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Chemical interference among plants mediated by grazing insects

A reassessment


A recent paper has proposed that frass produced by eucalypt-defoliating insects has allelopathic effects on herbaceous plants growing under the canopies of woodland eucalypts. Insect frass fall under woodland eucalypts may have been overestimated, however. Alternative estimates of frass fall are presented and it is proposed that these levels are too low to have a significant impact on the kinds of herbaceous plant species occuring under woodland eucalypts.

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  1. Attiwill PM (1979) Nutrient cycling in a Eucalyptus obliqua (L'Herit.) forest. III. Growth, biomass and net primary productivity. Aust J Bot 27:439–458

  2. Feller MC (1980) Biomass and nutrient distribution in two eucalypt forest ecosystems. Aust J Ecol 5:309–333

  3. Fox LR, Morrow PA (1983) Estimates of damage by herbivorous insects on Eucalyptus trees. Aust J Ecol 8:139–147

  4. Hamilton CD (1972) The nature and causes of spatial variation in forest ecosystems. PhD Thesis, Australian National University. p 402

  5. Hilder EJ, Mottershead BE (1963) The redistribution of nutrients through free grazing sheep. Aust J Sci 26:88–89

  6. Hingston FJ, Dimmock GM, Turton AG (1981) Nutrient distribution in a jarrah (Eucalyptus marginata Donn Ex Sm.) ecosystem in south-west Western Austalia. For Ecol Manage 3:183–207

  7. Jacobs MR (1955) Growth habits of the Eucalpts. For & Timber Bur, Comm Gov Printers, Canberra

  8. Landsberg J, Wylie FR (1983) Water stress, leaf nutrients, and defoliation: a model of dieback of rural eucalypts. Aust J Ecol 8:27–41

  9. Morrow PA (1977) The significance of phytophagous insects in the Eucalyptus forests of Australia. In: Mattson W (ed) The role of arthropods in forest ecosystems. Springer-Verlag, New York

  10. Ohmart CP, Stewart LG Thomas JR (1983a) Leaf consumption by insects in three Eucalyptus forest types in south-eastern Australia and their role in short-term nutrient cycling. Oecologia (Berl) 59:322–330

  11. Ohmart CP Stewart LG, Thomas JR (1983b) Phytophagous insect communities in the canopies of three Eucalyptus forest types in south-eastern Australia. Aust J Ecol 8:395–403

  12. Ohmart CP (1984) Is insect defoliation in cucalypt forests greater than that in other temperate forests? Aust J Ecol (in press)

  13. Silander JA, Trenbath BR, Fox LR (1983) Chemical interference among plants mediated by grazing insects. Oecologia (Berl) 58:415–417

  14. Slansky FS jr, Scriber JM (1982) Selected bibliography and summary of quantitative food utilization by immature insects. Bull Ent Soc Amer 28:43–55

  15. Stewart HTL, Flinn DW, Aeberli BC (1979) Above-ground biomass of a mixed eucalypt forest in eastern Victoria. Aust J Bot 27:725–740

  16. Trenbath BR, Silander JA (1980) The effects of insect frass falling from Eucalyptus globulus ssp. bicostata on associated vegetation. Aust Seed Sci Newsl 6:13–18

  17. Woods PV, Raison RJ (1983) Decomposition of litter in sub-alpine forests of Eucalyptus pauciflora, E. dives and E. delegatensis. Aust J Ecol 8:287–300

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Ohmart, C.P. Chemical interference among plants mediated by grazing insects. Oecologia 65, 456–457 (1985).

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  • Plant Species
  • Herbaceous Plant
  • Alternative Estimate
  • Allelopathic Effect
  • Herbaceous Plant Species