Origin And Evolution Of Deserts
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Origin And Evolution Of Deserts
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Author : Stephen G. Wells
language : en
Publisher:
Release Date : 1983
Origin And Evolution Of Deserts written by Stephen G. Wells and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Desertification categories.
Arabian Deserts
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Author : H. Stewart Edgell
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-07-21
Arabian Deserts written by H. Stewart Edgell and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-07-21 with Science categories.
This is the first comprehensive survey of all the deserts of Arabia, based largely on the author’s 50 years of experience there. The text deals with every kind of desert in the region, from vast sand seas to clay pans and stony plains to volcanic flows. Along with dune types unique to the region the author outlines climatic changes, current ecology and human influence on desertification.
Evolutionary Biogeography
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Author : Juan Morrone
language : en
Publisher: Columbia University Press
Release Date : 2009
Evolutionary Biogeography written by Juan Morrone and has been published by Columbia University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Science categories.
"Rather than favoring only one approach, Juan J. Morrone proposes a comprehensive treatment of the developments and theories of evolutionary biogeography. Evolutionary biogeography uses distributional, phylogenetic, molecular, and fossil data to assess the historical changes that have produced current biotic patterns. Panbiogeography, parsimony analysis of endemicity, cladistic biogeography, and phylogeography are the four recent and most common approaches. Many conceive of these methods as representing different "schools," but Morrone shows how each addresses different questions in the various steps of an evolutionary biogeographical analysis. Panbiogeography and parsimony analysis of endemicity are useful for identifying biotic components or areas of endemism. Cladistic biogeography uses phylogenetic data to determine the relationships between these biotic components. Further information on fossils, phylogeographic patterns, and molecular clocks can be incorporated to identify different cenocrons. Finally, available geological knowledge can help construct a geobiotic scenario that may explain how analyzed areas were put into contact and how the biotic components and cenocrons inhabiting them evolved. Morrone compares these methods and employs case studies to make it clear which is best for the question at hand. Set problems, discussion sections, and glossaries further enhance classroom use."--Publisher's description.
The Sonoran Desert Tortoise
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Author : Thomas R. Van Devender
language : en
Publisher: University of Arizona Press
Release Date : 2006-09-01
The Sonoran Desert Tortoise written by Thomas R. Van Devender and has been published by University of Arizona Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-09-01 with Science categories.
One of the most recognizable animals of the Southwest, the desert tortoise (Gopherus agassizii) makes its home in both the Sonoran and Mohave Deserts, as well as in tropical areas to the south in Mexico. Called by Tohono O'odham people "komik'c-ed," or "shell with living thing inside," it is one of the few desert creatures kept as a domestic petÑas well as one of the most studied reptiles in the world. Most of our knowledge of desert tortoises comes from studies of Mohave Desert populations in California and Nevada. However, the ecology, physiology, and behavior of these northern populations are quite different from those of their southern, Sonoran Desert, and tropical cousins, which have been studied much less. Differences in climate and habitat have shaped the evolution of three races of desert tortoises as they have adapted to changes in heat, rainfall, and sources of food and shelter as the deserts developed in the last ten million years. This book presents the first comprehensive summary of the natural history, biology, and conservation of the Sonoran and Sinaloan desert tortoises, reviewing the current state of knowledge of these creatures with appropriate comparisons to Mohave tortoises. It condenses a vast amount of information on population ecology, activity, and behavior based on decades of studying tortoise populations in Arizona and Sonora, Mexico, and also includes important material on the care and protection of tortoises. Thirty-two contributors address such topics as tortoise fossil records, DNA analysis, and the mystery of secretive hatchlings and juveniles. Tortoise health is discussed in chapters on the care of captives, and original data are presented on the diets of wild and captive tortoises, the nutrient content of plant foods, and blood parameters of healthy tortoises. Coverage of conservation issues includes husbandry methods for captive tortoises, an overview of protective measures, and an evaluation of threats to tortoises from introduced grass and wildfires. A final chapter on cultural knowledge presents stories and songs from indigenous peoples and explores their understanding of tortoises. As the only comprehensive book on the desert tortoise, this volume gathers a vast amount of information for scientists, veterinarians, and resource managers while also remaining useful to general readers who keep desert tortoises as backyard pets. It will stand as an enduring reference on this endearing creature for years to come.
Tropical Biology And Conservation Management Volume Ix
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Author : Kleber Del Claro
language : en
Publisher: EOLSS Publications
Release Date : 2009-05-11
Tropical Biology And Conservation Management Volume Ix written by Kleber Del Claro and has been published by EOLSS Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-05-11 with categories.
