Paiva, M. P.; Nepomuceno, F. H.: On the reproduction in captivity of the oscar, Astronotus ocellatus (CUVIER), according to the mating methods (Pisces - Cichlidae). Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas 10 (4), pp. 361 - 377 (1989)

Rafael, J. A.: Descrição de duas espécies novas de ACZÉL (Diptera: Pipunculidae) de floresta inundável e de terra firme nas proximidades de Manaus, Amazonas, Brasil. Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas 10 (4), pp. 401 - 405 (1989)

Righi, G.: Três Oligochaeta, Glossoscoledidae da Amazônia. Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas 10 (4), pp. 393 - 399 (1989)

Valdivia Villar, R. S.; Burger O., L.: Descripción de Daphniopsis marcahuasensis sp. nov. (Cladocera: Daphniidae) del Perú, con la inclusión de una clave de identificación de las especies del Género. Amazoniana: Limnologia et Oecologia Regionalis Systematis Fluminis Amazonas 10 (4), pp. 439 - 452 (1989)

Cox, E. J.; Wagner, R.: Does Agapetus fuscipes cultivate algae in its case? Hydrobiologia 175 (1), pp. 117 - 120 (1989)

Wagner, R.: The influence of artificial stream bottom siltation on Ephemeroptera in emergence traps. Archiv für Hydrobiologie 115 (1), pp. 71 - 80 (1989)

Kiel, E.; Reidelbach, J.; Rühm, W.; Rupp, K.: Verhaltensbiologische Studie an Simuliiden (Simuliidae, Diptera): Landen und Ansiedeln auf einem Substrat. Zeitschrift für Angewandte Zoologie 76 (4), pp. 385 - 401 (1989)

Lampert, W.: The adaptive significance of diel vertical migrations. Functional Ecology 3 (1), pp. 21 - 27 (1989)

Marxsen, J.: Untersuchungen zur pH-Toleranz von Bakterien aus quellnahen Bächen mit unterschiedlichen pH-Werten. Immissionsbelastung des Waldes und seiner Böden - Gefahr für die Gewässer? Vorträge und Poster der Wissenschaftlichen Tagung Hydrologie und Wasserwirtschaft vom 28. bis 30. November 1988 in Fulda, pp. 383 - 391 (1989)

Nolte, U.: Chironomid communities of lotic mosses. Acta Biologica Debrecina Supplementum Oecologica Hungarica 3, pp. 249 - 255 (1989)

Nolte, U.: Oberservations on Neotropical Rainpools (Bolivia) with Emphasis on Chironomidae (Diptera). Studies on Neotropical Fauna and Environment 24 (3), pp. 105 - 120 (1989)

Sivec, I.; Zwick, P.: Addition to the knowledge of genus Chinoperla (Plecoptera: Perlidae). Aquatic Insects 11 (1), pp. 11 - 16 (1989)

Stark, B. P.; Zwick, P.: New Species of Macrogynoplax from Venezuela and Surinam (Plecoptera: Perlidae). Aquatic Insects 11 (4), pp. 247 - 255 (1989)

Sütfeld, R.: Preparative liquid chromatography with analytical separation quality: Internal injection/displacement reversed-phase high-performance liquid chromatography. Journal of Chromatography A 464, pp. 103 - 115 (1989)

Vaillant, F.; Wagner, R.: Notes on Empididae (5), Bergenstammia pulla sp.n. Aquatic Insects 11 (4), p. 200 - 200 (1989)

Wolf, B.; Zwick, P.: Plurimodal emergence and plurivoltinism of Central European populations of Nemurella pictetii (Plecoptera: Nemouridae). Oecologia 79 (4), pp. 431 - 438 (1989)

Zwick, P.: Notes on Plecoptera (18) Skwala americana (Klapálek, 1912), comb. n., the Valid Name for Skwala parallela (Frison, 1936). Aquatic Insects 11 (3), pp. 181 - 182 (1989)

Zwick, P.: Notes on Plecoptera (17) Isoperla pusilla (Klapálek, 1923), comb.n., the Valid Name of Isoperla minima Illies, 1963. Aquatic Insects 11 (1), p. 46 - 46 (1989)

Zwick, P.; Hortle, K. G.: First Records of Net-winged Midges (Diptera: Blephariceridae) from Papua New Guinea, with Description of a New Species. Australian Journal of Marine and Freshwater Research 40 (4), pp. 361 - 367 (1989)

Zwick, P.; Mendl, H.: Notes on Plecoptera (19) Isoperla lugens (Klapálek, 1923), replaces I. alpicola Brinck, 1949. Aquatic Insects 11 (2), p. 72 - 72 (1989)