1. Effects of temperature and CO₂ enrichment on kinetic properties of phospho-enol-pyruvate carboxylase in two ecotypes of Echinochloa crus-galli (L.) Beauv., a C₄ weed grass species

   • Jean-Pierre Simon
   • Catherine Potvin
   • Boyd R. Strain

   Original Papers Pages: 145 - 152

2. Intraspecific competitive effects on water relations, growth and reproduction in Encelia farinosa

   • James R. Ehleringer

   Original Papers Pages: 153 - 158

3. Dynamic behavior of CO₂ uptake as affected by light: system identification based on spectral analysis

   • Yasushi Hashimoto
   • Boyd R. Strain
   • Taketoshi Ino

   Original Papers Pages: 159 - 165

4. Previous herbivore attack of red alder may improve food quality for fall webworm larvae

   • Kathy S. Williams
   • Judith H. Myers

   Original Papers Pages: 166 - 170

5. The influence of conditioning on olfactory microhabitat and host location in Asobara tabida (Nees) and A. rufescens (Foerster) (Braconidae: Alysiinae) larval parasitoids of Drosophilidae

   • Louise E. M. Vet
   • Karin van Opzeeland

   Original Papers Pages: 171 - 177

6. Nectar intake and energy expenditure in a flower visiting bat

   • O. v. Helversen
   • H. -U. Reyer

   Original Papers Pages: 178 - 184

7. Foliar terpenoids in Tsuga species and the fecundity of scale insects

   • Mark S. McClure
   • J. Daniel Hare

   Original Papers Pages: 185 - 193

8. Allelopathic interaction between a reef coelenterate and benthic algae

   • R. P. M. Bak
   • J. L. A. Borsboom

   Original Papers Pages: 194 - 198

9. Composition of cyclic and non-cyclic vole populations: On the causes of variation in individual quality among Clethrionomys glareolus in Sweden

   • Lennart Hansson

   Original Papers Pages: 199 - 206

10. Environmentally controlled phenotypic plasticity of morphology and polypeptide expression in two populations of Daphnia pulex (Crustacea: cladocera)

    • Lester W. Lee

    Original Papers Pages: 207 - 214

11. Photosynthetic responses to light in seedlings of selected Amazonian and Australian rainforest tree species

    • J. H. Langenheim
    • C. B. Osmond
    • P. J. Ferrar

    Original Papers Pages: 215 - 224

12. Variable wind directions and anemotactic strategies of searching for an odour plume

    • M. W. Sabelis
    • P. Schippers

    Original Papers Pages: 225 - 228

13. Nectar extraction by hummingbirds: response to different floral characters

    • Robert D. Montgomerie

    Original Papers Pages: 229 - 236

14. Autumn stomatal closure in six conifer species of the Central Rocky Mountains

    • W. K. Smith
    • D. R. Young
    • G. M. McNaughton

    Original Papers Pages: 237 - 242

15. A comparative study of floral and electrophoretic variation with life history variation in Limnanthes alba (Limnanthaceae)

    • Kermit Ritland
    • Subodh Jain

    Original Papers Pages: 243 - 251

16. The diurnal course of plant water potential, stomatal conductance and transpiration in a papyrus (Cyperus papyrus L.) canopy

    • M. B. Jones
    • F. M. Muthuri

    Original Papers Pages: 252 - 255

17. Determination of leaf heat resistance: comparative investigation of chlorophyll fluorescence changes and tissue necrosis methods

    • H. -W. Bilger
    • U. Schreiber
    • O. L. Lange

    Original Papers Pages: 256 - 262

18. Light response characteristics of net CO₂ exchange in brackish wetland plant communities

    • Bert G. Drake

    Original Papers Pages: 263 - 270

19. Seasonal changes in photosynthetic activity of snow tussocks (Chionochloa spp.) along an altitudinal gradient in Otago, New Zealand

    • Dennis H. Greer

    Original Papers Pages: 271 - 274

20. Effect of defoliation by checkerspot caterpillars (Euphydryas phaeton) and sawfly larvae (Macrophya nigra and Tenthredo grandis) on their host plants (Chelone spp.)

    • Nancy E. Stamp

    Original Papers Pages: 275 - 280

21. Habitat shift and geographical variation in North American tanagers (Thraupinae: Piranga)

    • Eyal Shy

    Original Papers Pages: 281 - 285

22. Clearance rates of bacteria-sized particles by freshwater ciliates, measured with monodisperse fluorescent latex beads

    • Knut Yngve Børsheim

    Original Papers Pages: 286 - 288