Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Taxonomic Studies On The Megachilidea Of North Western India Insecta Hymenoptera Apoidea
Download Taxonomic Studies On The Megachilidea Of North Western India Insecta Hymenoptera Apoidea full books in PDF, epub, and Kindle. Read online Taxonomic Studies On The Megachilidea Of North Western India Insecta Hymenoptera Apoidea ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Taxonomic studies on the Megachilidea of north-western India (Insecta, Hymenoptera, Apoidea) by : Rajiv K. Gupta
Download or read book Taxonomic studies on the Megachilidea of north-western India (Insecta, Hymenoptera, Apoidea) written by Rajiv K. Gupta and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Taxonomic Studies on the Megachilidae of North-western India by : Rajiv K. Gupta
Download or read book Taxonomic Studies on the Megachilidae of North-western India written by Rajiv K. Gupta and published by . This book was released on 1993 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Evolutionary Basis for Pollination Ecology by : S. C. Willemstein
Download or read book An Evolutionary Basis for Pollination Ecology written by S. C. Willemstein and published by Brill Archive. This book was released on 1987 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fig., tab
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9789251036594 Total Pages :216 pages Book Rating :4.0/5 (365 download)
Book Synopsis Pollination of Cultivated Plants in the Tropics by : Food and Agriculture Organization of the United Nations
Download or read book Pollination of Cultivated Plants in the Tropics written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 1995 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: This bulletin, based on contributions from various contributors and edited by Dr. D.W. Roubik, introduces the reader to various aspects of natural and insect pollination. It discusses the pollinators themselves, and the ecological and economic importance of pollination, as well as applied pollination in temperate, tropical oceanic islands and mainland tropics, and alternatives to artificial pollinator populations. Prospects for the future are also discussed. Chapter 2 deals with successful pollination with pollinator populations, the evaluation of pollinators and floral biology and research techniques. The behaviour of pollinators and plant phenology and various case studies on the preparation of pollinators for use in tropical agriculture are also discussed. A glossary and various appendices regarding cultivated and semi-cultivated plants in the tropics, pollination contracts and levels of safety of pesticides for bees and other pollinators are included.
Book Synopsis Hymenoptera and Biodiversity by : John LaSalle
Download or read book Hymenoptera and Biodiversity written by John LaSalle and published by Oxford University Press, USA. This book was released on 1993 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing attention has been focused on biodiversity in recent years, based on a number of arguments to justify the conservation of the world's flora and fauna. Such arguments may be economic - that species may have potential for food or medicine - or ecological - that the extinction of any species affects the overall ecological balance. Little attention, however, has been focused on which groups have the greatest impact on maintaining diversity. Hymenoptera is one of these groups. It not only forms a major component of diversity itself, but is vital in sustaining diversity in other groups. Hymenoptera species (bees, wasps, ants and sawflies) are major plant pollinators, seed dispersers and parasitoids and predators of other arthropods (and hence important in biological control). This volume therefore tackles an important subject and concentrates on three key issues: how species of Hymenoptera affect diversity in other organisms; whether Hymenoptera is a group prone to extinction; and the consequences if Hymenoptera species are differentially removed from terrestrial ecosystems. The book is essential reading for entomologists and those concerned with biodiversity and conservation.
Book Synopsis Principles of Pollination Ecology by : K. Faegri
Download or read book Principles of Pollination Ecology written by K. Faegri and published by Elsevier. This book was released on 2013-10-22 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: A completely revised and rewritten edition of this comprehensive survey of the botanical problems of pollination ecology approached from both a theoretical and a practical viewpoint. Examples are drawn from all geographical areas where pollination has been studied and general principles are illustrated by a number of concrete examples. Introductory chapters survey the technical problems and draw comparisons with spore dissemination in cryptogams and pollination in gymnosperms. The following chapters deal with angiosperm pollination and are divided into three parts: organs involved in pollination, flower types and pollinator activities
Book Synopsis Reproductive Ecology of Tropical Forest Plants by : K.S. Bawa
Download or read book Reproductive Ecology of Tropical Forest Plants written by K.S. Bawa and published by CRC Press. This book was released on 1991-01-15 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reproductive Ecology of Tropical Forest Plants reviews recent developments in the reproductive ecology of tropical forest plants and explores the implications of current findings on forest structure, function, management, and conservation. It examines how insights gained from reproductive ecology can be helpful in the management of tropical forest resources and discusses directions of future research.
