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Author : Anonim
Publisher : Unknown
Page : 144 pages
File Size : 53,8 Mb
Release : 1984
Category : Agriculture
ISBN : UCAL:B3768126
Author : National Agricultural Library (U.S.)
Publisher : Unknown
Page : 1338 pages
File Size : 43,8 Mb
Release : 1974
Category : Electronic
ISBN : STANFORD:36105130624112
Author : Krystyna M. Urbanska,Nigel R. Webb,Peter J. Edwards
Publisher : Cambridge University Press
Page : 422 pages
File Size : 55,8 Mb
Release : 1997
Category : Business & Economics
ISBN : 052159989X
Details the scientific basis for the reconstruction of damaged ecosystems.
Author : R.B. Land,D.W. Robinson
Publisher : Elsevier
Page : 440 pages
File Size : 50,8 Mb
Release : 2013-10-22
Category : Technology & Engineering
ISBN : 9781483161730
Genetics of Reproduction in Sheep is a compilation of papers that are concerned with the study and application of genetics to the reproduction in sheep. The book is divided into six parts, grouping the papers according to topic. The main topics include genetic variation and selection; the inheritance and the effects of the Booroola gene; genetic strategies for single genes; physiology of genetic variation; the physiological criteria of genetic merit; and the national requirement and systems of husbandry. The text is recommended for those involved with raising sheep and plan to apply genetics in their reproduction, as well as for geneticists who wish to conduct studies on how their field is applied to sheep reproduction.
Author : M.L. Parry,T.R. Carter,N.T. Konijn
Publisher : Springer Science & Business Media
Page : 848 pages
File Size : 42,7 Mb
Release : 2013-11-27
Category : Science
ISBN : 9789400929432
Three important studies were initiated in the 1970s to investigate the relation ship between climatic variations and agriculture: by the National Delcnse University (1980) on Crop Yields and Climate Change to the Year 2000, by the U.s. Department of Transportation (1975) on Impacts of Climatic Change on the Biosphere and by the U.S. Department of Energy (1980) on Environmental and Societal Consequences of a Possible CO -Induced Climatic Change (the ClAP 2 study). These were pioneering projects in a young field. Their emphasis was on measuring likely impacts of climatic variations rather than on evaluating possible responses, and they focused on first-order impacts (e.g., on crop yields) rather than on higher-order effects on society. A logical next step was to look at higher-order effects and potential responses, as part of a more integrated approach to impact assessment. This was undertaken by the World Climate Impact Program (WCIP), which is directed by the United Nations Environment Program (UNEP). The WCIP is one of four aspects of the World Climate Program that was initiated in 1979. At a meeting in 1982, the Scientific Advisory Committee of WCIP accepted, in broad terms, a proposal from the International Institute for Applied Systems Analysis (IIASA) for an integrated climate impact assessment, with the proviso that the emphasis be on impacts in the agricultural sector. Martin Parry was asked to design and direct the project at IIASA. Funding was provided by UNEP, IIASA, the Austrian Government and the United Nations University.
Author : National Agricultural Library (U.S.)
Publisher : Unknown
Page : 1392 pages
File Size : 54,5 Mb
Release : 1976
Category : Agriculture
ISBN : UOM:39015070533099
Author : Anonim
Publisher : Nordic Council of Ministers
Page : 106 pages
File Size : 54,6 Mb
Release : 1994
Category : Feeds
ISBN : 9291204234
Author : National Agricultural Library (U.S.)
Publisher : Unknown
Page : 372 pages
File Size : 44,7 Mb
Release : 1978
Category : Agriculture
ISBN : CORNELL:31924052304296
Author : A.J. Conacher
Publisher : Springer Science & Business Media
Page : 386 pages
File Size : 41,6 Mb
Release : 2013-12-11
Category : Science
ISBN : 9789401720335
This book contains selected contributions from the Sixth Meeting of the International Geographical Union's Commission on Land Degradation and Desertification, held in Perth, Australia, in September 1999. Collectively, these contributions explicitly seek to understand not only the mechanisms responsible for the problem of land degradation but their social and economic implications, the means of overcoming the problems, and the policy instruments whereby remedial measures may be implemented. This breadth of approach is both distinctive and essential if the problems are to be tackled effectively. The authorship comprises of specialists (mostly geographers) from universities, research organizations, and government agencies, who provide a truly international perspective with contributions from Iceland to Australia and from the USA to Japan. Audience: The book presents current research findings which will be of particular benefit to professionals and practitioners, as well as researchers and tertiary-level educationalists who are involved with land degradation.
