Saguaro Distribution under Nurse Plants in Arizona's Sonoran Desert: Directional and Microclimate Influences*

@article{Drezner2003SaguaroDU,
  title={Saguaro Distribution under Nurse Plants in Arizona's Sonoran Desert: Directional and Microclimate Influences*},
  author={Taly Dawn Drezner and Colleen M. Garrity},
  journal={The Professional Geographer},
  year={2003},
  volume={55},
  pages={505 - 512}
}
Abstract The saguaro cactus, an icon of the American southwestern desert, defines the extent of the Sonoran Desert through portions of its range. Saguaros rely upon nurse plants for establishment and survival in the harsh temperature and moisture regime of the desert. Freezing temperatures limit the range of the saguaro to the north in Arizona. However, nurse plants extend the range of saguaros by providing more moderate conditions beneath their canopies. This study focuses on precisely these… 
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Interspecific morphological differences and intraspecific morphological changes with latitude were evaluated to help examine the distributional ranges of Carnegiea gigantea, Lemaireocereus thurberi,
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TLDR
If the northern limit of C gigantea reflects wintertime survival of juveniles, nurse plants could extend the range by offering some protection against freezing by extending the range of apical temperatures.
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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