Download or read book Microbial Ecology of Biogeochemical Interfaces Diversity Structure and Function of Microhabitats in Soil written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecohydrological Interfaces written by Stefan Krause and published by John Wiley & Sons. This book was released on 2023-10-12 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecohydrological Interfaces Comprehensive overview of the process dynamics and interactions governing ecohydrological interfaces Summarizing the interdisciplinary investigation of ecohydrological interface functioning, Ecohydrological Interfaces advances the understanding of their dynamics across traditional subject boundaries. It offers a detailed explanation of the underlying mechanisms and process interactions governing ecohydrological interface functioning from the micro scale to the ecosystem and regional scale. The multidisciplinary team of authors integrates and synthesises the current understanding of process dynamics at different ecohydrological interfaces to develop a unifying concept of their ecosystem functions. The work introduces novel experimental and model-based methods for characterizing and quantifying ecohydrological interface processes, taking account of innovative sensing and tracing technologies as well as microbial and molecular biology approaches. Key questions addressed in the book include: Which conditions stimulate the transformative nature of ecohydrological interfaces? How are ecohydrological interfaces organized in space and time? How does interface activity propagate from small to large scales? How do ecohydrological interfaces react to environmental change and what is their role in processes of significant societal value? As a research level text on the functionality and performance of ecohydrological interfaces, Ecohydrological Interfaces is primarily aimed at academics and postgraduate researchers. It is also appropriate for university libraries as further reading on a range of geographical, environmental, biological, and engineering topics.
Download or read book Advances in Soil Microbiology Recent Trends and Future Prospects written by Tapan Kumar Adhya and published by Springer. This book was released on 2018-02-28 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive collection of articles illustrating the importance of microbial community structure and function for ecosystem sustainability and environmental reclamation. It addresses a diverse range of topics, including microbial diversity, physiology, genomics, ecosystem function, interaction, metabolism, and the fruitful use of microbial communities for crop productivity and environmental remediation. In addition, the book explores issues ranging from general concepts on the diversity of microorganisms in soil, and ecosystem function to the evolution and taxonomy of soil microbiota, with future prospects. It covers cutting-edge methods in soil microbial ecological studies, rhizosphere microflora, the role of organic matter in plant productivity, biological nitrogen fixation and its genetics, microbial transformation of plant nutrients in soil, plant-growth-promoting rhizobacteria, and organic matter transformation. The book also discusses the application of microbes in biodegradation of xenobiotic contaminants. It covers bio-fertilizers and their role in sustainable agriculture and soil health, biological control of insect pests and plant pathogens, and the latest tools of omics in soil microbiology, i.e. genomics, proteomics, transcriptomics and metabolomics, which offer pioneering approaches to the exploration of microbial structure and function.
Download or read book Soil Microbiology Ecology and Biochemistry written by Eldor Paul and published by Elsevier. This book was released on 2024-01-01 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil Microbiology, Ecology, and Biochemistry, Fifth Edition addresses the increasingly important field of soil biota and their interactions in research and education. Soil biota are an important defining component of soils and one of Earth’s most important natural resources. It is especially relevant to today’s societal questions related to global change, ecosystem sustainability, and food security in our ever-changing environment. Revised by a group of world-renowned authors in many institutions and disciplines, Soil Microbiology, Ecology, and Biochemistry, Fifth Edition relates the breakthroughs in knowledge in this important field to its history as well as future applications. The new edition provides readable, practical, impactful information for its many applied and fundamental disciplines. There is no other available volume that, while providing the background and present knowledge in Soil Microbiology, Ecology and Biochemistry that also integrates the concepts such that they are of greatest usefulness by a broad group of readers. Provides step-by-step guidance on key procedures/processes Includes information on the modeling of soil microbial processes, as well as the greater application of models in facing societal challenges Stresses the importance of nitrogen and its relevance to plant growth, enzyme production, soil organic matter formation, food security, and environmental sustainability, including pollution
Download or read book Microbial Community Diversity Function and Succession in California s Mediterranean Habitats written by Emily Elizabeth Curd and published by . This book was released on 2016 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: We live on a predominantly microbial planet. I it is estimated that more than a billion microorganisms can live in a gram of soil. Microorganisms comprise the largest pool of genetic diversity on the planet and drive global biogeochemical cycles. Since microbial ecology is intimately associated with environment, changes in environmental conditions can have profound effects on the microbial diversity and function of microbial communities. In this dissertation I study; 1) the relationship between environmental heterogeneity and microbial diversity, 2) the relationship between the environment, microbial diversity, and microbial functional traits, and 3) microbial secession related to changing environmental conditions during anaerobic decomposition. Chapter 1 Annual grassland invasions can increase environmental heterogeneity and reduce the biological diversity of plants and animals. There is a generally positive relationship between environmental heterogeneity and biodiversity, and more specifically, soil heterogeneity is known to influence plant diversity. Here I test if the diversity of soil microorganisms, like that of plants, displays a positive relationship with soil environmental heterogeneity. Specifically, I test to see if invasive annual grasses lead to reductions in soil heterogeneity and microbial alpha- and beta- diversity. I sampled the soil profile across invasive annual grassland, oak woodland, and coastal sage scrub habitat and characterized environmental heterogeneity (soil percent carbon, nitrogen, water content, total dissolved solids, and pH in addition to litter percent carbon, nitrogen and C:N), alpha and beta diversity. I