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1 December 2010 Herpetofauna Associated with Palm Oases Across the Californian-Sonoran Transition in Northern Baja California, Mexico
Hartwell H. Welsh, William H. Clark, Ernesto Franco-Vizcaíno, Jorge H. Valdéz-Villavicencio
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Abstract

Ecological boundaries have been of interest to naturalists since the time of Darwin and Wallace because they are transitional zones on the landscape across which distinct changes occur in constitution of plant and animal communities. In the xeric landscapes of the central Baja California Peninsula, fan palm (Erythea armata and Washingtonia robusta) oases are small (usually <1 ha) mesophilic islands of structurally complex habitats. We report new records of mesophilic reptiles and amphibians from the adjacent Californian biome in palm groves of the Sonoran region; these highly philopatric species provide evidence of earlier cooler and moister Pleistocene environments. The fan palm oases of the central Baja California Peninsula are natural laboratories for the study of evolutionary processes because they provide unique mesic habitats in a changing desert landscape.

Hartwell H. Welsh, William H. Clark, Ernesto Franco-Vizcaíno, and Jorge H. Valdéz-Villavicencio "Herpetofauna Associated with Palm Oases Across the Californian-Sonoran Transition in Northern Baja California, Mexico," The Southwestern Naturalist 55(4), 581-585, (1 December 2010). https://doi.org/10.1894/PAS-15.1
Received: 8 December 2008; Accepted: 1 April 2010; Published: 1 December 2010
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