1. Natal dispersal in relation to population density and sex ratio in the field vole, Microtus agrestis

   • M. Sandell
   • J. Agrell
   • J. Nelson

   Original Papers Pages: 145 - 149

2. Lizards reduce food consumption by spiders: mechanisms and consequences

   • David A. Spiller
   • Thomas W. Schoener

   Original Papers Pages: 150 - 161

3. Local adaptation and host race formation of a gall-forming aphid in relation to environmental heterogeneity

   • S. Akimoto

   Original Papers Pages: 162 - 170

4. Ecological significance of light controlled seed germination in two contrasting tropical habitats

   • C. Vàzquez-Yanes
   • A. Orozco-Segovia

   Original Papers Pages: 171 - 175

5. Differences in environmental response between the sexes of the dioecious shrub Baccharis halimifolia (Compositae)

   • Vera Aber Krischik
   • Robert F. Denno

   Original Papers Pages: 176 - 181

6. Patterns of growth, reproduction, defense, and herbivory in the dioecious shrub Baccharis halimifolia (Compositae)

   • Vera Aber Krischik
   • Robert F. Denno

   Original Papers Pages: 182 - 190

7. Pollen limitation and distance-dependent fecundity in females of the clonal gynodioecious herb Glechoma hederacea (Lamiaceae)

   • Björn Widén
   • Marie Widén

   Original Papers Pages: 191 - 196

8. Metabolic rates, food consumption and thermoregulation in seasonal acclimatization of the Cape porcupine Hystrix africaeaustralis

   • A. Haim
   • R. J. Van Aarde
   • J. D. Skinner

   Original Papers Pages: 197 - 200

9. Ecological and evolutionary importance of neighbors in the grass Anthoxanthum odoratum

   • G. A. J. Platenkamp
   • T. C. Foin

   Original Papers Pages: 201 - 208

10. Simulated acid rain reduces the susceptibility of the European pine sawfly (Neodiprion sertifer) to its nuclear polyhedrosis virus

    • S. Neuvonen
    • K. Saikkonen
    • E. Haukioja

    Original Papers Pages: 209 - 212

11. Seed predation by insects in tropical mangrove forests: extent and effects on seed viability and the growth of seedlings

    • A. I. Robertson
    • R. Giddins
    • T. J. Smith

    Original Papers Pages: 213 - 219

12. Patterns of coexistence in sexual and asexual species of Cnemidophorus lizards

    • Ted J. Case

    Original Papers Pages: 220 - 227

13. Evolution of thermal physiology and growth rate between populations of the western fence lizard (Sceloporus occidentalis)

    • Barry Sinervo

    Original Papers Pages: 228 - 237

14. Effects of nectar volume and concentration on sugar intake rates of Australian honeyeaters (Meliphagidae)

    • Randall J. Mitchell
    • David C. Paton

    Original Papers Pages: 238 - 246

15. Carbon isotope ratios are correlated with irradiance levels in the Panamanian orchid Catasetum viridiflavum

    • Jess K. Zimmerman
    • James R. Ehleringer

    Original Papers Pages: 247 - 249

16. Gas exchange and habitat selection in the aquatic salamanders Necturus maculosus and Cryptobranchus alleganiensis

    • Gordon R. Ultsch
    • Jeffrey T. Duke

    Original Papers Pages: 250 - 258

17. A reexamination of hilltopping in Euphydryas editha

    • J. F. Baughman
    • D. D. Murphy
    • P. R. Ehrlich

    Original Papers Pages: 259 - 260

18. Olfactory conditioning during the recruitment process in a leaf-cutting ant

    • Flavio Roces

    Original Papers Pages: 261 - 262

19. Variation in the use of orchid extrafloral nectar by ants

    • Brian L. Fisher
    • Leonel da Silveira Lobo Sternberg
    • David Price

    Original Papers Pages: 263 - 266

20. Amphipods on seaweeds: partners or pests?

    • J. Emmett Duffy

    Original Papers Pages: 267 - 276

21. The relationship between seed dormancy, seed size and weediness, in Crepis tectorum (Asteraceae)

    • Stefan Anderson

    Original Papers Pages: 277 - 280

22. Role of plant abundance in determining the abundance of herbivorous insects

    • A. F. G. Dixon
    • P. Kindlmann

    Original Papers Pages: 281 - 283

23. Effects of larval diet on myrmecophilous qualities of Polyommatus icarus caterpillars (Lepidoptera: Lycaenidae)

    • Konrad Fiedler

    Original Papers Pages: 284 - 287

24. Dispersal and predation in alien Acacia

    • P. M. Holmes

    Short Communication Pages: 288 - 290