By L. Lee Grismer
The Baja California peninsula is domestic to many sorts of existence stumbled on nowhere else on the earth. This, mixed with the peninsula's rugged and inaccessible terrain, has made the world one of many final actual organic frontiers of North the United States. L. Lee Grismer is not just the major authority at the amphibians and reptiles of Baja California, but additionally a very good photographer. He has produced the main entire paintings at the herpetofauna of the peninsula and its islands ever released. With its beautiful colour photographs, distinct bills of many little-known species, and outlines of the region's varied surroundings, this can be the definitive advisor to the amphibians and reptiles of a desirable and distant region.The fruits of Grismer's sector century of fieldwork at the Baja peninsula and his exploration of multiple hundred of its islands within the Pacific Ocean and the ocean of Cort?s, this ebook supplies info at the identity, distribution, average heritage, and taxonomy of every species of amphibian and reptile chanced on there. initial bills of the lifestyles historical past of some of the salamanders, frogs, toads, turtles, lizards, and snakes are pronounced the following for the 1st time, and several other species that have been virtually unknown to technology are illustrated in complete colour. The ebook additionally includes new information on species distribution and at the influence of the remoted panorama of the peninsula and its islands at the evolutionary method. a lot of the knowledge collected here's offered in biogeographical overviews that reflect on the tremendous diversified environments of Baja California in either a modern and a old framework. An unique and demanding contribution to technological know-how, this ebook will generate extra examine for years yet to come 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)
The Sierra la Laguna extends generally from La Paz to Cabo San Lucas, reaches over 2,100 m, and maintains an endemic pine-oak woodland at its upper elevations. Endemic to this region is a population of the small, secretive, and peculiar Desert Night Lizard (Xantusia vigilis). The last major type of habitat island in Baja California consists of widely scattered oases that extend fragmentedly for approximately 700 km from Misión San Fernando Velicatá in the north to at least the La Presa region in the south (Grismer and McGuire 1993).
Because these species are so widespread, it is exceedingly di‹cult to form viable hypotheses concerning their historical origin in Baja California. Finally, there is one other group of species whose relationships to other species remain obscure and of whose distribution our knowledge is incomplete. Before any reasonable hypotheses can be made regarding its evolutionary origin in Baja California, some of these issues must be more fully addressed. ECOLOGICAL BIOGEOGRAPHY Although some species of the Baja California herpetofauna are ubiquitous in distribution, many others can be placed into loosely-deﬁned ecological groups in accordance with their general natural history and distribution (Grismer 1994b; table 3).
All species (or monophyletic groups of endemic species) of this complex have close relatives in southwestern Mexico. Additionally, because of the Cape Region’s intermittent isolation from the more northerly portions of the peninsula, many of these forms have distinctive pattern classes, or in some cases sister species, in the southern portion of the peninsula, whose contact zones are generally situated around the Isthmus of La Paz. ). Many species were widespread in northern Baja California, southwestern United States, and northwestern Mexico when northern Baja California existed as a western extension of mainland Mexico.
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