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Öğe Benthic invertebrate fauna of Urla Harbour (Izmir Bay, Aegean Sea) and its vicinity(Ege Univ, 2007) Aydin, Ozden; Onen, Mesut; Dogan, Alper; Dagli, Ertan; Sezgin, Murat; Katagan, Tuncer; Ozturk, BilalIn order to determine benthic invertebrate fauna of Urla Harbour and its vicinity, four samplings were performed at 8 stations between February 2001 and December 2001. As a result, 283 species and 14492 individuals belonging to 8 systematic groups were determined. Seasonal fluctuations at the stations were examined and conspicuous seasonal changes at the stations 2 and 3, because of pollution in the harbor, were observed.Öğe First Record of Ophelia bicornis Savigny in Lamarck, 1818 (Polychaeta: Opheliidae) from the Turkish Coast of the Black Sea (Sinop Peninsula) with Ecological Features(Central Fisheries Research Inst, 2015) Dagli, Ertan; Sahin, Guley Kurt; Sezgin, Murat; Cengiz, ZeynepThe present paper deals with ecological and morphometric features of Ophelia bicornis Savigny in Lamarck, 1818 collected monthly from the Sinop Peninsula (Black Sea, Turkey) between August 2009 and July 2010 from 4 stations. This study aimed to report the polychaete for the first time from the Turkish coast of the Black Sea and to determine the population density of O. bicornis on the coasts of the Sinop Peninsula. A total of 699 individuals of O. bicornis were collected. The maximum and minimum density was counted at station A in autumn (October, November, respectively). The female individuals of O. bicornis were recorded between May and October. The regression formula for the length (mm)-weight (g) relationship was found to be W=0.0002xTL(2.11), indicating that the growth for O. bicornis is allometric. The statistically significant correlation between percentages of coarse sand and number of individuals and biomass of O. bicornis were estimated.Öğe Macrozoobenthic community structure of Igneada region in Turkey (the southwestern Black Sea)(Walter De Gruyter Gmbh, 2017) Kurt-Sahin, Guley; Sezgin, Murat; Unluer, Fikriye; Ozturk, Bilal; Cavdar, Ertan; Dagli, ErtanThe present study deals with macrozoobenthic species on soft substrates in Igneada (Turkish coast of the Black Sea). Benthic samples were collected seasonally at three stations between 2012 and 2013. A total of 155 species belonging to seven taxa (Turbellaria, Nemertea, Nematoda, Oligochaeta, Polychaeta, Crustacea, Phoronida, Mollusca, Hemichordata) were identified. Of these, four species are new records for the Black Sea fauna, 15 species are new to the Turkish coast of the Black Sea; and two species are new to the Turkish Seas. Polychaeta was the most representative taxon in the study area - it was represented by 58 species (39% of the total number of species). In terms of the number of individuals, Mollusca were the dominant taxon in all seasons (82% of the total number of individuals). The most dominant species were Bittium reticulatum and Caecum trachea and the most frequent species were Micronephtys stammeri, B. reticulatum and Chamelea gallina.Öğe New records of polychaetes (Annelida) from the Black Sea(Cahiers De Biologie Marine, 2019) Kurt-Sahin, Guley; Cinar, Melih Ertan; Dagli, ErtanThe present paper includes four new records of polychaete species to the marine fauna of the Black Sea: Malmgrenia lilianae, Salvatoria cf. dolichopoda, Polydora agassizi and Aricidea (Acmira) simonae. In addition, four species, namely Pisione remota, Pterocirrus macroceros, Polydora cornuta and Saccocirrus papillocercus, are new records for the Black Sea coast of Turkey. The morphological and distributional features of the species are given.Öğe Spatial and temporal variations of soft bottom polychaetes of Sinop Peninsula (southern Black Sea) with new records(Tubitak Scientific & Technological Research Council Turkey, 2017) Kurt Sahin, Guley; Dagli, Ertan; Sezgin, MuratThe 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 (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 cm(2), 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 (15,125 ind. m(-2)). The correlation between polychaete community and environmental variables was strongly high (r = 0.91) according to canonical correlation analysis. The main factors affecting the polychaete assemblages were depth and sediment texture.Öğe Spatial distribution pattern of macroinvertebrates associated with the black mussel Mytilus galloprovincialis (Mollusca: Bivalvia) in the Sea of Marmara(Elsevier, 2020) Cinar, Melih Ertan; Bakir, Kerem; Ozturk, Bilal; Dogan, Alper; Acik, Sermin; Kirkim, Fevzi; Dagli, ErtanThe present study deals with benthic community structures of mussel beds (Mytilus galloprovincialis) in the Sea of Marmara, including the canakkale and Istanbul Straits. The Sea of Marmara's mussel beds were mainly formed by small-sized mussel individuals (shell length < 4 cm). Macrobenthic species associated with the mussels support high diversity in the region, comprising 184 species belonging to 11 taxonomic groups. The annelids (38% of total number of species) were the most diverse group and arthropods (48% of total number of individuals) the most abundant. Motile species numerically dominated mussel beds at stations, while epibiont fauna were relatively low in terms of number of species and abundance. Five different species assemblages were identified in the region, which appeared to be mainly influenced by some biotic (e.g. mussel biomass, alien species) and abiotic (e.g. salinity) factors. The assemblages were mainly characterized by having high abundances of three crustacean (Jassa marmorata, Hyale schmidti and Melita palmata) and one polychaete (Platynereis dumerilii) species. Seven alien species were found at stations, of which the small-sized anthozoon Diadumene cincta accounted for 86% of total number of individuals of alien species.Öğe Within-year spatio-temporal variation in meiofaunal abundance and community structure, Sinop Bay, the Southern Black Sea(Walter De Gruyter Gmbh, 2016) Urkmez, Derya; Sezgin, Murat; Karacuha, Melek Ersoy; Oksuz, Ibrahim; Katagan, Tuncer; Bat, Levent; Dagli, ErtanThe first comprehensive meiobenthos study was carried out in Turkey, the Southern Black Sea (Sinop) from August 2009 to July 2010. Sediment samples were collected monthly at eight stations at 3 m and 10 m water depths located on four transects. A metal push core sampler (surface area 12.56 cm(2) and length 10 cm) was used to obtain the material. Meiofaunal abundance and composition were examined. The results revealed that the meiofaunal community consists of twenty five higher taxonomic groups. Four groups dominated the community: Nematoda, Harpacticoida, Foraminifera and Polychaeta. Spatial and temporal meiofaunal abundance fluctuated among stations and over time.
