In the evaluation report prepared in line with the views put forward at the meeting, mucilage was defined as “a phenomenon that causes problems on the environment and all living things, which adversely affects the fisheries of seafood and species diversity”.
In the said report, the following determinations were made regarding the dimensions of the problem:
“It is thought that the main reason for mucilage is the nutrient load from the city, industry and agriculture, which reaches the Sea of Marmara far above the carrying capacity of the marine ecosystem, and the excessive biological production observed together. This excessive nutrient load is thought to be environmental crises such as mucilage, as well as oxygen deficiency and ecosystem destruction in the Marmara Sea. as well as chronic problems.
Marmara is the first region of Turkey in terms of population density and economic activities. Rapid population growth increases the amount of waste water and waste load and pollutants in cities. The inadequacy of wastewater treatment plants increases the incidence of mucilage and similar problems.
Contaminations such as mucilage are not only short-term but long-term problems that require solutions. The effects of mucilage on the sea surface and bottom should be considered as a separate topic. For this reason, the fight against pollution should include long-term permanent solutions to the problem as well as solving existing problems.
Studies show that mucilage rates can increase or decrease seasonally and this formation can be easily affected by environmental factors and climate change.
Intense mucus formations on the surface and deep waters of the Sea of Marmara cause the formation of mucilage clusters caused by the sudden proliferation of phytoplankton and their metabolic secretions.
The existence of mucilage and its long-term persistence also increase the economic losses it creates. Especially during the hunting season, it can negatively affect the fishing industry by up to 80 percent in some periods.
Suggestions for solving the problem
In the report, it was stated that the participation and support of the countries neighboring the Marmara Sea and interacting with the sea (such as the Danube Basin) should be requested in the solution of the problem, and other solution proposals were summarized as follows:
“There is a need for an interdisciplinary evaluation of the fight against mucilage, not only in terms of aquatic ecosystem and environment, but also including its economic and social dimensions; this problem should be discussed with the contribution of different related scientific disciplines, short and long-term solution proposals should be determined and implemented as an emergency action plan. .
There is a need for multidimensional analyzes by marine and environmental economists, including the global, national and regional economic effects of mucilage, especially environmental pollution damage, biodiversity, seafood production, fishing activities and employment, and its widespread negative effects on the tourism sector.
Considering the economic, social and psychological interactions of mucilage, the cooperation of the civil administration and local governments is important in raising the environmental awareness/awareness of producers and consumers. The follow-up of the implementation of the measures taken within the framework of the emergency action plan should be provided by the Ministry of Environment and Urbanization.
Process and capacity adequacy should be ensured in existing wastewater treatment plants. Organized industrial zones and individual industrial facilities that discharge their waste water to the wastewater channel network in the central urban waste treatment plant basin should be prevented from discharging priority and hazardous materials into the municipal channel network through effective monitoring and inspection.
It is necessary to monitor the physicochemical status and biodiversity by continuously monitoring the water quality on a monthly basis in the water column, especially in the coastal and transitional waters, between the Black Sea entrance of the Bosphorus and the Marmara exit of the Dardanelles.