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Author: Publisher: UNEP/Earthprint ISBN: 9789280729528 Category : Nature Languages : en Pages : 70
Book Description
Population growth, urbanisation and economic growth in general, all exert pressure on water resources through increased demand and pollution. Water is essential for life and it's supply for safe drinking water, food, health and the environment needs to be secured. This 57 page summary with CD-ROM provides the status of water resources across the continents of Africa and Asia for major rivers, lakes and groundwater basins. The joint Africa-Asia study is intended for managers, planners and other key decision-makers in water resources management and governments.
Author: Publisher: UNEP/Earthprint ISBN: 9789280729528 Category : Nature Languages : en Pages : 70
Book Description
Population growth, urbanisation and economic growth in general, all exert pressure on water resources through increased demand and pollution. Water is essential for life and it's supply for safe drinking water, food, health and the environment needs to be secured. This 57 page summary with CD-ROM provides the status of water resources across the continents of Africa and Asia for major rivers, lakes and groundwater basins. The joint Africa-Asia study is intended for managers, planners and other key decision-makers in water resources management and governments.
Author: David Dudgeon Publisher: Cambridge University Press ISBN: 1108882625 Category : Nature Languages : en Pages : 517
Book Description
Growing human populations and higher demands for water impose increasing impacts and stresses upon freshwater biodiversity. Their combined effects have made these animals more endangered than their terrestrial and marine counterparts. Overuse and contamination of water, overexploitation and overfishing, introduction of alien species, and alteration of natural flow regimes have led to a 'great thinning' and declines in abundance of freshwater animals, a 'great shrinking' in body size with reductions in large species, and a 'great mixing' whereby the spread of introduced species has tended to homogenize previously dissimilar communities in different parts of the world. Climate change and warming temperatures will alter global water availability, and exacerbate the other threat factors. What conservation action is needed to halt or reverse these trends, and preserve freshwater biodiversity in a rapidly changing world? This book offers the tools and approaches that can be deployed to help conserve freshwater biodiversity.
Author: Tim Caro Publisher: Island Press ISBN: 159726959X Category : Nature Languages : en Pages : 394
Book Description
The vast scope of conservation problems has forced biologists and managers to rely on "surrogate" species to serve as shortcuts to guide their decision making. These species-known by a host of different terms, including indicator, umbrella, and flagship species-act as proxies to represent larger conservation issues, such as the location of biodiversity hotspots or general ecosystem health. Synthesizing an immense body of literature, conservation biologist and field researcher Tim Caro offers systematic definitions of surrogate species concepts, explores biological theories that underlie them, considers how surrogate species are chosen, critically examines evidence for and against their utility, and makes recommendations for their continued use. The book clarifies terminology and contrasts how different terms are used in the real world considers the ecological, taxonomic, and political underpinnings of these shortcuts identifies criteria that make for good surrogate species outlines the circumstances where the application of the surrogate species concept shows promise Conservation by Proxy is a benchmark reference that provides clear definitions and common understanding of the evidence and theory behind surrogate species. It is the first book to review and bring together literature on more than fifteen types of surrogate species, enabling us to assess their role in conservation and offering guidelines on how they can be used most effectively.
Author: Anja du Plessis Publisher: Springer ISBN: 3030031861 Category : Science Languages : en Pages : 311
Book Description
The book presents an interdisciplinary systematic evaluation of increasing water stress and scarcity over the globe and specifically South Africa. South Africa is used as the prime example as the country is experiencing similar water challenges in terms of availability and quality as most regions across the globe. Water availability is predominantly used to illustrate water scarcity however, continued degradation of the world’s freshwater resources, by a multitude of natural and anthropogenic factors, have consequently exacerbated water stress and scarcity due to it being of insufficient quality for various uses. The increase of water scarcity through both natural and anthropogenic factors has in turn led to water being viewed as an increasing risk within all spheres. Water as a source of conflict has come to the forefront especially within regions which struggle to meet the increasing demands from different water users and trying to achieve future sustainability of the resource. The increase of water scarcity and stress as well as the continued pressure of population and economic growth has brought various new challenges into play. This book focuses on water as an increasing risk over the globe and specifically South Africa by reviewing both water availability and quality, evaluating water as a global and national risk. The book concludes by focusing on current limitations, necessary strategic actions as well as possible policy-related changes which may be required to adapt to future water challenges and to lessen water as an increasing risk.
