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Michael M Fuller

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collared dove
Florida water snake

The Eurasian collared dove (Streptopelia decaocto) spread from introduced populations in the Bahamas to Florida in the 1980s. It has been spreading rapidly across North America, though it's abundance is much higher in some regions than in others. I worked with colleagues at the University of Tennessee to develop a mathematical model, based on integro-difference equations, to forecast the spread of the collared dove. Our model uses latitudinal variation in the growing season length to project the speed and ultimate northern extent of the collared dove in North America. For more information, go here (or click photo).

Several water snake species native to the eastern US (Nerodia spp.) have established populations within freshwater wetlands in California. Locations include the Sacramento area (Folsom, Elk Grove, Roseville) and Los Angeles area (Kenneth Malloy Regional Park, in Harbor City). These transplanted snakes pose a potential threat to native wildlife. I work with biologists from several resource management agencies and universities to track the spread of these non-native species. Please visit the California Nerodia Site for more information (or click photo).