1. A stressed stream ecosystem: macroinvertebrate community integrity and microbial trophic response

   • P. F. Kondratieff
   • R. A. Matthews
   • A. L. Buikema Jr.

   OriginalPaper Pages: 81 - 91

2. Indicator bacteria in freshwater and marine molluscs

   • M. M. Al-Jebouri
   • D. R. Trollope

   OriginalPaper Pages: 93 - 102

3. Description of a new automatic plankton sampler that collects and preserves multiple samples over a period of several days

   • Fergus C. O'Hara

   OriginalPaper Pages: 103 - 105

4. Interactions between pelagic metazoan and protozoan zooplankton, an experimental study

   • Jan A. E. Stenson

   OriginalPaper Pages: 107 - 112

5. Effects of a massive swarm of ants on ammonium concentrations in a subalpine lake

   • Richard G. Carlton
   • Charles R. Goldman

   OriginalPaper Pages: 113 - 117

6. Vertical distribution of organic constituents in an Antarctic lake: Lake Vanda

   • Genki Matsumoto
   • Tetsuya Torii
   • Takahisa Hanya

   OriginalPaper Pages: 119 - 126

7. Zooplankton densities in a Hydrilla infested lake

   • Don C. Schmitz
   • John A. Osborne

   OriginalPaper Pages: 127 - 132

8. Coliform concentrations in Lake Erie — 1966 to 1970

   • S. R. Esterby
   • A. H. El-Shaarawi

   OriginalPaper Pages: 133 - 146

9. Cost and precision in a stream sampling program

   • Andrew L. Sheldon

   OriginalPaper Pages: 147 - 152

10. Diel changes in the benthos of stones and of drift in a southern Australian upland stream

    • A. Graesser
    • P. S. Lake

    OriginalPaper Pages: 153 - 160