However any of the first three below would be excellent depending on your own interests. Suggested text-any one of the top three. See Course Instructor Limnoecology, The Ecology of Lakes and Streams , 1997. Winfried Lampert and Ulrich Sommer. Oxford University Press.
Text is unique in tying in ecological concepts with fresh water limnology.
Ideal for those with main interest in ecology. Ecology of Fresh Waters, Man and Medium, Past to Future. Inc. 557 pages. Entirely on fresh waters with international approach. Strong emphasis on running waters and human impact on fresh waters.