Book Synopsis The Forgotten Pollinators by : Stephen L. Buchmann
Download or read book The Forgotten Pollinators written by Stephen L. Buchmann and published by Island Press. This book was released on 2012-06-22 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Consider this: Without interaction between animals and flowering plants, the seeds and fruits that make up nearly eighty percent of the human diet would not exist. In The Forgotten Pollinators, Stephen L. Buchmann, one of the world's leading authorities on bees and pollination, and Gary Paul Nabhan, award-winning writer and renowned crop ecologist, explore the vital but little-appreciated relationship between plants and the animals they depend on for reproduction -- bees, beetles, butterflies, hummingbirds, moths, bats, and countless other animals, some widely recognized and other almost unknown. Scenes from around the globe -- examining island flora and fauna on the Galapagos, counting bees in the Panamanian rain forest, witnessing an ancient honey-hunting ritual in Malaysia -- bring to life the hidden relationships between plants and animals, and demonstrate the ways in which human society affects and is affected by those relationships. Buchmann and Nabhan combine vignettes from the field with expository discussions of ecology, botany, and crop science to present a lively and fascinating account of the ecological and cultural context of plant-pollinator relationships. More than any other natural process, plant-pollinator relationships offer vivid examples of the connections between endangered species and threatened habitats. The authors explain how human-induced changes in pollinator populations -- caused by overuse of chemical pesticides, unbridled development, and conversion of natural areas into monocultural cropland-can have a ripple effect on disparate species, ultimately leading to a "cascade of linked extinctions."
Book Synopsis The Conservation of Bees by : Andrew Matheson
Download or read book The Conservation of Bees written by Andrew Matheson and published by . This book was released on 1996 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bees form a vital part of many natural and farmed landscapes all over the world. Both as pollinators and as a part of the wider insect community, their activities not only promote healthy ecosystems, but in many cases are essential to the life cycles of particular plant species. Their complex coevolutionary relationships to their forage plants are a subject of fascination to biologists and conservationists, and of economic importance to crop managers. But everywhere bees are under pressure, from the direct impact of pesticides in the environment, as well as the indirect effects of habitat alteration and destruction. This volume focuses on a number of important topics in bee biology and conservation in the temperate regions of four continents. The varieties of habitats needed for bees to thrive, the essential links and interactions between bees and many plant species, and the current state of bee biodiversity and conservation are all dealt with by an international cast of authors. Anyone with an interest either in bees in particular, or in insect and plant conservation in general will find something of interest in this book. Stresses the importance of bees as pollinators in the health of both agriculture and natural landscapes Discusses the coevolutionary biology of bees and their forage plants Focuses on bees as a vital component of biodiversity Includes contributors from Europe, U.S.A., Canada, Panama, and Isreal
Book Synopsis Ecosystem Health by : Robert Costanza
Download or read book Ecosystem Health written by Robert Costanza and published by . This book was released on 1992 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: As environmental regulatory and management agencies (most notably the Environmental Protection Agency) move toward a broad set of management goals to protect ecosystem health, developing an adequate definition for "ecosystem health" has become increasingly important. This work is a multidisciplinary collection of perspectives on the concept of health as it relates to ecosystems. The contributors - leading ecologists, philosophers, and economists - analyze the normative, conceptual, and biological issues surrounding the idea of ecosystem health. They examine both theoretical and practical aspects of the issues, and look at philosophical and ethical underpinnings as well as implications for public policy and ecosystems management. Ecosystem Health is a groundbreaking attempt to formulate an understanding of the quality and health of natural environments so that regulatory mandates can be brought in line with legislative goals. Ultimately, it seeks a new ethic of sustainability that will serve to protect the vital processes of nature.
