Download or read book Necesidades y perspectivas de uso de la radiaci n sincotr n en Espa a written by A. Muñoz Páez and published by . This book was released on 1993 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Necesidades y Perspectivas de Uso de la Radiaci n Sin Crotron en Espa a written by A. Muñoz Paez and published by . This book was released on 1993 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Common Trees of Puerto Rico and the Virgin Islands written by Elbert Luther Little and published by . This book was released on 1964 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Banana Genomics and Transgenic Approaches for Genetic Improvement written by Sukhada Mohandas and published by Springer. This book was released on 2016-09-08 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bananas and plantains are among the most important food and cash crops in the world. They are cultivated in more than 135 countries, across the tropics and subtropics, with an annual global production of ca. 130 million metric tonnes. Though bananas are one of the most important components of food security in many developing countries, banana production is threatened by both abiotic and biotic stresses. These include a wide range of diseases and pests, such as bunchy top virus, burrowing nematodes, black Sigatoka or black leaf streak, Fusarium wilt, etc. In recent years, considerable progress has been made and several biotechnological and genomic tools have been employed to help understand and unravel the mysterious banana genome. Molecular and genomic studies have helped to decipher the Musa genome and its evolution. Genetic linkage map and whole genome sequencing of both Musa acuminata and Musa balbisiana (progenitors of cultivated banana) have completely changed the way of thinking and the approach on banana crop improvement. Whole-genome sequencing has helped to improve the selection of quantitative traits such as yield, as well as the selection of optimal parents for developing required hybrids in breeding programs. Gene isolation and the analysis of mutants have helped in the characterization of genes of agronomic value and the associated regulatory sequences. With the advent of molecular markers and new statistical tools, it is now possible to measure the diversity, identify genes and useful alleles linked to important agronomic traits. Further these alleles can be incorporated into cultivars through marker assisted selection or through transgenic approach. Transgenic approaches are potential tools for direct transfer of these genes into popular cultivars, which are generally not amenable for conventional breeding techniques, in specific with crops such as bananas which are sterile, triploid and heterozygous thereby making it difficult to reconstruct the recurrent genotypes in banana. Transgenic techniques thus have helped overcome the difficulty of working with sterile, triploid banana crop. In the last five years, enormous amount of new information and techniques have been generated for banana. A comprehensive book entitled “Banana: Genomics and Transgenic Approaches for Genetic improvement” on banana genomics, latest transgenic technologies and tools available for improved crop development in banana will address all these requirements.
Download or read book Monteverde written by Nalini M. Nadkarni and published by Oxford University Press. This book was released on 2000-03-09 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Monteverde Cloud Forest Reserve has captured the worldwide attention of biologists, conservationists, and ecologists and has been the setting for extensive investigation over the past 30 years. Roughly 40,000 ecotourists visit the Cloud Forest each year, and it is often considered the archetypal high-altitude rain forest.This volume brings together some of the most prominent researchers of the region to provide a broad introduction to the biology of the Monteverde, and cloud forests in general. Collecting and synthesizing vital information about the ecosystem and its biota, the book also examines the positive and negative effects of human activity on both the forest and the surrounding communities. Ecologists, tropical biologists, and natural historians will find this volume an indispensable resource, as will all those who are fascinated by the magnificent wonders of the tropical forests.
Download or read book Ethnobiology written by E. N. Anderson and published by John Wiley & Sons. This book was released on 2012-02-14 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: The single comprehensive treatment of the field, from the leading members of the Society of Ethnobiology The field of ethnobiology—the study of relationships between particular ethnic groups and their native plants and animals—has grown very rapidly in recent years, spawning numerous subfields. Ethnobiological research has produced a wide range of medicines, natural products, and new crops, as well as striking insights into human cognition, language, and environmental management behavior from prehistory to the present. This is the single authoritative source on ethnobiology, covering all aspects of the field as it is currently defined. Featuring contributions from experienced scholars and sanctioned by the Society of Ethnobiology, this concise, readable volume provides extensive coverage of ethical issues and practices as well as archaeological, ethnological, and linguistic approaches. Emphasizing basic principles and methodology, this unique textbook offers a balanced treatment of all the major subfields within ethnobiology, allowing students to begin guided research in any related area—from archaeoethnozoology to ethnomycology to agroecology. Each chapter includes a basic introduction to each topic, is written by a leading specialist in the specific area addressed, and comes with a full bibliography citing major works in the area. All chapters cover recent research, and many are new in approach; most chapters present unpublished or very recently published new research. Featured are clear, distinctive treatments of areas such as ethnozoology, linguistic ethnobiology, traditional education, ethnoecology, and indigenous perspectives. Methodology and ethical action are also covered up to current practice. Ethnobiology is a specialized textbook for advanced undergraduates and graduate students; it is suitable for advanced-level ethnobotany, ethnobiology, cultural and political ecology, and archaeologically related courses. Research institutes will also find this work valuable, as will any reader with an interest in ethnobiological fields.
