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      Investing in water for food, ecosystems, and livelihoods: An overview of the comprehensive assessment of water management in agriculture

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      Agricultural Water Management

      Elsevier BV

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          Most cited references 15

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          Basic principles and ecological consequences of altered flow regimes for aquatic biodiversity.

          The flow regime is regarded by many aquatic ecologists to be the key driver of river and floodplain wetland ecosystems. We have focused this literature review around four key principles to highlight the important mechanisms that link hydrology and aquatic biodiversity and to illustrate the consequent impacts of altered flow regimes: Firstly, flow is a major determinant of physical habitat in streams, which in turn is a major determinant of biotic composition; Secondly, aquatic species have evolved life history strategies primarily in direct response to the natural flow regimes; Thirdly, maintenance of natural patterns of longitudinal and lateral connectivity is essential to the viability of populations of many riverine species; Finally, the invasion and success of exotic and introduced species in rivers is facilitated by the alteration of flow regimes. The impacts of flow change are manifest across broad taxonomic groups including riverine plants, invertebrates, and fish. Despite growing recognition of these relationships, ecologists still struggle to predict and quantify biotic responses to altered flow regimes. One obvious difficulty is the ability to distinguish the direct effects of modified flow regimes from impacts associated with land-use change that often accompanies water resource development. Currently, evidence about how rivers function in relation to flow regime and the flows that aquatic organisms need exists largely as a series of untested hypotheses. To overcome these problems, aquatic science needs to move quickly into a manipulative or experimental phase, preferably with the aims of restoration and measuring ecosystem response.
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            Threats to Imperiled Freshwater Fauna. Amenazas a la Fauna Dulceacuicola en Riesgo

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              Improving agricultural water productivity: Between optimism and caution

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                Author and article information

                Journal
                Agricultural Water Management
                Agricultural Water Management
                Elsevier BV
                03783774
                April 2010
                April 2010
                : 97
                : 4
                : 495-501
                Article
                10.1016/j.agwat.2009.08.015
                © 2010

                http://www.elsevier.com/tdm/userlicense/1.0/

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