This Encyclopedia of Tropical Biology and Conservation Management is a component of the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. Tropical environments cover the most part of still preserved natural areas of the Earth. The greatest biodiversity, as in terms of animals and plants, as microorganisms, is placed in these hot and rainy ecosystems spread up and below the Equator line. Additionally, the most part of food products, with vegetal or animal origin, that sustain nowadays human beings is direct or undirected dependent of tropical productivity. Biodiversity should be looked at and evaluated not only in terms of numbers of species, but also in terms of the diversity of interactions among distinct organisms that it maintains. In this sense, the complexity of web structure in tropical systems is a promise of future to nature preservation on Earth. In the chemicals of tropical plant and animals, could be the cure to infinite number of diseases, new food sources, and who knows what more. Despite these facts tropical areas have been exploited in an irresponsible way for more than 500 years due the lack of an ecological conscience of men. Exactly in the same way we did with temperate areas and also tropical areas in the north of Equator line. Nowadays, is estimated that due human exploitation, nation conflicts and social problems, less than 8% of tropical nature inside continental areas is still now untouchable. The extension of damage in the tropical areas of oceans is unknown. Thus so, all knowledge we could accumulate about tropical systems will help us, as in the preservations of these important and threatened ecosystems as in a future recuperation, when it was possible. Only knowing the past and developing culture, mainly that directed to peace, to a better relationship among nations and responsible use and preservation of natural resources, human beings will have a long future on Earth. These volumes, Tropical Biology and Natural Resources was divided in sessions to provide the reader the better comprehension possible of issue and also to enable future complementation and improvements in the encyclopedia. Like we work with life, we intended to transform this encyclopedia also in a “life” volume, in what new information could be added in any time. As president of the encyclopedia and main editor I opened the theme with an article titled: “Tropical Biology and Natural resources: Historical Pathways and Perspectives”, providing the reader an initial view of the origins of human knowledge about the tropical life, and what we hope to the future. In the sequence we have more than 100 chapters distributed in tem sessions: Tropical Ecology (TE); Tropical Botany (TB); Tropical Zoology (TZ); Savannah Ecosystems (SE); Desert Ecosystems (DE); Tropical Agriculture (TA); Natural History of Tropical Plants (NH); Human Impact on Tropical Ecosystems (HI); Tropical Phytopathology and Entomology (TPE); Case Studies (CS). This 11-volume set contains several chapters, each of size 5000-30000 words, with perspectives, applications and extensive illustrations. It is the only publication of its kind carrying state-of-the-art knowledge in the fields of Tropical Biology and Conservation Management and is aimed, by virtue of the several applications, at the following five major target audiences: University and College Students, Educators, Professional Practitioners, Research Personnel and Policy Analysts, Managers, and Decision Makers and NGOs.
Great Warm Deserts Of The World
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Author : Andrew Goudie
language : en
Publisher:
Release Date : 2002
Great Warm Deserts Of The World written by Andrew Goudie and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Nature categories.
A survey of the nature and history of the landscapes of the world's great warm deserts, that illustrates how their distinctive features have developed in response to major climatic and tectonic changes over millions of years. The treatment is a regional one, and each of the world's major warm deserts has its own chapter. Written by a leading expert in the field.
Desert Biology
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Author : G. W. Brown
language : en
Publisher: Elsevier
Release Date : 2013-10-02
Desert Biology written by G. W. Brown and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-02 with Science categories.
Desert Biology: Special Topics on the Physical and Biological Aspects on Arid Regions, Volume I covers the biology, geophysical characteristics, and ways of life in arid regions. This book is composed of 11 chapters, and begins with a brief description of a desert community, the Merkhiyat Jebels, with its diverse fauna and flora. The subsequent chapters look into the climate, geographical distribution, geologic and geomorphic aspects, and the evolution of desert community. These topics are followed by intensive discussions on desert plants, animals, and limnology. The last chapter describes the adaptive processes and human adaptation capacity to arid environments. This book will prove useful to upper division and graduate students in desert biology.
Desert Geomorphology
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Author : Ronald U. Cooke
language : en
Publisher: CRC Press
Release Date : 1993-01-14
Desert Geomorphology written by Ronald U. Cooke and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993-01-14 with Science categories.
Including recent research findings from terrestrial satellite imagery, the study of planetary landscapes, and advances in laboratory work, this also covers the environmental processes involved in desertification and the solution of planning and
The Great American Biotic Interchange
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Author : Francis G. Stehli
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
The Great American Biotic Interchange written by Francis G. Stehli and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Science categories.
Two rather different elements combine to explain the origin of this volume: one scientific and one personal. The broader of the two is the scientific basis-the time for such a volume had arrived. Geology had made remarkable progress toward an understanding of the phys ical history of the Caribbean Basin for the last 100 million years or so. On the biological side, many new discoveries had elucidated the distributional history of terrestrial orga nisms in and between the two Americas. Geological and biological data had been combined to yield the timing of important events with unprecedented resolution. Clearly, when each of two broad disciplines is making notable advances and when each provides new insights for the other, the rewards of cross-disciplinary contacts increase exponentially. The present volume represents an attempt to bring together a group of geologists, paleontologists and biologists capable of exploiting this opportunity through presentation of an interdisciplinary synthesis of evidence and hypothesis concerning interamerican connections during the Cretaceous and Cenozoic. Advances in plate tectonics form the basis for a modern synthesis and, in the broadest terms, dictate the framework within which the past and present distributions of organisms must be interpreted. Any scientific dis cipline must seek tests of its conclusions from data outside of its own confines.
The Physics Of Blown Sand And Desert Dunes
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Author : R. A. Bagnold
language : en
Publisher: Courier Corporation
Release Date : 2005-01-26
The Physics Of Blown Sand And Desert Dunes written by R. A. Bagnold and has been published by Courier Corporation this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-01-26 with Science categories.
An expert treatise on the origin and evolution of dunes, this classic work was used by NASA in studying sand dunes on Mars and is appropriate for undergraduate and graduate students. The first book to deal exclusively with the behavior of blown sand and related land forms, its accessible style makes it an enduring reference more than half a century after its initial publication. The author studied the sands of North Africa for many years before World War II and is recognized as a leading authority on the subject. His three-part treatment begins with his wind-tunnel experiments, which he conducted to investigate the mechanism of sand transport. First, an account of the observed movement of the individual grains, followed by a chapter on the ground wind and its dependence on the type of surface over which it blows, form a comprehensive view of the interaction between wind and sand. Part Two considers small-scale surface phenomena, such as ripples and ridges, and the closely related subject of size-grading the grains. The third part uses the foregoing results to explain the growth and movement of dunes in general, and the peculiar characteristics of the two main dune types. A method of determining the internal structure of accumulated sand illuminates both the sand's carrying power for motor transport and its water-retention potential. A final chapter, derived from firsthand knowledge, examines the intriguing subject of "singing sand."