1. Why does the bud-galling sawfly, Euura mucronata, attack long shoots?

   • P. W. Price
   • H. Roíninen
   • J. Tahvanainen

   Original Papers Pages: 1 - 6

2. Habitat shifts in rainbow trout: competitive influences of brown trout

   • A. J. Gatz Jr
   • M. J. Sale
   • J. M. Loar

   Original Papers Pages: 7 - 19

3. Bumble bee behavior and selection on flower size in the sky pilot, Polemonium viscosum

   • C. Galen
   • M. E. A. Newport

   Original Papers Pages: 20 - 23

4. Genetic differences and phenotypic plasticity as causes of variation in oviposition preference in Battus philenor

   • D. R. Papaj
   • M. D. Rausher

   Original Papers Pages: 24 - 30

5. Control of fecundity through abortion in Epilobium montanum L.

   • J. L. Harper
   • H. L. Wallace

   Original Papers Pages: 31 - 38

6. Do nymphs of Parameletus chelifer and P. minor (Ephemeroptera) reduce mortality from predation by occupying temporary habitats?

   • O. Söderström
   • A. N. Nilsson

   Original Papers Pages: 39 - 46

7. Stopover and fat deposition by North American wood-warblers (Parulinae) following spring migration over the Gulf of Mexico

   • F. Moore
   • P. Kerlinger

   Original Papers Pages: 47 - 54

8. Host-plant selection, diet diversity, and optimal foraging in a tropical leafcutting ant

   • L. L. Rockwood
   • S. P. Hubbell

   Original Papers Pages: 55 - 61

9. Stomatal and photosynthetic responses during sun/shade transitions in subalpine plants: influence on water use efficiency

   • A. K. Knapp
   • W. K. Smith

   Original Papers Pages: 62 - 67

10. Pollination thoroughness and maternal yield regulation in wild radish, Raphanus raphanistrum (Brassicaceae)

    • M. L. Stanton
    • J. K. Bereczky
    • H. D. Hasbrouck

    Original Papers Pages: 68 - 76

11. The effect of simulated acid rain on performance of the aphid Euceraphis betulae (Koch) on silver birch

    • S. Neuvonen
    • M. Lindgren

    Original Papers Pages: 77 - 80

12. Leaf water relations and anatomy of a tropical rainforest tree species vary with crown position

    • B. J. Myers
    • R. H. Robichaux
    • I. E. Craig

    Original Papers Pages: 81 - 85

13. Sarcocystis cernae: A parasite increasing the risk of predation of its intermediate host, Microtus arvalis

    • I. Hoogenboom
    • C. Dijkstra

    Original Papers Pages: 86 - 92

14. Defensive strategies of soft corals (Coelenterata: Octocorallia) of the Great Barrier Reef

    • P. W. Sammarco
    • S. La Barre
    • J. C. Coll

    Original Papers Pages: 93 - 101

15. Non-random distribution patterns of leaf miners on oak trees

    • P. D. Stiling
    • D. Simberloff
    • L. C. Anderson

    Original Papers Pages: 102 - 105

16. Seed selection by dark-eyed juncos (Junco hyemalis): optimal foraging with nutrient constraints?

    • D. B. Thompson
    • D. F. Tomback
    • M. C. Baker

    Original Papers Pages: 106 - 111

17. Ecological energetics of Central European grasshoppers (Orthoptera: Acrididae)

    • G. Köhler
    • H. -P. Brodhun
    • G. Schäller

    Original Papers Pages: 112 - 121

18. Seasonal changes of ionic concentrations in the vacuolar sap of Chara vulgaris L. growing in a brackish water lake

    • U. Winter
    • M. I. B. Meyer
    • G. O. Kirst

    Original Papers Pages: 122 - 127

19. Size and fecundity hierarchies in an herbaceous perennial

    • S. M. Scheiner

    Original Papers Pages: 128 - 132

20. Desiccation tolerant plants in South America

    • D. F. Gaff

    Original Papers Pages: 133 - 136

21. Effects of simulated feeding by snow geese on Scirpus americanus rhizomes

    • J. -F. Giroux
    • J. Bédard

    Original Papers Pages: 137 - 143

22. Chemical analysis of phenolic glycosides: art, facts, and artifacts

    • R. L. Lindroth
    • M. S. Pajutee

    Original Papers Pages: 144 - 148

23. The consequences of leaf damage for subsequent insect grazing on birch (Betula spp.)

    • B. E. Silkstone

    Original Papers Pages: 149 - 152

24. Do pupal predators regulate the winter moth?

    • J. Latto
    • M. P. Hassell

    Short Communications Pages: 153 - 155

25. On the stabilizing effect of density-dependent mortality factors

    • H. J. Pocthke
    • M. Kirchberg

    Short Communications Pages: 156 - 158

26. Comments on Wilson's Null Model

    • M. E. Gilpin
    • J. M. Diamond

    Reply Pages: 159 - 160