Gürkan, Yaprak
Yüksek, Ahsen
Tolun, Leyla
Tuğrul, Süleyman
In 7 different region which represent most used harbors, ports and fishing shelters in the Sea of Marmara and Black Sea in Turkey coasts. Ecological Quality Status was assesed by sampling soft -bottom macrozoobenthos from 22 stations in 2014.


The trophic and fishery impact of invasive Nemipterus randalli (Russell, 1986) in the northeastern Mediterranean Sea
Akgün, Yağmur; Bilgin, Cemal Can; Akoğlu, Ekin; Department of Biology (2022-8-31)
The Eastern Mediterranean Sea is one of the most invaded marine ecosystems under the impact of Lessepsian species which migrated from the Red Sea to the Mediterranean Sea after the construction of the Suez Canal. The impacts of Lessepsian species on the indigenous fish and fisheries can be both positive and negative. This study aimed to delineate the commonly seen Lessepsian species Randall’s threadfin bream (Nemipterus randalli)’s impact on the food web and fishery dynamics besides current ecosystem health...
The distribution of man-made and naturally produced halocarbons in a double layer flow strait system
Fogelqvist, E; Tanhua, T; Basturk, O; Salihoglu, I (1996-08-01)
The Bosphorus Strait, which connects the Black Sea and Mediterranean Sea via the Marmara Sea, is characterised by two distinct water masses. The upper layer consists of low density Black Sea water (sigma-t 10-11) flowing southward, and it is underlain by high density water (sigma-t > 28) of Mediterranean origin flowing northward. The sharp density gradient between the two layers is due to the difference in salinities. Here we report measurements on a suite of low molecular weight halocarbons together with b...
Elemental composition of seston and nutrient dynamics in the Sea of Marmara
POLAT, ÇOLPAN; Tuğrul, Süleyman; ÇOBAN, YEŞİM; SALİHOĞLU, İLKAY (1997-01-01)
The Sea of Marmara, an intercontinental basin with shallow and narrow straits, connects the Black and Mediterranean Seas. Data obtained during 1991-1996 have permitted the determination of the elemental composition of seston in the euphotic zone and the N:P ratio of the subhalocline waters of the Marmara Sea. Since primary production is always limited to the less saline upper layer (15-20 m), of the Marmara Sea, the subhalocline waters of Mediteranean origin are always rich in nutrients (NO3 + NO2 = 8-10 mu...
What is the Impact of Lessepsian Species on Eastern Mediterranean Fisheries?
Lefkaditou, Evgenia; Abdelaty, Mohamed; Bariche, Michel; Corsini-Foka, Mariolina; Dimech, Mark; Economidis, Panagiotis; Gücü, Ali Cemal; Kalogirou, Stefanos; Konnaris, Kostas; Lahouf, Imad; Madi, Abdalnaser; Majdalani, Samir; Mahmoud, Hatem Hanafy; Michailidis, Nikolas; El Mokdad, Dahej; Nader, Manal; Qamheyih, Mohamed; Orsi-Relini, Lidia; Pagiatas, Giorgos; (2011-10-29)
The migration of Lessepsian species, which was the result of the opening of the Suez Canal in 1869 and further facilitated by human activities and environmental conditions, seems to play a key role for fisheries particularly in the Levant basin. However, there is still lack of accurate data for most of the Lessepsian species in order to evaluate their positive or negative effect to the fisheries catches and local fish stocks. The Project "Scientific and Institutional Cooperation to Support Responsible Fishe...
The effect of environmental conditions on the distribution of eggs and larvae of anchovy (Engraulis encrasicolus L.) in the Black Sea
Kıdeyş, Ahmet Erkan; Bingel, Ferit; Niermann, Ulrich (1999-12-01)
Recent events in the Black Sea have had a severe impact on all compartments of the ecosystem, including ichthyoplankton. The distribution of eggs and larvae of the anchovy, the major commercial fish species, was investigated in relation to ambient conditions in the southern Black Sea during July 1992, August 1993, and June-July 1996. Average highest egg and larva numbers were observed in June-July 1996, Ichthyoplankton distribution was closely connected with the hydrography. Besides surface temperature and ...
Citation Formats
Y. Gürkan, A. Yüksek, L. Tolun, and S. Tuğrul, “THE IMPACT OF HARBOR USE ON ZOOBENTHOS,” 2016, vol. 41, Accessed: 00, 2021. [Online]. Available: