Wagner, R.: The influence of the diel activity pattern of the larvae of Sericostoma personatum (Kirby & Spence) (Trichoptera) on organic matter distribution in stream-bed sediments - a laboratory study. Hydrobiologia 224 (2), pp. 65 - 70 (1991)

Wagner, R.: Notes on Empididae (6), Hemerodromia cataluna (Strobl, 1909), Raised to Species Level. Aquatic Insects 13 (3), p. 182 (1991)

Zwick, P.: Notes on some Types of Indian Blephariceridae (Diptera) Named by B. K. KAUL. Aquatic Insects 13 (3), pp. 129 - 132 (1991)

Marten, M.: The effect of temperature on the egg incubation period of Perlodes microcephalus, Perlodes dispar (Plecoptera: Perlodidae) and Perla burmeisteriana (Plecoptera: Perlidae). In: Overview and Strategies of Ephemeroptera and Plecoptera, pp. 387 - 401 (Eds. Alba-Tercedor, J.; Sanchez-Ortega, A.). Sandhill Crane Press, Inc., Gainesville, Florida, USA (1991)

Marxsen, J.; Witzel, K.-P.: Significance for Extracellular Enzymes for Organic Matter Degradation and Nutrient Regeneration in Small Streams. In: Microbial Enzymes in Aquatic Environments, pp. 270 - 285 (Ed. Chróst, R. J.). Springer-Verlag, New York [et al.] (1991)

Zwick, P.: Biometric studies of the growth and development of two species of Leuctra and of Nemurella pictetii (Plecoptera: Leuctridae and Nemouridae). In: Overview and Strategies of Ephemeroptera and Plecoptera, pp. 515 - 526 (Eds. Alba-Tercedor, J.; Sanchez-Ortega, A.). Sandhill Crane Press, Inc., Gainesville, Florida, USA (1991)

Population extinction by mutational load and demographie stochasticity. (1991)

Wolf, B.: Nahrungsökologie der Fauna lenitischer Bereiche des Breitenbachs unter besonderer Berücksichtigung der Larven der Faltenmücke Ptychoptera paludosa Meigen, 1804 (Diptera). Dissertation, Gesamthochschule Kassel, Universität des Landes Hessen, Kassel (1991)

Meier, B. G.: Untersuchungen zur "Microbial Loop" im Plußsee. Dissertation, 69 Bl. pp., Christian-Albrechts-Universität, Kiel (1991)

Schmidt, T.: Faunistische und ökologische Untersuchungen an Fließgewässern im Hessischen Rothaargebirge. Diploma, Universität Marburg, Marburg (1991)

Christl, H.: Die Simuliiden des Breitenbaches - eine Emergenzstudie. Diploma, Philipps-Universität, Marburg (1991)

Werneke, U.: Populationsdynamik und Eiablage von Baetis rhodani (Pictet) und Baetis vernus Curtis (Insecta: Ephemeroptera). Diploma, Universität Tübingen, Tübingen (1991)