Download or read book Les ailes du Sahel written by Le Zwarts and published by BRILL. This book was released on 2014-04-14 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Living on the Edge' examines the function of the Sahel region of Africa as an important wintering area for long-distance migrant birds. It describes the challenges the birds have to cope with – climate change, of course, and rapid man-made habitat changes related to deforestation, irrigation and reclamation of wetlands. How have all these changes affected the birds, and have birds adapted to these changes? Can we explain the changing numbers of breeding birds in Europe by changes in the Sahel, or vice versa? Winner of the BB/BTO Best Bird Book Award 2010 The Jury commented: "It is a tremendous book in every department. It marks a step-change in our knowledge of the ecology of this critically important region in the European-African migration system and of the many species (familiar to us on their breeding grounds) that winter there. The authors combine the latest scientific information with vivid descriptions of landscapes and animals. Their book is richly illustrated with large numbers of drawings, maps and photographs by acclaimed experts. The wealth of coloured graphics has been particularly well thought out and encourages readers to delve into the figures and learn more about the region, rather than having the (all-too-common) opposite effect. Summing up, the jury praises not just the high quality of the texts, the information and the illustrations, but also the sheer pleasure of reading the book: "One of the key attributes of a good book is to be able to grip the reader's attention and transport him or her to another place. We feel confident that [Living on the edge] will have that effect."

Download or read book Identification des principales zones prot g es transfontali res en Europe written by Robert Brunner and published by Council of Europe. This book was released on 2002-01-01 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'établissement du Réseau écologique paneuropéen représente un des objectifs majeurs de la Stratégie paneuropéenne de la diversité biologique et paysagère. La protection de zones transfrontalières dans le cadre d'un tel réseau écologique composé de groupes de zones protégées pourrait être une étape importante vers la protection du patrimoine naturel en Europe. La coopération transfrontalière offre la possibilité de créer des zones protégées plus vastes et d'harmoniser leur gestion, apportant ainsi une contribution très importante à la préservation de la biodiversité. Le présent rapport traite de la coopération transfrontalière dans les pays d'Europe centrale et orientale, y compris les pays en transition d'Europe orientale, dont la Russie, les pays Baltes, le Bélarus et l'Ukraine.

Download or read book Sharks Rays and Chimaeras written by Sarah L. Fowler and published by IUCN. This book was released on 2005 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Emergency Preparedness Digest written by and published by . This book was released on 1996 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Fluid Mechanics M chanique des Fluides Environnementaux written by CIGB ICOLD and published by CRC Press. This book was released on 2022-10-28 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dams are planned, constructed, and operated to meet human needs - generation of energy, irrigated agricultural production, flood control, public and industrial supply, supply of drinking water, and various other purposes. Dams impound water in reservoirs during times of high flood that can be used for human requirements during times with inadequate natural flows. Positive impacts of dams are improved flood control, improved welfare resulting from new access to irrigation and drinking water. Without dams there would be insufficient food to feed the world’s people and energy would be generated by burning fossil fuels that produce greenhouse gases. Despite this progress there remain significant concerns about the environmental impacts of dams. These environmental impacts are complex and far reaching, remote of the dam, and may occur in time with the dam construction or later and may lead to a loss of biodiversity and of productivity of natural resources. This bulletin compiles improvements in knowledge and state of the art technology to avoid or mitigate environmental impacts of dams on the natural ecosystem as well as to the people that depend upon them for their livelihood and also addresses the mitigation of environmental impacts on dams and reservoirs. Les barrages sont planifiés, construits et exploités de manière à répondre aux besoins humains. Les barrages retiennent l'eau dans les réservoirs pendant les périodes de forte crue, une eau qui peut être utilisée pour les besoins de l'homme pendant les périodes d’insuffisance des débits naturels. Les impacts positifs de barrages sont le contrôle des crues et l'amélioration du bien-être résultant du nouvel accès à l'irrigation et à l'eau potable. Sans barrages, la production alimentaire serait insuffisante pour nourrir la population du globe et l'énergie serait générée en brûlant des combustibles fossiles qui produisent des gaz à effet de serre. Malgré ces progrès, d'importantes préoccupations subsistent quant aux retombées des barrages sur l’environnement. Les impacts environnementaux sont complexes et d’une grande portée. Ils peuvent se produire au moment de la construction du barrage ou plus tard et peuvent entraîner une perte de la biodiversité et de la productivité des ressources naturelles. Le présent bulletin compile l'amélioration des connaissances et des technologies les plus récentes pour éviter ou atténuer les impacts environnementaux des barrages sur l'écosystème naturel ainsi que pour les personnes qui en dépendent pour leur subsistance. Il aborde également l'atténuation des impacts environnementaux sur les barrages et les réservoirs.

