| Sumario: | Mortality in six plant species was examined in the vegetation of a mountain
region in Northeastern Mexico and hypotheses of survival pathways within populations in
the ecosystem were tested. Signifi cant differences in the general mortality pattern were
found among species indicating species-specifi c responses to stress gradients. Average
mortality differed among species: Yucca carnerosana, 33.8%; Pinus cembroides, 29.9%;
Larrea tridentata, 25.9%; Hechtia podantha, 13.7%; Agave lechuguilla, 13.0%; and Thelocactus
santaclarensis, 9.0%. Within populations, mortality increased with water stress
and survivorship increased with less stressful environments. Results from this study may
be useful for the development of a management plan to support the conservation and sustainable
use of forest vegetation in this mountain community
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