1. Diurnal variation of phytoplankton in Loch Lomond

   • B. K. Maulood
   • G. C. F. Hinton
   • A. D. Boney

   OriginalPaper 01 April 1978 Pages: 99 - 117

2. A poecilostome copepod parasitic in a scleractinian coral in the moluccas

   • Arthur G. Humes

   OriginalPaper 01 April 1978 Pages: 119 - 128

3. A partial analysis of ecological segregation in the chironomid community of a bog lake

   • V. Ramcharan
   • C. G. Paterson

   OriginalPaper 01 April 1978 Pages: 129 - 135

4. Studies on growth indices of the fresh water prosobranch, Melania scabra

   • E. V. Muley

   OriginalPaper 01 April 1978 Pages: 137 - 143

5. Downstream changes in the composition, numbers and biomass of bottom fauna in the Tees below Cow Green Reservoir and in an unregulated tributary Maize Beck, in the first five years after impoundment

   • Patrick D. Armitage

   OriginalPaper 01 April 1978 Pages: 145 - 156

6. Reproductive biology of the indian freshwater leech, Poecilobdella viridis (Blanchard)

   • G. K. Kulkarni
   • R. Nagabhushanam
   • M. M. Hanumante

   OriginalPaper 01 April 1978 Pages: 157 - 165

7. Verteilung und systematik der freilebenden nematoden des neusiedlersees

   • Fritz Schiemer

   OriginalPaper 01 April 1978 Pages: 167 - 194

8. Libri novi

   BookReview 01 April 1978 Pages: 195 - 195

9. Announcement

   Announcement 01 April 1978 Pages: 196 - 196