We present a unique data set of selected physicochemical parameters characterizing the environment of the Baltic coastal lakes within Polish borders. The peculiarity of the system derives principally from the interaction of the lakes with a sea of relatively low salinity. In contrast to our best understanding of the state of biological knowledge, the abiotic parameters of coastal lakes along the southern Baltic Sea have never previously been so comprehensively supplemented. The database consists of physicochemical properties of 13 coastal lakes based on the analytical assessment of 419 water samples collected seasonally between 2014 and 2019. Water properties were analyzed according to the connection of the lakes to the Baltic Sea using a total of 23 predictors. The lakes were classified as closed, intermittently connected, or open. Based on the physicochemical data, a relationship between the hydrological connection between the lakes and the sea was determined. The data collected could be used to monitor ongoing global climate change at the biosphere level.

我们提供了一组选定的物理化学参数的独特数据集，描述了波兰境内波罗的海沿海湖泊的环境特征。该系统的特殊性主要源于湖泊与盐度相对较低的海洋的相互作用。与我们对生物学知识状况的最佳理解相反，波罗的海南部沿岸湖泊的非生物参数以前从未得到过如此全面的补充。该数据库基于对 2014 年至 2019 年间季节性采集的 419 个水样的分析评估，包含 13 个沿海湖泊的理化特性。根据湖泊与波罗的海的连接，使用总共 23 个预测变量对水特性进行了分析。这些湖泊被分为封闭的、间歇性连接的或开放的。根据物理化学数据，确定了湖泊与海洋之间的水文联系之间的关系。收集到的数据可用于在生物圈层面监测持续的全球气候变化。