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Pond Fisheries

A comprehensive study of pond fisheries. Topics include the organisation and construction of fish ponds, production processes in fish farms for warmwater carp and cold-water trout, and irrigation networks and reservoirs constructed for multipurpose exploitation.

Pond Fisheries

A comprehensive study of pond fisheries. Topics include the organisation and construction of fish ponds, production processes in fish farms for warmwater carp and cold-water trout, and irrigation networks and reservoirs constructed for multipurpose exploitation.

Post-Harvest Physiology and Crop Preservation (Nato Science Series A: #46)

Emphasis in agricultural research for many years has concen­ trated on crop production. This emphasis has become more important in recent years with the realization that the population worldwide is outstripping the food supply. There is, however, another side to increasing the availability of the food supply. This simply involves preservation of the harvested crop·for human consumption. The losses incurred in harvesting, handling, transportation, storage and marketing crops have become a greater problem as the distance from the farm to the ultimate consumer increases. In the Western world where modern transportation, storage facilities, and marketing technology are widely used, post-harvest technology requires a large input of energy which increases costs considerably. There­ fore, losses are more significant and the ability to provide fresh fruits and vegetables, out of season, at reasonable costs will depend on reduced post-harvest losses throughout the marketing chain from the farm gate to the ultimate consumer. The reduction in post-harvest losses depends on proper use of current technology and further developments derived from a broad spectrum of scientific disciplines. Biochemistry, plant physiology, plant pathology, horticulture, agronomy, physics, engineering and agricultural economics, all provide knowledge which has been useful and will be useful in the future for improving post-harvest technol­ ogy and crop preservation. This volume records the Proceedings of the NATO Advanced Study Institute on Post-Harvest Physiology and Crop Preservation, held at Sounion, Greece, April 28 - May 8, 1981.

Productivity Effects of Cropland Erosion in the United States (Routledge Revivals)

In the 1970’s, agriculture in the United States seemed to be booming. With an extra demand for crops, extra acres were taken on to increase production which was predicted to increase further with an ever-growing population. However, concerns were beginning to be raised over the adequacy of land for crops as potential croplands began to be converted into urban areas as well as the effects of soil erosion decreasing the quality of these croplands. Originally published in 1983, this study investigates the threats to crop productivity in the U.S. with a focus on human-made problems. This title will be of interest to students of environmental studies.

Productivity Effects of Cropland Erosion in the United States (Routledge Revivals)

In the 1970’s, agriculture in the United States seemed to be booming. With an extra demand for crops, extra acres were taken on to increase production which was predicted to increase further with an ever-growing population. However, concerns were beginning to be raised over the adequacy of land for crops as potential croplands began to be converted into urban areas as well as the effects of soil erosion decreasing the quality of these croplands. Originally published in 1983, this study investigates the threats to crop productivity in the U.S. with a focus on human-made problems. This title will be of interest to students of environmental studies.

Radioaktive Abfälle: Probleme und Verantwortung

Summits and Secrets: The Kurt Diemberger autobiography

‘A book grows rather like a snow crystal. One doesn’t write it from start to finish but, in greater or less degree, all at the same time … that is why my book is not in chronological order; for everything is of the present, held in the moment when thought captures it.’Kurt Diemberger’s Summits and Secrets is a mountaineering autobiography like no other. Writing anecdotally, Diemberger provides an abstract look into his life and climbing career that is both fascinating and awe-inspiring to navigate.Known for surviving the 1986 K2 disaster – an account described in harrowing detail in his award-winning book The Endless Knot – Diemberger provides a captivating insight into his earlier climbs in Summits and Secrets. From climbing his first peak in the Tyrol mountains of Austria, to the epoch-making first ascent of Broad Peak with Hermann Buhl in 1957, and then summiting Dhaulagiri in 1960, where he became one of only two people to have made first ascents of two mountains over 8,000 metres, Diemberger recounts his experiences with wit, honesty and an infectious enthusiasm:‘Every climber knows the thrill … the unique inexplicable tension, which the regular shapes of the mountain world awake in him: huge pyramids, enormous rectangular slabs, piled-up triangles of rock, white circles, immense squares – the thrill of simplicity of shape and outline and the excitement of mastering them, to an unbelievable extent, by his own efforts, his own power … ’Summits and Secrets is a must-read for those wanting an insight into the life and achievements of one of the toughest high-altitude climbers the world has ever known.

