Filiz Dadaser-Celik

• Ph.D.
• Professor at Erciyes University

The calibration of ecohydrological models is challenging in semi-arid regions, particularly for data-scarce conditions. Precise uncertainty analysis is also critical for determining the range of uncertainty in model predictions. In this study, we evaluated the applicability of a ecohydrological model, Soil and Water Assessment Tool (SWAT), for a da...

Reservoirs are essential structures that have important functions in water supply, flood control, irrigation for agriculture, and hydroelectric production. These functions can only be realized with an effective reservoir operation. Artificial intelligence (AI) techniques can be used for forecasting reservoir volumes, which is a critical parameter f...

Dynamic modelling of brackish water lakes presents significant challenges due to variations in salinity and density over both temporal and spatial scales. These challenges are further exacerbated by anthropogenic activities that disturb the hydrologic regimes of these lakes. This study aims to construct a 3-dimensional (3D) hydrodynamic and water q...

The complex relationships between social and environmental systems create challenges for environmental sustainability. In this study, we used the fuzzy cognitive mapping approach to investigate human–aquifer interactions at the Palas Basin (Kayseri, Türkiye). Cognitive maps are casual maps that reflect the perceptions and understandings of differen...

Physically based or data-driven models can be used for understanding basinwide hydrological processes and creating predictions for future conditions. Physically based models use physical laws and principles to represent hydrological processes. In contrast, data-driven models focus on input–output relationships. Although both approaches have found a...

Pesticides are chemicals used for agricultural, industrial, and household purposes to increase crop yield and enhance product quality, avoid pests, plant diseases, weeds and repel pests. Pesticides are classified as herbicides, insecticides, fungicides and rodenticides based on target pests. Pesticides are transported to the environment through sur...

Modelling climate change impacts is important for sustainable water management under changing climatic conditions. Soil and Water Assessment Tool (SWAT) is among the most used watershed-scale models for modelling climate change impacts. In this study, a review of the literature about the use of SWAT in climate change impact assessment is provided....

Bu çalışmada, SWAT+ hidrolojik modelinin ve SWAT+ Toolbox yazılımının Güney Marmara Havzası'ndaki performansı araştırılmaktadır. Hidrolojik modeller, hidrolojik döngüyü ve ilgili süreçleri analiz etmek için karmaşık havza yapılarını basitleştiren, su havzalarında etkili yönetim için kullanılan önemli araçlardır. Hidrolojik modeller, su yönetiminden...

Prediction of precipitation at locations that lack meteorological measurements is a challenging task in hydrological applications. In this study, we aimed to demonstrate the potential use of multiscale geographically weighted regression (MGWR) method used to predict precipitation based on relevant meteorological parameters. Geographically weighted...

The contamination of wastewater with micropollutants has been placed at the forefront of environmental problems in recent decades due to the adverse impacts of these chemicals on human and aquatic life. Micropollutants include a diverse range of chemicals, e.g. those labeled as hormone disrupters, pharmaceutical residues, personal care products, pe...

Altınapa Reservoir is a reservoir located on the Meram Stream in the Konya Province in Türkiye that supplies drinking water. The Altınapa Reservoir feeds the Konya Drinking Water Treatment Plant with 37.8 million m 3 of water annually and the treated water is delivered by the drinking water network. The aim of this study was to determine the effect...

Altınapa Reservoir is a reservoir located on the Meram Stream in the Konya Province in Türkiye that supplies drinking water. The Altınapa Reservoir feeds the Konya Drinking Water Treatment Plant with 37.8 million m3 of water annually and the treated water is delivered by the drinking water network. The aim of this study was to determine the effect...

Although activated carbon adsorption is a very promising process for the removal of organic compounds from surface waters, the removal performance for nonionic pesticides could be adversely affected by co-occurring natural organic matter. Natural organic matter can compete with pesticides during the adsorption process, and the size of natural organ...

Land surface temperature (LST) is an important parameter that reflects land surface processes of water and energy balance and has been used in assessment of land use/cover changes. However, the use of LST in monitoring changes in non-urban areas such as agricultural areas and wetlands is still limited. In this study, we aim to determine the spatial...

