Evolution in the Genus Bufo PDF Download
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Author: W. Frank Blair
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 492
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Author: W. Frank Blair
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 492
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Book Description
Author: David P. Badger
Publisher:
ISBN: 9781610603911
Category : Frogs
Languages : en
Pages : 156
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Book Description
Showcases a select group of over fifty frogs and toads chosen for their unusual markings, calls, poisons or behavior, and includes frogs and toads from North and South America, Africa, Australia, Europe and Asia.
Author: Gary Urton
Publisher: University of Texas Press
ISBN: 0292790511
Category : Social Science
Languages : en
Pages : 247
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Book Description
Above Misminay, the sky also is so divided by the alternation of the two axes of the Milky Way passing through the zenith. This mirror-image quadri-partition of terrestrial and celestial spheres is such that a point within one of the quarters of the earth is related to a point within the corresponding celestial quarter. The transition between the earth and the sky occurs at the horizon, where sacred mountains are related to topographic and celestial features. Based on fieldwork in Misminay, Peru, Gary Urton details a cosmology in which the Milky Way is central. This is the first study that provides a description and analysis of the astronomical and cosmological system in a contemporary community in the Americas. Separate chapters take up the sun, the moon, meteorological phenomena, the stars, and the planets. Star-to-star constellations, the "animal" dark-cloud constellations that cut through the Milky Way, and certain twilight- and midnight-zenith stars are analyzed in terms of their spatial and temporal integration within an indigenous cosmological framework. Urton breaks new ground by demonstrating the indigenous merging of such forms of "precise knowledge" as astronomy, meteorology, agriculture, and the correlation of astronomical and biological cycles within a single calendar system. More than sixty diagrams clarify this Quechua system of astronomy and relate it to more familiar principles of Western astronomy and cosmology.
Author: Francis R. Cook
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 104
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Book Description
This study attempts to clarify the relationship and interaction between B. americanus and B. hemiophrys. Also discussed are comparisons between the B. americanus-hemiophrys complex and samples of B. w. woodhousei, B. w. fowleri, B. cognatus and B. boreas.
Author: American Society of Ichthyologists and Herpetologists. Herpetological Catalogue Committee
Publisher:
ISBN:
Category : Reptiles
Languages : en
Pages : 750
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Author: United States. Department of the Interior. Library
Publisher:
ISBN:
Category : Library catalogs
Languages : en
Pages : 706
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Author: Brian R. Chapman
Publisher: Texas A&M University Press
ISBN: 1623495733
Category : Nature
Languages : en
Pages : 752
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Book Description
From two veteran ecologists comes a new and sweeping exploration of the natural history of Texas in all its biological diversity and geological variation. Few states, if any, can match Texas for its myriad species, past and present, and its many distinctive landscapes, from prairie grasslands and hardwood forests to coastal lagoons and desert mountains. Beginning with the stories of how biologists and naturalists have over time defined the ecological areas of this very big state, the authors visit each of the eleven regions, including the Texas coast. They describe the dominant flora and fauna of each, explain the defining geologic features, and highlight each region’s unique characteristics, such as carnivorous plants in the Piney Woods and returning black bears in the Trans-Pecos. Throughout, the authors remain especially conscious of the conservation and management issues affecting the natural resources of each region, revealing their deep affection for and knowledge about the state. Bolstered by a glossary, further reading suggestions, a description of state symbols, and an appendix of scientific names, this is an educational and essential volume for all Texans. ECOREGIONS Piney Woods Post Oak Savanna Blackland Prairies Cross Timbers and Prairies Rolling Plains Edwards Plateau High Plains Trans-Pecos South Texas Brushland Coastal Prairies Texas Gulf Coast
Author: David W. Goodall
Publisher: University of Texas Press
ISBN: 0292769628
Category : Science
Languages : en
Pages : 257
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Book Description
Written by specialists in the field, the papers in this volume explore evolution of animals and plants on the deserts of North America, South America, and Australia. Together, the articles constitute a complete survey of the geological history of the deserts of three continents, the evolution of the animals and plants of those deserts, and their adaptations to the environments in which they live. The first paper, by Otto T. Solbrig, discusses the flora of the South American temperate and semidesert regions, citing numerous genera and reasons that they are found in the different areas. John S. Beard uses the same approach in his discussion of the evolution of Australian desert plants and focuses on western Australian areas. Guillermo Sarmiento appraises the evolution of arid vegetation in tropical America, including the Lesser Antilles and the Coast Range of Venezuela and Colombia. A. R. Main surveys the adaptation of Australian vertebrates to desert conditions and gives examples of how various species of birds, reptiles, and amphibians adapt to their environment in order for the greatest number to survive. James A. MacMahon designates specific communities in the Mojave, Sonoran, and Chihuahuan deserts and discusses the similarity of species of the North American desert mammal faunas found there, while Bobbi S. Low focuses on the evolution of amphibian life histories in the desert and compiles a lengthy table of amphibia comparing egg size, habitat, number of eggs per clutch, and so forth. Finally, W. Frank Blair treats adaptation of anurans to equivalent desert scrub of North and South America and cites various species of frogs and toads that are found in similar areas. The volume also includes an introduction by the editor and an index. Evolution of Desert Biota is the result of a symposium held during the First International Congress of Systematic and Evolutionary Biology in Boulder, Colorado; in August 1973.
Author:
Publisher:
ISBN:
Category : Union catalogs
Languages : en
Pages : 664
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Author:
Publisher:
ISBN:
Category : American literature
Languages : en
Pages : 1662
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