Denitrification In Soil And Sediment

Author : Niels Peter Revsbech,Jan Sørensen
Publisher : Springer Science & Business Media
Page : 352 pages
File Size : 51,8 Mb
Release : 2013-11-11
Category : Science
ISBN : 9781475799699

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Denitrification in Soil and Sediment by Niels Peter Revsbech,Jan Sørensen Pdf

The formation of atmospheric nitrogen gas by denitrifying bacteria may represent a significant nutrient sink in natural ecosystems. The rate of denitrification has often been difficult to measure in situ, however, and new methodologies should stimulate research on distribution of activity in space and time. The load of fertilizer nitrogen in modem agriculture has led to increasing nutrient reservoirs in recipient subsoils, aquifers, inland waters and coastal seas. By its conversion of nitrate to atmospheric nitrogen, bacterial denitrification is the only biological process to potentially reduce the impact of increasing nutrient loadings by fertilizer nitrogen in the environment. As part of a scientific program set up by the Danish Ministry of Environment to study environment cycling of nitrogen, phosphorous and organic matter (NPO program) in the light of agricultural, domestic and industrial activities, a symposium on DENITRIFICATION IN SOIL AND SEDIMENT was held at the University of Aarhus, Denmark from 6-9 June 19i\9. On the basis of lectures given at the symposium, this book contains a number of invited contributions on the regulation of denitrification activity (control of enzyme synthesis and activity) and measurement of in situ rates of denitrification in terrestrial and aquatic environments (control factors, diel and seasonal variations, etc). Emphasis has been placed on including the recent improvements in methodologies and current understanding of process regulation, however the book also contains examples of integrated research on the significance of denitrification in environmental nutrient cycling.

Author : J. F. van Kessel
Publisher : Bernan Press(PA)
Page : 104 pages
File Size : 45,7 Mb
Release : 1976-01-01
Category : Denitrification
ISBN : 9022006204

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Influence of Denitrification in Aquatic Sediments on the Nitrogen Content of Natural Waters by J. F. van Kessel Pdf

Author : T. Henry Blackburn,Jan Sorensen,Jan Sørensen
Publisher : Unknown
Page : 488 pages
File Size : 48,5 Mb
Release : 1988-03-21
Category : Science
ISBN : UCSD:31822036170066

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Nitrogen Cycling in Coastal Marine Environments by T. Henry Blackburn,Jan Sorensen,Jan Sørensen Pdf

Nitrogen discharge to the coastal environment has been increasing, posing the threat of accelerated eutrofication. Considerable research has been conducted in recent years to examine the impact of the nitrogen loading in coastal ecosystems. Based on proceedings from a SCOPE symposium held at the University of Aarhus in July of 1985, this volume covers a variety of up-to-date developments in research on nitrogen cycling in coastal marine environments. Topics include the role of nitrogen in algal productivity, regeneration of nutrients in the water column and the sediments, and the flow of nitrogen in coastal ecosystems.

Author : Dennis E. Rolston,Francis Everett Broadbent
Publisher : Unknown
Page : 96 pages
File Size : 41,7 Mb
Release : 1977
Category : Denitrification
ISBN : UCR:31210012666416

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Field Measurement of Denitrification by Dennis E. Rolston,Francis Everett Broadbent Pdf

Author : Rattan Lal,B.A. Stewart
Publisher : CRC Press
Page : 380 pages
File Size : 48,9 Mb
Release : 2018-03-15
Category : Nature
ISBN : 9781351857413

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Soil Nitrogen Uses and Environmental Impacts by Rattan Lal,B.A. Stewart Pdf

Nitrogen (N) is potentially one of the most complex elements on the Earth. It is necessary for all biological activity, but creates negative impacts on water and air quality. There is a balancing act between deficiency and surplus and the forms of N available further complicate our understanding of the dynamics. Biological fixation provides some plants with N supply while others are totally dependent upon N being available in the soil profile for the roots to extract. Nevertheless, the demand for N will increase because the human population with its increasing growth requires more protein and thus more N. Understanding the global N cycle is imperative to meeting current and future nitrogen demands while decreasing environmental impacts. This book discusses availability, production, and recycling of N in air, water, plants, and soils. It features information on N impacts to soil and water quality, management of N in agroecosystems, and techniques to maximize the use efficiency while minimizing the risks of leakage of reactive N into the environment. This volume in the Advances in Soil Science series is specifically devoted to availability, production, and recycling of N with impact on climate change and water quality, and management of N in agroecosystems in the context of maximizing the use efficiency and minimizing the risks of leakage of reactive N (NO-3, N¬2O) into the environment.

Author : Pan Ming Huang,Yuncong Li,Malcolm E. Sumner
Publisher : CRC Press
Page : 2272 pages
File Size : 43,6 Mb
Release : 2018-10-03
Category : Science
ISBN : 9781439803042

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Handbook of Soil Sciences (Two Volume Set) by Pan Ming Huang,Yuncong Li,Malcolm E. Sumner Pdf

An evolving, living organic/inorganic covering, soil is in dynamic equilibrium with the atmosphere above, the biosphere within, and the geology below. It acts as an anchor for roots, a purveyor of water and nutrients, a residence for a vast community of microorganisms and animals, a sanitizer of the environment, and a source of raw materials for co

Author : Hermann Bothe,William Edward Newton,Stuart Ferguson
Publisher : Elsevier
Page : 451 pages
File Size : 42,9 Mb
Release : 2007
Category : Electronic
ISBN : 9780444531087

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Biology of the Nitrogen Cycle by Hermann Bothe,William Edward Newton,Stuart Ferguson Pdf

