Yazar "Buyukates, Yesim" seçeneğine göre listele

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    Exotic Polychaetes of a Sewage Pollution Influenced Lagoon (cardak Lagoon, Turkish Straits)
    (MDPI, 2023) Dagli, Ertan; Ates, Abdullah Suat; Acar, Secil; Buyukates, Yesim; Dogan, Alper; Bakir, Ahmet Kerem
    This paper includes three exotic polychaeta species, Hydroides dianthus (Verrill, 1873), Polydora cornuta Bosc, 1802, and Pseudopolydora paucibranchiata (Okuda, 1937), found during benthic samplings in cardak Lagoon (Turkish Straits). The sampling was collected from the sandy and silty bottoms known to be polluted by sewage discharges. A total of 45 specimens of exotic polychaetes (H. dianthus: 1; P. cornuta: 4; P. paucibranchiata: 40) were found. The correlation values between the annual average values of the nutrients and the polychaeta abundance showed that the highest positive relationships with the abundance were between sand content, total phosphate, and pH. P. cornuta was the most observed species with a frequency index value of 75%, while H. dianthus was represented with a single species in the study area. Albeit the previous studies, P. paucibranchiata was observed most abundantly in the sampling station having low organic matter amounts. The study showed that opportunistic polychaetes observed in cardak Lagoon mostly preferred organically poor sediments.
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    The Relationship of Bristle Worm, Protodorvillea kefersteini (McIntosh, 1869) (Eunicida, Dorvilleidae) Abundance with Environmental Variables in Çardak Lagoon (Turkish Straits) Exposed to domestic Discharge
    (Istanbul Univ Press, Fac Aquatic Sciences, 2024) Dagli, Ertan; Ates, A. Suat; Acar, Secil; Buyukates, Yesim
    This study presents the correlations between opportunistic polychatea, Protodorvillea kefersteini (McIntosh, 1869) abundance, and environmental variables in cardak Lagoon. Samplings were carried out on the bottoms using a 30x30 cm quadrate seasonally between 1 and 1.8 m depths of seven sampling points in October 2018, February, April, and June 2019. A total of 1094 specimens belonging to P. kefersteini were collected. Environmental variables such as gravel content in sediment, pH, and salinity levels in the water had the highest correlations with the abundance through the sampling periods. Considering the sampling points, the highest correlation value was between water salinity and the abundance. Sediment gravel content, pH, salinity, temperature, anionic surfactant levels, and NO2+NO3 were major environmental variables affecting P. kefersteini abundance in the study area spatially and temporally.
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    Temporal and spatial effects of environmental variables on crustacean communities in cardak Lagoon (Turkish Straits System) under the influence of domestic pollution
    (Springer, 2023) Ates, Abdullah Suat; Mulayim, Aysegul; Bakir, Ahmet Kerem; Acar, Secil; Buyukates, Yesim; Dagli, Ertan; Dogan, Alper
    This study presents the temporal and spatial effects of domestic pollution on crustacean assemblages in a protected area, cardak Lagoon (Turkish Straits System). The samplings were performed from sandy and mud (silt + clay) bottoms between 1 and 1.8 m depths in October 2018, February, April, and June 2019. A total of 6920 specimens and 26 species (1 Isopoda, 1 Tanaidacea, 2 Mysidacea, 3 Cumacea, 5 Decapoda, 14 Amphipoda) belonging to crustaceans was found. Highest crustacea abundances were in autumn and winter. Considering the environmental variables, NO2 + NO3 (mg L- 1) and COD (mg L- 1) levels in the water had the highest correlations with abundance for the sampling periods. According to sampling points, the highest correlation value was found between anionic detergent content in the water and the abundance. Crustacean community structure was modified by environmental variables of anthropogenic origin at a higher level. Oxygen, oxygen reduction potential, NO2 + NO3, total nitrogen, chemical oxygen demand and anionic surfactant levels in water and sediment sand content % were major environmental variables affecting the crustacean abundance in the study area temporally.