Graduate School of Marine Sciences, Thesis

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Thesis (162)

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Author
Akçay, İsmail (3)
Akkuş, Gizem (2)
Akoğlu, Ekin (2)
Avşar, Dursun (2)
Gücü, Ali Cemal (2)

Subject
Natural Sciences (34)
Black Sea (10)
Engineering and Technology (7)
Marine resources. (7)
Fishes (6)

Date Issued
1980 - 1989 (37)
1990 - 1999 (32)
2000 - 2009 (30)
2010 - 2019 (42)
2020 - 2024 (10)

Item Type
Master Thesis (119)
Ph.D. Thesis (43)

Recent Submissions

Greenhouse Gas Dynamics of Saline Lakes: A Study on the Impacts of Environmental Change Yılmaz, Gültekin; Özkan, Korhan; Beklioğlu, Meryem; Department of Oceanography (2024-10-03) Saline lakes, increasingly impacted by climate change and land use, play an important role in the global carbon and nitrogen cycles. This thesis study examined the complex factors influencing greenhouse gas (GHG) emissions...
THE EFFECTS OF MARINE PROTECTED AREAS ON THE ECOSYSTEM IN THE EASTERN MEDITERRANEAN Eşkinat, Deniz; Gücü, Ali Cemal; Department of Marine Biology and Fisheries (2024-9-4) Marine Protected Areas (MPAs) are primary tools for restoring degraded marine ecosystems affected by various stressors. Although numerous studies have acknowledged and demonstrated their effectiveness, their effects and ef...
THE FUTURE IMPACTS OF CLIMATE CHANGE ON FISH STOCKS IN THE BLACK SEA: AN END-TO-END MODEL APPROACH Uysaler, Hacer Buse; Akoğlu, Ekin; Department of Marine Biology and Fisheries (2024-1-23) The warming of the Black Sea significantly affects the marine ecosystem, fish populations, and livelihoods. Comprehensive models that make assessments about the past, present, and predictions concerning future changes of m...
ESTIMATING SUBMARINE GROUNDWATER DISCHARGE IN THE CILICIAN BASIN BY RADIOACTIVE ISOTOPE TRACERS AND HYDRODYNAMIC MODELING Kuyumcu, Burak; Akoğlu, Ekin; Özkan, Korhan; Department of Oceanography (2023-7-26) The Northeastern Levantine Sea has an oligotrophic nature, however, rising agricultural and industrial activities along its coasts pose a major eutrophication risk. There is a urgent necessity to identify and assess coasta...
Seafloor Iron Mobilization Across The Deep-Water Redox Gradients Of The Black Sea And The Sea Of Marmara Alımlı, Nimet; Yücel, Mustafa; Department of Chemical Oceanography (2022-8) Iron is one of the key elements in the ocean which has wide interconnections with other essential elements (i.e., C, N, P, O, Mn, S) and fundamental mechanisms (i.e., photosynthesis, respiration, chemosynthesis). The criti...
INVESTIGATION OF BACTERIAL COMMUNITY COMPOSITION IN OXIC AND ANOXIC SEDIMENT CORES ALONG REDOX GRADIENTS OF THE BLACK SEA Esti, Mertcan; Yücel, Mustafa; Karahan, Arzu; Department of Oceanography (2022-5-18) Biogeochemical cycles are essential for the maintenance of life on Earth. However, little is known about the underlying processes, which hinders the estimation of future states of cycles in a changing environment. Microorg...
COASTAL EUTROPHICATION AND HYPOXIA UNDER FOCUS: REDOX DEPENDENT BENTHIC NUTRIENT FLUXES ACROSS SEA BOUNDARIES IN THE NORTHEASTERN MEDITERRANEAN AND MARMARA SEA Akçay, İsmail; Yücel, Mustafa; Department of Oceanography (2022-2-8) Seafloor biogeochemistry can dramatically shift in response to deoxygenation and eutrophication-driven organic carbon production. In such conditions, biogeochemical cycling of key nutrients can be highly coupled to oxygen ...
GEOCHEMISTRY OF DEEP-SEA HYDROTHERMAL VENT FLUIDS FROM BROKEN SPUR, RAINBOW AND LOST CITY HYDROTHERMAL VENT FIELDS, MID-ATLANTIC RIDGE Sevgen, Serhat; Yücel, Mustafa; Department of Oceanography (2021-5-21) Mid- Atlantic Ridge (MAR) is a very special tectonic environment which contains compositioanlly distinct hydrothermal vent fields as a result of its slow spreading character. Considering the increasing efforts on understan...
COASTAL VULNERABILITY ASSESSMENT FOR MERSIN AND İSKENDERUN BAYS, NORTHEASTERN MEDITERRANEAN Aykut, Fahri; Tezcan, Devrim; Department of Oceanography (2021-2) Coasts are sensitive and dynamic areas against natural influences such as waves, winds, currents, and tides. Pressure of human activities also accelerate the change of coasts. Climate change and global sea level rise are o...
Mitochondrial and nuclear dna phylogeographies for two botryllid ascidian species from the north-eastern mediterranean sea Öztürk, Esra; Karahan, Arzu; Department of Marine Biology and Fisheries (2020-10-22) With approximately 3000 species, ascidians are the largest tunicate group in the world seas. Botrylloides belongs to the genera of the worldwide spread Botryllid ascidians. In the Eastern Mediterranean coasts, a total of s...
