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Impact of Organic Waste Residues on Structure and Function of Soil Bacterial Communities

Impact of Organic Waste Residues on Structure and Function of Soil Bacterial Communities
Author: Karin Nyberg
Publisher:
Total Pages: 36
Release: 2006
Genre: Bacteria, Nitrifying
ISBN: 9789157670694

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The recirculation of biologically treated organic waste back to soil will help to promote sustainable agricultural development. However, although the use of such waste residues as fertilizers generally is beneficial for the soil ecosystem there is concern regarding their content of pollutants. In this thesis, the effects of biologically treated organic waste residues on the structure and function of ammonia oxidizing bacteria (AOB) and total bacteria communities in agricultural soils were investigated using molecular fingerprinting methods in combination with potential activity measurements. The AOB perform the rate-limiting step in the nitrification process and are considered to be sensitive to environmental disturbances. Using AOB activity as an indicator, different organic waste residues were demonstrated to contain organic compounds that inhibit this group of organisms. Furthermore, it was possible to identify a correlation between the degree of inhibition of AOB activity and the concentration of phenols. However, in these studies no link between activity inhibition and shifts in community structure was seen. The possibility to link effects on bacterial activity to community structure was further studied by targeting the active AOB by BrdU incorporation. In this way, short-term effects of a pollutant (4-ethylphenol) on the active AOB community structure were identified, which could not be detected on the total community. Effects of different fertilization regimes on the structure and function of AOB became more evident when a long-term field study was investigated. A link between AOB community structure and metabolic function was detected in a soil subjected to different fertilization regimes for 50 years. In addition, a low AOB diversity was detected in soil treatments in which the total bacterial community also showed signs of stress. Thus, the decrease in AOB activity and diversity also indicated a stressed soil environment. In conclusion, this thesis has demonstrated that pollutants in biologically treated organic waste residues can have negative impacts on the structure and function of AOB communities in soil. However, potential risks must be compared with the benefits arising from the use of organic waste residues in agriculture.


Microbes in Land Use Change Management

Microbes in Land Use Change Management
Author: Jay Shankar Singh
Publisher: Elsevier
Total Pages: 611
Release: 2021-08-20
Genre: Science
ISBN: 0323858945

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Microbes in Land Use Change Management details the various roles of microbial resources in management of land uses and how the microbes can be used for the source of income due to their cultivation for the purpose of biomass and bioenergy production. Using various techniques, the disturbed and marginal lands may also be restored eco-friendly in present era to fulfil the feeding needs of mankind around the globe. Microbes in Land Use Change Management provides standard and up to date information towards the land use change management using various microbial technologies to enhance the productivity of agriculture. Needless to say that Microbes in Land Use Change Management also considers the areas including generation of alternative energy sources, restoration of degraded and marginal lands, mitigation of global warming gases and next generation -omics technique etc. Land use change affects environment conditions and soil microbial community. Microbial population and its species diversity have influence in maintaining ecosystem balance. The study of changes of microbial population provides an idea about the variation occurring in a specific area and possibilities of restoration. Meant for a multidisciplinary audience Microbes in Land Use Change Management shows the need of next-generation omics technologies to explore microbial diversity. Describes the role of microbes in generation of alternative source of energy Gives recent information related to various microbial technology and their diversified applications Provides thorough insight in the problems related to landscape dynamics, restoration of soil, reclamation of lands mitigation of global warming gases etc. eco-friendly way using versatility of microbes Includes microbial tools and technology in reclamation of degraded, disturbed and marginal lands, mitigation of global warming gases


Plant Litter

Plant Litter
Author: Björn Berg
Publisher: Springer Science & Business Media
Total Pages: 324
Release: 2013-11-19
Genre: Science
ISBN: 3642388213

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Since the publication of the 2nd edition, there have been substantial developments in the field of litter decomposition. This fully revised and updated 3rd edition of Plant Litter reflects and discusses new findings and re-evaluates earlier ones in light of recent research and with regard to current areas of investigation. The availability of several long-term studies allows a more in-depth approach to decomposition patterns and to the later stages of decomposition, as well as to humus formation and accumulation. The latest information focuses on three fields: - the effects of manganese on decomposition and possibly on carbon sequestration, - new findings on decomposition dynamics, and - the new analytical technique using 13C-NMR.