found that invasive annual grassland habitat has greater soil environmental homogeneity than native woody habitats throughout the soil profile. Annual grassland communities have lower alpha-, but not beta-, diversity than native woody species. Patterns of alpha diversity with depth differ between grassland and woody habitat, and although not significant, woody habitats have higher community heterogeneity. Alpha diversity and beta diversity show positive relationships with several measures of environmental heterogeneity, suggesting that like plants, soil microbial diversity increases with environmental heterogeneity. Annual grassland invasions into native woody habitats reduce soil microbial diversity. This is particularly true in deep soil communities. Chapter 2 Plant invasions frequently alter ecosystem processes in part because they modify soil microbial communities. These communities decompose the bulk of terrestrial organic matter by producing and releasing extracellular enzymes. California's native Mediterranean habitats (e.g. Oak woodland and coastal sage scrub) are invaded by annual grasses and are converted to invasive annual grasslands. I investigated the relationship between extracellular enzyme activities and microbial community composition in these habitats by examining 1) how extracellular enzyme activities differed between native and invasive habitats, 2) whether changes in microbial community correlate with changes in extracellular activity, and 3) if the composition of bacterial phyla that contain genes for extracellular enzymes differ between habitats. I found that annual grassland enzyme activities are much different from those of woody habitat, and the differences in enzyme activities between habitats generally declined with depth as did enzyme activities. There was also a strong correlation between community composition and extracellular enzyme activity. This correlation was not influenced by soil environmental variables. The relative abundance of phyla with genes for extracellular enzymes were similar between habitats and those genes are contained in distinct assemblages of phyla. Habitat change through annual grassland invasion modifies soil communities and their functions thought out the soil profile. Future studies on the effects of annual grassland invasion on ecosystem processes in deep soil are needed to fully understand the consequences of these invasions. Chapter 3. Natural tar seeps are the source of millions of fossils from animals that became entrapped, died and were decomposed over the millennia. The microbial communities responsible for the anaerobic decomposition of these entrapped animals are not known. However, microbial communities likely play a role in the rapid time to skeletonization of animal components submerged in tar. I hypothesized that high energy animal tissue would support fast growing taxa and support lower microbial diversity, and that microbial succession across different locations in the tar environment and animal tissue decay would resemble known patterns of microbial decomposition in similar habits. I sampled different locations in a tar seep and also bobcat limbs that were experimentally submerged in the seep and left to decay until skeletonization. Microbial communities were characterized using 16S rDNA sequencing of the V4 region. I found that decay communities had lower diversity than tar environment communities and that microbial succession proceeded similarly to that in analogous habitats. The addition of animal tissue into this tar seep appeared to lead to rapid microbial community succession. This microbial succession likely affected the rate of decomposition of this tissue. Future experiments are required to understand the role of microbial succession in determining the rate of decomposition and time to skeletonization in tar environments.
Download or read book The Microbial Regulation of Global Biogeochemical Cycles written by Johannes Rousk and published by Frontiers E-books. This book was released on 2014-10-17 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global biogeochemical cycles of carbon and nutrients are increasingly affected by human activities. So far, modeling has been central for our understanding of how this will affect ecosystem functioning and the biogeochemical cycling of carbon and nutrients. These models have been forced to adopt a reductive approach built on the flow of carbon and nutrients between pools that are difficult or even impossible to verify with empirical evidence. Furthermore, while some of these models include the response in physiology, ecology and biogeography of primary producers to environmental change, the microbial part of the ecosystem is generally poorly represented or lacking altogether. The principal pool of carbon and nutrients in soil is the organic matter. The turnover of this reservoir is governed by microorganisms that act as catalytic converters of environmental conditions into biogeochemical cycling of carbon and nutrients. The dependency of this conversion activity on individual environmental conditions such as pH, moisture and temperature has been frequently studied. On the contrary, only rarely have the microorganisms involved in carrying out the processes been identified, and one of the biggest challenges for advancing our understanding of biogeochemical processes is to identify the microorganisms carrying out a specific set of metabolic processes and how they partition their carbon and nutrient use. We also need to identify the factors governing these activities and if they result in feedback mechanisms that alter the growth, activity and interaction between primary producers and microorganisms. By determining how different groups of microorganisms respond to individual environmental conditions by allocating carbon and nutrients to production of biomass, CO2 and other products, a mechanistic as well as quantitative understanding of formation and decomposition of organic matter, and the production and consumption of greenhouse gases, can be achieved. In this Research Topic, supported by the Swedish research councils' programme "Biodiversity and Ecosystem Services in a Changing Landscape" (BECC), we intend to promote this alternative framework to address how cycling of carbon and nutrients will be altered in a changing environment from the first-principle mechanisms that drive them – namely the ecology, physiology and biogeography of microorganisms – and on up to emerging global biogeochemical patterns. This novel and unconventional approach has the potential to generate fresh insights that can open up new horizons and stimulate rapid conceptual development in our basic understanding of the regulating factors for global biogeochemical cycles. The vision for the research topic is to facilitate such progress by bringing together leading scientists as proponents of several disciplines. By bridging Microbial Ecology and Biogeochemistry, connecting microbial activities at the micro-scale to carbon fluxes at the ecosystem-scale, and linking above- and belowground ecosystem functioning, we can leap forward from the current understanding of the global biogeochemical cycles.
