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Öğe Beach litter contamination of the Turkish middle Black Sea coasts: Spatial and temporal variation, composition, and possible sources(Pergamon-Elsevier Science Ltd, 2022) Bat, Levent; Oztekin, Aysah; Ozturk, Dilara Kaya; Gurbuzer, Pinar; Ozsandikci, Ugur; Eyuboglu, Bora; Oztekin, Hasan CanMarine litter is one of the biggest environmental problems nowadays. Sinop, is located in the heart of Turkiye's Black Sea coast, has a small population, and is a popular fishing and tourist destination. In this study, marine litter amount, composition, and possible sources were investigated, and seasonal comparisons were made be-tween in Sinop beaches. Marine litter amount was found as 0.29-7.67 items.m(-2) and 3.46-49.09 g.m(-2) and beaches were classified as moderate to extremely dirty. Plastics were the highest ratio (88.14-98.46 %) and plastic pieces 2.5 > < 50 cm were the major litter type. The major possible litter source was improper waste disposal (33.36 %) and litter items originated from mainly land-based sources (74.13 %). The result of this study shows that there is a significant litter problem on the coasts. The solution of this problem can be possible to take rational measures against marine litter pollution with education and management policies.Öğe Diversity of benthic macroinvertebrates and water quality of Karasu Stream (Black Sea)(Ege Univ, Fac Fisheries, 2021) Cil, Eylem Aydemir; Ozbek, Murat; Yardim, Oztekin; Yildiz, Seray; Tasdemir, Ayse; Rasouli, Hamidreza; Gurbuzer, PinarThe study was conducted in Karasu Stream (Sinop Province, Black Sea Region of Turkey). The purpose of this study is, to determine the benthic macroinvertebrate composition of the stream, together with some of its environmental characteristics (water temperature, pH and dissolved oxygen) to evaluate the trophic level of the stream. Samplings of benthic macroinvertebrates and environmental variables were performed monthly at ten stations between February 2013 and January 2014. As a result, 18260 specimens were investigated and 175 taxa were determined. Chironomidae and Oligochaeta were the higher groups in terms of species richness with 48 and 38 taxa, respectively. The BMWP and ASPT indices indicate that all the stations belong to slightly polluted (Class II) or unpolluted (Class I) water quality levels.Öğe Elemental accumulation in the surficial sediment of Kesikkopru, cubuk II and Asartepe Dam Lakes (Ankara) and potential sediment toxicity(Taylor & Francis Ltd, 2021) Fikirdesici-Ergen, Seyda; Tekatli, Cagri; Gurbuzer, Pinar; ucuncu-Tunca, Esra; Ture, Hasan; Biltekin, Demet; Kurtulus, BedriIn this study, cubuk 2, Kesikkopru and Asartepe Dam Lake, were investigated. A total of 60 sediment samples were collected and the concentrations of 10 elements (Cu, Pb, Zn, Ni, Mn, Fe, Co, Cr, Al, As) were determined. The obtained findings were compared to the limit values for the sediment quality guidelines (SQGs) and were investigated using sediment assessment methods. The results indicate that the values for SQGs revealed that the concentrations of Ni and As should be emphasised. Toxic unit (TU) values showed that As and Ni together constitute 69.95-80.09% of the total toxic effect alone for all lakes. In addition, the Contamination factor (Cf) and Enrichment factor (EF) detected the concentration of As for Kesikkopru Dam Lake as being at a medium and higher accumulation levels, although the Geoaccumulation index (Igeo) detected that As leads to contamination below the medium level. When the total element accumulation was evaluated, no risk was detected for the lakes. Cluster analysis (CA) revealed quite different elemental profiles for 3 lakes. The strongest correlation between the elements was observed for Cu-Ni (r = 0.942) in cubuk 2, whereas cubuk 2 was the lake with the highest seasonal elemental variation among the lakes investigated.Öğe Evaluation of water and sediment quality of Inalti Cave (Northern Turkiye) by using multivariate statistical methods(Springer, 2023) Cil, Eylem Aydemir; Uncumusaoglu, Arzu Aydin; Ergen, Seyda Fikirdesici; Gurbuzer, PinarHeavy metals, which are among the important pollutants that threaten ecosystems, have been a particularly intriguing subject of accumulation studies. The present study aimed to reveal the water and sediment quality, pollution status, and their usability for living organisms in 10 stations for the first time in Inalti cave, which has two underground ponds. Concentrations of 9 heavy metals (Cu, Pb, Zn, Ni, Mn, Fe, Cd, Cr, Al) and 1 metalloid (As) were determined in samples taken. These results were compared to the limit values in Sediment Quality Guides (SQGs) and analyzed further using different sediment evaluation methods. SQG values revealed that the amounts of Cd and Ni are of concern. Examining the concentrations of metals in the water, the ranking by concentration was found to be Al > Cr > Pb > Cu > As > Mn and the elements were considered not to pose any environmental risk. The enrichment of detected Cd metal in the sediment is remarkable. In addition, ANOVA, Pearson's correlation analysis, principal component analysis (PCA), and hierarchical clustering analysis were carried out in order to make the obtained data easier to understand and interpret. While designing the most appropriate action plans for water management, more clear and understandable information can be obtained by using these methods and interpreting the raw data. In the cave, individuals belonging to the Niphargus genus, a member of the Malacostraca class, Niphargidae Family, were identified in the sediment.Öğe Towards a Sustainable World: Diversity of Freshwater Gastropods in Relation to Environmental Factors-A Case in the Konya Closed Basin, Turkiye(Mdpi, 2022) Gumus, Burcin Askim; Gurbuzer, Pinar; Altindag, AhmetThe Konya Closed Basin (KCB) in Turkiye plays a key role in agricultural production and freshwater supply. However, the basin is impacted by humanly derived nitrogenous compounds and toxic metals. Keeping the water quality at a potable level in the basin is compulsory. This study was part of a project yielding monitoring of water quality in KCB in accordance with the Water Framework Directive (2000/60/EC). Eleven stations, except Beysehir Lake and Mamasin Dam, were sampled for the first time for freshwater molluscs. Community structure indexes and multivariate statistical analyses were applied to determine the microhabitats of gastropods and their responses to environmental changes. The structure and distribution of gastropod assemblages differed depending on total phosphate, total nitrogen, dissolved oxygen, and pH. This study revealed that most of the gastropods in KCB are relatively tolerant to biodegradable pollution. However, there is a strong observed decline in population size requiring intensive future monitoring; measures have to be taken to preserve the remaining populations. Two endemic species need an urgent action plan to protect their habitats: Theodoxus anatolicus of celtik Canal and Bithynia pseudemmericia of Beysehir Lake; a re-assessment of their extinction risk according to the IUCN rules is needed (2022). The results of this study will be useful for comparison with future studies to document potential improvements or continued ecological regression in the quality of aquatic ecosystems in the watershed.Öğe Zooplankton Fauna of High Mountain Lake: Sarincof (camlihemsin, Rize, Turkey)(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2023) Gurbuzer, Pinar; Altindag, Ahmet; Tekatli, Gulsah; Tekatli, CagriIn this study, which carried out on Sarincof Lake on 13 July 2021, 27 species from Rotifera, 6 from Cladocera, and 3 from Copepoda, belonging to zooplankton groups were identified in a total of 36 species. Among the identified species, Rotifers were the dominant group with a rate of 51 %. This was followed by Copepoda 28.3 % and Cladocera 20.7 %, respectively. The identified species are the first record for Sarincof Lake, which is the subject of the study.
