Species composition of benthic fish fauna in the Sea of M armara, T urkey

Abstract

Summary In order to determine the present benthic fish fauna in the Sea of Marmara, sampling was conducted at a total of 10 stations for 2 weeks in August 2009, using a commercial twin beam trawling vessel with 18 and 36 mm stretched mesh sizes at the cod‐end. In addition, some physicochemical parameters that play important roles, such as temperature, salinity, dissolved oxygen, and pH, were measured for each station. As a result, 31 fish species from 23 families were found at a total of 10 stations in depths of 30–1000 m. At each station, the Shannon–Weaver diversity index, Simpson dominance index, species richness index, and evenness index were estimated. This study reports on species composition of the demersal fish catches in the Sea of Marmara for a preliminary assessment of the status of these fish communities.

Analysis of Demersal Fish Fauna off the Sea of Marmara, Turkey

“…Torcu Koç et al (2012) described 31 fish species using a beam trawl from 10 stations in the Sea of Marmara. The lower species richness in the study of Torcu Koç et al (2012) may be due to the limited operational depth range of beam trawls. However, in the present study, higher teleost fish species richness was found with increasing depth.…”

“…Since trawl fisheries is banned in the Sea of Marmara, commercial catches of demersal fish are caught by beam trawls and deep water gill nets. Therefore, information on demersal fish composition and spatial and temporal variations are limited (Gözenç et al, 1997;Eryılmaz, 2001;Torcu-Koç et al, 2012;Keskin et al, 2011). Beside, Eryılmaz and Meriç (2005), and Demirel and Gül (2016) were reviewed historical and earliear demersal fish records from the Sea of Marmara.…”

Feeding Habits of the Mediterranean Horse Mackerel

“…The Sea of Marmara comprises two different water masses from two different seas. Black Sea-sourced upper water masses vary between 50 and 75 m in thickness depending on the amount of incoming water from the Black Sea; water temperatures, especially seasonally, are between 6 o Cand 27 o C. Living organisms in the Sea of Marmara are not easily influenced by salinity variations, which can be in accordance with hypersaline waters of the Mediterranean Sea (35-39%o) and hyposaline waters of the Black Sea (16-18%o).But, as thermoklin stagnation arising from variations in temperature and salinity changes the chemical structure of the Sea of Marmara, ecological conditions of the sea vary at the same time (Karakulak et al 2000, Torcu et al 2012. As the southern Marmara in which Bandırma Bay placed is relatively larger and deeper, with open sea, and thefore, its structure possibly supplies a greater diversity of fish communities as T. Mediterraneus.…”

Growth Parameters and Reproductive Biology of Citharus linguatula (Linnaeus, 1758) from the Sea of Marmara (Turkey)

“…In this respect, C. linguatula keeps oneself a lot of from the polluted area (Northeastern part). Torcu Koç et al, (2012) were determined that 4.49% of the total demersal fish biomass of the Marmara Sea consisted of C. linguatula. In this study, C. linguatula constituted 0.1% of the total biomass.…”