1. Zooplankton, and related phytoplankton cycles, in a eutrophic lake

   • James W. Moore

   OriginalPaper 01 September 1980 Pages: 99 - 104

2. Preference-avoidance reactions of crayfish to sublethal concentrations of cadmium

   • Anthony F. Maciorowski
   • Ernest F. Benfield
   • John Cairns Jr.

   OriginalPaper 01 September 1980 Pages: 105 - 112

3. Microbiological studies of a ‘virgin’ salt-fresh water transect at North Point, James Bay II. Mycological aspects

   • J. P. Sherry
   • S. R. Kuchma

   OriginalPaper 01 September 1980 Pages: 113 - 117

4. The effects of mine drainage and organic enrichment on benthos in the river nent system, Northern Pennines

   • Patrick D. Armitage

   OriginalPaper 01 September 1980 Pages: 119 - 128

5. Active entry of stream benthic macroinvertebrates into the water column

   • O. Eugene Walton Jr.

   OriginalPaper 01 September 1980 Pages: 129 - 139

6. Die produktion von potamopyrgus jenkinsi (SMITH) (Gastropoda, prosobranchia) im bodensee

   • Peter Frenzel

   OriginalPaper 01 September 1980 Pages: 141 - 144

7. Role of eyestalk hormone in the carbohydrate metabolism of a marine penaeid prawn, Parapenaeopsis hardwickii (MIERS) (Crustacea, Decapoda, Penaeidae)

   • R. Nagabhushanam
   • G. K. Kulkarni

   OriginalPaper 01 September 1980 Pages: 145 - 150

8. Benthic macroinvertebrate communities of the athabasca river near Ft. Mackay, Alberta

   • David R. Barton

   OriginalPaper 01 September 1980 Pages: 151 - 160

9. A study on the faeces of some chalk stream invertebrates

   • M. Ladle
   • B. S. Griffiths

   OriginalPaper 01 September 1980 Pages: 161 - 171

10. Some ecological aspects of Lake Qarun, Fayoum, Egypt. Part I. Physico-chemical environment

    • M. M. Ishak
    • S. A. Abdel-Malek

    OriginalPaper 01 September 1980 Pages: 173 - 178

11. A hydrobiological survey of a polluted canal

    • Murad-B. M. Mohammad

    OriginalPaper 01 September 1980 Pages: 179 - 186

12. Description of a new submersible filter-pump apparatus for sampling plankton

    • Stephen W. Waite
    • Scott M. O'Grady

    OriginalPaper 01 September 1980 Pages: 187 - 191

13. Libri novi

    BookReview 01 September 1980 Pages: 192 - 192