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Author: R. Toby Pennington Publisher: CRC Press ISBN: 1420004492 Category : Science Languages : en Pages : 509
Book Description
More often than not, when people think of a neotropical forest, what comes to mind is a rain forest, rather than a dry forest. Just as typically, when they imagine a savanna, they visualize the African plains, rather than those dry woodlands and grasslands found in the Neotropics. These same preconceptions can be found among scientists, as these ne
Author: R. Toby Pennington Publisher: CRC Press ISBN: 1420004492 Category : Science Languages : en Pages : 509
Book Description
More often than not, when people think of a neotropical forest, what comes to mind is a rain forest, rather than a dry forest. Just as typically, when they imagine a savanna, they visualize the African plains, rather than those dry woodlands and grasslands found in the Neotropics. These same preconceptions can be found among scientists, as these ne
Author: Publisher: ISBN: Category : Agriculture Languages : es Pages : 556
Book Description
Indexes material received in the Orton Memorial Library of the Inter-American Institute of Agricultural Sciences, Center for Training and Research, 1966-69; in the Library and Documentation Service of the Inter-American Institute of Agricultural Sciences, Teaching and Research Center, Jan.-Sept. 1970; and in the Library of the Inter-American Center for Agricultural Documentation and Information, Oct. 1970-1973.
Author: José Luis Prado Publisher: Springer ISBN: 3319558773 Category : Science Languages : en Pages : 157
Book Description
This book provides an update on the phylogeny, systematics and ecology of horses in South America based on data provided over the past three decades. The contemporary South American mammalian communities were shaped by the emergence of the Isthmus of Panama and by the profound climatic oscillations during the Pleistocene. Horses were a conspicuous group of immigrant mammals from North America that arrived in South America during the Pleistocene. This group is represented by 2 genera, Hippidion and Equus, which include small species (Hippidion devillei, H. saldiasi, E. andium and E. insulatus) and large forms (Equus neogeus and H. principale). Both groups arrived in South America via 2 different routes. One model designed to explain this migration indicates that the small forms used the Andes corridor, while larger horses used the eastern route and arrived through some coastal areas. Molecular dating (ancient DNA) suggests that the South American horses separated from the North American taxa (caballines and the New World stilt-legged horse) after 3.6 - 3.2 Ma, consistent with the final formation of the Panamanian Isthmus. Recent studies of stable isotopes in these horses indicate an extensive range of 13C values cover closed woodlands to C4 grasslands. This plasticity agrees with the hypothesis that generalist species and open biome specialist species from North America indicate a positive migration through South America.
Author: David Sowell Publisher: Temple University Press ISBN: 9780877229650 Category : Art Languages : en Pages : 300
Book Description
David Sowell traces the history of artisan labor organizations in Bogotá and examines long-term political activity of Colombian artisans in the century after independence. Relying on contemporary newspapers, political handouts, broadsides, and public petitions, Sowell analyzes the economic, social, and political history of the capital's artisan class, a middling social sector with very significant social and political strengths. This is the first study in English of nineteenth-century Latin American artisans and one of the few treatments that spans the whole of nineteenth-century Colombian history.The rise and late decline of artisan class political activity coincided the Colombia's integration into the world market. Initially petitioning for tariff protection, Bogotá's craftsmen in time mobilized to address numerous issues, including industrial education, internal trade order, credit, and better health and educational facilities. Sowell traces the transformation of Colombia's economy and the (mainly negative) effects its evolution had on bogotano artisans. By the end of the nineteenth century, the artisans class was fragmented, their labor leadership replaced by workers associated with industrial production, transportation systems, and the production of coffee. Author note: David Sowell is Assistant Professor of History at Juniata College.
Author: Juan J. Alava Publisher: CRC Press ISBN: 1351647636 Category : Nature Languages : en Pages : 285
Book Description
Pinnipeds are a fascinating group of marine mammals that play a crucial role as apex predators and sentinels of the functioning and health of marine ecosystems. They are found in the most extreme environments from the Polar regions to the tropics. Pinnipeds are comprised of about 34 species, and of those at least 25% live permanently in tropical zones. This book reviews and updates current research on the biology, marine ecology, bio-monitoring, and conservation of tropical pinniped populations, including their behavior, anthropogenic stressors, and health. It also looks at challenges to be faced for the conservation of tropical pinnipeds, many of which are threatened species.
Author: Francisco J. Prevosti Publisher: Springer ISBN: 3319037013 Category : Science Languages : en Pages : 206
Book Description
This book summarizes the evolution of carnivorous mammals in the Cenozoic of South America. It presents paleontological information on the two main mammalian carnivorous groups in South America; Metatheria and Eutheria. The topics include the origin, systematics, phylogeny, paleoecology and evolution of the Sparassodonta and Carnivora. The book is based on a wide variety of published sources from the last few decades.
Author: R. Toby Pennington
Author: R. Toby Pennington
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Author: Otto Huber
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Author: S. Endrödi
Author: José Luis Prado
Author: David Sowell
Author: Juan J. Alava
Author: Francisco J. Prevosti