1. Seasonal cues in tropical organisms. Rainfall? Not necessarily!

   • Henk Wolda

   Original Papers Pages: 437 - 442

2. Population growth and predation interference between two species of predatory phytoseiid mites (Acarina: Phytoseiidae) in interactive systems

   • D. S. Yao
   • D. A. Chant

   Original Papers Pages: 443 - 455

3. Does parasitic infection compromise host survival under extreme environmental conditions? The case for Cerithidea californica (Gastropoda: Prosobranchia)

   • Wayne P. Sousa
   • Mary Gleason

   Original Papers Pages: 456 - 464

4. Daily carbon gain by Adenocaulon bicolor (Asteraceae), a redwood forest understory herb, in relation to its light environment

   • William A. Pfitsch
   • Robert W. Pearcy

   Original Papers Pages: 465 - 470

5. Steady-state and dynamic photosynthetic response of Adenocaulon bicolor (Asteraceae) in its redwood forest habitat

   • William A. Pfitsch
   • Robert W. Pearcy

   Original Papers Pages: 471 - 476

6. Germination and establishment of Sahelian rangeland species

   • W. Th. Elberse
   • H. Breman

   Original Papers Pages: 477 - 484

7. Changes in terpene production following nitrogen fertilization of grand fir (Abies grandis (Dougl.) Lindl.) seedlings

   • R. M. Muzika
   • K. S. Pregitzer
   • J. W. Hanover

   Original Papers Pages: 485 - 489

8. Seed dispersal by ants: behaviour-releasing compounds in elaiosomes

   • Christine R. Brew
   • Dennis J. O'Dowd
   • Ian D. Rae

   Original Papers Pages: 490 - 497

9. Root and microbial biomass dynamics under the canopy of the desert shrub Zygophyllum dumosum

   • R. S. Kinsbursky
   • Y. Steinberger

   Original Papers Pages: 498 - 500

10. Chemical barriers to adaptation by a specialist herbivore

    • M. R. Berenbaum
    • A. R. Zangerl
    • K. Lee

    Original Papers Pages: 501 - 506

11. Differential effect of tannic acid on two tree-feeding Lepidoptera: implications for theories of plant anti-herbivore chemistry

    • David N. Karowe

    Original Papers Pages: 507 - 512

12. Survival strategies of the crab spider Thomisus onustus Walckenaer 1806 (Chelicerata, Arachnida, Thomisidae)

    • A. Vogelei
    • R. Greissl

    Original Papers Pages: 513 - 515

13. Altitudinal variation of the thermal biology and running performance in the lizard Podarcis tiliguerta

    • Raoul Van Damme
    • Dirk Bauwens
    • Rudolf F. Verheyen

    Original Papers Pages: 516 - 524

14. Annual variation in the seasonal shift in egg size and clutch size in Sceloporus woodi

    • Vincent G. DeMarco

    Original Papers Pages: 525 - 532

15. Genetically-based variation between two spider populations in foraging behavior

    • Ann V. Hedrick
    • Susan E. Riechert

    Original Papers Pages: 533 - 539

16. Life-history variation in Crepis tectorum (Asteraceae)

    • Stefan Andersson

    Original Papers Pages: 540 - 545

17. Influence of cold soil and snowcover on photosynthesis and leaf conductance in two Rocky Mountain conifers

    • T. A. Day
    • E. H. DeLucia
    • W. K. Smith

    Original Papers Pages: 546 - 552

18. Diurnal changes in photochemical efficiency, the reduction state of Q, radiationless energy dissipation, and non-photochemical fluorescence quenching in cacti exposed to natural sunlight in northern Venezuela

    • W. W. Adams III
    • M. Díaz
    • K. Winter

    Original Papers Pages: 553 - 561

19. Feeding activity of the northern bat Eptesicus nilssoni during pregnancy and lactation

    • Jens Rydell

    Original Papers Pages: 562 - 565

20. Chiral escape of bark beetles from predators responding to a bark beetle pheromone

    • Kenneth F. Raffa
    • Kier D. Klepzig

    Original Papers Pages: 566 - 569

21. Molluscan life spans and long-term cycles in benthic communities

    • J. J. Beukema

    Short Communication Pages: 570 - 570