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River systems as providers of goods and services: A basis for comparing desired and undesired effects of large dam projects
Linköping University, Faculty of Arts and Sciences. Linköping University, The Tema Institute.
2002 (English)In: Environmental Management, ISSN 0364-152X, E-ISSN 1432-1009, Vol. 29, no 5, 598-609 p.Article in journal (Refereed) Published
Abstract [en]

In developing countries, large dam projects continue to be launched, primarily to secure a time-stable freshwater supply and to generate hydropower. Meanwhile, calls for environmentally sustainable development put pressure on the dam-building industry to integrate ecological concerns in project planning and decision-making. Such integration requires environmental impact statements (EISs) that can communicate the societal implications of the ecological effects in terms that are understandable and useful to planners and decision-makers. The purpose of this study is to develop a basic framework for assessing the societal implications of the river ecological effects expected of a proposed large dam project. The aim is to facilitate a comparison of desired and potential undesired effects on-site and downstream. The study involves two main tasks: to identify key river goods and services that a river system may provide, and to analyze how the implementation of a large dam project may alter the on-site capacity and downstream potentials to derive river goods and services from the river system. Three river goods and six river services are identified. River goods are defined as extractable partly man-made products and river services as naturally sustained processes. By four main types of flow manipulations, a large dam project improves the on-site capacity to derive desired river goods, but simultaneously threatens the provision of desirable river goods and services downstream. However, by adjusting the site, design, and operational schedule of the proposed dam project, undesirable effects on river goods and services can be minimized.

Place, publisher, year, edition, pages
2002. Vol. 29, no 5, 598-609 p.
National Category
Social Sciences Interdisciplinary
Identifiers
URN: urn:nbn:se:liu:diva-32423DOI: 10.1007/s00267-001-0058-3Local ID: 18324OAI: oai:DiVA.org:liu-32423DiVA: diva2:253245
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2017-12-13
In thesis
1. Environmental considerations in the planning of large dam projects: a study on Environmental Impact Statements and the Southeastern Anatolia Project
Open this publication in new window or tab >>Environmental considerations in the planning of large dam projects: a study on Environmental Impact Statements and the Southeastern Anatolia Project
2003 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Large dam projects have played a key role in supporting societal development in the past and continue to be launched, primarily in developing countries. However, large dam projects also cause extensive environmental impacts in the river system, which may reduce the river system's capacity to provide goods, services, and other values apart from those generated by the project. The Environmental Impact Statement (ElS) has become a key instrument for enabling prevention, minimization, and mitigation of significant adverse environmental effects of major projects in early planning. The potential of EISs to support compromise building between conflicting interests is also increasingly recognized. In reality, the great potentials of the ElS are rarely fully utilized, which motivate further improvements.

This thesis has three main objectives, Le. (i) to examine the motives behind large dam projects, their impact on project planning, and some constraints for full project realization, (ii) to identify shortcomings in EISs and other project-related reports regarding the extent to and manner in which potential environmental effects of large dam projects are attended to, and (iii) to suggest measures for how to improve the capacity of EISs to support impact minimization and compromise building in project plarming and decision-making.

Based on a case study on the Southeastern Anatolia Project (GAP) in southeast Turkey, it was found that the objectives and planning of large dam projects can change significantly over time, in response to changes in the underlying ambitions and motives for development. While changes to the design may increase the dam's technical capacity to store water and generate hydropower, the actual potential to utilize its installed capacities during recurrent droughts may be limited. An increased scale and number ofdam project objectives may also lead to increased competition over the river water. Full realization of dam project objectives may be hampered by the climate and by growing water demands of competing uses. Moreover, an analysis of GAP-related reports revealed imbalances in the total degree of attention given to individual environmental problems, different categories of environmental problems, and to environmental problems of dam projects and irrigation schemes, respectively, as weIl as shifts in the focus of attention over time from early plarming to implementation. The fmdings suggest that project-related reports tend to focus on problematic environmental conditions that motivate project implementation, and on potential environmental effects that may undermine project productivity, viability, or longevity, particularly in planning and early implementation. In contrast, those potential environmental effects with no apparent bearing on the financial or operational success of the project tend to be largely neglected unless strong incentives are created.

The analysis ofEISs of large dam projects revealed shortcomings in the attention given to root causes and impact pathways involved in the generation of higher-order environmental effects and cumulative impacts. Important imbalances were also found in the degree of attention given to different types of environmental effects. In order to improve the capacity of EISs to explain how higher-order effects and cumulative impacts may arise, network analysis and cause-effect diagrams should be increasingly adopted. This thesis also proposes a conceptual framework to facilitate a comparison of desired and undesired effects, based on the view of a river system as a provider of goods and services, which enables the translation of ecological effects into their societal and economic implications.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2003. 76 p.
Series
Linköping Studies in Arts and Science, ISSN 0282-9800 ; 272
Keyword
Atatürk Dam. EIA, ecosystem services, environmental impact, Euphrates River, GAP, hydropower, river system, sustainable development, Tigris River, Turkey, Dammar, Miljöaspekter, Tigris, Turkiet
National Category
Social Sciences Interdisciplinary
Identifiers
urn:nbn:se:liu:diva-29569 (URN)14944 (Local ID)91-7373-649-X (ISBN)14944 (Archive number)14944 (OAI)
Public defence
2003-05-22, Elysion, Hus T, Campus Valla, Linköpings universitet, Linköping, 10:00 (English)
Supervisors
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2014-09-01Bibliographically approved

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Brismar, Anna

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