Çardak Lagoon is one of the most important marine environments in the Turkish Strait system, which is home to a variety of organisms. The lagoon is currently under stress and faces the risk of heavy pollution. For this reason, the present state of the lagoon was monitored in this study. During sampling from October 2018 to June 2019, the levels of indicator microorganisms fluctuated up to 4.04 Log10 cfu 100 ml−1 and their presence was found to be higher in warmer seasons. The highest positive correlations were observed for total coliform levels with salinity and chemical oxygen demand, whereas the highest negative correlations were found between the levels of fecal coliforms, pH and temperature. E. coli and fecal streptococci showed moderate correlations with the environmental factors in all seasons. Although nitrite and nitrate (NO2 + NO3) were not significantly correlated with bacteria levels, they were present at elevated levels. Çardak Lagoon showed the lowest microbiological and chemical quality in the summer season, and this situation continued into the autumn season as a possible result of increased wastewater discharge and human activities. The lagoon should therefore be monitored regularly and precautions should be taken to prevent severe ecological deterioration.

中文翻译：

---

季节变化和环境因素对土耳其恰纳卡莱海峡恰达克泻湖生物指示菌水平的影响

Çardak 泻湖是土耳其海峡系统中最重要的海洋环境之一，是各种生物的家园。泻湖目前处于压力之下，面临重污染的风险。出于这个原因，本研究监测了泻湖的现状。在 2018 年 10 月至 2019 年 6 月的采样期间，指示微生物的水平波动高达 4.04 Log10 cfu 100 ml-1，并且发现它们的存在在温暖的季节更高。总大肠菌群水平与盐度和化学需氧量的正相关性最高，而粪便大肠菌群水平、pH和温度之间的负相关性最高。大肠杆菌和粪链球菌在所有季节都与环境因素呈中度相关性。尽管亚硝酸盐和硝酸盐 (NO2 + NO3) 与细菌水平没有显着相关性，但它们的水平升高。Çardak 泻湖在夏季表现出最低的微生物和化学质量，并且由于废水排放和人类活动增加，这种情况一直持续到秋季。因此，应定期监测泻湖，并采取预防措施防止严重的生态恶化。