A PHyToGEoGRAPHiC AssEssMENT oF THE siERRA MADRE oRiENTAL PHysioGRAPHiC PRoViNCE, MEXiCo
Por:
Luis Villasenor, Jose, Ortiz, Enrique
Publicada:
1 oct 2021
Categoría:
Plant science
Resumen:
Background: Different regionalizations have been proposed for the Sierra
Madre Oriental (SMOR), but none of them have analyzed its full floristic
diversity. Hypothesis: The geographical distribution of the vascular
plant species of the SMOR allows the identification of floristic regions
with unique species that identify them as biogeographic units. Studied
species: Vascular plants. Study site: Sierra Madre Oriental
physiographic province, Mexico. Methods: Plant species distribution was
analyzed in 1 x 1 degrees latitude and longitude grid cells.
Characteristic species (those with half or more of their known
geographical distribution in Mexico in the SMOR) were identified, and a
classification method was applied to distinguish biogeo-graphic regions.
Results: 8,472 species were recorded in the Sierra Madre Oriental, 3,433
of them considered characteristics, of which 2,158 are endemic to Mexico
and 585 are considered strictly endemic to the province. The portions of
the SMOR in the states of Coahuila, Nuevo Leon, Tamaulipas, and San Luis
Potosi have a higher species richness and this richness decreases
towards the south of the province. Five floristic districts were
identified within the SMOR. Conclusions: The phytogeographic analysis
carried out and its comparison with other regionalizations shows there
is still disagreement in the biogeographic delimitation of the Sierra
Madre Oriental and to achieve this goal it is necessary to include
neighboring provinces in the analyzes, which will allow to identify
their unique species and define their biogeographic limits in a more
precise way.
Filiaciones:
Luis Villasenor, Jose:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Ciudad De Mexico, Mexico
Ortiz, Enrique:
Univ Nacl Autonoma Mexico, Inst Biol, Dept Bot, Ciudad De Mexico, Mexico
gold, All Open Access; Gold
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