The concentration of chemical and biological parameters in the ecotone of the surface microlayer (SML) occurring between the hydrosphere and the atmosphere of urban water bodies was investigated. Parallel, sub-surface water (SUB) analyses were carried out to compare the SML properties with the water column. The concentrations of trace metals, macronutrients, nutrients, chlorophyll a, pheophytin, abundance and biomass of phytoplankton and the number of heterotrophic bacteria in both studied layers were analyzed. Each of the studied groups of chemical parameters was characterized by specific properties of accumulation. Trace metals occurring in concentrations below 1 ppm, such as Al, Ba, Cd, Cr, Cu, Fe, Mn, Ni, Zn and metalloid As, were accumulated to a higher degree in SML than in SUB. Macroelement concentrations, with the exception of Mg, were lower in the SML compared to the SUB. Nutrients, autotrophic and heterotrophic microorganisms occurred in the SML to a higher degree than in the SUB. Bacillariophyceae dominated the analyzed water bodies, which are typical for the spring period, as well as Chrysophyceae, Chlorophyceae, Dinophyceae and Euglenophyceae. Cyanobacteria dominated in one of the ponds. The abundance of individual phytoplankton groups was significantly correlated with Ca, K, Na, P-org, SO42−, F−, Al and Sr.

中文翻译：

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城市水体表面微层植物色素及化学成分

研究了水圈和城市水体大气之间的表面微层 (SML) 交错带中化学和生物参数的浓度。进行平行的地下水 (SUB) 分析以将 SML 特性与水柱进行比较。分析了两个研究层中痕量金属、常量营养素、营养素、叶绿素 a、脱镁叶绿素、浮游植物的丰度和生物量以及异养细菌的数量的浓度。每组研究的化学参数都以特定的积累特性为特征。浓度低于 1 ppm 的痕量金属，如 Al、B​​a、Cd、Cr、Cu、Fe、Mn、Ni、Zn 和准金属 As，在 SML 中的积累程度高于 SUB。常量元素浓度，除了 Mg，与 SUB 相比，SML 较低。营养物质、自养和异养微生物在 SML 中的出现程度高于 SUB。在分析的水体中，芽孢杆菌科占主导地位，这是春季典型的水体，以及金藻科、绿藻科、甲藻科和裸藻科。蓝藻在其中一个池塘中占主导地位。单个浮游植物群的丰度与 Ca、K、Na、P-org、SO42-、F-、Al 和 Sr 显着相关。