MARMARA DENİZİ’NDE DENİZ SALYASI (MÜSİLAJ) OLUŞMA NEDENLERİ VE ALINMASI GEREKEN ÖNLEMLER


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Yümün Z. Ü., Kam E., Önce M.

Çevre Şehir ve İklim Dergisi, vol.2, no.3, pp.98-115, 2023 (Peer-Reviewed Journal)

  • Publication Type: Article / Article
  • Volume: 2 Issue: 3
  • Publication Date: 2023
  • Journal Name: Çevre Şehir ve İklim Dergisi
  • Page Numbers: pp.98-115
  • Istanbul Technical University Affiliated: Yes

Abstract

ABSTRACT The increase in nutrients (nutrients) in the seas, sudden changes in water temperature and low water current cause a significant proliferation of algae and other phytoplankton. These microorganisms form a transparent, sticky jelly-like substance known as sea snot. The mucilage cover, which covers the water surface and causes photosynthesis to stop partially or completely in the aquatic environment, reduces the dissolved oxygen ratio in the water. Mass deaths occur in creatures living in marine environments with low oxygen levels. With the addition of the remains of dead creatures to the sea snot, the mucilage turns into a substance that emits a bad odor in the environment. This situation is also seen in the Marmara Sea from time to time and creates a serious environmental problem. In order to investigate the causes of this problem, samples were taken from the waters discharged into the sea, sea snot and sea water and necessary analyzes were made. The pH value of mucilage is between 6.65-7.12, and the pH value of sea water is between 7.88-8.25. According to the analysis results, it was determined that the mucilage sample was acidic and the seawater sample was basic. By adding nitrogen and phosphorus fertilizers to the sea water, the acidity of the water and the mucilage was monitored. In this experiment, it was observed that the pH value of mucilage decreased to 6.15-6.55 and the pH value of sea water decreased to 7.15-7.25, making the environment acidic and increasing the electrical conductivity. In order not to increase pollution in seas or lakes, untreated water should not be discharged into these environments and the flow of sea water should be increased if possible. The Sea of Marmara had the ability to clean itself up to the present day due to the water currents from the Dardanelles and Istanbul Straits. However, recently, the agents polluting the Sea of Marmara have increased due to the increasing industrialization in the region, increasing population, increase in ship traffic and the increase in fertilizers and pesticides used in agricultural activities. These pollution increases are above the self-cleaning capacity of the sea, and the pollution of the sea is inevitable. For this reason, it is of vital importance not to discharge wastewater into the sea and to increase controls in agricultural activities and ship traffic in order to solve the environmental problems of the Sea of Marmara. In addition, providing clean water to the sea through natural or artificial waterways should be investigated in order to increase the water flow of the Sea of Marmara and to dilute the water pollution.