Sustainable Solutions for Environmental Pollution, Volume 2. Группа авторов. Читать онлайн. Newlib. NEWLIB.NET

Автор: Группа авторов
Издательство: John Wiley & Sons Limited
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Жанр произведения: Биология
Год издания: 0
isbn: 9781119827641
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the managers of the operation and maintenance of the system set up. Staff training in maintenance and the establishment of a long-term monitoring protocol are therefore elements to be included in the project implementation process itself. If possible, a protocol for monitoring and evaluating the system should be set up, possible adjustments should be planned to adapt the system to local specificities from both a technical and a socio-economic point of view. It is prudent to anticipate the various factors that could interfere with the proper functioning of the system (e.g., implementation of regulations for any nearby construction site).

      The installation of explanatory panels in the vicinity of the site would promote the sharing of knowledge, the explanation of issues, and benefits and links with society. It is a question of making people understand the technical and biological functioning of the device, but also the issues around the water resource, and the interest of NBSs, and how every citizen can participate in improving trial in practice changes.

      1.15.2 South Africa Case Study

      It is therefore important that stakeholders understand the necessity of an integrated and tactical tailor-made approach in order to achieve benefits deriving from NBSs. Legislative provision for such an integrated approach to water management is implemented in South Africa. The country’s water legislation (i.e., National Water Act, Act 36 of 1998) provides for the protection of water resources through three main measures, namely:

      1 Classification of water resources;

      2 Determination of the reserve;

      3 Setting of Resource Quality Objectives (RQOs) for the selected class.

      Water classification scenarios are assessed in terms of their economic, social, and ecological implications. The scenarios, in effect, offer different pathways into the future, each representing a different trade-off between water-resource development and use, and protection of the resource. After public consultation, it is the government’s responsibility to decide on what that future will be. This iterative process should ultimately result in a countrywide coverage of catchment management plans, informed by stakeholders’ socio-economic needs and water use requirements. Finally, adaptive management is then considered whereby ongoing management and continuous improvement of the process is achieved through monitoring, evaluation, and enforcement.

Schematic illustration of South African National Water Department’s approach to integrated water resource management.

      Ecohydrology is an interdisciplinary science focused on the study and elucidation of feedbacks between water and associated energies fluxes (mainly nutrients and temperature), and aquatic and terrestrial biocenoses (Westman, 1977), their societal roles (Diaz et al., 2006), and the anthropogenic threat to their sustainability [Millenium Ecosystem Assessment (UN, 2005)]. It is in this context that ecohydrology was born as an interdisciplinary science [http://ecohydrology-ihp.org/demosites/] (Zalewski et al., 1997) and conceived as an interdisciplinary science based on the management principle of “dual regulation”, postulating “any action on the flux influences the biota, and any action on the biota influences the fluxes”. Human activities impact both (fluxes and biota), by modifying on the one hand the qualities and quantities of water fluxes and associated substances and, on the other hand, by modifying terrestrial and aquatic biocenoses through agricultural activities and land use, urbanization, and soil sealing, hydraulic developments on water bodies.

      1.16.1 Three Nested Logics for Innovative NBS Implementation

Schematic illustration of logical nesting between levers.

      The model provides a framework for the integration of knowledge and the design of strategies and equipment conceived to mitigate anthropogenic pressure on the water resource and preserve ecosystems in highly modified environments.

      It has been integrated in the framework of eco-hydrology to give an operational model allowing action (identification of societal levers of action on the ecosystem). Figure 1.13 also illustrates the double regulation of the ecological state of a hydrosystem, linking our three structuring logics to the two modes of action of society: 1) regulation and measures; and 2) management and actions on the ecosystem, via technologies or methodologies acting on morphology, flows, and/or biocoenosis. The interaction of these three logics leads to the formation of hot spots and hot moments, which need to be located and quantified.

Filter effects Three action levels
Forms Fluxes Processes

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