Download or read book Pantheon of Dermatology written by Christoph Löser and published by Springer. This book was released on 2013-02-23 with total page 1280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pantheon of Dermatology provides an exciting introduction to the history of dermatology through the life stories of its most important protagonists. From the reviews: “The Pantheon is more than a history and more than a collection of biographies — it is a monument on the history of dermatology.” (Jeff Bernhard, JAAD, December 2013) “This tome is magnificent to view, and it will provide much education and reflection for even the most erudite readers.” (Jane M. Grant-Kels, Clin. Dermatol., November-December, 2013) “This truly magisterial ... voyage in words and pictures through dermatology ... is a terrific and exciting adventure.” (Robert Rudolph, UC Davis DermChat, May 2013)
Download or read book Landscape Ethnoecology written by Leslie Main Johnson and published by Berghahn Books. This book was released on 2012 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although anthropologists and cultural geographers have explored "place" in various senses, little cross-cultural examination of "kinds of place," or ecotopes, has been presented from an ethno-ecological perspective. In this volume, indigenous and local understandings of landscape are investigated in order to better understand how human communities relate to their terrestrial and aquatic resources. The contributors go beyond the traditional ecological knowledge (TEK) literature and offer valuable insights on ecology and on land and resources management, emphasizing the perception of landscape above the level of species and their folk classification. Focusing on the ways traditional people perceive and manage land and biotic resources within diverse regional and cultural settings, the contributors address theoretical issues and present case studies from North America, Mexico, Amazonia, tropical Asia, Africa and Europe.
Download or read book Crop Improvement written by Khalid Rehman Hakeem and published by Springer Science & Business Media. This book was released on 2013-06-13 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The improvement of crop species has been a basic pursuit since cultivation began thousands of years ago. To feed an ever increasing world population will require a great increase in food production. Wheat, corn, rice, potato and few others are expected to lead as the most important crops in the world. Enormous efforts are made all over the world to document as well as use these resources. Everybody knows that the introgression of genes in wheat provided the foundation for the “Green Revolution”. Later also demonstrated the great impact that genetic resources have on production. Several factors are contributing to high plant performance under different environmental conditions, therefore an effective and complementary use of all available technological tools and resources is needed to meet the challenge.
Download or read book La Selva written by Lucinda A. McDade and published by University of Chicago Press. This book was released on 1994-03-18 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abiotic environment and ecosystem processes; The plant community: Composition, dynamics, and life-history processes; The animal community; Plant-animal interactions; La selva's human environment.
Download or read book Cloud Forests in the Humid Tropics written by Thomas Stadtmüller and published by Bib. Orton IICA / CATIE. This book was released on 1987 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environment Subsistence and System written by R. F. Ellen and published by Cambridge University Press. This book was released on 1982-09-30 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Human ecology is ultimately part of a general theory of society. This is the argument developed here by Roy Ellen, whose exploration of the interplay between social organization and ecology in small-scale subsistence systems has direct bearings both on the investigation of human environmental relations in general and on contemporary social theory. He argues that while ecological study of non-industrial societies cannot be elevated to the status of theory, domain or discipline, it can be represented as a single 'problematic' that historically has acquired some degree of autonomy and which continues to make a significant contribution to a wider anthropology. Dr Ellen introduces his subject matter through an extended and systematic discussion of some major frameworks developed within the last hundred years to examine and explain facets of the relationship between culture, social organization and the environment: determinism, possibilism, cultural ecology, systems theory and ideas derived from modern biology. He follows this with a detailed review and appraisal of important recent research involving the use of ecological models, methods and data. This original and innovative study of the pre-eminently social character of human ecological relations will be of considerable interest to all students and researchers concerned with understanding the nature of the relationship between human beings and their environments.
