Mustafa MantikciMiddle East Technical University Institute of Marine Sciences
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Citations since 2017
9 Research Items
Izmit Bay is the northeast extent of the Sea of Marmara, consisting of two different water bodies. Vertical mixing primarily occurs during winter and thermal stratification takes place in summer. The bay is generally exposed to considerable anthropogenic inputs and industrial discharges. The picophytoplankton (P-Phyto) communities in Izmit Bay and...
Son dönemde Marmara Denizi’nde yoğunlukla gözlemlenen; görsel, ekolojik ve ticari yönlerden sebep olduğu olumsuz etkileri nedeniyle kamuoyunun gündemine oturan deniz salyası sadece bugün değil geleceğimizi için de tehlike oluşturuyor. Bu bağlamda Türkiye Bilimler Akademisi Başkanlığı, konusunda uzman bilim insanları bu çevre sorununu değerlendirmel...
published work based on long-term Black Sea data sets at regional scale from various projects and regional expeditions have been efficiently evaluated to understand the Black Sea characteristics since 1970s (quite well revised and updated by Tuğrul et al. 2014) until now, lastly discussed by Capet et al. (2016) on the decline of Black Sea oxygen in...
We used continuous measurements of dissolved oxygen (DO) in dark bottles to characterise patterns of the dark respiration rate (Rdark) for three marine phytoplankton monocultures and in natural-water samples from two marine coastal systems. Furthermore, patterns of ecosystem community respiration rate were determined from open-water changes in DO i...
The effects of previous photosynthetic activity on dark respiration rates were investigated in Heterocapsa rotundata (Dinophyceae), Rhodomonas salina (Cryptophyceae) and Thalassiosira weissflogii (Coscinodiscophyceae). Dark respiration rates were measured after 1 to 3 h of light exposure in 12 bottles where incubation irradiances ranging from 0 to...
Production and bioavailability of dissolved organic matter (DOM) were followed during a year in the nutrient-rich estuary, Roskilde Fjord (RF), and the more oligotrophic strait, Great Belt (GB), in Denmark. Bioavailability of dissolved organic carbon (DOC), nitrogen (DON), and phosphorous (DOP) was determined during incubations over six months. Ove...
Bacterioplankton play a key role in marine waters facilitating processes important for carbon cycling. However, the influence of specific bacterial populations and environmental conditions on bacterioplankton community performance remains unclear. The aim of the present study was to identify drivers of bacterioplankton community functions, taking i...
Nitrogen (N) fixation is fueling planktonic production in a multitude of aquatic environments. In meso- and poly-haline estuaries, however, the contribution of N by pelagic N2 fixation is believed to be insignificant due to the high input of N from land and the presumed absence of active N2-fixing organisms. Here we report N2 fixation rates, nifH g...
The composition and abundance of phytoplankton and the corresponding environmental conditions were investigated during a mucilage event (October 2007-February 2008) in the Sea of Marmara. The mucilage producers Gonyaulax fragilis, Skeletonema costatum,and Cylindrotheca closterium were identified as abundant species. Thallassiosira rotula was also i...
The overall objective of the project is to support Turkey in achieving and/or maintaining the seas under its sovereignty and jurisdiction in good environmental status taking into consideration the relevant EU legislation/policy requirements and especially the MSFD. The specific objectives are building MSFD-related institutional/administrative and technical/scientific capacity in Turkey, supporting the country in achieving improved protection of its seas by making recommendations on legal/policy developments and institutional restructuring and demonstrating, through pilot studies in selected areas in Black and Mediterranean Seas, how the EU MSFD works, taking into consideration existing practices in the Republic of Turkey. The main results to attain the mentioned objectives are to improve the required technical and administrative capacity for future transposition and implementation of MSFD and to prepare methodology (Guidelines) on MSFD implementation in general and specifically for the project pilot areas based on the outcomes of all project activities.