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2009 | Buch

Coping with Water Scarcity

Addressing the Challenges

verfasst von: Dr Luis Santos Pereira, Dr Ian Cordery, Dr Iacovos Iacovides

Verlag: Springer Netherlands

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Über dieses Buch

One of the main problems confronting the world of the 21st Century is a shortage of water. There is already severe scarcity in many regions of the world, causing tremendous problems for local populations and indeed entire societies. There is insufficient water available for the production of food to alleviate poverty and starvation; the lack of water hampers industrial, urban and tourism development, forcing restrictions on other sectors, especially agriculture; health problems arise as the deterioration of ground and surface waters favours water-borne diseases, which flourish in the absence of decent water distribution and sewerage systems. Water conflicts still arise in areas under stress, while water for nature has become a vanishing priority in such zones.

This book is a guide to the establishment of regional and/or local guidelines for developing and implementing new ideas for coping with water scarcity. The basic premise underlying the book is that water scarcity will persist, so personal, human and society-wide skills will be needed to cope with it while living in harmony with the necessary environmental constraints. The book provides basic information to assist decision makers, water managers, engineers, agronomists, social scientists and other professions (and their students) in formulating coherent, hopefully harmonious and consolidated views on the issue. Guidelines are also given for introducing the general public to the concept of water scarcity and how to deal with it.

Inhaltsverzeichnis

Frontmatter
Chapter 1. Introduction
Water scarcity is among the main problems to be faced by many societies and the World in the XXI century. Water scarcity is commonly defined as a situation when water availability in a country or in a region is below 1000 m3/person/year. However, many regions in the World experience much more severe scarcity, living with less than 500 m3/person/year, which could be considered severe water scarcity. The threshold of 2000 m3/person/year is considered to indicate that a region is water stressed since under these conditions populations face very large problems when a drought occurs or when man-made water shortages are created. However, the concept of water availability based on indicators driven from the renewable water resources divided by the total population should be taken with great care. It is often the case that the renewable resource is augmented by desalination, non-renewable groundwater resources and wastewater re-use to compensate for their renewable water scarcity. Where there is little opportunity for irrigation, smaller per capita volumes may be adequate.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 2. Water Scarcity Concepts
Abstract
A range of concepts relative to water scarcity are discussed in this chapter. Natural scarcity resulting from arid and semi-arid climates and drought is one issue, and a second is man-made scarcity which is associated with desertification and water shortage due to poor management. Separation of these two causes brings into focus the effects of both water quality and water quantity on water scarcity. An introductory discussion of the respective water management issues and implications for sustainable development are consequently presented.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 3. Physical Characteristics and Processes Leading to Water Scarcity
Abstract
The physical characteristics and processes leading to water scarcity complement the discussion of concepts presented in the preceding chapter. Climatic conditions dominant in water scarce regions are analysed, particularly rainfall variability and evaporation. Other contributors to water scarcity such as the essential hydrologic characteristics of the region, the processes affecting groundwater recharge and availability, and sediment loads and water quality, including those aspects leading to desertification and water-shortage are also discussed. The importance of data collection and data quality assessment for planning and management studies are outlined.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 4. Droughts and Desertification
Abstract
An in-depth examination of drought concepts, drought indices and their definitions, prediction, and forecasting is given. Monitoring of drought and drought risk management tools are discussed. Desertification concepts, indicators, monitoring and information tools are presented from the perspective of supporting the identification of vulnerability to desertification together with measures and practices that may be used to combat desertification.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 5. Conceptual Thinking in Coping with Water Scarcity
Abstract
There are important conceptual and ownership issues that can over-ride the physical and engineering aspects of coping with water scarcity. Water has a very high value for support of life, but it is often not fully valued by the community of water users. How do we place a value on water? What are its social, environmental, economic, and cultural values? Who owns the water? Who has the right to collect, store, allocate, distribute and sell or lease water? Who has the authority, and how do they proceed, to set the price to be paid for water? How are ownership and accessibility managed where water crosses political boundaries?
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 6. SurfaceWater Use and Harvesting
Abstract
Ideas for maximising the availability of surface water for human use are proposed. These ideas are presented to support planning and management initiatives to provide more water for domestic or industrial supply or for crop growth for production of food and fibre. These refer to both large and small scale projects, including water harvesting. Attention is given to reservoir planning and management, as well as to control of water losses and non-beneficial uses of water. Particular attention is given to environmental and health issues in relation to the use of surface water.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 7. Groundwater Use and Recharge
Abstract
Principal aspects of groundwater use and recharge are reviewed in the {perspective} of achieving sustainable groundwater development, i.e. avoiding groundwater degradation. The analysis concerns both major aquifers and well fields and minor aquifers of local importance, such as in islands. It includes issues for exploitation and management, as well as requirements for aquifer monitoring and control and maintenance of wells, pumps and other facilities. Attention is paid to the effects and environmental impacts of aquifer over-exploitation as well as to artificial recharge and the need for conjunctive use of surface- and groundwater.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 8. Using Non-conventionalWater Resources
Abstract
Taking account of its importance in water scarce regions, the use of non-conventional water resources to complement or replace the use of usual sources of fresh water is discussed. The use of wastewater is considered for irrigation purposes, for aquaculture and for aquifers recharge. Attention is paid to the control of possible associated health risks. Another resource considered in this chapter is saline water and assessment of its suitability for irrigation and related uses. Also dealt with are the use of desalinated water, fog water capture, water harvesting, groundwater harvesting, cloud seeding, and water transfers.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 9. Water Conservation and Saving: Concepts and Performance
Abstract
Water use concepts and performance that may be useful in analysing water conservation and saving are dealt with in some detail in this chapter. New indicators are proposed include the consideration of water reuse and assist in identifying beneficial and non-beneficial water uses. An analysis of water productivity concepts useful in irrigation and for other uses is also included. These approaches are complemented with a review of water conservation and saving measures relative to the various water scarcity regimes.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 10. Water Conservation and Saving Measures and Practices
Abstract
This chapter aims to present a variety of water conservation and saving measures and practices applicable to the diverse water user sectors: urban water supply systems, domestic use, applications to landscape and recreational areas, industry and energy uses, rainfed and irrigated agriculture. Measures and practices are described particularly with respect to applications in local, regional or national action plans for efficient water use.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 11. Social, Economic, Cultural, Legal and Institutional Constraints and Issues
Abstract
The social, economic, cultural, legal and institutional constraints and issues relative to water management to cope with (high) water scarcity are discussed as oriented to local communities, urban developments, rural areas, user groups, and administrative, public and private organisations which are concerned with water supply.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Chapter 12. Education
Abstract
Education is a fundamental aspect of coping with water scarcity. The focus of the discussion is to consider how attitudes can be changed and how an educational program may be established. Education is meant in the widest sense, aimed at children and youths, women, with their role in the family and the community, farmers and industrial water users, managers, operational and maintenance personnel, educators, and other professionals.
Luis Santos Pereira, Ian Cordery, Iacovos Iacovides
Backmatter
Metadaten
Titel
Coping with Water Scarcity
verfasst von
Dr Luis Santos Pereira
Dr Ian Cordery
Dr Iacovos Iacovides
Copyright-Jahr
2009
Verlag
Springer Netherlands
Electronic ISBN
978-1-4020-9579-5
Print ISBN
978-1-4020-9578-8
DOI
https://doi.org/10.1007/978-1-4020-9579-5