Download or read book Sedimentation and Sustainable Use of Reservoirs and River Systems S dimentation et Utilisation Durable des R servoirs et Syst mes Fluviaux written by ICOLD CIGB and published by CRC Press. This book was released on 2023-11-15 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: ICOLD Bulletin 147 discusses the upstream and downstream fluvial morphological impacts of reservoir sedimentation and possible mitigation measures. The current state of and possible future sediment deposition in reservoirs have been investigated globally with the aid of the ICOLD Register on Dams. The global mean reservoir sedimentation rate was found to be 0.8 % of the original storage capacity per year. The book also investigates the impacts of dams on the ecology related to fluvial morphological changes, and guidelines are proposed to mitigate the impacts on the downstream river morphology. Finally an economical model is presented which considers a life cycle approach for reservoir conservation. Ce CIGB Bulletin 147 traite des impacts morphologiques fluviaux en amont et en aval de la sédimentation des réservoirs et des mesures d'atténuation possibles. L'état actuel et l'avenir possible du dépôt de sédiments dans les réservoirs ont été étudiés à l'échelle mondiale à l'aide du registre des barrages de la CIGB. Le taux moyen mondial de sédimentation des réservoirs s'est avéré être de 0,8 % de la capacité de stockage initiale par an. Le livre étudie également les impacts des barrages sur l'écologie liés aux changements morphologiques fluviaux, et des directives sont proposées pour atténuer les impacts sur la morphologie des rivières en aval. Enfin, un modèle économique est présenté qui prend en compte une approche de cycle de vie pour la conservation des réservoirs.

Download or read book An Assessment of Natural Hazards and Disasters in Canada written by David Etkin and published by Springer Science & Business Media. This book was released on 2003-04-30 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The problems and issues of natural hazards and disasters, both globally and in Canada, are becoming increasingly important since the costs of extreme natural events have been escalating, and significant vulnerabilities exist in Canadian society. Without thoughtful and effective mitigation, these costs and human suffering are likely to continue to increase. An assessment of knowledge, research, and practice in risk, hazards and disasters fields is a fundamental step towards the goal of prevention and mitigation. This book on natural hazards and disasters in Canada is the first comprehensive interdisciplinary publication on this subject, and is the result of a national assessment on this topic. A variety of papers from the physical and social sciences explores both the risks associated with these hazards, and adaptive strategies that can be used to reduce those risks. Audience: This excellent collection of papers is intended for academics, professionals and practitioners involved in hazard reduction activities who wish to obtain a better understanding of Canadian natural hazards.

Download or read book Proceedings of the Workshop on Irrigation in West Africa written by Namara, Regassa E. and published by IWMI. This book was released on 2014-07-17 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Managing Wetlands in Arid Regions written by El Hadji M. Sene and published by IUCN. This book was released on 2006 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Rehabilitation of the Delta of the Senegal River in Mauritania written by Olivier Hamerlynck and published by IUCN. This book was released on 2003 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dams and Water Transfers An Overview Barrages et Transferts d Eau Aper u written by Cigb Icold and published by CRC Press. This book was released on 2021-08-09 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present Bulletin presents a complete response from the ‘Technical Committee of ICOLD on Dams and Water Transfer (CDWT)’ to the Terms of Reference. It starts with related global information, brings out related efforts made in countries with completely differing climate, economy, population distribution etc. about present status within and between river basins & countries – both surplus and or deficit, while recognizing the crucial role played by dams in water transfer to needy regions. It then enumerates guidelines followed in considering various options, while identifying geographical issues, limited by political territories & legal issues like water treaties. Essentially then, it dwells on possible need, potential and problems in water transfers that must be handled to overcome B/C issues faced by needy countries. In order to assist concerned professionals, the Bulletin finally elaborates on objections raised by different stake-holders in the subject and provides answers generated globally. The on-going debate world-over about WRD versus environmental impacts is then dealt with to help Member-countries overcome various issues. Le présent Bulletin présente une réponse complète du « Comité Technique sur les barrages et les transferts d’eau ». Il commence par des informations mondiales, fait ressortir les efforts déployés dans des pays au climat, à l'économie, à la répartition de la population, etc. complètement différents sur l'état actuel au sein et entre les bassins fluviaux et les pays - à la fois excédentaire et / ou déficitaire, tout en reconnaissant le rôle crucial joué par les barrages dans le transfert d'eau vers les régions nécessiteuses. Il énumère ensuite les lignes directrices suivies pour considérer diverses options, tout en identifiant les problèmes géographiques, limités par les territoires politiques et les questions juridiques comme les traités sur l'eau. Essentiellement, il s'attarde donc sur les besoins, le potentiel et les problèmes possibles des transferts d'eau qui doivent être traités pour surmonter les problèmes auxquels sont confrontés les pays dans le besoin. Afin d'aider les professionnels concernés, le Bulletin élabore enfin les objections soulevées par les différents acteurs du sujet et apporte des réponses générées globalement. Le débat en cours dans le monde entier par rapport aux impacts environnementaux est ensuite traité pour aider les pays membres à surmonter divers problèmes.