Author: National Research Council Publisher: National Academies Press ISBN: 0309145880 Category : Science Languages : en Pages : 526
Book Description
Climate change is occurring, is caused largely by human activities, and poses significant risks for-and in many cases is already affecting-a broad range of human and natural systems. The compelling case for these conclusions is provided in Advancing the Science of Climate Change, part of a congressionally requested suite of studies known as America's Climate Choices. While noting that there is always more to learn and that the scientific process is never closed, the book shows that hypotheses about climate change are supported by multiple lines of evidence and have stood firm in the face of serious debate and careful evaluation of alternative explanations. As decision makers respond to these risks, the nation's scientific enterprise can contribute through research that improves understanding of the causes and consequences of climate change and also is useful to decision makers at the local, regional, national, and international levels. The book identifies decisions being made in 12 sectors, ranging from agriculture to transportation, to identify decisions being made in response to climate change. Advancing the Science of Climate Change calls for a single federal entity or program to coordinate a national, multidisciplinary research effort aimed at improving both understanding and responses to climate change. Seven cross-cutting research themes are identified to support this scientific enterprise. In addition, leaders of federal climate research should redouble efforts to deploy a comprehensive climate observing system, improve climate models and other analytical tools, invest in human capital, and improve linkages between research and decisions by forming partnerships with action-oriented programs.
Author: Graeme L. Worboys Publisher: ANU Press ISBN: 1925021696 Category : Nature Languages : en Pages : 993
Book Description
Protected Area Governance and Management presents a compendium of original text, case studies and examples from across the world, by drawing on the literature, and on the knowledge and experience of those involved in protected areas. The book synthesises current knowledge and cutting-edge thinking from the diverse branches of practice and learning relevant to protected area governance and management. It is intended as an investment in the skills and competencies of people and consequently, the effective governance and management of protected areas for which they are responsible, now and into the future. The global success of the protected area concept lies in its shared vision to protect natural and cultural heritage for the long term, and organisations such as International Union for the Conservation of Nature are a unifying force in this regard. Nonetheless, protected areas are a socio-political phenomenon and the ways that nations understand, govern and manage them is always open to contest and debate. The book aims to enlighten, educate and above all to challenge readers to think deeply about protected areas—their future and their past, as well as their present. The book has been compiled by 169 authors and deals with all aspects of protected area governance and management. It provides information to support capacity development training of protected area field officers, managers in charge and executive level managers.
Author: Larbi Bouguerra Publisher: Zed Books ISBN: 9781842777053 Category : Business & Economics Languages : en Pages : 228
Book Description
Water has been described as 'the oil of the 21st century' with rapid population growth, climate change and pollution conspiring to make it the resource over which wars may be fought in years to come. But does water have a price? Is it a right or a need? Increasingly, water is viewed as a commodity whose function is to generate profits. In this book, Larbi Bouguerra argues that instead we should view it as a common good of humanity. Water has an exceptional cross-cultural symbolic value and its use raises enormous questions about our lifestyle, our ethics and our relationship to nature. Bouguerra makes a powerful case for a society that is more economical with water and manages it openly and democratically, as a global resource.
Author: National Research Council Publisher: National Academies Press ISBN: 9780309045346 Category : Technology & Engineering Languages : en Pages : 580
Book Description
Aldo Leopold, father of the "land ethic," once said, "The time has come for science to busy itself with the earth itself. The first step is to reconstruct a sample of what we had to begin with." The concept he expressedâ€"restorationâ€"is defined in this comprehensive new volume that examines the prospects for repairing the damage society has done to the nation's aquatic resources: lakes, rivers and streams, and wetlands. Restoration of Aquatic Ecosystems outlines a national strategy for aquatic restoration, with practical recommendations, and features case studies of aquatic restoration activities around the country. The committee examines: Key concepts and techniques used in restoration. Common factors in successful restoration efforts. Threats to the health of the nation's aquatic ecosystems. Approaches to evaluation before, during, and after a restoration project. The emerging specialties of restoration and landscape ecology.
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Author: David Dudgeon
Author: Tim Caro
Author: Anja du Plessis
Author: National Research Council
Author: Graeme L. Worboys
Author: Gerry Closs
Author: Frederick D. Gordon
Author: Larbi Bouguerra
Author: National Research Council