Environmental Impacts of Soil Component Interactions

Environmental Impacts of Soil Component Interactions
Author: P. M. Huang
Publisher: CRC Press
Total Pages: 472
Release: 1995-03-29
Genre: Nature
ISBN:

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V. 1 - Natural and anthropogenic organics; v. 2 - Metals, other inorganics, and microbial activities. General soil quality as influenced by interactions of soil minerals with organics and microorganisms: Organic-inorganic interections in soils and their effects on soil quality; Sorption phenomena between inorganic and organic compounds in soils: impacts on transformation processes; Role of aluminium and iron in the accumulation of organic matter in soils with variable charge; Sorption of ions by soil organic matter and clay-organics at low ionic strength; Water potential, soil microhabitats, and microbial development; Effect of citric acid on interlayer adsorption of hydroxy-aluminosilicate ions by montmorillonite; Microbial oxidation of pyrites in relation to its efficiency in alkali soil reclamation; Modification of gelation properties of colloidal solids from oil sands: extraction impact on fine tailings formation; Position paper of part I; Transformations of natural and anthropogenic organic compounds as affected by soil minerals and microorganisms: Natural organics; Recent advances in organomineral interactions: implications for carbon cycling and soil structure; The role of short-range ordered mineral colloids in abiotic transformations of organics components in the environment; Influence of pyrogallol on the catalytic action of iron and managenese oxides in amino acid transformation; Photochemical effect on the abiotic transformations of polyphenolics as catalyzed by Mn(IV) oxide; Potential of the supercitical fluid extraction technique for characterizing organic-inorganic interactions in soils; Dissolution and fractionation of calcium-bound and iron-and aluminium-bound humus in soils; Rhe quality of soil organic matter as characterized by soil CPMAS C-NMR, and Py-FIMS; Extracellular polysaccharides: an interface between microorganisms and soil constituents; Low-molecular-weigh aliphatic carboxylic acids in some andisols of Japan; Relationship between organic acids and microorganisms on a kong-term cropping site in southeastern Australia; Effect of the addition of plant residues on the mineralization of sulfur in Costa Rican soils; Anthropogenic organics: Sorption and biodegradation of organic contaminants in soils: conceptual representations of process coupling; The role of dissolved metals and metal-containing surfaces in catalyzing the hydrolysis of organic pollutants; The role of abiotic and biotic catalysts in the transformation of phenolic compounds; The role of abiotic interections with humic substances on the environmental impact of organic pollutants; Adsorption mechanisms and abiotic catalytic transformations of some agrochemicals by clay minerals; Interactions between manganese oxides and multiple ringed aromatic compounds; Mobility and persistence of metolachlor and terbuthylazine in field lysimeters; Soil-pesticide interactions and their impact on the volatilization process; Factors affecting the movements, reactions, and biotransformations ox xenobiotics; Effect of soil minerals on the microbial formation of enzymes and their possible use in remediation of chemically polluted sites; Position paper of part II; Effect of microorganisms on mobility of heavy metals in soils; Interactions of copper with soil humic substances; Adsorption of phosphate on variable charge minerals: competitive effect of organic ligands; Cadmium adsorption on the hydroxyaluminum-montmorillonite complex as influencend by oxalate; Influence of citrate on selenite sorption-desorption on short-range ordered aluminum hydroxides; Role of amorphous fe oxides in controlling retention of heavy metal elements in soils; Effect of natural organic matter and pH on the bioavailability of metal ions in soils; Seasonal changes of organic matter, pH, nitrogen and some metals in forest topsoils in Austria: a case study of two soils with and whithout a litter layer; Substituion of rock phosphate and legumes for commercial fertilizers; Effect of single and combined inoculation with azotobacter and VA mycorrhizal fungi on growth and mineral nutrient contents of maize and wheat plants; Position paper of part I; Interactions of clays with microorganisms and bacterial survival in soil: a physicochemical perspective; Enumeration, survival, and beneficial activities of microorganisms introduced into soil; Effects of clay minerals, oxyhydroxides, and humic matter on microbial communities of soil, sediment, and water; Activity, stability, and kinetc properties of enzymes immobilized on clay minerals and organomineral complexes; Influence of site conditions and heavy metals on enzyme activities of forest topsoils; Aluminum toxicity: a major stress for microbes in the environment; Biological response to contamination with pentachlorophenol and mercuric chloride in a high organic matter soil; Ecology of 2,4-D degradation in three palouse silt loam soils.


