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dc.creatorFagan, William F.
dc.creatorLewis, Mark A.
dc.creatorNeubert, Michael G.
dc.creatorAumann, Craig
dc.creatorApple, Jennifer L.
dc.creatorBishop, John G.
dc.description.abstractHere we study the spatial dynamics of a coinvading consumerresource pair. We present a theoretical treatment with extensive empirical data from a longstudied field system in which native herbivorous insects attack a population of lupine plants recolonizing a primary successional landscape created by the 1980 volcanic eruption of Mount St. Helens. Using detailed data on the life history and interaction strengths of the lupine and one of its herbivores, we develop a system of integrodifference equations to study plantherbivore invasion dynamics. Our analyses yield several new insights into the spatial dynamics of coinvasions. In particular, we demonstrate that aspects of plant population growth and the intensity of herbivory under lowdensity conditions can determine whether the plant population spreads across a landscape or is prevented from doing so by the herbivore. In addition, we characterize the existence of threshold levels of spatial extent and/or temporal advantage for the plant that together define critical values of invasion momentum, beyond which herbivores are unable to reverse a plant invasion. We conclude by discussing the implications of our findings for successional dynamics and the use of biological control agents to limit the spread of pest species.en_US
dc.publisherAmerican Naturalisten_US
dc.rightsIn copyright
dc.subjectPhysiological Ecology
dc.subjectSaint Helens, Mount (Wash.)
dc.titleWhen can herbivores reverse the spread of an invading plant? A test case from Mount St. Helens
dc.description.citationFagan, W.F., M. Lewis, M. Neubert, C. Aumann, J.L. Apple, and Bishop, J.G. 2005. When can herbivores reverse the spread of an invading plant? A test case from Mount St. Helens. American Naturalist 166: 669-685.

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  • Bishop, John
    This collection features scholarly work by John Bishop, professor in the School of Biological Sciences at Washington State University.

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