Download or read book Swollen thorn acacias of Central America written by Daniel H. Janzen and published by . This book was released on 1973 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Latin American Insects and Entomology written by Charles Leonard Hogue and published by Univ of California Press. This book was released on 1993-01-01 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: 00 This is the first comprehensive guide to insect life in a part of the world known for its abundant, and endangered, life forms. Charles Hogue's scholarship embraces vast geographical territory--Mexico, Central and South America, and the Caribbean. Color photographs and first-rate drawings illustrate the clearly written text. This is the first comprehensive guide to insect life in a part of the world known for its abundant, and endangered, life forms. Charles Hogue's scholarship embraces vast geographical territory--Mexico, Central and South America, and the Caribbean. Color photographs and first-rate drawings illustrate the clearly written text.
Download or read book Invasion of Woody Legumes written by O.W. Van Auken and published by Springer Science & Business Media. This book was released on 2013-05-22 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes our current knowledge of the invasion or encroachment and cause of population growth and spread of some dry land, arid zone woody legumes. Community structure, population growth, and competition of these woody legumes will also be examined. These species and ecosystems are both extensive and dynamic. They occur worldwide, but mainly in the arid zones of the tropics and sub-tropics. The cause of the growth and spread of these species and communities has long been claimed to be caused by distal factors rather than proximal ones. However, these species appear to be influenced and perhaps controlled by anthropogenic factors, specifically grazing and fire or lack of fire. Their overall worldwide distribution has probably changed little in the recent past, but their populations have expanded into grasslands and their density has increased in many places. Some associated communities have shown dramatic changes in response to recent large-scale droughts and the loss of most of the dominant overstory species. However, changes in the woody legume communities and their species are generally unknown.
Download or read book The Coevolutionary Process written by John N. Thompson and published by University of Chicago Press. This book was released on 2009-04-24 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional ecological approaches to species evolution have frequently studied too few species, relatively small areas, and relatively short time spans. In The Coevolutionary Process, John N. Thompson advances a new conceptual approach to the evolution of species interactions—the geographic mosaic theory of coevolution. Thompson demonstrates how an integrated study of life histories, genetics, and the geographic structure of populations yields a broader understanding of coevolution, or the development of reciprocal adaptations and specializations in interdependent species. Using examples of species interactions from an enormous range of taxa, Thompson examines how and when extreme specialization evolves in interdependent species and how geographic differences in specialization, adaptation, and the outcomes of interactions shape coevolution. Through the geographic mosaic theory, Thompson bridges the gap between the study of specialization and coevolution in local communities and the study of broader patterns seen in comparisons of the phylogenies of interacting species.
Download or read book The Essential Naturalist written by Michael H. Graham and published by University of Chicago Press. This book was released on 2011-05-15 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Like nearly every area of scholarly inquiry today, the biological sciences are broken into increasingly narrow fields and subfields, its practitioners divided into ecologists, evolutionary biologists, taxonomists, paleontologists, and much more. But all these splintered pieces have their origins in the larger field of natural history—and in this era where climate change and relentless population growth are irrevocably altering the world around us, perhaps it’s time to step back and take a new, fresh look at the larger picture. The Essential Naturalist offers exactly that: a wide-ranging, eclectic collection of writings from more than eight centuries of observations of the natural world, from Leeuwenhoek to E. O. Wilson, from von Humboldt to Rachel Carson. Featuring commentaries by practicing scientists that offer personal accounts of the importance of the long tradition of natural history writing to their current research, the volume serves simultaneously as an overview of the field’s long history and as an inspirational starting point for new explorations, for trained scientists and amateur enthusiasts alike.
