Product Description
This publication is the first in a three part series on HIV/AIDS and agriculture in sub-Saharan Africa with the overall objective of providing a resource base on issues of rural development in a broad sense in the times of HIV/AIDS. This first book discusses the impact of the epidemic as it has emerged over the last decades at different levels of the agricultural sector, namely the farming system level, the livelihood level, and the household level. In a further step, impact on the agricultural estate sector as well as pastoralism is discussed. One overarching issue that emerges is the importance of gender attributes to adequately understand and address HIV/AIDS impact - the topic at the centre of the second part of the series. The text ends with a discussion of HIV/AIDS in relation to other shocks that befall rural livelihoods. It is followed by an annotated bibliography. ... Read more

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The premise on which this book is based is that the 10,000 years of experience and knowledge embodied in traditional agriculture and local cultures can be combined with modern agricultural science to develop more sustainable, environmentally sound and useful agricultural practices. In a survey of indigenous systems worldwide, the author evaluates the labour requirements, external inputs, effectiveness and practicality of the techniques developed by farmers, and suggests ways in which these traditional methods could contribute to today's environmental ethic and agriculture. ... Read more

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With regional, national, and global processes affecting both the structure and function of lakes and rivers, assessment methodology must encompass many attributes to evaluate the impact of these processes on water quality. Many of the changes in biological communities correlate to resource exploitation, nonpoint pollutant interactions, and habitat alteration - factors that can be missed by routine chemical sampling. This creates the need for ecologically-based approaches to this problem.Biological monitoring is a fundamental part of an ecologically-based approach. Biological Monitoring of Aquatic Systems brings together contributions by authors recognized as leaders in the development and utilization of biological monitoring techniques for freshwater ecosystems. It provides a conceptual framework for the use of biological monitoring to assess the environmental health of freshwater resources. Biological monitoring is an important part of any water quality assessment program. Biological Monitoring of Aquatic Systems provides you with an understanding of water resources. It includes discussions concerning historical development, ecological basis, experimental design characteristics, case studies, and future concerns. As efforts to maintain and restore the world's water resources intensify, the need to develop accurate methods to assess the health of these resources becomes critical. ... Read more

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Marine and coastal applications of GIS are finally gaining wide acceptance in scientific as well as GIS communities, and cover the fields of deep sea geology, chemistry and biology, and coastal geology, biology, engineering and resource management.Comprising rigorous contributions from a group of leading scholars in marine and coastal GIS, this book will inspire and stimulate continued research in this important new application domain of GIS. ... Read more

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The primary objective of this book is to provide basic information and considerations needed for the design, construction and operation of seawater systems for culturing purposes.The seawater flow rate range of 10-1000 gallons (approximately 40-4000 liters) per minute, has been chosen because it includes the vast majority of such systems currently in use.While the objectives of these systems vary widely, they all depend on a common technological and biological data base.Since the seawater system is usually only a means to an end, most potential users have little prior practical experience or technical knowledge in this area.Practical information on seawater systems for culturing purposes tends to be fragmented and not readily available in usable form.Most conventional engineering experience is with marine systems which are orders of magnitude larger.This technology is often not readily scaled down, or directly useable, and more than likely prohibitively expensive.

The subject of this book crosses many different disciplines, interests, and backgrounds.This can cause considerable confusion with definitions and units of measure.Mixed systems of units are common and often unavoidable.Even within a system of measure, there may be several different parameters and units commonly used for a particular purpose.Appendix A provides definitions, conversion factors between units, and important constants to reduce this confusion.

The book is not intended for the experts or those already very experienced with seawater systems, although experts may find the substantial accumulation of readily accessible data to be of value.It is intended for use by those needing this information for practical applications.These include researchers, culturists, hatchery people, educators and holders of food or reserarch specimens.

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