Spatial and temporal variations of soft bottom polychaetes of Sinop Peninsula (southern Black Sea) with new records

Authors : Güley Kurt ŞAHİN, Ertan DAĞLI, Murat SEZGİN

Pages : 89-101

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The soft bottom polychaete community was examined seasonally at eight stations between August 2009 and July 2010. A total of 76 species belonging to 27 families were identified in the Sinop Peninsula insert ignore into journalissuearticles values(southern Black Sea);, of which 23 species are new records for the Black Sea fauna and 7 species for the Black Sea coast of Turkey. Syllidae was the best represented family in the research area and contributed 15.78% of the total fauna. The most dominant and frequent species were Micronephthys stammeri and Protodorvillea kefersteini in the study area. Community parameters varied significantly among stations and seasons; number of species ranged from 1 to 21 per 400 cm2, density from 25 to 16,700 ind. m-2, Shannon-Wiener diversity index value from 0 to 3.4, and Pielou evenness index value from 0 to 0.98. The highest population density was recorded at station C1 in winter, where P. kefersteini was the most dominant species insert ignore into journalissuearticles values(15,125 ind. m-2);. The correlation between polychaete community and environmental variables was strongly high insert ignore into journalissuearticles values(r = 0.91); according to canonical correlation analysis. The main factors affecting the polychaete assemblages were depth and sediment texture.
Keywords : Polychaeta, soft bottom, new records, environmental factors, Sinop Peninsula, Black Sea