With this approach, conspicuous features have been discovered: Along the Pacific Coast, the predominant vegetation type chispas tropical deciduous forest high seasonalitywhereas, on the Gulf Coast, the dominant vegetation is evergreen forest low seasonality. The above analyses demonstrate that the diversity patterns, richness and endemism, vary depending on the spatial scale of analysis in herpdtofauna groups. To model ranges, there are a variety of algorithms that operate under different assumptions Peterson et al. Previous Issues — Mesoamerican Herpetology The percent of Chihuahuan species shared by a neighboring state are given in parentheses. The initials of the variables come from their Spanish translation. Map with locality records used to model the distribution areas.

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Daishicage Strong, but incomplete, mate choice discrimination between two closely related species of paper wasp. Annual Magazine of Natural History 15, No. We obtained geographical information for specimens of Mexican amphibians and reptiles from various museums. Close mobile search navigation Article navigation. In northwestern Chihuahua the occurrence of the Tiger Rattlesnake Crotalus tigris is expected.

Anderson CG, Greenbaum E. Stebbins indicates occurrence of this species in the extreme southeastern corner of Arizona, and in eastern Sonora near chiaaps Chihuahua border. In extreme southeastern Chihuahua the occurrence of the Mexican Black-headed Snake Tantilla atriceps is expected. Lithobates catesbeianus Shaw — Introduced. At the spatial scale of 0. Chihuahuan amphibians make up less of the species herpetofaunx, especially salamanders.

Hylinae in northeastern Honduras, with the resurrection of Hyla manisorum Taylor. Based on previous studies, we assume that, if the factors behind the patterns herpetoauna richness and endemism differ, these patterns at different scales do not necessarily have to retain similar congruence, because the causal factors of each pattern — richness or endemism — are operating at different scales.

This was accomplished with the help of Arc View 3. Occurrence in Chihuahua seems likely. We assume that two groups with different characteristics, particular ecological requirements and dissimilar evolutionary histories will not share richness and endemism patterns, and that the factors that influence their distribution and the structure of their communities will be different.

For reptiles, the richest areas 51—70 species are found from central Veracruz Los Tuxtlas region and central Guerrero Omiltemi—Chilpancingo region into southern Oaxaca and southward to central Chiapas Fig. Amphibians and reptiles of the state of Chihuahua, Mexico, with comparisons with adjoining states The role of spatial scale and the perception of large-scale species richness patterns.

Townsend, and Claus Bo P. Chihuahua is the largest state in Mexico. Four of these six canyons are deeper than the Grand Canyon, some by over m. The goal of this study is to independently analyse the influence of spatial scale on patterns of richness and endemism of Mexican amphibians and reptiles and then to compare these two groups herpetofaunq vertebrates.

COI barcoding suggests underestimated taxonomic richness in a threatened endemic fauna. Conant and Collins depicted the southern part of the Big Bend region of Texas as part of the range herpetofajna the Reticulate Banded Gecko Coleonyx reticulatus. GWRs between richness and endemism, richness and latitude, and endemism and latitude follow the same pattern, decreasing as the spatial scale decreases.

The known range of this species comes close to the southeastern corner of the state Cole and HardyConant and Chiapad We also determined the number of overlapping species between each of these states and Chihuahua. Even beyond these species and families, the environment and habitats of Herpeofauna are subject to anthropogenic change, such as construction of border fences Lasky et al.

Lemos-Espinal1 Geoffrey R. Intersections of each class were subsequently performed with grids in Arc View 3. Distributional patterns of the herpetofauna of Mesoamerica, a biodiversity hotspot. Patrones de diversidad espacial en grupos selectos de especies. There was a problem providing the content you requested Courier Forschungsinstitut Senckenberg SmithaLemos-Espinal et al. The remaining two species of turtles are widely distributed from southern Canada to northern Mexico Chrysemys picta and from southeastern Sonorathrough the Pacific Coast, to Costa Rica Rhinoclemmys chapas.

In the case of Mexico, where the herpetofaunal patterns show highest richness in the south, this is the portion of the country in which the mainland is narrower, and so it is reasonable to rule out this hypothesis. The average of the local r 2 and the standard deviations from the GWR are reported to represent the general pattern. Related Posts.



Este sitio se localiza entre la costa y la Sierra Madre de Chiapas a msnm. La herpetofauna estuvo representada por 61 especies 12 anfibios y 49 reptiles. Casazza, G. Clarke, K.


Bralabar As the determination of endemism in this case is referred to a political entity, it makes sense that the ranges of most endemic species do not coincide with political boundaries. It is likely that at least four other turtle species occur in Chihuahua. Further, five small areas are notable for their richness in reptiles 51—70 species: Published online Feb Cniapas in a separate window. Previous Issues — Mesoamerican Herpetology There are endemic species of reptile in Mexico, and available records allowed us to model of these. Conservation planning under climate change: Flores-Villela; Patterns of richness and endemism of the Mexican herpetofauna, a matter of spatial scale? Cornell University Press, Ithaca, pp. Sierra del Nido, Chihuahua.

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