A5041908071- Aquatic Ecosystems and Phytoplankton Dynamics
- Diatoms and Algae Research
- Aquatic Invertebrate Ecology and Behavior
- Environmental Toxicology and Ecotoxicology
- Water Quality and Pollution Assessment
- Freshwater macroinvertebrate diversity and ecology
- Pesticide and Herbicide Environmental Studies
- Marine and coastal ecosystems
- Pharmaceutical and Antibiotic Environmental Impacts
- Plant Ecology and Taxonomy Studies
- Nanoparticles: synthesis and applications
- Marine Ecology and Invasive Species
- Marine and environmental studies
- Porphyrin and Phthalocyanine Chemistry
- Algal biology and biofuel production
- Aquatic and Environmental Studies
- Electrochemical Analysis and Applications
- Synthesis and Biological Evaluation
- Plant Stress Responses and Tolerance
- Mercury impact and mitigation studies
- Biocrusts and Microbial Ecology
- Marine Toxins and Detection Methods
- Fish Biology and Ecology Studies
- Insect Pest Control Strategies
- Marine Biology and Environmental Chemistry
Sakarya University
2014-2024
Istanbul Technical University
2021
Abstract In order to determine the ecological status of surface waters different types in a particular ecoregion, reference conditions for each type should be identified compare with observed conditions, as suggested by Water Framework Directive (WFD). this study, 36 candidate river sites Sakarya Basin (Türkiye) were sampled three times 2018, and biological assessment these was evaluated using 18 diatom indices. addition, nine environmental variables also combined epilithic diatoms. Based on...
The aim of this research was to compare the phytoplankton structure on basis environmental variables and test Q assemblage index based functional groups in two shallow Mediterranean lakes [Lake Taşkısığı (LT) Lake Little Akgöl (LLA)] north Turkey. Variations parameters were analyzed monthly at stations each lake between January 2013 December 2013. We showed that total phosphorus (TP) values vital shaping biomass eutrophic LLA. Nitrate-nitrogen (NO3-N), TP, zmix/zeu, macrophyte coverage are...
It is important to determine the water quality of creeks in Lake Sapanca basin since it used for drinking supply. For this purpose, environmental parameters and diatom assemblages as biological components were investigated ecological status eight with monthly intervals between March 2015 February 2016. During studied period, 19 taxa increased their relative abundance higher than 30% at least one sample showed a different seasonal pattern. Main nutrients [(nitrate-nitrogen, orthophosphate,...
SUMMARY In this study, we have analyzed superoxide dismutase (SOD), ascorbate peroxidase (APX) and glutathione reductase (GR) activities, biomass accumulation chlorophyll‐ a content in the Arthrospira platensis ‐M2 strain grown at different concentrations of zinc (Zn), tin (Sn) mercury (Hg). We found that there is close relationship between A. as result Zn, Sn Hg exposures. was to be most toxic heavy metal among others because continious inhibition both 500 1000 μg mL −1 after third day...
Abstract The aim of this study was to determine the spatial and temporal variation phytoplankton water quality in response hydrological regime an isolated floodplain lake (North Mollaköy Lake) Sakarya River. Variations composition, biomass functional groups environmental parameters were monthly analyzed sub-surface samples collected from pelagic zone at four stations July 2012 June 2013. A total 109 taxa identified, species which contributed most grouped into 14 (FGs). distribution FGs...
Turkish lakes which have different morphometry and hydrology, a great potential that supports distinct algal diversity as result of climate types geographical variation (latitudinal, longitudinal, altitudinal gradients). However, the flora Turkey has not been completed, number new taxa increased due to studies in Turkey. This study aims describe planktonic for freshwater flora. A total 330 Chlorophyta, 164 Cyanobacteria 187 Euglenozoa were determined conducted from 2017 2019 275 25 river...
