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- Johnson, Marc T. J.
- Ecology 2008 v.89 no.1 pp. 145-154
- Aphis (Aphididae), etc ; plant genetics; phytophagous insects; plant-insect relations; regression analysis; field experimentation; Oenothera biennis; mutualism; genotype; population density; population growth; Crematogaster; predator-prey relationships; Ontario; Show all 14 Subjects
- ... Theory predicts that bottom‐up ecological forces can affect community dynamics, but whether this extends to the effects of heritable plant variation on tritrophic communities is poorly understood. In a field experiment, I contrasted the effects of plant genotype (28 genotypes; 1064 plants), aphid density, and the presence/absence of mutualistic ants in affecting the per capita population growth of ...