1. Monitoring photosynthetic activity of crustose lichens using a PAM-2000 fluorescence system

   • B. Schroeter
   • T. G. A. Green
   • L. Kappen

   Original Papers Pages: 457 - 462

2. A generalized, lumped-parameter model of photosynthesis, evapotranspiration and net primary production in temperate and boreal forest ecosystems

   • John D. Aber
   • C. Anthony Federer

   Original Papers Pages: 463 - 474

3. Induction of crassulacean acid metabolism in Mesembryanthemum crystallinum increases reproductive success under conditions of drought and salinity stress

   • Klaus Winter
   • Hubert Ziegler

   Original Papers Pages: 475 - 479

4. Effects of leaf and sap feeding insects on photosynthetic rates of goldenrod

   • Gretchen A. Meyer
   • Thomas H. Whitlow

   Original Papers Pages: 480 - 489

5. Salt stress limitation of seedling recruitment in a salt marsh plant community

   • Scott W. Shumway
   • Mark D. Bertness

   Original Papers Pages: 490 - 497

6. Asymmetric competition between distant taxa: poecilid fishes and water striders

   • Göran Englund
   • Frank Johansson
   • Tommy I. Olsson

   Original Papers Pages: 498 - 502

7. Estimating asymptotic size using the largest individuals per sample

   • J. A. Stamps
   • R. M. Andrews

   Original Papers Pages: 503 - 512

8. Are some plant life forms more effective than others in screening out ultraviolet-B radiation?

   • T. A. Day
   • T. C. Vogelmann
   • E. H. DeLucia

   Original Papers Pages: 513 - 519

9. Plant competition, abiotic, and long- and short-term effects of large herbivores on demography of opportunistic species in a semiarid grassland

   • D. G. Milchunas
   • W. K. Lauenroth
   • P. L. Chapman

   Original Papers Pages: 520 - 531

10. Comparative ecophysiology of five species of Sedum (Crassulaceae) under well-watered and drought-stressed conditions

    • Dennis A. Gravatt
    • Craig E. Martin

    Original Papers Pages: 532 - 541

11. Distance effects on resource profitability and recruitment in the giant tropical ant, Paraponera clavata

    • Jennifer H. Fewell
    • Jon F. Harrison
    • Michael D. Breed

    Original Papers Pages: 542 - 547

12. Nearest-neighbour graphical analysis of spatial pattern and a test for competition in populations of singing crickets (Teleogryllus commodus)

    • D. J. Campbell

    Original Papers Pages: 548 - 551

13. Dynamics of forager arrivals and nectar renewal in flowers of Anchusa strigosa

    • Ronen Kadmon

    Original Papers Pages: 552 - 555

14. Guns and butter: a no cost defense against predation for Chrysomela confluens

    • Michael J. C. Kearsley
    • Thomas G. Whitham

    Original Papers Pages: 556 - 562

15. Distributions of occupied and vacant butterfly habitats in fragmented landscapes

    • C. D. Thomas
    • J. A. Thomas
    • M. S. Warren

    Original Papers Pages: 563 - 567

16. Environmental effects on CO₂ efflux from riparian tundra in the northern foothills of the Brooks Range, Alaska, USA

    • S. F. Oberbauer
    • C. T. Gillespie
    • J. D. Tenhunen

    Original Papers Pages: 568 - 577

17. Adaptive significance of nitrogen storage in Bistorta bistortoides, an alpine herb

    • Charles H. Jaeger
    • Russell K. Monson

    Original Papers Pages: 578 - 585

18. Photosynthetic plasticity of two rain forest shrubs across natural gap transects

    • Robin L. Chazdon

    Original Papers Pages: 586 - 595

19. Foraging behavior of specialist and generalist caterpillars on plantain (Plantago lanceolata) altered by predatory stinkbugs

    • Nancy E. Stamp
    • M. Deane Bowers

    Original Papers Pages: 596 - 602