1. Life-history evolution in Anodonta piscinalis (Mollusca, Pelecypoda)

   • Erkki Haukioja
   • Tuomo Hakala

   OriginalPaper Pages: 253 - 266

2. The adaptation to temperature of photorespiration and of the photosynthetic carbon metabolism of altitudinal ecotypes of Trifolium repens L.

   • F. Mächler
   • J. Nösberger

   OriginalPaper Pages: 267 - 276

3. Leaf water potential, component potentials and relative water content in a xeric grass, Agropyron dasystachyum (Hook.) Scribn.

   • J. O. Maxwell
   • R. E. Redmann

   OriginalPaper Pages: 277 - 284

4. Ecophysiological studies of Sonoran Desert plants

   • S. R. Szarek
   • R. M. Woodhouse

   OriginalPaper Pages: 285 - 294

5. Environmental influences on photosynthesis within the crown of a white oak

   • R. R. Aubuchon
   • D. R. Thompson
   • T. M. Hinckley

   OriginalPaper Pages: 295 - 306

6. Comparison of four populations of Acanthoscelides obtectus (Coleoptera: Bruchidae) from different Colombian ecosystems

   • J. Huignard
   • J. C. Biemont

   OriginalPaper Pages: 307 - 318

7. Ovarian activity and reproductive potential in a natural population of Drosophila melanogaster

   • Josselyne Boulétreau

   OriginalPaper Pages: 319 - 342

8. Climatic adaptation and species status in the lawn ground cricket

   • Sinzo Masaki

   OriginalPaper Pages: 343 - 356

9. Importance of algae in the diet of the oligochaetes Lumbriculus variegatus (MÜller) and Rhyacodrilus sodalis (Eisen)

   • James W. Moore

   OriginalPaper Pages: 357 - 363

10. A technique for determining individual fresh weights of live small animals, with special reference to Enchytraeidae

    • Heléne Lundkvist

    Short Communication Pages: 365 - 367