Mar Pollut Bull. 2015 Feb 28;91(2):491-505. doi: 10.1016/j.marpolbul.2014.10.008.
The aim of this work is to assess the physicochemical conditions of the supratidal sediments colonized by microbial mats at two sites from Rosales Harbor (Bahía Blanca Estuary, Argentina) close to sewage discharge. Both sites differed in the size grain. No differences in pH, Eh and temperature were observed. Moisture retention and chlorophyll a concentration were significantly different between sites and sediment layers. Heavy metals and organic matter content were significantly higher in SII. No statistical differences were found in porewater nutrients concentration, being higher in SI (except DSi). The presence of Escherichia coli in water and sediment (1000 CFU/100 mL - uncountable and 35-40 CFU g(-1) dw, respectively) evidenced microbial contamination in the study area. The relationships between the physicochemical parameters evaluated and the influence of the sewage discharge allow defining two different areas in the Rosales Harbor despite the proximity and the presence of microbial mats.
本研究旨在评估罗萨莱斯港（阿根廷布兰卡湾河口）两个受微生物垫定殖的潮上带沉积物的理化条件，这两个地点靠近污水排放口。两个地点的粒径大小不同。pH 值、Eh 值和温度均无差异。水分保持和叶绿素 a 浓度在站点和沉积物层之间存在显著差异。SII 中的重金属和有机物含量明显较高。孔隙水养分浓度无统计学差异，SI 较高（除 DSi 外）。水中和沉积物中大肠杆菌的存在（分别为 1000 CFU/100 mL-无法计数和 35-40 CFU g(-1) dw）表明研究区域存在微生物污染。评估的理化参数之间的关系以及污水排放的影响可以在罗萨莱斯港定义两个不同的区域，尽管它们靠近且存在微生物垫。
