1. Testing a new hypothesis: plant vigor and phylloxera distribution on wild grape in Arizona

   • Diana N. Kimberling
   • Eric R. Scott
   • Peter W. Price

   Original Papers Pages: 1 - 8

2. Effects of simulated root herbivory and fertilizer application on growth and biomass allocation in the clonal perennialSolidago canadensis

   • B. Schmid
   • S. L. Miao
   • F. A. Bazzaz

   Original Papers Pages: 9 - 15

3. Metabolic oxygen regulation and conformity during submergence in the salamandersSiren lacertina, Amphiuma means, andAmphiuma tridactylum, and a comparison with other giant salamanders

   • Jeffrey T. Duke
   • Gordon R. Ultsch

   Original Papers Pages: 16 - 23

4. Seed yield, seed size and germination behaviour in the annualPogogyne abramsii

   • Charles Zammit
   • Paul H. Zedler

   Original Papers Pages: 24 - 28

5. Resource heterogeneity and community structure: A case study inHeliconia imbricata Phytotelmata

   • Shahid Naeem

   Original Papers Pages: 29 - 38

6. Trade-offs in the response of mayflies to low oxygen and fish predation

   • Frank J. Rahel
   • Cynthia S. Kolar

   Original Papers Pages: 39 - 44

7. Density dependence and regulation in the systemNezara viridula (L.) (Hemiptera: Pentatomidae), host andTrichopoda giacomellii (Blanchard) (Diptera: Tachinidae), parasitoid

   • Gerardo Liljesthröm
   • Carlos Bernstein

   Original Papers Pages: 45 - 52

8. Preference of cabbage white butterflies and honey bees for nectar that contains amino acids

   • Janis Alm
   • Thomas E. Ohnmeiss
   • Lauren Vriesenga

   Original Papers Pages: 53 - 57

9. The foraging kinetics of ground ant communities in different mexican coffee agroecosystems

   • D. Nestel
   • F. Dickschen

   Original Papers Pages: 58 - 63

10. Cuticular water loss unlikely to explain tree-line in Scotland

    • John Grace

    Original Papers Pages: 64 - 68

11. Reproduction and the energy cost of defense in a Batesian mimicry complex

    • Martin Hetz
    • C. N. Slobodchikoff

    Original Papers Pages: 69 - 73

12. Regulation of reproduction in wild and cultivatedLycopersicon esculentum Mill. by vesicular-arbuscular mycorrhizal infection

    • David R. Bryla
    • Roger T. Koide

    Original Papers Pages: 74 - 81

13. Role of mycorrhizal infection in the growth and reproduction of wild vs. cultivated plants

    • David R. Bryla
    • Roger T. Koide

    Original Papers Pages: 82 - 92

14. Autumnal leaf conductance and apparent photosynthesis by saplings and sprouts in a recently disturbed northern hardwood forest

    • Jeffrey S. Amthor
    • David S. Gill
    • F. Herbert Bormann

    Original Papers Pages: 93 - 98

15. Crassulacean acid metabolism in selected terrestrial succulents in southeastern Jamaica, including two species in the Commelinaceae

    • Craig E. Martin
    • Valerie S. Loeschen
    • Lloyd B. Coke

    Original Papers Pages: 99 - 102

16. Sagebrush and grasshopper responses to atmospheric carbon dioxide concentration

    • R. H. Johnson
    • D. E. Lincoln

    Original Papers Pages: 103 - 110

17. The role of plant genotype, environment and gender in resistance to a specialist chrysomelid herbivore

    • Sharon Y. Strauss

    Original Papers Pages: 111 - 116

18. Thievery, home ranges, and nestmate recognition inEctatomma ruidum

    • Michael D. Breed
    • Paul Abel
    • Scott E. Denton

    Original Papers Pages: 117 - 121

19. Gall mite (Eriophyes laevis) infestation and leaf removal affect growth of leaf area in black alder (Alnus glutinosa) short shoots

    • Timo Vuorisalo
    • Mari Walls
    • Heikki Kuitunen

    Original Papers Pages: 122 - 125

20. The impact of selective logging on forest structure and tenrec populations in western Madagascar

    • J. U. Ganzhorn
    • A. W. Ganzhorn
    • A. Ramananjatovo

    Original Papers Pages: 126 - 133

21. Selection for an optimal monovoltine life cycle in an unpredictable environment. Studies on the beetleCatops nigricans Spence (Col., Catopidae)

    • W. Topp

    Original Papers Pages: 134 - 141

22. Enhancement of habitat heterogeneity and species richness on rocky shores inundated by sand

    • Christopher D. McQuaid
    • Katherine M. Dower

    Short Communication Pages: 142 - 144