U.S. Interests and Global Natural Resources: Energy, Minerals, Food (Routledge Revivals)

Originally published in 1983, U.S. Interests and Global Natural Resources explores the links between foreign policy and the global distribution of natural resources paying particular attention to the U.S. This collection of essays delves into the importance of factors such as differing economic development and political hostility could have on the provision of resources into the U.S and advises that nations identify their countries needs and establish policies to safeguard them. This title will be of interest to students of Environmental Studies and Policy makers.

U.S. Interests and Global Natural Resources: Energy, Minerals, Food (Routledge Revivals)

Originally published in 1983, U.S. Interests and Global Natural Resources explores the links between foreign policy and the global distribution of natural resources paying particular attention to the U.S. This collection of essays delves into the importance of factors such as differing economic development and political hostility could have on the provision of resources into the U.S and advises that nations identify their countries needs and establish policies to safeguard them. This title will be of interest to students of Environmental Studies and Policy makers.

Advances in Microbial Ecology: Volume 6 (Advances in Microbial Ecology #6)

This volume of Advances in Microbial Ecology marks a change in the editor­ ship of the series. The Editorial Board wishes to take this opportunity to express its gratitude to Martin Alexander, the founding editor and editor of the first five volumes, for his enterprise in establishing the series and in ensuring that Advances has become an outstanding focal point for the identification of new developments in the rapidly expanding field of microbial ecology. With the publication of this volume, we welcome Howard Slater to the Editorial Board. The policies of the Editorial Board remain the same as before. Most con­ tributions to Advances in Microbial Ecology will be solicited by the Board. However, individuals are encouraged to submit outlines of unsolicited contri­ butions to the Board for consideration for inclusion in the series. Advances is designed to serve an international audience and to provide critical reviews on basic and applied aspects of microbial ecology. Contributions in the present volume are predominantly concerned with the ecology of aquatic microorganisms, but encompass a variety of approaches to this area. The exception is the chapter by J. W. Doran on the role of micro­ organisms in the cycling of selenium. G-Y. Rhee discusses the effects of envi­ ronmental factors on phytoplankton growth. The factors limiting the produc­ tivity of freshwater microbial ecosystems are considered by H. W. Paerl.

Anthropogenic Compounds (The Handbook of Environmental Chemistry #3 / 3B)

Environmental Chemistry is a relatively young science. Interest in this subject, however, is growing very rapidly and, although no agreement has been reached as yet about the exact content and limits of this interdisciplinary discipline, there appears to be increasing interest in seeing environmental topics which are based on chemistry embodied in this subject. One of the first objectives of Environmental Chemistry must be the study of the environment and of natural chemical processes which occur in the environment. A major purpose of this series on Environmental Chemistry, therefore, is to present a reasonably uniform view of various aspects of the chemistry of the environment and chemical reactions occurring in the environment. The industrial activities of man have given a new dimension to Environmental Chemistry. We have now synthesized and described over five million chemical compounds and chemical industry produces about hundred and fifty million tons of synthetic chemicals annually. We ship billions of tons of oil per year and through mining operations and other geophysical modifications, large quantities of inorganic and organic materials are released from their natural deposits. Cities and metropolitan areas of up to 15 million inhabitants produce large quantities of waste in relatively small and confined areas. Much of the chemical products and waste products of modern society are released into the environment either during production, storage, transport, use or ultimate disposal. These released materials participate in natural cycles and reactions and frequently lead to interference and disturbance of natural systems.

Application of Electro-Ultrafiltration (EUF) in Agricultural Production: Proceedings of the First International Symposium on the Application of Electro-Ultrafiltration in Agricultural Production, organized by the Hungarian Ministry of Agriculture and the Central Research Institute for Chemistry of the Hungarian Academy of Sciences, Budapest, May 6–10, 1980

The Symposium was organized by the Hungarian Ministry of Agriculture and the Central Research Institute for Chemistry of the Hungarian Academy of Sciences. This arduous task was coordinated by Dr. Varju to whom I wish to express my appreciation for his whole-hearted assistance. After the Symposium the participants had the opportunity to visit the vineyards and cellars of the 'Balatonboglar' state holding which proved of great interest. The First International EUF Symposium owes its success to the excellent cooperation between the Biintehof Agricultural Research Station and the Hungarian Ministry of Agriculture, including the Central Research Institute for Chemistry of the Hungarian Academy of Sciences. The objective of the Symposium was to present the first results and experience gained with the EUF procedure, so that the papers delivered are only a survey of the present-day state of knowledge. The bulk of the work of editing, including the selection of the articles, fell on Prof. Dr. van Diest, Wageningen, for whose valuable advice and untiring efforts I wish to record my special thanks. Some of the papers presented at the Symposium have already been published elsewhere and they will not appear in this issue.