Download or read book Nutrient Cycling in Forest Ecosystems written by Robert G. Qualls and published by . This book was released on 2020 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: The long-term productivity of forest ecosystems depends on the cycling of nutrients. The effect of carbon dioxide fertilization on forest productivity may ultimately be limited by the rate of nutrient cycling. Contemporary and future disturbances such as climatic warming, N-deposition, deforestation, short rotation sylviculture, fire (both wild and controlled), and the invasion of exotic species all place strains on the integrity of ecosystem nutrient cycling. Global differences in climate, soils, and species make it difficult to extrapolate even a single important study worldwide. Despite advances in the understanding of nutrient cycling and carbon production in forests, many questions remain. The chapters in this volume reflect many contemporary research priorities. The thirteen studies in this volume are arranged in the following subject groups: • N and P resorption from foliage worldwide, along chronosequences and along elevation gradients; • Litter production and decomposition; • N and P stoichiometry as affected by N deposition, geographic gradients, species changes, and ecosystem restoration; • Effects of N and P addition on understory biomass, litter, and soil; • Effects of burning on soil nutrients; • Effects of N addition on soil fauna.
Download or read book Carving Nature at Its Joints written by Joseph Keim Campbell and published by MIT Press. This book was released on 2011-10-28 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflections on the metaphysics and epistemology of classification from a distinguished group of philosophers. Contemporary discussions of the success of science often invoke an ancient metaphor from Plato's Phaedrus: successful theories should "carve nature at its joints." But is nature really "jointed"? Are there natural kinds of things around which our theories cut? The essays in this volume offer reflections by a distinguished group of philosophers on a series of intertwined issues in the metaphysics and epistemology of classification. The contributors consider such topics as the relevance of natural kinds in inductive inference; the role of natural kinds in natural laws; the nature of fundamental properties; the naturalness of boundaries; the metaphysics and epistemology of biological kinds; and the relevance of biological kinds to certain questions in ethics. Carving Nature at Its Joints offers both breadth and thematic unity, providing a sampling of state-of-the-art work in contemporary analytic philosophy that will be of interest to a wide audience of scholars and students concerned with classification.
Download or read book Aztec Medicine Health and Nutrition written by Bernard Ortiz de Montellano and published by . This book was released on 1990 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Why were a handful of Spaniards able to overthrow the Aztec Empire? The dramatic destruction of the Aztecs has prompted historians, anthropologists, demographers, and epidemiologists to look closely at the health and nutrition of the Valley of Mexico. If the Aztecs were overcrowded, living at the edge of starvation, and incapable of treating disease effectivefly, then their decimation by the Europeans becomes much easier to undestand. Bernard Ortiz de Montellano argues that such hypotheses do not hold up. Rather, at the time of the Conquest, the Aztecs were a thriving, well-nourished, healthy people. The swift, brutal success of the conquistadors cannot be explained by the prior ill-health or medical incompetence of their victims. To support his case, Ortiz de Montellano uses an astonishing array of evidence gained from many disciplines. Ortiz de Montellano presents the most comprehensivve and detailed explanation of Aztec medical beliefs available in English. -- From publisher's description.
Download or read book Historical Ethnobiology written by Maria Franco Trindade Medeiros and published by Academic Press. This book was released on 2020-11-20 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Historical Ethnobiology presents a unique approach to analyzing human-nature interactions, using theoretical and methodological aspects to examine historical scientific knowledge. This book disseminates the notion that past local narratives of biodiversity influence the determination of both historical and modern scientific decisions. Beginning with a brief history of ethnobiology’s development, this book delves into conceptual models, historical knowledge areas, and the theoretical matrix of ethnobiology. This book also focuses on the importance of memory including topics of memory production by human in different epochs and how individual memory records contribute to social history and the understanding of the past effects of human interaction with nature. Looking ahead, it discusses the importance of records such as these for determining future mankind’s relationships with nature to preserve biodiversity and ensure conservation. Historical Ethnobiology is the first book to focus on past human-nature interactions and their interpretations in today’s scientific culture. This book is an excellent resource for students and researchers in biology, ethnobiology, and anthropology. Presents an inclusive interpretation and use of historical botanical, zoological and geographical registers kept in institutions to reconnect the past with modern issues Illuminates documental analysis of past interactions between humans and nature Provides a comprehensive and accessible reference point to provide insights into a rapidly growing field
