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Michael M Fuller

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Work in progress. Last updated: February 27, 2007.
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. We developed a mathematical model, using integro-difference equations, to project 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).

The Florida water snake (Nerodia fasciata pictiventris) has been introduced to at least two wetlands in California: the Sacramento River near Folsom and Machado Lake, in Harbor City. For more information, click here (or click photo).