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    Abundance and composition of marine litter around Gokceada Island (Northern Aegean Sea)
    (Michigan State Univ Press, 2016) Gonulal, Onur; Oz, Idil; Guresen, Sedat Ozan; Ozturk, Bayram
    Marine debris are frequently studied on beaches and occasionally in coastal waters, but links between these two environments have rarely been studied. Litter items were collected by hand in the Gokceada beaches supralittoral zone, consisting of sandy or rocky beaches, and collected from subtidal areas between 50-450m depth range on the continental shelf with bottom trawling. Collected litter were sorted and categorized by type, usage and origin. On the beaches, litter density varied from 0.1 to 22.1 items per 100 m(2). Plastic materials dominated the composition of waste materials (59%) followed by soft plastic, nylon (11.5%). Eight percent of litter was of foreign in origin coming from two countries (Greece and Bulgaria). Offshore, during 32 hauls only 12 items were collected, and the number of debris ranged from 0 to 1.6 items km(-2). Gokceada Island should be further monitored in order to develop regional marine litter management solutions.
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    New distributional record of Chelonibia testudinaria (Linnaeus, 1758) from the island of Gokceada, northern Aegean Sea, Turkey
    (Tubitak Scientific & Technological Research Council Turkey, 2016) Gonulal, Onur
    A total of 420 specimens of Chelonibia testudinaria (Linnaeus, 1758) were found on two dead loggerhead turtles (Caretta caretta) washed ashore on the island of Gokceada (northern Aegean Sea). The species is reported for the first time from the Turkish coast of the Aegean Sea and is the second record since 1982 for the Turkish Seas.
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    SPECIES DIVERSITY IN LENTIC, LOTIC, MARINE AND TERRESTRIAL BIOTOPES OF GOKCEADA SALT LAKE WETLAND (CANAKKALE, TURKEY)
    (Parlar Scientific Publications (P S P), 2018) Aslan, Herdem; Gonulal, Onur; Can-Yilmaz, Elif; Elipek, Belgin; Baytut, Ozgur; Tosunoğlu, Murat; Karabacak, Ersin
    This study was carried out to provide detailed information on species diversity and community structure of Gokceada Salt Lake Wetland (brook feeding the lake, neighboring sea and terrestrial area around the wetland). Aquatic species diversity (algae, invertebrates, and fish) at 9 different stations in freshwater, brackish water and marine ecosystems, and terrestrial species diversity (plants, amphibians, reptiles, birds and mammals) in the surrounding wetland were studied seasonally in 2016. A total of 195 taxa of terrestrial vascular flora and 134 species of aquatic flora (97 species of phytoplankton, 37 species of benthic algae); a total of 23 macrobenthic invertebrate taxa from the lake and 131 invertebrate species from the sea were identified. Also, 4 fish, 14 reptiles, 3 amphibians and 71 bird species were observed in the study area. While one species of phytoplankton was determined as a new record for the Turkish aquatic flora, a total of 71 marine invertebrate species were reported for the first time in the marine fauna of Gokceada. The obtained data will not only provide a solid basis to expand the understanding of the island's ecosystem, but also will serve as an important tool in the action plans for wetland conservation.
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    Wanted dead or alive: Corallium rubrum (Cnidaria: Anthozoa) on the coasts of Turkey
    (Cahiers De Biologie Marine, 2018) Cinar, Melih Ertan; Gonulal, Onur; Ozturk, Bayram
    The present paper deals with the occurrence of the red coral Corallium rubrum along the coasts of Turkey. Dead colonies of the species were found in the northern Aegean (one location in Gokceada) and Levantine Seas (three locations) between 45 and 110 m depths, and living colonies were only observed in the northern Aegean Sea (one location in Gokceada) at 50 m depth. The maximum height and basal diameter of dead skeletons of the specimens from Gokceada were measured as 9.6 cm and 8.4 mm, respectively. The present paper extended the distributional range of C. rubrum within the Mediterranean Sea to Anamur, the eastern point in its distribution.