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1975 with total page 2834 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ant Plant Interactions written by Paulo S. Oliveira and published by Cambridge University Press. This book was released on 2017-08-17 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ants are probably the most dominant insect family on earth, and flowering plants have been the dominant plant group on land for more than 100 million years. In recent decades, human activities have degraded natural environments with unparalleled speed and scale, making it increasingly apparent that interspecific interactions vary not only under different ecological conditions and across habitats, but also according to anthropogenic global change. This is the first volume entirely devoted to the anthropogenic effects on the interactions between these two major components of terrestrial ecosystems. A first-rate team of contributors report their research from a variety of temperate and tropical ecosystems worldwide, including South, Central and North America, Africa, Japan, Polynesia, Indonesia and Australia. It provides an in-depth summary of the current understanding for researchers already acquainted with insect-plant interactions, yet is written at a level to offer a window into the ecology of ant-plant interactions for the mostly uninitiated international scientific community.
Download or read book Monthly Catalog of United States Government Publications Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1976 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1971 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Nitrogen Fixation written by Frans J. de Bruijn and published by John Wiley & Sons. This book was released on 2015-06-12 with total page 2250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is arguably the most important nutrient required by plants. However, the availability of nitrogen is limited in many soils and although the earth's atmosphere consists of 78.1% nitrogen gas (N2) plants are unable to use this form of nitrogen. To compensate , modern agriculture has been highly reliant on industrial nitrogen fertilizers to achieve maximum crop productivity. However, a great deal of fossil fuel is required for the production and delivery of nitrogen fertilizer. Moreover carbon dioxide (CO2) which is released during fossil fuel combustion contributes to the greenhouse effect and run off of nitrate leads to eutrophication of the waterways. Biological nitrogen fixation is an alternative to nitrogen fertilizer. It is carried out by prokaryotes using an enzyme complex called nitrogenase and results in atmospheric N2 being reduced into a form of nitrogen diazotrophic organisms and plants are able to use (ammonia). It is this process and its major players which will be discussed in this book. Biological Nitrogen Fixation is a comprehensive two volume work bringing together both review and original research articles on key topics in nitrogen fixation. Chapters across both volumes emphasize molecular techniques and advanced biochemical analysis approaches applicable to various aspects of biological nitrogen fixation. Volume 1 explores the chemistry and biochemistry of nitrogenases, nif gene regulation, the taxonomy, evolution, and genomics of nitrogen fixing organisms, as well as their physiology and metabolism. Volume 2 covers the symbiotic interaction of nitrogen fixing organisms with their host plants, including nodulation and symbiotic nitrogen fixation, plant and microbial "omics", cyanobacteria, diazotrophs and non-legumes, field studies and inoculum preparation, as well as nitrogen fixation and cereals. Covering the full breadth of current nitrogen fixation research and expanding it towards future advances in the field, Biological Nitrogen Fixation will be a one-stop reference for microbial ecologists and environmental microbiologists as well as plant and agricultural researchers working on crop sustainability.
Download or read book The Lives of Ants written by Laurent Keller and published by OUP Oxford. This book was released on 2009-02-26 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humans have long been fascinated by ants. While not necessarily brightly coloured or beautiful, ants display some remarkable characteristics that are almost unique in the animal world. They live in intricately organized societies, made up of individuals that cooperate, communicate, and divide up daily tasks. They display amazing ingenuity when it comes to building nests and other structures, finding supplies, or even exploiting other members of the animal kingdom. They are capable too of aggression and violence, of disturbing the apparent peace of their colonies and of sudden fratricidal or matricidal strife. In short, the lives of ants are among the most fascinating in the natural world. This is an account of those lives - looking at the many species of ants around the world, explaining the secret of their huge ecological success, examining the remarkable and varied behaviours that ants exhibit, and tying in molecular biology, genetics, and even cutting-edge developments in robotics, to shed light on what makes ants unique.
