TY - JOUR T1 - Effects of environmental variables on Oligochaeta (Annelida) assemblages in Çardak Lagoon (Turkish Straits System) AU - Ateş, A. Suat AU - Dağlı, Ertan AU - Acar, Seçil PY - 2026 DA - April Y2 - 2026 DO - 10.3153/AR26010 JF - Aquatic Research JO - Aquat Res PB - Nuray ERKAN ÖZDEN WT - DergiPark SN - 2618-6365 SP - 107 EP - 117 VL - 9 IS - 2 LA - en AB - This study aimed to investigate the relationships between the abundance of the Oligochaeta assemblages in Çardak Lagoon, an area impacted by domestic pollutants. A total of 3 oligochaeta species [(Thalassodrilides gurwitschi (Hrabĕ, 1971), Thalassodrilides sp., and Oligochaeta sp.] were recorded. The peak abundance periods for these communities were determined to be spring and summer. Analysis of the environmental variables across the sampling seasons revealed that the anionic detergent level in the water and the percentage of gravel in the sediment exhibited the highest correlation with overall oligochaete abundance. 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