Ecological Changes in the Sea of Marmara
Polychlorinated Biphenyls (Pcbs) and Organochlorine Pesticides (Ocps) in the Sea of Marmara, Türki̇ye
Seben Yücel, Ömer Suat Taşkın, Abdullah Aksu, Nuray Çağlar BalkısScientists have identified chemical pollutants that are toxic and persistent in the environment, posing a risk to the health of water, sediment, and living organisms. These pollutants, known as persistent organic pollutants, include substances such as polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs). PCBs and OCPs, which are categorized as persistent pollutants, accumulate in the environment and the food chain, thus posing a threat to numerous ecosystems. These pollutants can enter aquatic ecosystems through various pathways, and it is crucial to monitor their presence in water, sediment, and living organisms due to their potential adverse effects on both humans and the environment. The Sea of Marmara, located in a densely populated and industrially developed area within Turkey’s borders, is of particular importance for evaluating these pollutants. Additionally, the Sea of Marmara serves as a significant sea route due to its strategic location. This study aims to present the research conducted in the water, sediment, and biota of the Sea of Marmara regarding these pollutants, spanning from the past to the present, along with relevant literature. The findings of studies conducted in the Sea of Marmara reveal that traces of these chemicals can still be detected, even though they are no longer in use today. Results indicate that these pollutants have been found in sediments and biota such as fish and mussels at various times. It has been emphasized that consuming these organisms may pose health risks due to the excessive presence of these pollutants in some cases.