Download or read book The Forest of the Lacandon Maya written by Suzanne Cook and published by Springer. This book was released on 2016-03-15 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Forest of the Lacandon Maya: An Ethnobotanical Guide, with active links to audio-video recordings, serves as a comprehensive guide to the botanical heritage of the northern Lacandones. Numbering fewer than 300 men, women, and children, this community is the most culturally conservative of the Mayan groups. Protected by their hostile environment, over many centuries they maintain autonomy from the outside forces of church and state, while they continue to draw on the forest for spiritual inspiration and sustenance. In The Forest of the Lacandon Maya: An Ethnobotanical Guide, linguist Suzanne Cook presents a bilingual Lacandon-English ethnobotanical guide to more than 450 plants in a tripartite organization: a botanical inventory in which main entries are headed by Lacandon names followed by common English and botanical names, and which includes plant descriptions and uses; an ethnographic inventory, which expands the descriptions given in the botanical inventory, providing the socio-historical, dietary, mythological, and spiritual significance of most plants; and chapters that discuss the relevant cultural applications of the plants in more detail provide a description of the area’s geography, and give an ethnographic overview of the Lacandones. Active links throughout the text to original audio-video recordings demonstrate the use and preparation of the most significant plants.
Download or read book Ancient Maya Wetland Agriculture written by Mary Deland Pohl and published by Routledge. This book was released on 2019-08-27 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Changes in the orientation of archaeological research in the post-World War n period affected Maya studies. The cultural ecological perspective, which was rising to prominence, put an old debate in bold relief: How had this prehistoric civilization adapted to the tropical forest environment? How could swidden cultivation have sustained the unexpectedly high population densities that settlement pattern studies appeared to be revealing? Had the ancient Maya practiced some from of intensive agriculture? Archaeologist Dennis E. Puleston went to the Maya Lowlands to investigate geographer Alfred H. Siemens's reports of possible intensive agriculture ("ridged fields") seen from the air and to study prehistoric Maya cultivation and civilization from a cultural ecological perspective. This volume presents the results of the Rio Hondo Project field research on Albion Island in northern Belize from 1973 to 1980 with the addition of selected results from Pohl's continuing work in northern Belize.
Download or read book Evolution written by and published by PediaPress. This book was released on with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Biology of Tropical Insects written by Allen M. Young and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book I have tried to bring together the major developments in the study of insect populations in tropical environments. In some ways, this task has been a difficult one because conceptually it is virtually impossible to limit a discussion of insect ecology to the tropics, since the same concepts, theories, and hypoth eses concerning the mechanisms by which habitats support insect populations often apply both to temperate and to tropical regions. Thus one might argue effectively that a book such as Peter Price's Insect Ecology represents a more comprehensive treatment of insect ecology, including the tropical aspects. Yet because there has been a tremendous amount of new study on insects in the tropics in recent years, and because there has also been a strong historical interest in tropical insects, judging from early museum expeditions and medically and agriculturally oriented studies of insects in the New and Old World tropics, I believe there is a place for a book dealing almost exclusively with tropical insects. But logically so, such a book by necessity incorporates data and informa tion from Temperate Zone studies, if for no other reason than because insights into the properties of tropical environments often emerge from compariso'ns of species, communities, or faunas between temperate and tropical regions. An understanding of insect populations in the tropics cannot be divorced from a consideration of Temperate Zone populations.
Download or read book Insect Ecology written by Peter W. Price and published by Cambridge University Press. This book was released on 2011-08-18 with total page 829 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combining breadth of coverage with detail, this logical and cohesive introduction to insect ecology couples concepts with a broad range of examples and practical applications. It explores cutting-edge topics in the field, drawing on and highlighting the links between theory and the latest empirical studies. The sections are structured around a series of key topics, including behavioral ecology; species interactions; population ecology; food webs, communities and ecosystems; and broad patterns in nature. Chapters progress logically from the small scale to the large; from individual species through to species interactions, populations and communities. Application sections at the end of each chapter outline the practicality of ecological concepts and show how ecological information and concepts can be useful in agriculture, horticulture and forestry. Each chapter ends with a summary, providing a brief recap, followed by a set of questions and discussion topics designed to encourage independent and creative thinking.
Download or read book The Chemistry of Plants and Insects written by Margareta Séquin and published by Royal Society of Chemistry. This book was released on 2017-04-28 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explains the natural chemical compounds that determine the fascinating interactions between plants and insects providing a gentle and absorbing introduction to organic chemistry.
