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. We studied the effects of plant diversity on abundance of invertebrate herbivores, parasitoids and predators in two grassland communities (one in Switzerland and one in Sweden) in which plant species richness and functional diversity have been experimentally manipulated. Among herbivores, the abundance of only the most sessile and specialised groups (leafhoppers and wingless aphids) was affected...
Abstract. We studied the effects of plant diversity on abundance of invertebrate herbivores, parasitoids and predators in two grassland communities (one in Switzerland and one in Sweden) in which plant species richness and functional diversity have been experimentally manipulated. Among herbivores, the abundance of only the most sessile and specialised groups (leafhoppers and wingless aphids) was...
Plants in the Arctic and subarctic face the problems posed by herbivory in addition to short growth seasons, low temperatures and low nutrient availability. Herbivores control plant performance by removing biomass, by altering resource availability, by altering the physical environment, and by changing the balance of competition. The main difference between effects of herbivores in the Arctic and...
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