Soil Enzymology in the Recycling of Organic Wastes and Environmental Restoration

Soil Enzymology in the Recycling of Organic Wastes and Environmental Restoration
Author: Carmen Trasar-Cepeda
Publisher: Springer Science & Business Media
Total Pages: 355
Release: 2011-09-30
Genre: Nature
ISBN: 3642211623

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Soil enzymes play a fundamental role in many soil processes such as the mineralization of organic matter, the synthesis of humic substances, the degradation of xenobiotics or the mechanisms involved in the biocontrol of plant pathogens. Their direct link with soil microorganisms gives them a key role as biomonitors of the evolution of soil quality or in the monitoring of the application of organic amendments to degraded soils. As a consequence of the importance of soil enzymes on soil processes, there is an increasing interest in their study, as well as in the application of molecular techniques as diagnostic tools.


Soil Organic Matter in Temperate AgroecosystemsLong Term Experiments in North America

Soil Organic Matter in Temperate AgroecosystemsLong Term Experiments in North America
Author: Eldor A. Paul
Publisher: CRC Press
Total Pages: 436
Release: 1996-11-26
Genre: Technology & Engineering
ISBN: 9780849328022

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The presence - or absence - of soil organic matter (SOM) has important implications for agricultural productivity. It could also have significant implications for global climate due to its role as a source/sink of carbon. Therefore, it is important to understand the issues related to the accumulation or loss of SOM, to use what we have learned from experiments to make sound decisions about soil and crop management, and to test models and future concepts concerning SOM management. A database is included with the book, presenting tabular data for 34 sites in North America. Soil Organic Matter in Temperate Agroecosystems discusses all of these issues and more, answering such questions as:


Industrial Applications

Industrial Applications
Author: Martin Hofrichter
Publisher: Springer Science & Business Media
Total Pages: 492
Release: 2010-09-13
Genre: Science
ISBN: 364211458X

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This volume gives a survey of the state of the art in the traditional fields of industrial mycology as well as of selected novel applications of fungi. The first section deals with the use of fungi in the production and processing of bread, cheese, beer and wine, traditional Asian fermentation products and edible mushrooms. The second section is devoted to the production of fungal metabolites and enzymes representing value-added products. In addition to antibiotics, alkaloids organic acids, vitamins and industrial enzymes, which have successfully been in use for decades, it is also dedicated to fungal metabolites, such as insecticidal and nematicidal compounds, immunosurppressants and flavors with promising biotechnological potential. In the next section, the recent developments in fungal biotransformation of small molecules, the bioconversion of lignocelluloses as well as the use of fungi in metal recovery are presented. The final part introduces some innovative new trends in the field of applied mycology: the preparation of fungal bioherbicides, recent genomic approaches for the identification of biopolymer degrading enzymes, current developments in using oxidative enzymes from fungi as well as new attempts to transfer fungal remediation technologies into practice.


Decomposition in Terrestrial Ecosystems

Decomposition in Terrestrial Ecosystems
Author: Michael John Swift
Publisher: Univ of California Press
Total Pages: 388
Release: 1979-01-01
Genre: Science
ISBN: 9780520040014

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