J. Hartmann

Responses of Percid Fishes and Their Habitats to Eutrophication

J. Leach, M. G. Johnson, J. Kelso, 1977 .

Fecundity of whitefish (Coregonus lavaretus) during the eu‐and oligotrophication of Lake Constance

J. Hartmann, H. Quoss, 1993 .

Percids of Lake Constance, a Lake Undergoing Eutrophication

J. Hartmann, W. Nümann, 1977 .

Juvenile Saury Pike (Scomberesox Saurus Walb.), an Example of Ichthyoneuston

J. Hartmann, 1970 .

Human‐induced changes in the reproductive traits of Lake Constance common whitefish (Coregonus lavaretus)

J. Hartmann, R. Eckmann, G. Thomas, 2009, Journal of evolutionary biology.

11-year cycle of spawning time and growth of the whitefish (Coregonus lavaretus) of Lake Constance

J. Hartmann, 1984, Schweizerische Zeitschrift für Hydrologie.