(3 credits) Prerequisite(s): BIO 200, BIO 202, and CHM 261 or equivalent; Corequisite: EVS 471. A study of aquatic ecosystems, including lakes, streams, rivers, and wetlands. Commonalities and differences between the physical-chemical and biological components of these ecosystems will be discussed. The impacts of human activities on these ecosystems are covered, as well as water quality assessment techniques, pollution control, and regulation. This course includes three required Saturday field trips.