Although it is known that organophosphate insecticides are harmfull to aquatic ecosystems, oxidative damages caused by Dimethoate and Chlorpyrifos not studied on Arthrospira platensis Gomont. In this study, various (0-150 µg mL-1) (0-250 concentrations were added the culture medium in laboratory evaulate growth rate, chlorophyll-a content antioxidant parameters of A. platensis. Optical Density (OD560) decreased compared control for seven days both pesticide applications. Superoxide dismutase...
In this study, we have analyzed the effect a newly synthesized water-soluble alpha tetra-substituted zinc phthalocyanine (Pc) compound on superoxide dismutase (SOD), ascorbate peroxidase (APX) and glutathione reductase (GR) activities biomass accumulation in Arthrospira platensis-M2 strain to test whether could be used as an algaecide or not. We found that lower concentrations (3 μg mL[Formula: see text] 6 of Pc were not toxic algae cells, indicated by enduring during study (7 days). Higher...
The transport of pesticides from application areas to other results in pesticide contamination and this sort has led unexpected environmental problems worldwide. It is important determine the responses phytoplanktonic organisms these chemicals for an understanding effects on aquatic ecosystems. In study, Arthrospira platensis Gomont cyanobacteria were exposed different concentrations cypermethrin (0-50 µg mL-1) deltamethrin (0-2 mL-1). Changes chlorophyll-a concentration, absorbance OD560,...
Azadirachtin (Aza) used as insecticide due to inhibiting growth of insects and preventing them from feeding on plants. To understand the effects contamination this phototrophs, determine responses these organisms against insecticides are extremely important in understanding how ecosystem is affected. In study, chlorophyll- a amount, OD 560 antioxidant parameters (total SOD, APX, GR, Proline, MDA H 2 O ) were determined order effect Aza Arthrospira platensis Gomont. was applied between 0–20...
In this study, chlorophyll-a amount, OD 560 and antioxidant parameters (total SOD, APX, GR, MDA, H2O2 Proline) were determined in order to understand the effects of Thiacloprid Imidacloprid on Arthrospira platensis Gomont. Both applications showed significant reductions growth rate content A. cultures with dose-dependent manner when days concentrations compared each other. SOD activity significantly decreased application while caused a increase only at 75 µg mL-1 concentration. APX increased...
<title>Abstract</title> Spectrophotometric methods are frequently used to monitor growth and development in algae cultures of toxicity studies. Chlorophyll-<italic>a</italic>measurement is one the most important parameters determining cyanobacteria cultures. In this parameter, primarily extraction with solvents daily measurements should be carriedout during study. The use method causes both labor material consumption. Since chlorophyll-<italic>a</italic>content related doubling time initial...
Abstract This study explores the activity of total superoxide dismutase (SOD), ascorbate peroxidase (APX) and glutathione reductase (GR), biomass accumulation chlorophyll a content in Scenedesmus ellipsoideus Chodat grown under conditions varying zinc (Zn) concentrations. In addition, different SOD isozymes (MnSOD, FeSOD CuZnSOD) was measured separately to determine intracellular extent oxidative stress resulting from Zn toxicity. We found that MnSOD induced by lower concentration (2 μg ml...
The present study aimed to contribute the algal flora of Türkiye by Bacillariophyta (diatom) as new records for Turkish freshwater. Phytobenthos and phytoplankton were sampled three times (spring, summer, autumn) a year between 2017 2019. Samples collected with water sampler from depths, samples diatoms obtained epiphytic in littoral zone lakes. However, if macrophytes absent, epilithic or epipelic Also, phytobenthos preferred rivers. stones sampled. During studied period, total 895 diatom...
In this study, a Cd(II) complex was synthesized using 8-hydroxyquinoline and thiocyanate as the ligands structurally characterized with combination of FTIR, 1H-NMR, 13C-NMR, UV-vis, MS spectral data. Then, genotoxic effects prepared were investigated. Genotoxic properties dimeric 8-hydroxyquinolinthiocyanatoCd(II) [Cd2(8Q)2(SCN)2] drug raw material analyzed in human peripheral blood lymphocytes. Concentrations 1, 2, 4, 6, 8 μg/mL used for 24 48 h durations. significantly increased...