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

Staley, Joanna T.; Mortimer, Simon R.; Morecroft, Michael D.; Brown, Valerie K.; Masters, Gregory J.. 2007 Summer drought alters plant-mediated competition between foliar- and root-feeding insects. Global Change Biology, 13. 866-877.

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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: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Biodiversity
UKCEH and CEH Sections/Science Areas: Parr
ISSN: 1354-1013
Format Availability: Electronic, Print
Additional Keywords: climate change, drought, experimental manipulation, foliar feeder, indirect competition, leaf-miner, parasitoid, root feeder, wireworm
NORA Subject Terms: Meteorology and Climatology
Ecology and Environment
Date made live: 01 Aug 2007 11:56 +0 (UTC)

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