes). The DF data validated by comparison with those from conventional methods (weekly microscopic counts measurement chlorophyll concentration). 2. assessed agreed reasonably well results counts, particularly...
Enclosures isolating 17 m 3 water with the underlying sediments in mesotrophic area of Lake Balaton were used to simulate main processes taking place its hypertrophic area. In an enclosure both P and N added production biomass phytoplankton increased immediately. Algae rapidly took up nutrients, transporting a third loadings from supplying large amount organic substrate for denitrification. As result loss system, Aphanizomenon flos‐aquae formed second bloom. only algae remained similar those...