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Reponse Des Processus Biochimiques Dune Tourbiere Soumise A Des Fluctuations Du Niveau Deau
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Book Synopsis Réponse des processus biochimiques d'une tourbière soumise à des fluctuations du niveau d'eau by : Jo De Ridder
Download or read book Réponse des processus biochimiques d'une tourbière soumise à des fluctuations du niveau d'eau written by Jo De Ridder and published by . This book was released on 2012 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wetlands are recognized to play an important role in regulating global biogeochemical cycles. Actually they serve as sinks, sources and transformers of nutrients. They are very sensitive to changes in hydrology that may be brought about by climate or anthropogenic pressures. Negative impacts affect both the physical structure of the peat and the water quality. The work presented here applies an interdisciplinary approach by combining hydrology, geophysics, hydrochemistry, biology and numerical modelisation. The investigated site is a peatland meadow located in Normandy, NW France. Are presented : 1) a hydrological study including the impact of increasing water extraction in the underlying aquifer and climate change 2) the involved biochemical processes in the peatland, in response to repeated wettings and drainings 3) how these processes are altered by environmental changes (desiccation and water quality recharge). A first approach by groundwater dating, combined to chemical characterization, enabled to gain knowledge on the aquifer conceptual functioning. The mean water residence time is of about 55 years and aquifer vulnerability to pollution is evidenced. Finally, the modelisation highlights the interactions between the wetland and the aquifer and predicts an important impact of groundwater extraction and climate change on the wetland water levels that may lead to desiccation and on the stream flows. The study confirms that peat biochemical vulnerability is highly dependant on the peat quality. A more degraded peat, i.e. with lower nutrient and biomass content, is more sensitive to oxidation processes, which results in important acidification and sulphate and cations leaching. Desiccation increases these processes and is clearly destructive. The results confirm that, while anaerobic conditions must be favoured in peatland management, regular small water table fluctuations do not disturb the peat functioning, as a nutrient transformer.
Book Synopsis Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit by : Stuart Hill
Download or read book Basic Technics in Ecological Farming / Techniques de Base en Agriculture Biologique / Grundsätzliche Verfahren der ökologischen Landwirtschaft / Le Maintien de la Fertilité des Sols / The Maintenance of Soil Fertility / Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book El Niño written by Bruno Voituriez and published by UNESCO. This book was released on 2000 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: El Nino, caprice of the heavens, scapegoat for every calamity? The general public cannot really understand what is behind the El Nino phenomenon. The book offers a tour of the Earth's climate to understand one of its normal but extreme components.
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9789251055212 Total Pages :116 pages Book Rating :4.0/5 (552 download)
Book Synopsis Guidelines for Soil Description by : Food and Agriculture Organization of the United Nations
Download or read book Guidelines for Soil Description written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2006 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils are affected by human activities, such as industrial, municipal and agriculture, that often result in soil degradation and loss. In order to prevent soil degradation and to rehabilitate the potentials of degraded soils, reliable soil data are the most important prerequisites for the design of appropriate land-use systems and soil management practices as well as for a better understanding of the environment. The availability of reliable information on soil morphology and other characteristics obtained through examination and description of the soil in the field is essential, and the use of a common language is of prime importance. These guidelines, based on the latest internationally accepted systems and classifications, provide a complete procedure for soil description and for collecting field data. To help beginners, some explanatory notes are included as well as keys based on simple test and observations.--Publisher's description.
Book Synopsis Glossary of Soil Science Terms 2008 by : Soil Science Society of America
Download or read book Glossary of Soil Science Terms 2008 written by Soil Science Society of America and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than 1800 terms are included in this revised glossary. Subject matter includes soil physics, soil chemistry, soil biology and biochemistry, pedology, soil and water management and conservation, forest and range soils, nutrient management and soil and plant analysis, mineralogy, wetland soils, and soils and environmental quality. Two appendices on tabular information and designations for soil horizons and layers also are included.
Book Synopsis Shipping and Globalization in the Post-War Era by : Niels P. Petersson
Download or read book Shipping and Globalization in the Post-War Era written by Niels P. Petersson and published by Springer Nature. This book was released on 2019-11-21 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book belongs to the Maritime Business and Economic History strand of the Palgrave Studies in Maritime Economics book series. This volume highlights the contribution of the shipping industry to the transformations in business and society of the postwar era. Shipping was both an example and an engine of globalization and structural change. In turn, the industry experienced and pioneered, mirrored and enabled key developments that led to the present-day globalized economy. Contributions address issues such as the macro-level shift of shipping’s centre of gravity from Europe to Asia, the political and legal frameworks within which it developed, the strategies and performance of both successful and unsuccessful firms, and the links between the shipping industry and the wider economy and society. Without shipping and its ability to forge connections and networks of a global reach, the modern world would look very different. By bringing together scholars from various disciplinary and national backgrounds, this book advances our understanding of the linkages that bind economies and societies together.