This study investigates the spatial and temporal changes in groundwater levels and quality in the Palas Basin, a relatively-pristine semi-arid agricultural basin in T . Although groundwater is solely used as irrigation and drinking potable water resource throughout the basin, measurements regarding the dynamics and quality of groundwater were quite...

Climate change can have severe impacts on the water availability in semi-arid regions. In this study, we assessed the impact of climatic changes on water availability in the Altınapa Reservoir Watershed, located in the Konya province, south-central Turkey. Altınapa Reservoir supplies drinking water to Konya, a city of about 2 million population. We...

Pesticides have been used widely all over the world for centuries to increase agricultural production and to combat harmful pests. Pesticides used for agriculture, household, and public health sectors eventually reach water bodies, posing a risk to human health and the environment even in micro concentrations. Each country legally sets its own maxi...

Outdoor education has many beneficial effects on children’s learning and cognitive abilities and their connectedness to nature. This study aims to evaluate the impact of short-term outdoor education on the nature perception and knowledge of gifted students. Thirty gifted students were enrolled in a 7-day outdoor education activity. The camp include...

Groundwater is one of our major water resources, which is affected by hydrological, climatic, and anthropogenic factors. DRASTIC model is a widely-used index-based method that can be used to evaluate the vulnerability of the groundwater systems to pollution. DRASTIC uses depth to water (D), net recharge (R), aquifer media (A), soil media (S), topog...

Volcanic aquifers are regarded as important aquifer systems. They have quite variable chemical, structural, and hydrologic properties. In this study, hydrochemical analysis, multivariate statistical and clustering techniques were used to investigate water quality in Mt. Erciyes stratovolcano aquifer system, in central Turkey. Equilibrium analysis a...

Basins with hydrological modifications pose challenges in hydrological modelling, especially when there are limited data about basin characteristics. Models, however, are vital if we are to identify undisturbed hydrological conditions and evaluate the extent of modifications. In this study, we used SWAT to model the hydrological processes in a semi...

This study aims to evaluate the spatiotemporal variability of water quality at the Altnapa Reservoir Watershed in Turkey. Altınapa Reservoir Watershed is an agricultural watershed located in the semi-arid Central Anatolia Region. Meram Stream drains the basin and eventually discharges into the Altınapa Reservoir, which supplies drinking water to Ko...

Hydrological models can be used for representing hydrological processes and analysing water quantity and quality at the watershed scale. Calibration and uncertainty analyses of these models are important for obtaining reliable results. Various calibration and uncertainty analysis algorithms are available in the literature. In this study, we compare...

Pesticide pollution of surface water resources is a major environmental problem in agricultural basins. Sultan Marshes is a large wetland complex located at the center of semi-arid Develi Basin, Turkey. Irrigated agriculture is widespread around the Sultan Marshes and the marshes act as the receiving medium for the agricultural drainage flows colle...

In this study, we used the Soil and Water Assessment Tool (SWAT) to model hydrological processes in the Altınapa Reservoir Watershed in the Konya province, Turkey. Altınapa Reservoir Watershed is a small semi-arid watershed, which discharges into Altınapa Reservoir, that supplies drinking water to Konya, a city of about 2 million. The modelling pro...

Nüfus artışı ve teknolojik gelişmeler nedeniyle katı atık üretimi hızla artmaktadır. Katı atıklardan kaynaklanan olumsuz etkileri azaltmak için atık yönetiminde çevresel sürdürülebilirliği de dikkate alan entegre yönetim yaklaşımlarının geliştirilmesi büyük önem arz etmektedir. Yaşam döngüsü analizi bir ürün veya hizmetin çevresel etkilerinin değer...

The objectives of this study are to determine the spatial and temporal land use/cover changes in a semi-arid agricultural basin (Develi Basin) after the implementation of an irrigation project and to understand how these changes affected the wetlands (Sultan Marshes) located in the basin. The changes were determined using multitemporal Landsat Them...

This study aims (1) to determine the seasonal and spatial distribution of THMs formed in chlorinated groundwater containing low levels of organic matter (0.4–0.8 mg L⁻¹) and low to high levels of bromine (40–380 μg L⁻¹), and (2) to evaluate the multi-route cancer risks associated with them. The study was conducted in Kayseri (Turkey), where drinkin...

