PhD. Dsc. Andrzej Skwierawski is the Assistant Professor at University of Warmia and Mazury in Olsztyn, Department of Water Resources and Climatology, and has been from 2004. Graduated from the University of Agriculture and Technology in Olsztyn (1999), majoring in Environmental Protection and specializing in water protection, Dr. Skwierawski completed a Ph.D. thesis at the University of Warmia and Mazury in Olsztyn (2004), in the discipline of environmental management, specializing in ecological engineering and the protection of aquatic ecosystems. Research interests include the following: issues of the role, evolution, and anthropogenic transformations of aquatic ecosystems, factors influencing their trophic state and water quality, and research on the role and circulation of nutrients and other pollutants in catchments of various uses. Dr. Skwierawski has professional experience in performing experimental monitoring work, including research projects, and extensive teaching experience. Dr. Skwierawski is a member of the Polish Society of Ecological Engineering, the Polish Soil Science Society, and the Polish Magnesium Society.