Read e-book online Amphibians and Reptiles of Baja California, Including Its PDF

By L. Lee Grismer

ISBN-10: 0520224175

ISBN-13: 9780520224179

The Baja California peninsula is domestic to many kinds of lifestyles chanced on nowhere else in the world. This, mixed with the peninsula's rugged and inaccessible terrain, has made the world one of many final actual organic frontiers of North the USA. L. Lee Grismer isn't just the most important authority at the amphibians and reptiles of Baja California, but in addition an exceptional photographer. He has produced the main finished paintings at the herpetofauna of the peninsula and its islands ever released. With its lovely colour photographs, specific debts of many little-known species, and outlines of the region's different setting, this can be the definitive advisor to the amphibians and reptiles of a desirable and distant region.The fruits of Grismer's zone century of fieldwork at the Baja peninsula and his exploration of a couple of hundred of its islands within the Pacific Ocean and the ocean of Cort?s, this e-book supplies details at the identity, distribution, traditional background, and taxonomy of every species of amphibian and reptile stumbled on there. initial debts of the lifestyles background of some of the salamanders, frogs, toads, turtles, lizards, and snakes are stated right here for the 1st time, and several other species that have been virtually unknown to technological know-how are illustrated in complete colour. The e-book additionally includes new facts on species distribution and at the impression of the remoted panorama of the peninsula and its islands at the evolutionary approach. a lot of the data accumulated this is awarded in biogeographical overviews that examine the super various environments of Baja California in either a latest and a historic framework. An unique and demanding contribution to technological know-how, this e-book will generate additional learn for future years because it turns into a benchmark reference for either execs and amateurs.

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Additional resources for Amphibians and Reptiles of Baja California, Including Its Pacific Islands and the Islands in the Sea of Cortes (Organisms and Environments)

Sample text

This system is known to harbor the Northern Chuckwalla (Sauromalus obesus), Night Snake (Hypsiglena torquata), and Lyre Snake (Trimorphodon biscutatus). Conspicuously absent from all three of these mountain ranges are the common and widespread Central Baja California Banded Rock Lizard (Petrosaurus repens), Granite Spiny Lizard (Sceloporus orcutti), and Peninsular Leaf-Toed Gecko (Phyllodactylus xanti). Their absence may be explained by the fact that these ranges never had a rocky connection with the adjacent Peninsular Ranges.

Dispersal corridors are generally localized regions whose physiography and ecology allow certain groups of species access into regions where they would not occur without such corridors. Five such corridors occur in north- ern Baja California (see map 1). The first is an east to west–tending depression in the Peninsular Ranges known as Paso de San Matías. 5 km long. This pass separates the Sierra Juárez in the north, which reaches an elevation of 1,800 m, from the Sierra San Pedro Mártir in the south, which reaches 3,007 m.

The second form of habitat island harbors isolated populations of species on high mountaintops. In northern Baja California, examples include the upper elevations of the Sierra Juárez and Sierra San Pedro Mártir. -Mexican border, and the Sierra San Pedro Mártir reaches over 3,000 m elevation. Both are dominated by Baja California Coniferous Forest Region flora and offer refuge to some 37 The Herpetofauna sula, contacting the Gulf coast at Bahía de la Paz. These mountains may act as a dispersal barrier to certain species, denying them access to the low-lying Central Gulf Coast Region to the east.

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Amphibians and Reptiles of Baja California, Including Its Pacific Islands and the Islands in the Sea of Cortes (Organisms and Environments) by L. Lee Grismer

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