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Publication Distribution of plants in a California serpentine grassland: Are rocky hummocks spatial refuges for native species?
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Publication Plant diversity, composition, and invasion of restored and natural prairie pothole wetlands: Implications for restoration
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Publication Extinction rates under nonrandom patterns of habitat loss
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Publication Topological approaches to food web analyses: A few modifications may improve our insights
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Publication The role of pocket gophers as subterranean ecosystem engineers
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Publication Waves of Larch Budmoth outbreaks in the European Alps
Spatially extended population models predict complex spatiotemporal patterns, such as spiral waves and spatial chaos, as a result of the reaction-diffusion dynamics that arise from trophic interactions. However, examples of such patterns in ecological systems are scarce. We develop a quantitative technique to demonstrate the existence of waves in Central European larch budmoth (Zeiraphera diniana Gn.) outbreaks. We show that these waves travel toward the northeast-east at 210 kilometers per year.
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Publication Measuring mast seeding behavior: Relationships among population variation, individual variation and synchrony
Mast seeding, or masting, is the variable production of flowers, seeds, or fruit across years more or less synchronously by individuals within a population. A critical issue is the extent to which temporal variation in seed production over a collection of individuals can be viewed as arising from a combination of individual variation and synchrony among individuals. Studies of masting typically quantify such variation in terms of the coefficient of variation (CV).
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Publication Dissecting components of population-level variation in seed production and the evolution of masting behavior
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Publication Within-population spatial synchrony in mast seeding of North American oaks