Studies of force acting on fish in the rotatory flow apparatus S. OlofssonP. E. Lindahl OriginalPaper Pages: 99 - 108
The colonization cycle of Amphinemura standfussi Ris (Ins.:Plecoptera) in the Abisko area Hans MendlKarl Müller OriginalPaper Pages: 109 - 111
Dynamics of feeding and growth of bluegill (Lepomis macrochirus) in Lake Wingra and Lake Mendota, Wisconsin F. M. El-Shamy OriginalPaper Pages: 113 - 124
Susceptibility of urea and uric acid levels to neurohormone influence in the freshwater pulmonate, lymnaea acuminata M. M. HanumanteU. D. DeshpandeR. Nagabhushanam OriginalPaper Pages: 125 - 128
Development and use of a Mathematical model for an antarctic Lake Leonard W. Howell Jr.Richard G. KrutchkoffBruce C. Parker OriginalPaper Pages: 129 - 134
Seasonal changes in the epiphyte community of natural and artificial macrophytes in Lake Memphremagog (Que. & Vt.) A. CattaneoJ. Kalff OriginalPaper Pages: 135 - 144
An ecological study of Phaenocora unipunctata (Örsted) (Turbellaria; Rhabdocoela): predator-prey interrelationships Johnstone O. Young OriginalPaper Pages: 145 - 149
Influence of the mud layer of the ‘watersportbaan’ at ghent on some aquatic life forms, especially chironomid larvae and filinia spp. J. De MaeseneerM. De PauwD. Waegeman OriginalPaper Pages: 151 - 158
Life cycles and habitats of wisconsin heptageniidae (ephemeroptera) R. W. FlowersW. L. Hilsenhoff OriginalPaper Pages: 159 - 171
Carotenoids in fish XIV. The carotenoid content in the flesh of certain species from the Antarctic. Bazyli CzeczugaBernard Klyszejko OriginalPaper Pages: 173 - 175
Particulate and dissolved organic matter in a small partly forested Ontario stream D. L. LushH. B. N. Hynes OriginalPaper Pages: 177 - 185
Some ecological observations on floating islands R. K. TrivedyK. P. SharmaB. Gopal OriginalPaper Pages: 187 - 190