Book Synopsis The Natural History of Pollination (Collins New Naturalist Library, Book 83) by : Michael Proctor
Download or read book The Natural History of Pollination (Collins New Naturalist Library, Book 83) written by Michael Proctor and published by HarperCollins UK. This book was released on 2012-11-29 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a brand new, fully updated edition of the natural history classic first published in the New Naturalist series in 1973 as The Pollination of Flowers. This edition is exclusive to newnaturalists.com
Book Synopsis Ecology and Natural History of Tropical Bees by : David W. Roubik
Download or read book Ecology and Natural History of Tropical Bees written by David W. Roubik and published by Cambridge University Press. This book was released on 1992-05-29 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Humans have been fascinated by bees for centuries. Bees display a wide spectrum of behaviours and ecological roles that have provided biologists with a vast amount of material for study. Among the types observed are both social and solitary bees, those that either pollinate or destroy flowers, and those that display traits allowing them to survive underwater. Others fly mainly at night, and some build their nests either in the ground or in the tallest rain forest trees. This highly acclaimed book summarises and interprets research from around the world on tropical bee diversity and draws together major themes in ecology, natural history and evolution. The numerous photographs and line illustrations, and the large reference section, qualify this book as a field guide and reference for workers in tropical and temperate research. The fascinating ecology and natural history of these bees will also provide absorbing reading for other ecologists and naturalists. This book was first published in 1989.
Book Synopsis Biogeography and Taxonomy of Honeybees by : Friedrich Ruttner
Download or read book Biogeography and Taxonomy of Honeybees written by Friedrich Ruttner and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Honeybees are as small as flies or as large as hornets, nesting in nar row cavities of trees and rocks or in the open on large limbs of trees 30 m above ground. They occur in tropical zones and in the forests of the Ural mountains, they survive seven months of winter and even longer periods of drought and heat. Historically, they lived through a extended time of stagnation in the tropics from the mid-Tertiary, but then experienced an explosive evolution during the Pleistocene, re sulting in the conquest of huge new territories and the origin of two dozen subspecies in Apis mellifera. This vast geographic and ecologic diversification of the genus Apis was accompanied by a rich morphological variation, less on the level of species than at the lowest rank, the subspecies level. Variation being exclusively of a quantitative kind at this first step of speciation, tradi tional descriptive methods of systematics proved to be unsatisfactory, and honeybee taxonomy finally ended up in a confusing multitude of inadequately described units. Effective methods of morphometric-sta tistical analysis of honeybee popUlations, centered on limited areas, have been developed during the last decades. Only the numerical characterization of the populations, together with the description of behavior, shows the true geographic variability and will end current generalizations and convenient stereotypes.
Book Synopsis Africanized Honey Bees and Bee Mites by : Glen R. Needham
Download or read book Africanized Honey Bees and Bee Mites written by Glen R. Needham and published by . This book was released on 1988 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Ecological Web by : H. G. Andrewartha
Download or read book The Ecological Web written by H. G. Andrewartha and published by University of Chicago Press. This book was released on 1986-07 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book is the naturalist's vision of population ecology ..." P.J. den Boer -- Book Cover
Book Synopsis Biological Pest Control by : Norman Waltham Hussey
Download or read book Biological Pest Control written by Norman Waltham Hussey and published by . This book was released on 1985 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: History of biological control in protected culture; Biology of pests and natural enemies; biology of minor pests; Practical experience with biological control; Integration of biological and chemical control; Integrated programmes for specific pests; Implications for biological control on intensively grown outdoor crops; Mass production of natural enemies; Production and commercialization of pathogens; The economic equation; International co-operation; Commercial producers of beneficial insects.
Book Synopsis Plant Biosystematics by : William F. Grant
Download or read book Plant Biosystematics written by William F. Grant and published by Elsevier. This book was released on 2013-09-25 with total page 691 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Biosystematics is a compendium of papers from a symposium titled "Plant Biosystematics: Forty Years Later" held in Montreal in July 1983. This collection reviews the current field of biosystematics, particularly the evolution of natural biota, and how plant biosystematics can contribute to the welfare of humans. One paper reviews biosystematics, compares new approaches, and discusses the latest trend in comparative, molecular evolution of genes. One author discusses the cytology and biosystematics concerning the discontinuities and genetic independence occurring in the evolutionary process. Another author discusses chromosome pairing in species and hybrids that includes models of chromosome pairing in diploids. The text also describes chromosome banding and biosystematics, as well as the problems of chromosome banding that should be addressed to in future research. With estimates of the number of species being threatened with extinction numbering around 20,000 one paper address the issue of conservation and biosystematics. The author suggests that more biological information should be published to avoid duplication of effort, and possibly drive scientists to have their views more widely felt. Agriculturists, botanists, conservationists, environmentalists, and researchers in the field of botany, conservation, and plant genealogy will find this book valuable.
