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Author : Dennis Arthur Lonergan
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (89 download)
Download or read book Biological Nitrogen Fixation in Marshes written by Dennis Arthur Lonergan and published by . This book was released on 1975 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maria Eugenie Casselman
Publisher :
ISBN 13 :
Total Pages : 164 pages
Book Rating : 4.:/5 (543 download)
Download or read book Biological Nitrogen Fixation in a Louisiana Spartina Alterniflora Salt Marsh written by Maria Eugenie Casselman and published by . This book was released on 1979 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract.
Author : N. S. Subba Rao
Publisher : Cambridge University Press
ISBN 13 : 9780521417532
Total Pages : 376 pages
Book Rating : 4.4/5 (175 download)
Download or read book Current Developments in Biological Nitrogen Fixation written by N. S. Subba Rao and published by Cambridge University Press. This book was released on 1984 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume discusses the most recent advances in biological nitrogen fixation, with chapters written by experts on the ecology, physiology, biochemistry and genetics of biological nitrogen fixation.
Author : J.K. Ladha
Publisher : Springer Science & Business Media
ISBN 13 : 9401709106
Total Pages : 212 pages
Book Rating : 4.4/5 (17 download)
Download or read book Biological Nitrogen Fixation for Sustainable Agriculture written by J.K. Ladha and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical fertilizers have had a significant impact on food production in the recent past, and are today an indispensable part of modern agriculture. On the other hand, the oil crisis of the 1970s and the current Middle East problems are constant reminders of the vulnerability of our fossil fuel dependent agriculture. There are vast areas of the developing world where N fertilizers are neither available nor affordable and, in most of these countries, balance of payment problems have resulted in the removal of N fertilizer subsidies. The external costs of environmental degradation and human health far exceed economic concerns. Input efficiency of N fertilizer is one of the lowest and, in turn, contributes substantially to environmental pollution. Nitrate in ground and surface waters and the threat to the stability of the ozone layer from gaseous oxides of nitrogen are major health and environmental concerns. The removal of large quantities of crop produce from the land also depletes soil of its native N reserves. Another concern is the decline in crop yields under continuous use of N fertilizers. These economic, environmental and production considerations dictate that biological alternatives which can augment, and in some cases replace, N fertilizers must be exploited. Long-term sustainability of agricultural systems must rely on the use and effective management of internal resources. The process of biological nitrogen fixation offers and economically attractive and ecologically sound means of reducing external nitrogen input and improving the quality and quantity of internal resources. In this book, we outline sustainability issues that dictate an increased use of biological nitrogen fixation and the constraints on its optimal use in agriculture.
Author : J.K. Ladha
Publisher : Int. Rice Res. Inst.
ISBN 13 : 0792317742
Total Pages : 224 pages
Book Rating : 4.7/5 (923 download)
Download or read book Biological Nitrogen Fixation for Sustainable Agriculture written by J.K. Ladha and published by Int. Rice Res. Inst.. This book was released on 1992-05-31 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extended Versions of Papers Presented in the Symposium `Role of Biological Nitrogen Fixation in Sustainable Agriculture' at the 13th Congress of Soil Science, Kyoto, Japan, 1990
Author : Frances Margaret Green
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (124 download)
Download or read book Nitrogen fixation in salt marshes of the northern gulf coast of Florida written by Frances Margaret Green and published by . This book was released on 1973 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alyce Diane Thomson
Publisher :
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.:/5 (374 download)
Download or read book Nitrogen Fixation in Virginia Salt Marshes and the Effects of Chronic Oil Pollution on Nitrogen Fixation in the Mobjack Bay Marshes written by Alyce Diane Thomson and published by . This book was released on 1977 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P. Graham
Publisher : Springer Science & Business Media
ISBN 13 : 9401110883
Total Pages : 206 pages
Book Rating : 4.4/5 (11 download)
Download or read book Symbiotic Nitrogen Fixation written by P. Graham and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past three decades there has been a large amount of research on biological nitrogen fixation, in part stimulated by increasing world prices of nitrogen-containing fertilizers and environmental concerns. In the last several years, research on plant--microbe interactions, and symbiotic and asymbiotic nitrogen fixation has become truly interdisciplinary in nature, stimulated to some degree by the use of modern genetic techniques. These methodologies have allowed us to make detailed analyses of plant and bacterial genes involved in symbiotic processes and to follow the growth and persistence of the root-nodule bacteria and free-living nitrogen-fixing bacteria in soils. Through the efforts of a large number of researchers we now have a better understanding of the ecology of rhizobia, environmental parameters affecting the infection and nodulation process, the nature of specificity, the biochemistry of host plants and microsymbionts, and chemical signalling between symbiotic partners. This volume gives a summary of current research efforts and knowledge in the field of biological nitrogen fixation. Since the research field is diverse in nature, this book presents a collection of papers in the major research area of physiology and metabolism, genetics, evolution, taxonomy, ecology, and international programs.
Author : Mustafizur Rahman
Publisher : Springer Science & Business Media
ISBN 13 : 9401586705
Total Pages : 244 pages
Book Rating : 4.4/5 (15 download)
Download or read book Biological Nitrogen Fixation Associated with Rice Production written by Mustafizur Rahman and published by Springer Science & Business Media. This book was released on 2013-04-09 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological nitrogen fixation (BNF) has become important in rice farming systems because this process diminishes the need for expensive chemical fertilizers which have been associated with numerous health and environmental problems. The extensive exploitation of BNF would provide economic benefits to small farmers, avoiding all malign influences of chemical fertilizers. Meanwhile, advances in biotechnology have brought rice genetics to the threshold of new opportunities for increasing rice production. This volume focuses, in six different sessions, on the role of BNF in the improvement of rice production in the light of the current state of the art of BNF technology transfer and diffusion. New ideas on BNF technology in research, extension information and inoculant technology are also included, together with the socio-economic impacts of using BNF in rice farm systems.
Author : Howard James Dicker
Publisher :
ISBN 13 :
Total Pages : 372 pages
Book Rating : 4.:/5 (525 download)
Download or read book Nitrogen Fixation in a Delaware Salt Marsh written by Howard James Dicker and published by . This book was released on 1979 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Edward J. Carpenter
Publisher : Elsevier
ISBN 13 : 1483288293
Total Pages : 919 pages
Book Rating : 4.4/5 (832 download)
Download or read book Nitrogen in the Marine Environment written by Edward J. Carpenter and published by Elsevier. This book was released on 2013-10-22 with total page 919 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen in the Marine Environment provides information pertinent to the many aspects of the nitrogen cycle. This book presents the advances in ocean productivity research, with emphasis on the role of microbes in nitrogen transformations with excursions to higher trophic levels. Organized into 24 chapters, this book begins with an overview of the abundance and distribution of the various forms of nitrogen in a number of estuaries. This text then provides a comparison of the nitrogen cycling of various ecosystems within the marine environment. Other chapters consider chemical distributions and methodology as an aid to those entering the field. This book discusses as well the enzymology of the initial steps of inorganic nitrogen assimilation. The final chapter deals with the philosophy and application of modeling as an investigative method in basic research on nitrogen dynamics in coastal and open-ocean marine environments. This book is a valuable resource for plant biochemists, microbiologists, aquatic ecologists, and bacteriologists.