Biogas — Methangärung organischer Abfallstoffe: Grundlagen und Anwendungsbeispiele (Innovative Energietechnik)

Cardiovascular System Dynamics: Models and Measurements

Collective Action

Public choice, an important subdiscipline in the field of political theory, seeks to understand how people and societies make decisions affecting their collective lives. Relying heavily on theoretical models of decision making, public choice postulates that people act in their individual interests in making collective decisions. As it happens, however, reality does not mirror theory, and people often act contrary to what the principal public choice models suggest. In this book, Russell Hardin looks beyond the models to find out why people choose to act together in situations that the models find quite hopeless. He uses three constructs of modern political economy--public goods, the Prisoner's Dilemma, and game theory--to test public choice theories against real world examples of collective action. These include movements important in American society in the past few decades--civil rights, the Vietnam War, women's rights, and environmental concerns. This classic work on public choice will be of interest to theoreticians and graduate students in the fields of public choice, political economy, or political theory--and to those in other disciplines who are concerned with the problem of collective action in social contexts.

Current Issues in Natural Resource Policy (Routledge Revivals)

This volume offers an objective view of some of the most critical issues in natural resources. Written in nontechnical language, it uses ideas drawn from economics to look at the issues, examine how government laws and policies have caused some of them arise, and to find ways in which problems can be lessened. Originally published in 1982, this is a valuable resource for students interested in environmental studies and public policy.

Current Issues in Natural Resource Policy (Routledge Revivals)

This volume offers an objective view of some of the most critical issues in natural resources. Written in nontechnical language, it uses ideas drawn from economics to look at the issues, examine how government laws and policies have caused some of them arise, and to find ways in which problems can be lessened. Originally published in 1982, this is a valuable resource for students interested in environmental studies and public policy.

Disaster and Reconstruction (Routledge Revivals)

Originally published in 1982 and based on empirical research into the aftermath of the Friuli earthquake in Italy, the book reflects the perspective gained over a period of four years on the event itself and the subsequent response of the local population and national government. Unique insights were gained through one of the largest questionnaire surveys ever undertaken in a disaster situation and important questions are posed concerning the policies of reconstruction. Is a disaster ‘the great equalizer’ and does regional society emerge from it with redistributed power relationships, or are established structures reinforced? Who gets hurt and who benefits? What effects do poverty, regional remoteness from central government and the ethnic and cultural dimensions have on the situation? As a substantial treatment of a major catastrophe in all its aspects, this book will be of interest to students and researchers concerned with the impact of and response to natural hazards. It is based on a unique event, but the findings it reveals are relevant to all major catastrophes.

Disaster and Reconstruction (Routledge Revivals)

Originally published in 1982 and based on empirical research into the aftermath of the Friuli earthquake in Italy, the book reflects the perspective gained over a period of four years on the event itself and the subsequent response of the local population and national government. Unique insights were gained through one of the largest questionnaire surveys ever undertaken in a disaster situation and important questions are posed concerning the policies of reconstruction. Is a disaster ‘the great equalizer’ and does regional society emerge from it with redistributed power relationships, or are established structures reinforced? Who gets hurt and who benefits? What effects do poverty, regional remoteness from central government and the ethnic and cultural dimensions have on the situation? As a substantial treatment of a major catastrophe in all its aspects, this book will be of interest to students and researchers concerned with the impact of and response to natural hazards. It is based on a unique event, but the findings it reveals are relevant to all major catastrophes.

The Economics of Managing Chlorofluorocarbons: Stratospheric Ozone and Climate Issues (Routledge Revivals)

Chlorofluorocarbons are known to be effective spray can propellants, solvents and refrigerators and were often used in deodorants, refrigerators and other goods. However, it was not known at the beginning of their use, the complex reaction that CFCs have on the earth’s climate. Originally published in 1982, this report explores early research into the effect that CFCs have on the environment and provides guidance on how this emerging issue should be dealt with. This title will be of interest to students of Environmental Studies.

The Economics of Managing Chlorofluorocarbons: Stratospheric Ozone and Climate Issues (Routledge Revivals)

Chlorofluorocarbons are known to be effective spray can propellants, solvents and refrigerators and were often used in deodorants, refrigerators and other goods. However, it was not known at the beginning of their use, the complex reaction that CFCs have on the earth’s climate. Originally published in 1982, this report explores early research into the effect that CFCs have on the environment and provides guidance on how this emerging issue should be dealt with. This title will be of interest to students of Environmental Studies.

