1. Predicting extinctions: interspecific competition, predation and population variability in experimental Daphnia populations

   • Jan Bengtsson
   • Göran Milbrink

   Original Paper Pages: 397 - 406

2. Dietary energetics of the insectivorous Mexican free-tailed bat (Tadarida brasiliensis) during pregnancy and lactation

   • T. H. Kunz
   • J. O. Whitaker Jr.
   • M. D. Wadanoli

   Original Paper Pages: 407 - 415

3. Intra- and interspecific competition and host race formation in the apple maggot fly, Rhagoletis pomonella (Diptera: Tephritidae)

   • Jeffrey L. Feder
   • Katherine Reynolds
   • Emma C. Wang

   Original Paper Pages: 416 - 425

4. Social organization and space use in California voles: seasonal, sexual, and age-specific strategies

   • M. Salvioni
   • W. Z. Lidicker Jr.

   Original Paper Pages: 426 - 438

5. Allocation, within and between organs, and the dynamics of root length changes in two birch species

   • G. M. Berntson
   • E. J. Farnsworth
   • F. A. Bazzaz

   Original Paper Pages: 439 - 447

6. Seedling recruitment patterns in a Belizean mangrove forest: effects of establishment ability and physico-chemical factors

   • Karen L. McKee

   Original Paper Pages: 448 - 460

7. Plant stress and larval performance of a dipterous gall former

   • L. De Bruyn

   Original Paper Pages: 461 - 466

8. Slight tissue wounding fails to induce consistent chemical defense in three willow (Salix spp.) clones

   • R. Julkunen-Tiitto
   • J. P. Bryant
   • H. Roininen

   Original Paper Pages: 467 - 471

9. Winter growth phenology and leaf orientation in Pachypodium namaquanum (Apocynaceae) in the succulent karoo of the Richtersveld, South Africa

   • P. W. Rundel
   • R. M. Cowling
   • H. Bezuidenhout

   Original Paper Pages: 472 - 477

10. Individualistic responses of bird species to environmental change

    • Mark L. Taper
    • Katrin Böhning-Gaese
    • James H. Brown

    Original Paper Pages: 478 - 486

11. Do seasonal changes in numbers of aerially dispersing spiders reflect population density on the ground or variation in ballooning motivation?

    • G. S. Weyman
    • P. C. Jepson
    • K. D. Sunderland

    Original Paper Pages: 487 - 493

12. Photosynthetic carbon assimilation by Crassula helmsii

    • Jonathan R. Newman
    • John A. Raven

    Original Paper Pages: 494 - 499

13. Deceptive pollination of Dactylorhiza incarnata: an experimental test of the magnet species hypothesis

    • Antti Lammi
    • Markku Kuitunen

    Original Paper Pages: 500 - 503

14. Patterns of light and nitrogen distribution in relation to whole canopy carbon gain in C₃ and C₄ mono- and dicotyledonous species

    • N. P. R. Anten
    • F. Schieving
    • M. J. A. Werger

    Original Paper Pages: 504 - 513

15. Environmental and physiological regulation of transpiration in tropical forest gap species: the influence of boundary layer and hydraulic properties

    • F. C. Meinzer
    • G. Goldstein
    • J. Cavelier

    Original Paper Pages: 514 - 522