Restoration and Management of Lakes and Reservoirs, Cooke, G. Dennis
Автор: Bengtsson, Lars, Herschy, Reginald W., Fairbridge, Rhodes W. (Eds.) Название: Encyclopedia of Lakes and Reservoirs ISBN: 1402056168 ISBN-13(EAN): 9781402056161 Издательство: Springer Рейтинг: Цена: 371750.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: The world’s growing population faces the challenge of meeting ever-larger demands for fresh water, not only for drinking but also for agriculture, industry and recreation. Already some one billion people are at risk from over-use, water withdrawals and pollution of these water bodies So scientific knowledge of the lakes and reservoirs, which hold about 90% of the world's surface fresh water, is increasingly critical to meeting the multiplicity of needs.The Encyclopedia of Lakes and Reservoirs offers a comprehensive and authoritative review of physical, chemical and ecological characteristics of lakes and reservoirs, as well as describing their uses and environmental conditions and trends in all parts of the world. More than 165 scientists from over 30 countries have contributed in both large and small ways to this authoritative volume. Superbly illustrated throughout, it includes some 200 entries in a wide range of topics, including acidification, artificialisation, biology, canals, climate change effects, chemicals, dams, dew ponds, drainage, ecological, eutrophication, evaporation, fisheries, geographical, geological, hydrological, hydro-electric power, nutrients, organic pollution, paleolimnology, reservoir capacities and depths, sedimentation, water resources. These include many of the most current and most controversial environmental problems.
Автор: Marc Marcotte; Roger Schetagne; Normand Therien; C Название: Mercury in the Biogeochemical Cycle ISBN: 3642642829 ISBN-13(EAN): 9783642642821 Издательство: Springer Рейтинг: Цена: 121110.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: Nowadays, major environmental issues are the object of large public debates de- spite the fact that scientific knowledge is often insufficient to draw unequivocal conclusions. Such is the case in the ongoing debate regarding the specific contri- butions of anthropogenic greenhouse gas emissions and of natural climate changes to global warming. At least 10 to 20 years of additional observations will be re- quired, before we will be able to conclude, with certainty, on this subject. In the mean time, and as directed by their immediate interests, people will continue to promote contradictory opinions. The media are, in part, responsible for perpetuat- ing such debates in that they convey indiscriminately the opinion of highly credi- ble scientists as that of dogmatic researchers, the latter, unfortunately too often expressing working hypotheses as established facts. Naturally, in a similarly mis- informed manner, pressure groups tend to support the researcher whose opinions most closely represent either their particular ideological battles or their economic interests and, hence, in their own way, add further to the confusion and obscurity of the debate. Only a few years ago, mercury (Hg)contamination in hydroelectric reservoirs was the object of such media and social biases. At the time, analytical data used to support the discourse were themselves uncertain and numerous hypotheses, often times fanciful, were proposed and hastily "delivered" to the public.
Water demand in southern Africa continues to rise, as urban areas expand and as agricultural water demand rises to meet the millennium development food security goals. Water resource availability in the northern Limpopo Basin has declined over the last 30 years, and will decline further under climate change. In this study, water resources modelling is used to quantify the effect of water resources strategies and climatic conditions on water resources availability. This is coupled with water balance modelling to evaluate the potential of alluvial aquifers, which form the beds of sand rivers.
The greatest benefit for the least impact comes from strategies providing for better land and soil/water management, such as changing from maize to small grains, production of livestock fodder and conservation agriculture. Small dams are a key resource to rural communities, and change to Multiple Use Systems through abstraction of water for irrigation has clear benefits locally. There is also great potential for the exploitation of alluvial aquifers for water supply. Better management of existing large dams, together with conjunctive use of alluvial groundwater and several reservoirs could increase productive use of water and significantly improve livelihoods without the construction of new reservoirs.
Автор: Shen Zhenyao, Niu Junfeng, Wang Xiying Название: Distribution and Transformation of Nutrients in Large-Scale Lakes and Reservoirs: The Three Gorges Reservoir ISBN: 3642349633 ISBN-13(EAN): 9783642349638 Издательство: Springer Рейтинг: Цена: 93160.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: "Distribution and Transformation of Nutrients and Eutrophication in Large-scale Lakes and Reservoirs: The Three Gorges Reservoir" presents key findings on early eutrophication in large-scale lakes and reservoirs, providing readers with an overview of lake management problems and the tools that can be applied to solve them.
Автор: Marcelo Juanico; Inka Dor Название: Hypertrophic Reservoirs for Wastewater Storage and Reuse ISBN: 3642642624 ISBN-13(EAN): 9783642642623 Издательство: Springer Рейтинг: Цена: 111790.00 T Наличие на складе: Есть у поставщика Поставка под заказ. Описание: Reservoirs for Wastewater Storage and Reuse is a compendium of available information on this emergent technology, from the role that wastewater reservoirs can play within general water resources management and wastewater reuse policy, to the design and operation of the units, including removal efficiencies for different pollutants.
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