1. Sensitivity of fitness to macroparameter changes: an analysis of survivorship and individual growth in sea urchin life histories

   • Thomas A. Ebert

   Original Papers Pages: 461 - 467

2. Dispersal and the microtine cycle: comparison of two hypotheses

   • Helena Warkowska-Dratnal
   • Nils Chr. Stenseth

   Original Papers Pages: 468 - 477

3. Interactive regulation of grass yield and chemical properties by defoliation, a salivary chemical, and inorganic nutrition

   • S. J. McNaughton

   Original Papers Pages: 478 - 486

4. Differential response of Daphnia genotypes to oxygen stress: respiration rates, hemoglobin content and low-oxygen tolerance

   • Lawrence J. Weider
   • Winfried Lampert

   Original Papers Pages: 487 - 491

5. Prey selection by the copepod Diacyclops thomasi

   • Richard S. Stemberger

   Original Papers Pages: 492 - 497

6. Interspecific predation as a mortality factor among overwintering spiders

   • Bengt Gunnarsson

   Original Papers Pages: 498 - 502

7. Moose-wolf dynamics and the natural regulation of moose populations

   • François Messier
   • Michel Crête

   Original Papers Pages: 503 - 512

8. On the importance of carrion to reproduction in an omnivorous estuarine neogastropod, Ilyanassa obsoleta (Say)

   • L. E. Hurd

   Original Papers Pages: 513 - 515

9. Asexual reproduction and genetic determination of growth form in the coral Pavona cactus: biochemical genetic and immunogenic evidence

   • Bette L. Willis
   • David J. Ayre

   Original Papers Pages: 516 - 525

10. Ground-feeding migratory songbirds as cellular slime mold distribution vectors

    • Hannah Bonsey Suthers

    Original Papers Pages: 526 - 530

11. Drought and changes in leaf orientation for two California chaparral shrubs: Ceanothus megacarpus and Ceanothus crassifolius

    • J. P. Comstock
    • B. E. Mahall

    Original Papers Pages: 531 - 535

12. δ¹³C-variations of leaves in forests as an indication of reassimilated CO₂ from the soil

    • G. H. Schleser
    • R. Jayasekera

    Original Papers Pages: 536 - 542

13. Effects of food quality, particularly nitrogen concentrations, of Eucalyptus blakelyi foliage on the growth of Paropsis atomaria larvae (Coleoptera: Chrysomelidae)

    • C. P. Ohmart
    • L. G. Stewart
    • J. R. Thomas

    Original Papers Pages: 543 - 549

14. Food partitioning and community organization in a mountain lizard guild of Northern Mexico

    • R. Barbault
    • A. Ortega
    • M. E. Maury

    Original Papers Pages: 550 - 554

15. Wild and cultivated barleys show similar affinities for mineral nitrogen

    • Arnold J. Bloom

    Original Papers Pages: 555 - 557

16. Patch dynamics of a foraging assemblage of bees

    • David Hamilton Wright

    Original Papers Pages: 558 - 565

17. Respiratory studies on two benthic copepods Acanthocyclops viridis and Eucyclops agilis at environmental temperatures

    • Johanna Laybourn-Parry
    • Stuart Tinson

    Original Papers Pages: 566 - 572

18. Seasonal diurnal acid rhythms in two aquatic crassulacean acid metabolism plants

    • Harry L. Boston
    • Michael S. Adams

    Original Papers Pages: 573 - 579

19. Are chemical barriers necessary for evolution of butterfly-plant associations?

    • John T. Smiley

    Original Papers Pages: 580 - 583

20. Colour and size of flowers in relation to pollination of Erica species

    • A. G. Rebelo
    • W. R. Siegfried

    Original Papers Pages: 584 - 590

21. Competition between herbivourous fishes and urchins on Caribbean reefs

    • Mark E. Hay
    • Phillip R. Taylor

    Original Papers Pages: 591 - 598

22. Aerotaxis by the freshwater oligochaete Tubifex sp.

    • P. Famme
    • J. Knudsen

    Original Papers Pages: 599 - 601