Author : Leland G. Alkire,Cheryl Westerman-Alkire
Publisher : Gale Cengage
Page : 1738 pages
File Size : 40,7 Mb
Release : 2006
Category : Periodicals
ISBN : UCSC:32106018187093
Volume 2 is arranged alphabetically by periodical title, rather than by abbreviation.
Author : United States. Department of Agriculture
Publisher : Unknown
Page : 880 pages
File Size : 42,8 Mb
Release : 1913
Category : Agriculture
ISBN : SRLF:A0009789173
Author : United States. Dept. Of Agriculture
Publisher : Hardpress Publishing
Page : 656 pages
File Size : 54,8 Mb
Release : 2013-12
Category : Electronic
ISBN : 1314697676
Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Author : Peter P. Calow,Geoffrey E. Petts
Publisher : John Wiley & Sons
Page : 536 pages
File Size : 41,8 Mb
Release : 2009-07-08
Category : Technology & Engineering
ISBN : 9781444313864
Fast changing legislation and increasing environmental awarenesswithin the non-scientific community demands that the modernapproach to the management of rivers and water resources should bebased on a sound understanding and application of the scientificand ecological principles that underlie freshwater processes. Intwo volumes, The Rivers Handbook offers an expert andexhaustive insight into the principles, methods and tools of modernriver management - always within an integrated and environmentallyacceptable framework. This second volume develops the principlesand philosophies expounded in the first volume into the managementsphere, organizing the approach around problems, diagnosis andtreatment. A fully comprehensive reference to sound methods of modernriver management. The ideal information resource for all river managers.
Author : D. Mills,David Piggins
Publisher : Springer Science & Business Media
Page : 604 pages
File Size : 41,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400912359
At present fishing for salmon in Norwegian home water is carried out with drift nets, bag nets, bend nets, lift nets and stake nets in the sea, and mainly by rods in the rivers. Catch statistics have been collected since 1876, but reliability of the statistics is questionable. The rates of exploitation on many Norwegian salmon stocks are very high, and data are presented and discussed for River Laerdal, River Eira and River Imsa stocks. As a result of this heavy exploitation with nets, the frequency of net-marked salmon entering rivers is high especially for griIse, although most net-marked salmon are only slightly damaged. It is suggested that mortality of salmon that are net-damaged hear or in brackish water is relatively small compared with salmon that escape from nets on the high seas. Some possible effects of selective fishing are also discussed. 159 Status of Exploitation of Atlantic Salmon in Norway REFERENCES Anon. (l985a) Salmon and sea trout fisheries 1984. Central Bureau of Statistics of Norway, Oslo - Kongsvinger, 96 pp. (in Norwegian with English summary) Anon. (I985b) Report of meeting of working group on North Atlantic salmon. ICES C. M. 1985/ Assess, 11, 67 pp. Angelsen, K. K. and Holm, M. (I978) Rapport om garnforslllk med laks, Fisk og Fiskestell, . ; 15-17. (in Norwegian) Berg, M. , Abrahamsen, B. and Berg, O. K. (I986) Spawning of injured compared to uninjured female Atlantic salmon, Salmo salar L. Aquaculture and Fisheries Management, l.
Author : Olafur Arnalds
Publisher : Springer
Page : 183 pages
File Size : 50,7 Mb
Release : 2015-01-06
Category : Nature
ISBN : 9789401796217
In this new volume in the World Soil series, the various types of Icelandic soils, their different characteristics, their formation, degradation and erosion are reviewed. At the same time, the book also deals with the agriculture and land use in general to give a complete view of Icelandic soils. The first part details the natural parameters such as the climate and the geography of Iceland. It also explains Icelandic geology, which is the major parameter controlling the soil formation in this country. The author describes the formation of Iceland, the main volcanic systems, central volcanoes, tephra production and its influence on the soils. Explanations on rocks, glaciers, rivers and other main geologic features are also given. The book continues with a description of the Icelandic geomorphology, giving insights on the main surface types, frost, cryoturbation and other cryogenic features. Then it details the different types of soils, their formation and main features, comparing the Icelandic soils to other soils elsewhere in the world. Erosion and land degradation are then reviewed, including the exceptionally active wind erosion and dust production. Finally, it gives an insight on land use, agriculture and vegetation types. All this accompanied by the most amazing photos to illustrate the great diversity of Icelandic Soil.