In this study, biogas production from sugar beet pulp and sewage sludge was examined. In order to increase the efficiency of biogas production from these materials, the effects of thermal and chemical pretreatments were evaluated. During the study, anaerobic treatment was carried out under mesophilic condition for 30 days. Biogas production levels...

This study presents an air pollutant emission inventory of primary pollutants for Kayseri, Turkey. Kayseri is one of the largest cities in Turkey which went through industrialization in recent decades together with rapid population growth. Air pollution from residential, industrial, and transportation sources have been a major problem for Kayseri d...

Because of the spatial nature of groundwater-related data and their time component, effective groundwater management requires the application of methods pertaining to the Information and Communication Technologies sector, such as spatial data management and distributed numerical modelling. The objective of this paper is to demonstrate the effective...

Because of the spatial nature of groundwater-related data and their time component, effective groundwater management requires the application of methods pertaining to the Information and Communication Technologies sector, such as spatial data management and distributed numerical modelling. The objective of this paper is to demonstrate the effective...

Wetlands are among the most productive ecosystems that provide services ranging from flood control to climate change mitigation. Wetlands are also critical habitats for survival of numerous plant and animal species. In this study, we used satellite remote sensing techniques for classification and change detection at an internationally important wet...

The main purpose of this paper is to investigate multi-temporal land surface temperature (LST) changes of Konya Closed Basin (KCB) in Turkey using remotely sensed data. KCB is located in the semi-arid central Anatolian region of Turkey and hosts many important wetland sites including Salt Lake. Six Landsat-5 TM images selected from the 1984-2011 pe...

Atmospheric teleconnections provide predictability of the climate system at interannual to decadal timeframes. They can have periods ranging from several weeks to several decades and can affect temperature, precipitation, weather patterns, storm tracks, severe weather, and drought. The teleconnection indices can be correlated at regional and global...

Kayseri is one of the largest cities in the Central Anatolia region with a population of about 1.5 million. Water requirements of Kayseri have increased significantly in recent years due to the rapid population growth and industrial development. Kayseri is one of the cities, which obtain drinking water solely from ground water resources. Ground wat...

VDBSCAN algorithm is a density-based clustering algorithm that performs perfectly on varied-density datasets. It can be used for both clustering and anomaly detection and requires a set of neighbourhood radius of epsilon and minimum number of points MinPts to handle varied-density datasets. VDBSCAN algorithm is based on DBSCAN algorithm and applies...

Water temperature affects all biological and chemical processes in water; therefore, it is an extremely important water quality parameter. Meteorological factors are among the most important factors that affect water temperatures. The aim of this study is to develop an artificial neural network (ANN) model to investigate the effects of meteorologic...

This study examines spatial and temporal dynamics of monthly and annual precipitation over Turkey by analyzing data from 195 meteorological stations for a 26-year period (1980 to 2015). The stations were selected among 238 meteorological stations based on homogeneity analyses conducted with Pettitt test, Standart normal homojeneity test, Buishand r...

Palas Basin is a semi-arid closed basin located in the Central Anatolia region of Turkey. The major economic activity in the basin is agriculture; therefore, both surface water and groundwater are used for irrigation. However, intensive use of water resources threatens the hydrologic sustainability of a lake ecosystem (Tuzla Lake) located in the ba...

Biogas production from food waste has been used as an efficient waste treatment option for years. The methane yields from decomposition of waste are, however, highly variable under different operating conditions. In this study, a statistical experimental design method (Taguchi OA9) was implemented to investigate the effects of simultaneous variatio...

This study examines the trends in reference evapotranspiration (ETo) in Turkey by analysing data from 77 weather stations for a 32-year period (1975–2006). ETo values were calculated using the Penman–Monteith method using air temperature, wind speed, relative humidity, and sunshine hours data. Trends in annual and monthly ETo were determined using...

River water temperature is one of the most important water quality parameters. It not only affects all chemical and biological processes in water but also have important implications for aquatic life. Water temperature variations in rivers can be influenced by different factors, which are generally characterized as meteorological and geophysical par...

Saline lakes are widespread throughout the arid and semi-arid regions of the world and have considerable ecological importance. They are also very vulnerable to climatic changes or changes in their hydrological regimes. Most saline lakes of Turkey are close to the verge of extinction due to natural and anthropogenic impacts. This study analyzes the...

