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    Author(s): Emily K. Heyerdahl; Ernesto Alvarado
    Date: 2003
    Source: In: Veblen, T. T.; Baker, W. L.; Montenegro, G.; Swetnam, T. W., eds. Fire and climatic change in temperate ecosystems of the western Americas. New York: Springer-Verlag. Ecological Studies. 160: 196-217
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (235 B)

    Description

    The rugged mountains of the Sierra Madre Occidental, in north-central Mexico, support a mosaic of diverse ecosystems. Of these, the high-elevation, temperate pine-oak forests are ecologically significant for their extensiveness and biodiversity. They cover nearly half the land area in the states of Durango and Chihuahua (42%), and comprise a similar percentage of the temperate coniferous forest in Mexico as a whole (45%; World Forest Institute 1994; SARH 1994). These forests are globally significant centers of vascular plant diversity, and of endemism in both plant and animal species (Bye 1993; Manuel-Toledo and Jesús-Ordóñez 1993). For example, they have the highest number of pine and oak species in the world (Rzedowski 1991) and contain many of Mexico's Pinus, Quercus, and Arbutus species (33%, 30%, and 66%, respectively; Bye 1995). Surface fires were historically frequent in these forests, and variations in their frequency may have contributed to the maintenance of this biodiversity (Dieterich 1983; Fulé and Covington 1997, 1999; Park 2001). However, we know little about the drivers of variation in historical fire regimes.

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    Citation

    Heyerdahl, Emily K.; Alvarado, Ernesto. 2003. Influence of climate and land use on historical surface fires in pine-oak forests, Sierra Madre Occidental, Mexico. In: Veblen, T. T.; Baker, W. L.; Montenegro, G.; Swetnam, T. W., eds. Fire and climatic change in temperate ecosystems of the western Americas. New York: Springer-Verlag. Ecological Studies. 160: 196-217

    Keywords

    climate, land use, surface fires, pine-oak forests, Sierra Madre Occidental, Mexico

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