Environmental Factors and Cultural Measures Affecting The Nitrate Content in Spinach

The present investigation was carried out in the period 1977-1981 at the Department of Soil Science and Plant Nutrition of the Agricultural University Wageningen, Netherlands. This university supplied the major financial sup­ port through a research grant, with additional financial support rendered by the Dutch Nitrogen Fertilizer Industry and Unilever Research, Netherlands. This support is gratefully acknowledged. In the present form this report is the author's doctoral dissertation submitted to the Faculty of the Agricul­ tural University. The author hereby wishes to thank prof. dr. ir. A. van Diest for his criti­ cal reading and correction of the English text, and drjr. J. H. G. Slangen for his valuable advices during the investigations and in the course of the preparation of this report. The au thor also acknowledges the valuable support received from several Agricultural Research Institutes and University Depart­ ments which made facilities and manpower available to conduct the ex­ periments and to transform the results obtained into the present report. Contents Preface / v Abstract / 1 List of ab breviations / 2 Introduction / 3 2 Literature / 6 2. 1 Nitrogen transformations in soil / 7 2. 2 Nitrate uptake / 7 Nitrate reduction in plants / 7 2. 3 2. 4 Nitrate contents in plants / 8 2. 5 Cultural measures / 9 2. 5. 1 Nitrogen dressing / 9 2. 5. 1. 1 Nitrogen amount / 9 2. 5 . 1.

Experimental Embryology of Vascular Plants

A long time ago botany used to be regarded as the scientia amabilis, the friendly science, eminently suitable for leisured amateurs. Since then, and particularly in this century, it has grown tremendously in its importance and in its intimate contacts with various other disciplines of science, some of which, like plant genetics and plant physiology, at one time indeed used to be included under the broad term botany. In spite of the fact that such subjects have expanded into major scientific fields of their own, botany, the mother science, continues to maintain its central place: this is because it deals with plants which constitute one of the most vital life-supporting systems of this planet. Furthermore, interacting and benefiting from advances made in other sciences, it has steadily progressed in a number of areas. Experimental embryology of vascular plants is one such field where spectacular advances have been made in recent years. The time is therefore particularly opportune for the publication of an authoritative book on the subject. It is very appropriate that the book has been planned and edited by Professor B. M. Johri, one of India's foremost botanists, whose contributions in embryology, plant morphology and morphogenesis are internationally known. He was closely associated over a number of years with Professor P. Maheshwari, the great botanist and embryologist, to whom the book is dedicated.

Ferns and Allied Plants: With Special Reference to Tropical America

This systematic treatment of the ferns and allied plants provides a modern classification of the Pteridophyta based on an assess­ ment of the wealth of new data published during the last few decades as well as on our own research. The accounts of the gen­ era include systematics, ecology, geography, spores and cytology and often other aspects of their biology. The scope of the work has involved all genera and the Old World species of those gen­ era represented in America. For a few American genera, that are especially complex in the Old World, it has been necessary to limit their treatment to the American representatives and this is specifically indicated in those cases. The eight American genera that do not occur in the tropics are treated in less detail. They are Camptosorus, Gymnocarpium, Matteuccia and Onoclea of North America, Arthropteris and Thyrsopteris of the Juan Fernandez Islands, Pleurosorus of southern South America, and the amphi­ tropical Cryptogramma. The complete generic nomenclature is included, except in a few specified cases where taxonomic complexities of the Old World elements have not been resolved. The synonyms and ac­ cepted names of subgeneric and sectional taxa are included only when pertinent to the generic nomenclature or to an infrageneric classification. Only the name of a publishing author is cited. There is no bibliographic purpose served by including the name of a person who was the source of, but did not validly publish, a name or epithet.

Freshwater Recreational Fishing: The National Benefits of Water Pollution Control (Routledge Revivals)

The Federal Water Pollution Control Act, signed into law in 1972, dramatically redirected the nation’s water pollution control efforts and set out ambitious national goals, expressed both in terms of discharge controls and of resulting water quality. Originally published in 1982, this title examines the benefits that a reduction in the discharge of water pollutants has for recreational fisherman including an increase in the total availability of fishable natural water bodies and an improvement in the aesthetic quality of the fishing experience. It is a valuable resource for students interested in environmental studies and public policy making.