How movement across landscapes mediates species-resource interactions

This thesis explores how movement across spatially explicit landscapes mediates species-resource interactions. Firstly, I model pollinator foraging across agricultural landscapes, looking at the effect of different movement strategies on plant-pollinator dynamics. I also examine the effect of hedgerow spatial distributions and value on crop pollination. I find that a simple exponential foraging model serves as a reasonable approximation for more complex bee foraging, whether or not hedgerows are higher value than the crops that they surround. I find that when pollinators cannot nest in crop regions, crop pollination is more complete with increasing hedgerow size, with little effect of fragmentation. Secondly, I look at the evolution of over-exploitation of prey by predators in a patchy landscape with varying amounts of connectivity. I find that as the landscape becomes more structured, either through increasing the number of connected patches or decreasing the connectivity between patches, predator populations do not decline as much while evolving.