Book Synopsis Agrochimica by : International Atomic Energy Agency
Download or read book Agrochimica written by International Atomic Energy Agency and published by . This book was released on 1977 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic matter and soil productivity; Turnover of plant residues; Mineralization of organic compounds; Dynamics of organic forms of nitrogen; Nitrogen economy; Biodegradation of organic matter; Biochemical transformation of organic matter; Bitumens in soil organic matter; Characterization of humic acids; Carbon dating; Modern techniques and their implact on soil organic matter research; Sludge; Soil organic matter components and plant metabolism; Interaction between agrochemicals and organic matter; Peat.
Book Synopsis Cassava-Mealybug Interactions by : Paul-André Calatayud
Download or read book Cassava-Mealybug Interactions written by Paul-André Calatayud and published by IRD Editions. This book was released on 2006 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most basic information on plant-mealybug interactions during the last decade has come from research on the cassava Manihot esculenta Crantz (Euphorbiaceae) system with two mealybug species, namely Phenacoccus manihoti Matile-Ferrero and Phenacoccus herreni Cox and Williams (Sternorrhyncha: Pseudococcidae). Both these insects cause severe damage to cassava in Africa and South America, respectively. This book reviews these interactions (plant selection by the insects, nutritional requirements
Book Synopsis Sap-sugar Content of Grafted Sugar Maple Trees by : Maurice E. Demeritt
Download or read book Sap-sugar Content of Grafted Sugar Maple Trees written by Maurice E. Demeritt and published by . This book was released on 1985 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Remediation Case Studies written by and published by . This book was released on 1995 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Crying Out for Change by : Deepa Narayan-Parker
Download or read book Crying Out for Change written by Deepa Narayan-Parker and published by World Bank Publications. This book was released on 2000 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: A multi-country research initiative to understand poverty from the eyes of the poor, the Voices of the Poor project was undertaken to inform the World Bank's activities and the upcoming World Development Report 2000/01. The research findings are being published in three books: "Can Anyone Hear Us?" gathers the voices of over 40,000 poor women and men in 50 countries from the World Bank's participatory poverty assessments (Deepa Narayan, Raj Patel, Kai Schafft, Anne Rademacher, and Sarah Koch-Schulte, authors). "Crying Out for Change" pulls together new field work conducted in 1999 in 23 countries (Deepa Narayan, Robert Chambers, Meera Shah, and Patti Petesch, authors). "From Many Lands" offers regional patterns and country case-studies (Deepa Narayan and Patti Petesch, editors). Voices of the Poor marks the first time such an exercise has been undertaken in so many developing countries and transition economies around the world. It provides a unique and detailed picture of the life of the poor and explains the constraints poor people face to escape from poverty in a way that more traditional survey techniques do not capture well. Each of the three volumes demonstrates the importance of voice and power in poor people's definition of poverty. Voices of the Poor concludes that we need to expand our conventional views of poverty which focus on income expenditure, education, and health to include measures of voice and empowerment.
Book Synopsis Mini-tapping Sugar Maples for Sap-sugar Testing by : William J. Gabriel
Download or read book Mini-tapping Sugar Maples for Sap-sugar Testing written by William J. Gabriel and published by . This book was released on 1982 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of watering and fertilization on carbohydrate reserves in sugar maple seedlings by : Clayton M. Carl
Download or read book Effects of watering and fertilization on carbohydrate reserves in sugar maple seedlings written by Clayton M. Carl and published by . This book was released on 1978 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Europe and the Maritime World by : Michael B. Miller
Download or read book Europe and the Maritime World written by Michael B. Miller and published by Cambridge University Press. This book was released on 2012-08-20 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Europe and the Maritime World: A Twentieth-Century History offers a framework for understanding globalization over the past century. Through a detailed analysis of ports, shipping and trading companies whose networks spanned the world, Michael B. Miller shows how a European maritime infrastructure made modern production and consumer societies possible. He argues that the combination of overseas connections and close ties to home ports contributed to globalization. Miller also explains how the ability to manage merchant shipping's complex logistics was central to the outcome of both world wars. He chronicles transformations in hierarchies, culture, identities and port city space, all of which produced a new and different maritime world by the end of the century.
Book Synopsis Shoot Size Significantly Affects Rooting Response of Sugar Maple Softwood Cuttings by : John R. Donnelly
Download or read book Shoot Size Significantly Affects Rooting Response of Sugar Maple Softwood Cuttings written by John R. Donnelly and published by . This book was released on 1974 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modern Surface Organometallic Chemistry by : Jean-Marie Basset
Download or read book Modern Surface Organometallic Chemistry written by Jean-Marie Basset and published by John Wiley & Sons. This book was released on 2009-07-10 with total page 725 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering everything from the basics to recent applications, this monograph represents an advanced overview of the field. Edited by internationally acclaimed experts respected throughout the community, the book is clearly divided into sections on fundamental and applied surface organometallic chemistry. Backed by numerous examples from the recent literature, this is a key reference for all chemists.
Download or read book Olive Growing written by and published by . This book was released on 2010 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:
