Tuğba Ongun Sevi̇ndi̇k

ORCID: 0000-0001-7682-0142
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Research Areas
  • Aquatic Ecosystems and Phytoplankton Dynamics
  • Aquatic Invertebrate Ecology and Behavior
  • Diatoms and Algae Research
  • Water Quality and Pollution Assessment
  • Environmental Toxicology and Ecotoxicology
  • Freshwater macroinvertebrate diversity and ecology
  • Marine and environmental studies
  • Marine Ecology and Invasive Species
  • Marine and coastal ecosystems
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Algal biology and biofuel production
  • Subterranean biodiversity and taxonomy
  • Fish Biology and Ecology Studies
  • Pesticide and Herbicide Environmental Studies
  • Fish Ecology and Management Studies
  • Analytical chemistry methods development
  • Advanced Nanomaterials in Catalysis
  • Porphyrin and Phthalocyanine Chemistry
  • Biocrusts and Microbial Ecology
  • Plant Ecology and Taxonomy Studies
  • Nanoparticles: synthesis and applications
  • Electrochemical sensors and biosensors
  • Essential Oils and Antimicrobial Activity
  • Marine Toxins and Detection Methods
  • Mercury impact and mitigation studies

Sakarya University
2015-2025

Istanbul Technical University
2021

Bolu Abant İzzet Baysal University
2021

Balıkesir University
2006-2010

Abstract In this study, littoral diatoms and environmental variables were sampled three times in 2017 (spring, summer, autumn) to determine the effect of salinity (SAL) altitude (ALT) on diatom assemblages (composition, distribution, species richness diversity) 12 lentic systems Western Mediterranean Basin. Due SAL ALT differences these systems, they distinguished under two groups (high elevated freshwater [HEF] hyposaline [HYP]). The Bray–Curtis Canonical Correspondence (CCA) analyses based...

10.1002/eco.2625 article EN Ecohydrology 2024-01-24

A new Fallacia cinariana sp. nov. is described from a unique extreme microenvironment in the highly calcareous Kaklık Cave, Pamukkale Travertines Western Anatolian Karst Region, Türkiye with (pH 8.2) rich waters. Valves of F. are small (<15 um), linear to linear-elliptic rounded ends. As type species for genus (F. pygmaea (Kützing) Stickle & D.G.Mann), axial area composed narrow raphe sternum and valve face slits/occlusions on either side, 500–900 nm length. The striae biseriate form...

10.11646/phytotaxa.694.2.5 article EN Phytotaxa 2025-03-19

ABSTRACT In this study, phytoplankton communities and environmental variables in 70 lentic systems Türkiye were analysed using samples collected from 2017 to 2019. The objective was evaluate how lake surface area (SUA) affects assemblages. categorized into three SUA groups: I (< 50 ha), II (50–500 ha) III (> 500 ha). results showed that both species composition dominant varied with SUA. Some preferred larger SUAs higher optima values. Phytoplankton biovolume increased SUA, particularly...

10.1002/eco.70031 article EN Ecohydrology 2025-03-01

Red macroalgae are the basis of many commercially important food, pharmaceutical and other industries. Research on these species has generally focused improving seaweed cultivation, developing new methods to extract useful compounds or identifying applications. In our study, biochemical contents (total protein, carbohydrate total phenolic substance) Pterocladiella capillacea algae collected from Black Sea were determined. addition, antioxidant activity P. extracted by Soxhlet...

10.22392/actaquatr.1600679 article EN Acta Aquatica Turcica 2025-05-14

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...

10.3906/bot-1510-22 article EN TURKISH JOURNAL OF BOTANY 2017-01-01

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...

10.1002/eco.2568 article EN Ecohydrology 2023-05-23

Tracking morphological variability of phytoplankton is a useful tool to better understand environmental changes. Highly dynamic systems such as reservoirs are convenient environments investigate the effects variables on morphology. However, fully mixing and trophic state functional group (FG) distribution, entire water column must be considered since integrated or sub-superficially collected samples, may not adequately represent structure. This idea was tested by analyzing vertical profiles...

10.1051/limn/2016040 article EN Annales de Limnologie - International Journal of Limnology 2017-01-01

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,...

10.1051/limn/2021012 article EN Annales de Limnologie - International Journal of Limnology 2021-01-01

The phytoplankton functional group (FG) concept has been successfully used to determine water quality states in both lake and river systems, but is not yet stressed regular studies reservoir environments. purpose of our study was estimate the ecological status temperate Çaygören Reservoir (2007-2009) using Q(r) FG composition metric, test whether it able follow main structuring physical chemical parameters studied. occurring coda were codon C (Cyclotella meneghiniana Kützing, Stephanodiscus...

10.3906/bot-1402-69 article EN other-oa TURKISH JOURNAL OF BOTANY 2015-01-01

Twenty-four new records for freshwater algae of Turkey were determined in a study conducted from February 2007 to January 2009 Çaygören Reservoir, Balıkesir, Turkey. Among these, 3 Cyanobacteria, Euglenophyta, 15 Chlorophyta, 1 Charophyta, Heterokontophyta, and was Dinophyta.

10.3906/bot-0906-56 article EN TURKISH JOURNAL OF BOTANY 2010-01-01

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...

10.1111/pre.12202 article EN Phycological Research 2017-11-28
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