Hydrometeorological patterns can be defined as meaningful and nontrivial associations between hydrological and meteorological parameters over a region. Discovering hydrometeorological patterns is important for many applications, including forecasting hydrometeorological hazards (floods and droughts), predicting the hydrological responses of ungauge...

This study examines the spatial and temporal dynamics of wind speeds over Turkey by analysing data from 206 weather stations for a 32-year period (1975–2006). Trends in annual, seasonal, and monthly average wind speeds were determined using the Mann–Kendall trend test with the trend-free pre-whitening procedure. The strengths of trends were estimat...

The main purpose of this paper is to investigate multitemporal land surface temperature (LST) changes by using satellite remote sensing data. The study included a real-time field work performed during the overpass of Landsat-5 satellite on 21/08/2011 over Salt Lake, Turkey. Normalized vegetation index (NDVI), vegetation condition index (VCI), and t...

An artificial neural network (ANN) model was developed for simulating water levels at the Sultan Marshes in Turkey. Sultan Marshes is a closed basin wetland located in the semi-arid Central Anatolia region of Turkey. It is one of the thirteen Ramsar sites of Turkey and a national park. Water levels at the Sultan Marshes showed strong fluctuations i...

This chapter presents the pre-results from an ongoing study that mainly focuses on the use of remote sensing data to investigate the climate change effects on water resources in the Konya Closed Basin Area (KCBA), Turkey. In this study, multitemporal Landsat images along with climatic data were used to explore the dimension of drought effects on wa...

This study aims to demonstrate the use of association analysis for discovering the relationships between stream flow and climatic variables in the Ki{dotless}zi{dotless}li{dotless}rmak River Basin in Turkey. Association analysis is a data mining technique that aims to discover rules in the form of A→B that may occur in large datasets with frequency...

Anomaly detection is a problem of finding unexpected patterns in a dataset. Unexpected patterns can be defined as those that do not conform to the general behavior of the dataset. Anomaly detection is important for several application domains such as financial and communication services, public health, and climate studies. In this paper, we focus o...

The objective of this study is to evaluate air pollution in Kayseri for the 1990-2007 period. The levels of sulfurdioxide (SO2) and particulate matter (PM) and have been evaluated for the 1990-2007 period by considering the limit values set by Air Quality Protection Regulation (HKKY), European Council (EC) and World Health Organization (WHO). Trend...

The Sultan Marshes in the Develi Basin, Anatolia, one of twelve internationally important wetlands of Turkey, have been severely affected by the construction of an irrigation project in 1988. Intensive use of surface and ground water in irrigation has caused more than a 1 m decline in water levels and has affected the wetlands' ecological character...

Sultan Marshes, an important ecosystem and wildlife refuge in the Develi Basin in Turkey, originally included two lakes and two freshwater marshes, with a total surface area of 176 km2, surrounded by wet meadows and salt steppes. The Develi Irrigation Project changed the Sultan Marshes severely starting in 1988 by diverting surface and ground-water...

Develi Basin is a semi-arid basin in central Turkey where water sustains both irrigated agriculture and an internationally important wetland, the Sultan Marshes. Agricultural and environmental changes in the Develi Basin have occurred since irrigation management was transferred in 1994 from a state authority (DSI) to irrigation associations (Kovalı...

Hydrologic changes in the Sultan Marshes ecosystem, a closed‐basin wetland in the semi‐arid Develi Basin in south‐central Turkey, are analyzed and related to intensification of irrigated agriculture in the catchment. Relationships between water‐level changes in the marsh, and inflows and outflows of surface water and groundwater are examined. Since...

A dynamic hydrologic model was developed for the Örtülüakar Marsh in Turkey to investigate the causes of water-level decreases observed since the 1990s and to explore potential remediation and sustainability options. Örtülüakar Marsh is a sub-system of the Sultan Marshes ecosystem, a large wetland complex consisting of freshwater marshes and salt-w...

A participatory environmental management plan was prepared for Tuzla Lake, Turkey. Fuzzy cognitive mapping approach was used to obtain stakeholder views and desires. Cognitive maps were prepared with 44 stakeholders (villagers, local decisionmakers, government and non-government organization (NGO) officials). Graph theory indices, statistical metho...