Download or read book Conference Sur la Conservation Et Le Suivi de la Diversite Biologique Et Paysagere en Ukraine written by Council of Europe. Conference and published by Council of Europe. This book was released on 2001-01-01 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Palaeoecology of Africa and the Surrounding Islands Volume 26 written by Heine Klaus and published by Routledge. This book was released on 2018-12-19 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers comprehensive and up-to-date information on research in many different disciplines which give an overall insight into the environmental history of Africa.

Download or read book Water for Peace Water supply technology written by and published by . This book was released on 1968 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Strategic Reassessment of Fish Farming Potential in Africa written by José Aguilar-Manjarrez and published by Food & Agriculture Org.. This book was released on 1998 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: "(Reprint. First published in 1998) The present study is an update of an earlier assessment of warm-water fish farming potential in Africa, by Kapetsky (1994). The objective of this study was to assess locations and areal expanses that have potential for warm-water and temperate-water fish farming in continental Africa. The study was based on previous estimates for Africa by the above author, and on estimates of potential for warm-water and temperate-water fish farming in Latin America by Kapetsky and Nath (1997). However, a number of refinements have been made. The most important refinement was that new data allowed a sevenfold increase in resolution over that used in the previous Africa study, and a twofold increase over that of Latin America (i.e. to 3 arc minutes, equivalent to 5 km x 5 km grids at the equator), making the present results more usable in order to assess fish farming potential at the national level. A geographical information system (GIS) was used to evaluate each grid cell on the basis of several land-quality factors important for fish-farm development and operation regardless of the fish species used. Protected areas, large inland water bodies and major cities were identified as constraint areas, and were excluded from any fish farming development altogether. Small-scale fish farming potential was assessed on the basis of four factors: water requirement from ponds due to evaporation and seepage, soil and terrain suitability for pond construction based on a variety of soil attributes and slopes, availability of livestock wastes and agricultural by-products as feed inputs based on manure and crop potential, and farm-gate sales as a function of population density. For commercial farming, an urban market potential criterion was added based on population size of urban centres and travel time proximity. Both small-scale and commercial models were developed by weighting the above factors using a multi-criteria decision-making procedure. A bioenergetics model was incorporated into the GIS to predict, for the first time, fish yields across Africa. A gridded water temperature data set was used as input to a bioenergetics model to predict number of crops per year for the following three species: Nile tilapia (Oreochromis niloticus), African catfish (Clarias gariepinus) and Common carp (Cyprinus carpio). Similar analytical approaches to those by Kapetsky and Nath (1997) were followed in the yield estimation. However, different specifications were used for small-scale and commercial farming scenarios in order to reflect the types of culture practices found in Africa. Moreover, the fish growth simulation model, documented in Kapetsky and Nath (1997), was refined to enable consideration of feed quality and high fish biomass in ponds. The small-scale and commercial models derived from the land-quality evaluation were combined with the yield potential of each grid cell for each of the three fish species to show the coincidence of each land-quality suitability class with a range of yield potentials. Finally, the land quality-fish yield potential combinations were put together to show where the fish farming potential coincided for the three fish species."

Download or read book Emergency Planning Digest written by and published by . This book was released on 1977 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flood Evaluation and Dam Safety written by CIGB ICOLD and published by CRC Press. This book was released on 2018-08-06 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydrology and dams are two fields that are obviously closely related. Four bulletins have so far been published by the Committee: Selection of Design Flood – Current methods, Dams and Floods – Guidelines and cases histories, Role of Dams in Flood Mitigation – A review and Integrated Flood Management. These bulletins have essentially addressed floods, the risks they represent and their significance for the concerned populations. The present Bulletin deviates slightly from this path, adopting a somewhat more technical perspective. The text consists of three chapters, conceived to be accessible to the practitioners.