Author : Dennis R. Keeney
Publisher : Unknown
Page : 32 pages
File Size : 45,6 Mb
Release : 1975
Category : Sediments (Geology)
ISBN : WISC:89038559407

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Concurrent Nitrification-denitrification at the Sediment-water Interface as a Mechanism for Nitrogen Losses from Lakes by Dennis R. Keeney Pdf

Author : Edward J. Carpenter,Douglas G. Capone
Publisher : Elsevier
Page : 919 pages
File Size : 42,6 Mb
Release : 2013-10-22
Category : Science
ISBN : 9781483288291

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Nitrogen in the Marine Environment by Edward J. Carpenter,Douglas G. Capone Pdf

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 : M.R. Carter,E.G. Gregorich
Publisher : CRC Press
Page : 1264 pages
File Size : 53,7 Mb
Release : 2007-08-03
Category : Science
ISBN : 9781420005271

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Soil Sampling and Methods of Analysis by M.R. Carter,E.G. Gregorich Pdf

Thoroughly updated and revised, this second edition of the bestselling Soil Sampling and Methods of Analysis presents several new chapters in the areas of biological and physical analysis and soil sampling. Reflecting the burgeoning interest in soil ecology, new contributions describe the growing number and assortment of new microbiological

Author : James Stuart Schepers,William Raun
Publisher : ASA-CSSA-SSSA
Page : 994 pages
File Size : 51,6 Mb
Release : 2008
Category : Technology & Engineering
ISBN : 0891181644

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Nitrogen in Agricultural Systems by James Stuart Schepers,William Raun Pdf

Review of the principles and management implications related to nitrogen in the soil-plant-water system.

Author : Larry W. Canter
Publisher : Routledge
Page : 215 pages
File Size : 44,7 Mb
Release : 2019-01-22
Category : Technology & Engineering
ISBN : 9781351428651

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Nitrates in Groundwater by Larry W. Canter Pdf

This time-saving book provides extensive coverage of all important aspects of nitrates in groundwater, ranging from prevention to problem assessment to remediation. It begins by highlighting the nitrogen cycle and related health concerns, providing both background information and a unique perspective on health issues. It then analyzes subsurface pr

Author : Francois Buscot,Ajit Varma
Publisher : Springer Science & Business Media
Page : 426 pages
File Size : 40,9 Mb
Release : 2007-01-04
Category : Nature
ISBN : 9783540266099

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Microorganisms in Soils: Roles in Genesis and Functions by Francois Buscot,Ajit Varma Pdf

For this third volume of the series Soil Biology, internationally renowned scientists shed light on the significant roles of microbes in soil. Key topics covered include: bioerosion, humification, mineralization and soil aggregation; Interactions in the mycorrhizosphere; microbes and plant nutrient cycling; Microbes in soil surface or toxic metal polluted soils; Use of marker genes and isotopes in soil microbiology, and many more.

Author : E. Rosenberg
Publisher : Springer Science & Business Media
Page : 280 pages
File Size : 42,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401116725

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Microorganisms to Combat Pollution by E. Rosenberg Pdf

This volume contains material first presented at an international workshop on the 'Use of Microorganisms to Combat Pollution', held in Israel, May 10--18, 1992. The workshop was sponsored by the Bat-Sheva de Rothschild Foundation for the Advancement of Science and included microbiologists, biochemists and geneticists from universities, environmental agencies and the military. Each of the contributors to this volume is an ack nowledged expert on the treatment of one or more types of pollution using microorganisms or their enzymes. This book differs from most published symposia proceedings in the breadth of coverage of each subject. Most of the chapters are divided into three parts: (a) A general presentation of the source and toxicity of the pollutant, (b) a review of the current state-of-the-science on the biodegradation of that pollutant and (c) the authors' unique research experiences on the problem. In several examples, the authors have presented data from both laboratory studies and field trials. Thus, the book contains not only the theoretical background on the biodegradation of pollutants, but also practical experiences in applying this knowledge to solving significant pollution problems.

Author : S.K. de Datta,W.H. Patrick
Publisher : Springer Science & Business Media
Page : 191 pages
File Size : 51,8 Mb
Release : 2012-12-06
Category : Nature
ISBN : 9789400944282

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Nitrogen Economy of Flooded Rice Soils by S.K. de Datta,W.H. Patrick Pdf

The steadily increasing cost of nitrogen fertilizer has resulted in more emphasis on basic and applied studies to improve nitrogen use efficiency in lowland rice. The efficiency of fertilizer nitrogen in farmers' fields is shockingly low ~ a luxury resource-scarce farmers in tropical Asia can ill afford. We believe it is critical to quantify the basic transformation processes and develop management practices for higher N use efficiency for two reasons. They are: 1. Nitrogen fertilizer together with water management is a key factor for achieving the yield potentials of modern rices. 2. Fertilizer nitrogen prices are high and most Asian rice farmers are poor. The International Rice Research Institute (IRRI), Philippines; Internation al Fertilizer Development Center (IFDC), USA; Commonwealth Scientific and Industrial Research Organization (CSIRO), Australia; U.S. Universities (Louisiana, Cornell, California, Arkansas and others); and Dr Justus Leibig University in West Germany are actively engaged in individual or collaborative research that addresses basic transformation processes on N gains and losses and management practices to maximize N use efficiency in rice. It is appropriate to update and summarize, in a double issue of Fertilizer Research, the 10 papers presented at the special symposium organized by the American Society of Agronomy (ASA) at the 75th Annual Meeting in Washington, D.C. in 1983. S.K. De Datta, Head of Agronomy Department, IRRI, was chairman of the International Agronomy Division of ASA (A-6) in 1982 and 1983.