Tamás Mester

University of Debrecen · Department of Landscape Protection and Environmental Geography

In this study the effects of nitrogen effluent from a permeable constructed sewage tank on groundwater quality were investigated. Sampling took place before and 1.5 years after the closure. Using a 3D hydrogeological model, the spatial distribution of dissolved inorganic nitrogen (DIN), comprising the species NH4+, NO2- and NO3-, was modelled in th...

In the present study, changes in groundwater quality are assessed after the construction of the sewerage network, based on 3 water quality indices. Sampling took place before (2013) and after (2017, 2018, 2019) the establishment of a sewerage network in 2014. In the pre-sewerage period, strong pollution of the groundwater was detected. A total of 9...

In the present study, the impact of the construction of the sewerage network (2014) on groundwater quality was studied on the example of a middle-sized settlement in the Great Hungarian Plain and changes in water quality were assessed using GIS and multivariate statistical analysis. As a result of the pollution that has been going on for decades, t...

Disposal sites without adequate engineering controls pose a significant risk to the environment. In the present study, the environmental hazards of an abandoned and unrecultivated liquid waste disposal are investigated with a special focus on soil and shallow groundwater contamination. After a period of operation from 1994 to 2010, when the wastewa...

Septic tanks without proper construction and insulation entail a significant risk to the environment. In this study, the environmental impacts of a permeably designed septic tank on shallow groundwater contamination are investigated, and changes in water quality in the period after its elimination in 2014 are assessed. For the purpose of evaluating...

The increasing number of visitors and conflicts resulting from shared use in valorising sensitive wetlands make effective visitor and site management measures essential. In the course of this research, the landscape pattern, the current spatial distribution of tourist activities and the possible arrangement of expedient further development were exa...

In this research, contamination levels and the spatial pattern identification, as well as human and environmental health risk assessments of the heavy metals in the phreatic groundwater aquifer of the Oued Souf Valley were investigated for the first time. The applied methodology comprised a combination of heavy-metal pollution indices, inverse dist...

Attila Kerényi, Professor of Geography, was born in 1943 in Sátoraljaújhely. He earned a degree as a teacher of Geography and Biology in 1967. During the 1980s, he gained national and international scientific recognition for his research on soil erosion processes, and completed his candidate dissertation in 1984. In the 1990s, he became nationally...

The evaluation, visualization of environmental data from long-term monitoring, and making them accessible in a processed form in user-friendly interfaces on the Internet are important tasks of our time. The pollution of groundwater resources in settlements is a global phenomenon, the mitigation of which requires a number of environmental measures....

Outdoor recreation has grown rapidly in recent years, with an increasing preference for areas in good ecological condition. Since lakes represent some of the most important wetlands, providing a wide variety of ecosystem services, they have become a very popular destination. The present study aimed to assess the water quality of the largest artific...

In this research, a climatic synthesis was built to assess the climatic parameters of the Oued Souf Valley through the meteorological data obtained from Guemar station (airport). It was revealed that the hydrological year of Oued Souf Valley is branded by the presence of a dry period and the total absence of a wet period over the year, even during...

Since the beginning of the 1980s, several regions in the northern Sahara of Algeria have been confronting the rising groundwater. Among all these regions, Oued Souf Valley represented one of the most acute affected by this phenomenon. Due to the natural topography and the insuffi-cient/weakness of water management and miscoordination between differ...

The provision of webGIS-based water quality data services has become a priority area for both the public and administrative sectors in the context of the pandemic emergency associated with the global spread of COVID-19. Current geographic, monitoring and decision supporting systems, typically based on web-based geospatial information, greatly facil...

This research aims to assess the hydrogeochemical evolution of the groundwater in Oued souf valley for drinking and irrigation purposes. To achieve this, 49 groundwater samples from the complex terminal were examined and treated concurrently with multivariate statistical methods, geostatistical modeling and the WQI (water quality index). Focusing o...

Tanulmányunkbanegy szigeteletlen kommunális szennyvízakna környezetében vizsgáltuka talaj fixált NH4-N tartalmánakatalajvíz tisztulási folyamataira gyakorolt hatását. A mintaterületen található szennyvízaknát 27 éves működést követően 2014-ben számolták fel a településen kiépülő szennyvízelvezető csatornahálózattal párhuzamosan. In this study the...

The anthropogenic pollution of the phreatic aquifer of Oued Souf valley plays an axial role for detecting its suitability for drinking water purposes. Therefore, in this study, we evaluated and assessed water quality parameters (EC, BOD5, NH4 +, NO2 -) affected by anthropogenic activities according to WHO and Algerian standards. 100% of the monitor...

The appearance of online map services and frameworks (e.g., KML, QGIS) has increased the possibilities to easily, quickly and-in many cases-cost-effectively publish spatial data stored in databases. The aim of this study is to present the geovisualization of spatial databases of a Hungarian settlement on the web, using the open source webGIS system...

Because of the increased demand for information, the scientific community have published their results on the Internet over the last 20 years, adapting to society requirements. Due to the development of web-based spatial information soil systems, access to data on various themes and of varying quality has become substantially easier. The focus of o...

The aim of this study is to investigate the knowledge structure of the Hungarian population towards Renewable Energy Sources (RES) in order to lay the foundations for environmental-and energy policy decisions. 1066 individuals were included in the representative survey. The word association method was used to assess whether the population was aware...

The countries of the European Union are required to establish a sewage system in every settlement which has a population over 2000. In this Eastern-Hungarian case study the effects of the establishment of a sewage system on groundwater quality are evaluated. It was concluded that due to the contamination, which lasted several decades, the groundwat...

The quantity, the compound, and the ratio of recycling of waste generation’s trend are strongly influenced by technological development and limited natural resources in the long term, and by market and legal regulatory conditions in the short term. This has been well-demonstrated by the changes happened after the turn of the millennium in Hungary....

In the framework of a questionnaire survey an attitude examination was conducted among inhabitants of 3-3 settlements of Hajdú-Bihar and Heves county in connection with the renewable energy sources. With the help of the word-association method authors tried to assess whether the population of the examined settlements is aware of the meaning of the...

In our study, by investigating reambulated soil profiles from the Nagy-Sárrét region in Hungary, we attempt to determine the extent of changes which have occurred due to effects which impacted the landscape in terms of the soil chemistry properties of soil profiles exposed during the Kreybig soil survey more than 70 years ago. Based on the results,...

In our study we attempt to demonstrate the effects of uninsulated sewage tanks, which are the most important sources of contamination in settlements without sewage systems, on groundwater quality. We compared the results of measurements carried out before and one and a half years after the construction of the sewage system. We established 3 m deep...

In the present paper we suggest a novel calibration method of the model for hydrodynamic and contaminant transport using the example of a sewage disposal site set up uninsulated in a sandy environment. With the hydrodynamic model we applied timedependent model calculations in order to fit the individual hydrodynamic parameters. For the calibration...