1. On the stabilization of animal numbers. Problems of testing

   • J. Reddingius
   • P. J. den Boer

   Original Papers Pages: 1 - 8

2. Photosynthesis and nitrogen relationships in leaves of C₃ plants

   • John R. Evans

   Original Papers Pages: 9 - 19

3. Growth and senescence in plant communities exposed to elevated CO₂ concentrations on an estuarine marsh

   • P. S. Curtis
   • B. G. Drake
   • D. F. Whigham

   Original Papers Pages: 20 - 26

4. Seasonal control over allocation to reproduction in a tussock-forming and a rhizomatous species of Eriophorum in central Alaska

   • A. F. Mark
   • F. S. Chapin III

   Original Papers Pages: 27 - 34

5. Seasonal and taxonomic aspects of the size of arthropods in the tropics and its possible influence on size-selectivity in the prey of a tropical spider community

   • Wolfgang Nentwig

   Original Papers Pages: 35 - 40

6. Structural analysis of the phytophagous insect guilds associated with the roots of Centaurea maculosa Lam. C. diffusa Lam., and C. vallesiaca Jordan in Europe:

   • Heinz Müller

   Original Papers Pages: 41 - 52

7. The cost of mutualism: interactions between Trollius europaeus and its pollinating parasites

   • Olle Pellmyr

   Original Papers Pages: 53 - 59

8. Niches and size relationships in Coleoptera associated with Cardueae host plants: adaptations to resource gradients

   • H. Zwölfer
   • R. Brandl

   Original Papers Pages: 60 - 68

9. Daily and seasonal activity in woodland ants

   • Joan H. Fellers

   Original Papers Pages: 69 - 76

10. Reproductive effort during gestation and lactation by Richardson's ground squirrels

    • Gail R. Michener

    Original Papers Pages: 77 - 86

11. The impact of ten years at -20°C on gas exchange in five lichen species

    • D. W. Larson

    Original Papers Pages: 87 - 92

12. Ecological tannin assays: a critique

    • Simon Mole
    • Larry G. Butler
    • Peter G. Waterman

    Original Papers Pages: 93 - 96

13. Exogenous inorganic carbon sources for photosynthesis in seawater by members of the Fucales and the Laminariales (Phaeophyta): ecological and taxonomic implications

    • Misni B. Surif
    • John A. Raven

    Original Papers Pages: 97 - 105

14. Facultative monophagy as a consequence of prior feeding experience: behavioral and physiological specialization in Colias philodice larvae

    • D. N. Karowe

    Original Papers Pages: 106 - 111

15. The effect of carbon supply on allocation to allelochemicals and caterpillar consumption of peppermint

    • D. E. Lincoln
    • D. Couvet

    Original Papers Pages: 112 - 114

16. The effect of increased nutrient availability on leaf turnover and aboveground productivity of two evergreen ericaceous shrubs

    • R. Aerts

    Original Papers Pages: 115 - 120

17. Evidence for an oviposition-deterring pheromone in Tephritis bardanae (Schrank) (Diptera: Tephritidae)

    • N. A. Straw

    Original Papers Pages: 121 - 130

18. The multiple decrement life table: a unifying framework for cause-of-death analysis in ecology

    • James R. Carey

    Original Papers Pages: 131 - 137

19. Parasites detect host spatial pattern and density: a field experimental analysis

    • Sally M. Blower
    • Jonathan Roughgarden

    Original Papers Pages: 138 - 141

20. An estimation of the heritability of phototaxis in Daphnia magna Straus

    • Luc De Meester

    Short Communication Pages: 142 - 144