DISTRIBUTION OF CETACEAN AND THEIR FORAGING HABITATS IN THE BLACK SEA Başkır, Saba; Gücü , Ali Cemal; Department of Chemical Oceanography (2019-10-04) Cetacean hunting was banned in Turkey in 1983. In the following decades, as the ecological shifts in the Black Sea occur, over-increase in the cetacean populations were hypothesized as the cause of the decline in economica...
EFFECT OF TEMPERATURE ON THE OCCURRENCE OF THREE MOST ABUNDANT SMALL PELAGIC FISH SPECIES IN THE SOUTHERN BLACK SEA Bilir, Batıkan; Gücü , Ali Cemal; Department of Marine Biology and Fisheries (2019-10-04) It is known that the temperature change in water resulted by the strength and direction of cold winds varying from year to year has an effect on the distribution of small pelagics which have yearly migration cycles in semi...
INVESTIGATING PELAGIC FISH LARVAL DISPERSAL AND ECOLOGIC CONNECTIVITY IN THE BLACK SEA USING LAGRANGIAN DRIFTER MODELING Çağdaş, Bulut; Fach Salihoğlu, Bettina; Department of Oceanography (2019-9-24) In order to understand fish population dynamics, understanding the physical interaction of the current systems with pelagic fish larvae is necessary. Using a Black Sea circulation model output to undertake Lagrangian drift...
INVESTIGATING MESOSCALE PHYSICAL PROCESSES FOR VERTICAL AND HORIZONTAL TRANSPORT IN THE BLACK SEA WITH THE IMPLEMENTATION OF A HIGH-RESOLUTION CIRCULATION MODEL Sadighrad, Ehsan; Salihoğlu , Bettina Fach; Department of Oceanography (2019-9-24) A three-dimensional, high resolution ocean model, the Nucleus for a European Model of the Ocean (NEMO) is set up for the Black Sea. It is used to simulate the general circulation of the Black Sea and investigate interannua...
INVESTIGATING MARINE MICROBIAL REACTIONS USING NOVEL APPROACHES: GENETICS AND BIOGEOCHEMISTRY Deliceırmak, Selin; Salihoğlu, Barış; Arkın, Sinan; Department of Marine Biology and Fisheries (2019-5-28) Despite the many important roles, they play, bacteria are one of the least known components of the marine biogeochemical cycles. In order to determine the temporal dynamics of the species composition, and active metabolism...
ELUCIDATING THE IMPACT OF DISPERSAL ON THE PERSISTENCE OF SMALL COLONIES OF ENDANGERED MEDITERRANEAN MONK SEAL Kurt, Merve; Gücü, Ali Cemal; Department of Marine Biology and Fisheries (2019-02-01) Evaluation of the breeding and resting habitats indicated that the most prominent threat is the construction of industrial infrastructure; it is followed by tourism, and construction of houses and roads. The consequences o...
ESTIMATING THE EFFECT OF KRILL ON THE SOUTHERN OCEAN ECOSYSTEM FUNCTIONING Karakuş, Onur; Fach Salihoğlu, Bettina; Salihoğlu, Barış; Department of Oceanography (2018-11-19) In this study, a three dimensional, coupled ocean ecosystem model (FESOMREcoM2) is used to investigate the impact of krill on the ecosystem dynamics of the Southern Ocean in modeling studies. A new, second zooplankton grou...
A 15-YEAR CLIMATOLOGY OF AEROSOL OPTICAL AND PHYSICAL PROPERTIES AND NEAR-REAL TIME MEASUREMENTS OF WATER-SOLUBLE IONS IN PM2.5 AND THEIR PRECURSOR GASES IN THE ATMOSPHERE OVER THE EASTERN MEDITERRANEAN Tutsak, Ersin; Koçak , Mustafa; Department of Oceanography (2018-7-26) Long-term aerosol optical and micro physical properties obtained from AERONET sun/sky radiometer situated at the rural coastal site of Eastern Mediterranean between January 2000 and December 2014 were analyzed. Moreover, c...
MICROPLASTIC POLLUTION IN SEAWATER, SEDIMENT AND GASTROINTESTINAL TRACT OF FISHES OF THE NORTH-EASTERN MEDITERRANEAN SEA Gökdağ, Kerem; Kıdeyş, Ahmet Erkan; Department of Marine Biology and Fisheries (2017-12-28) Marine litter and microplastic pollution is a growing problem for the world and Turkish seas. In this study, the levels of microplastics in surface water, water column, sediment as well as in fish digestive system from the...
NATURAL AND HUMAN INDUCED NUTRIENT IMPACTS ON PHYTOPLANKTON COMMUNITIES IN MERSIN BAY, NE MEDITERRANEAN Boran, Leona Julia; Uysal, Zahit; Department of Marine Biology and Fisheries (2017-11-01) Monthly sampling (January 2014 to December 2015) of 8 Erdemli Times Series stations showed that heterotrophic bacteria and cyanobacteria dominate coastal and off-shore plankton communities and decrease with depth and dista...

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