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Summer drought alters plant-mediated competition between foliar- and root-feeding insects

Staley, J. T., Mortimer, S. R. ORCID:, Morecroft, M. D., Brown, V. K. and Masters, G. J. (2007) Summer drought alters plant-mediated competition between foliar- and root-feeding insects. Global Change Biology, 13 (4). pp. 866-877. ISSN 1354-1013

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To link to this item DOI: 10.1111/j.1365-2486.2007.01338.x


Summer droughts are predicted to increase in severity and frequency in the United Kingdom, due to climate change. Few studies have addressed the impacts of drought on interactions between species, and the majority have focussed on increases in CO2 concentration and changes in temperature. Here, the effect of experimental summer drought on the strength of the plant-mediated interaction between leaf-mining Stephensia brunnichella larvae and root-chewing Agriotes larvae was investigated. Agriotes larvae reduced the abundance and performance of S. brunnichella feeding on a mutual host plant, Clinopodium vulgare, as well as the rate of parasitism of the leaf-miner. The interaction did not, however, occur on plants subjected to a severe drought treatment, which were reduced in size. Changes to summer rainfall, due to climate change, may therefore reduce the occurrence of plant-mediated interactions between insect herbivores.

Item Type:Article
Divisions:Life Sciences > School of Agriculture, Policy and Development
Interdisciplinary centres and themes > Soil Research Centre
ID Code:9210
Uncontrolled Keywords:aboveground, belowground, drought, experimental manipulation, foliar, feeder, indirect competition, leaf-miner, parasitoid, root feeder, wireworm, BELOW-GROUND HERBIVORY, HOST-PLANT, CLIMATE-CHANGE, LEAF DAMAGE, COMMUNITY DYNAMICS, PERFORMANCE, CO2, PARASITOIDS, GRASSLAND, RESPONSES

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