Author : Howard James Dicker
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (332 download)
Download or read book Nitrogen Fixation in the Lewes, Delaware Salt Marsh written by Howard James Dicker and published by . This book was released on 1977 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Serena Maria Moseman
Publisher :
ISBN 13 :
Total Pages : 231 pages
Book Rating : 4.:/5 (239 download)
Download or read book Diversity and Function from the Ground Up written by Serena Maria Moseman and published by . This book was released on 2008 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant-dependent functions of coastal wetlands are strongly influenced by nitrogen availability. Diazotrophs, microbes that fix nitrogen, in surface sediments and rhizospheres (roots and surrounding sediments) of plants may fundamentally affect wetland ecosystems. In testing roles of nitrogen fixing microbes in niche differentiation between two key plants, Spartina foliosa and Salicornia virginica, a mensurative experiment reveals plant-specific diel patterns of nitrogen fixation (acetylene reduction). Functional disparities in nitrogen fixation rates between late- and early-successional salt marshes in Tijuana Estuary (1 pair) and Venice lagoon, Italy (2 pairs) also show roles of diazotrophs in facilitating marsh development. Nitrogen fixation rates are consistently greater in marshes with less plant growth, which is not always a function of marsh age. Fates of fixed nitrogen are tested in isotopic enrichment experiments within an early successional marsh (Tijuana Estuary). Newly fixed nitrogen reaches S. foliosa roots and several animal consumers within 3-8 days. Thus, nitrogen fixation has broad significance for wetland ecosystem function. The role of diazotroph diversity in enhancing or conferring stability to the nitrogen fixation (acetylene reduction) rates was tested in wetlands experiencing biological invasion, restoration, and sediment and nutrient stresses, via genetic fingerprinting (T-RFLP) of the nifH gene (coding dinitrogenase reductase). The invasive mussel, Musculista senhousia, salt cedar, Tamarix spp., and mangrove, Avicennia marina each produced different effects on nitrogen fixation rates, despite maintenance of diazotroph diversity. In the early successional marsh at Tijuana Estuary, positive relationships among diazotroph diversity, nitrogen fixation rates, and S. foliosa height during one season of plant growth (Fall) demonstrate context-dependent complementarity. Effects of anthropogenic nutrient and sediment loading on nitrogen-fixing microbes are tested by field manipulations. Ammonium nitrate additions decrease nitrogen fixation rates but increase diversity of surface diazotrophs within 17 days, while sediment inputs enhanced and prolonged ammonium concentrations. As nitrogen fixation is highly responsive to the range of explored environmental changes, concepts of functional redundancy may not easily extend to microbial realms. Wetland management should more fully consider the role of plant-microbe interactions in mediating ecosystem functional responses to future global changes.
Author : John C. Gordon
Publisher :
ISBN 13 : 9789400968790
Total Pages : 352 pages
Book Rating : 4.9/5 (687 download)
Download or read book Biological Nitrogen Fixation in Forest Ecosystems written by John C. Gordon and published by . This book was released on 2014-01-15 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Malgorzata Kalina Zalejko
Publisher :
ISBN 13 :
Total Pages : 142 pages
Book Rating : 4.:/5 (222 download)
Download or read book Nitrogen Fixation in a Natural and a Constructed Southern California Salt Marsh written by Malgorzata Kalina Zalejko and published by . This book was released on 1990 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hermann Bothe
Publisher : Elsevier
ISBN 13 : 0080471331
Total Pages : 454 pages
Book Rating : 4.0/5 (84 download)
Download or read book Biology of the Nitrogen Cycle written by Hermann Bothe and published by Elsevier. This book was released on 2006-12-08 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: All organisms require nitrogen to live and grow. The movement of nitrogen between the atmosphere, biosphere, and geosphere in different forms is described by the nitrogen cycle. This book is an activity of the COST 856 Action on Denitrification. It covers all aspects of the N-cycle: chemistry, biology (enzymology, molecular biology), physics, applied aspects (greenhouse effect, N-pollution problems, practices in farming, in waste-water treatment, and more). In this book, leading editors offer the latest research available on dentrification (reduction of nitrates or nitrites commonly by bacteria- as in soil). * Provides details on denitrification and its general role in the environment * Offers latest research in N-Cycle and its reactions * Discusses impacts on various environments: agriculture, wetlands, plants, waste-water treatment and more * The only book available in the field since the last 20 years * Contains 27 chapters written by internationally highly recognized experts in the field * Covers all modern aspects, emphasizes molecular biology and ecology * Written in an easily understandable way
Author : K. van der Hoek
Publisher : Elsevier
ISBN 13 : 0080984681
Total Pages : 813 pages
Book Rating : 4.0/5 (89 download)
Download or read book Nitrogen, the Confer-N-s written by K. van der Hoek and published by Elsevier. This book was released on 2012-12-02 with total page 813 pages. Available in PDF, EPUB and Kindle. Book excerpt: The First International Nitrogen Conference provided an opportunity for researchers and decision-makers to exchange information on environmental pollution by nitrogen compounds on three scales: global, continental/regional and local. The main topics were air, ground water and surface water pollution; emission sources, atmospheric chemistry, deposition processes and effects; disturbance of nitrogen cycles, critical loads and levels; assessments, policy development and evaluation; target groups and abatement techniques; and new approaches leading to an integrated abatement strategy.The peer-reviewed papers from the Conference presented in this volume will provide readers with a comprehensive review of the transport, deposition and impact on ecosystems of nitrogen.
