Abstract
This proposal emphasizes ecological aspects of plant-insect interactions, especially complex patterns and processes mediated through plant quality. The overall aim of the research is to achieve a deeper understanding of how plant heterogeneity affects interactions with higher trophic levels to develop novel ideas for an effective pest control that can be used in crop production. I propose to study plant-insect interactions and adaptations to plant resistance at different hierarchical genetic levels; between plant species, between plant genotypes and within plant genotypes to provide new insights on the role of genetic plant diversity in biological pest control. Effects of genotypic plant diversity on associated species are poorly understood, especially the effect on insect population dynamics. To fil the gap I will use a combination of methods; inventories estimating patterns in nature, in-depth experiments studying mechanisms behind plant-insect interactions and mathematical modeling to assess population dynamics in theory. As a model system I will use Salix. Biomass from Salix is an important source of renewable energy for power and heat generation and the use of woody biomass instead of fossil fuel can be a major contributor to achieving Swedish energy and environmental directives. However, plant damages following feeding by herbivorous insects, can lead to great production losses. To maximize yields, we therefore need sustainable methods to prevent insect outbreaks.
Sweden