Download or read book Microbial Ecological and Biogeochemical Processes in the Soil Vadose Zone Groundwater Habitats written by Zifang Chi and published by Frontiers Media SA. This book was released on 2023-11-29 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microorganisms in Soils Roles in Genesis and Functions written by Francois Buscot and published by Springer Science & Business Media. This book was released on 2007-01-04 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Microbial Diversity in Ecosystem Sustainability and Biotechnological Applications written by Tulasi Satyanarayana and published by Springer. This book was released on 2019-07-17 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses microbial diversity in various habitats and environments, its role in ecosystem maintenance, and its potential applications (e.g. biofertilizers, biocatalysts, antibiotics, other bioactive compounds, exopolysaccharides etc.). The respective chapters, all contributed by renowned experts, offer cutting-edge information in the fields of microbial ecology and biogeography. The book explains the reasons behind the occurrence of various biogeographies and highlights recent tools (e.g. metagenomics) that can aid in biogeography studies by providing information on nucleic acid sequence data, thereby directly identifying microorganisms in various habitats and environments. In turn, the book describes how human intervention results in depletion of biodiversity, and how numerous hotspots are now losing their endemic biodiversity, resulting in the loss of many ecologically important microorganisms. In closing, the book underscores the importance of microbial diversity for sustainable ecosystems.
Download or read book Advances in Soil Microbiology Recent Trends and Future Prospects written by Tapan Kumar Adhya and published by Springer. This book was released on 2018-01-30 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive collection of articles illustrating the importance of microbial community structure and function for ecosystem sustainability and environmental reclamation. It addresses a diverse range of topics, including microbial diversity, physiology, genomics, ecosystem function, interaction, metabolism, and the fruitful use of microbial communities for crop productivity and environmental remediation. In addition, the book explores issues ranging from general concepts on the diversity of microorganisms in soil, and ecosystem function, to the evolution and taxonomy of soil microbiota, with future prospects. It covers cutting-edge methods in soil microbial ecological studies, rhizosphere microflora, the role of organic matter in plant productivity, biological nitrogen fixation and its genetics, microbial transformation of plant nutrients in soil, plant-growth-promoting rhizobacteria, and organic matter transformation. The book also discusses the application of microbes in biodegradation of xenobiotic contaminants. It covers bio-fertilizers and their role in sustainable agriculture and soil health, biological control of insect pests and plant pathogens, and the latest tools of omics in soil microbiology, i.e. genomics, proteomics, transcriptomics and metabolomics, which offer pioneering approaches to the exploration of microbial structure and function.
Download or read book Biological Diversity and Function in Soils written by Richard Bardgett and published by Cambridge University Press. This book was released on 2005-09-22 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dynamic nature of current research into soil biodiversity is reflected in this excellent volume.
Download or read book Microbial Diversity in Ecosystem Sustainability and Biotechnological Applications written by Tulasi Satyanarayana and published by Springer Nature. This book was released on 2019-09-06 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume comprehensively reviews recent advances in our understanding of the diversity of microbes in various types of terrestrial ecosystems, such as caves, deserts and cultivated fields. It is written by leading experts, and highlights the culturable microbes identified using conventional approaches, as well as non-culturable ones unveiled with metagenomic and microbiomic approaches. It discusses the role of microbes in ecosystem sustainability and their potential biotechnological applications. The book further discusses the diversity and utility of ectomycorrhizal and entomopathogenic fungi and yeasts that dwell on grapes, it examines the biotechnological applications of specific microbes such as lichens, xylan- and cellulose-saccharifying bacteria and archaea, chitinolytic bacteria, methanogenic archaea and pathogenic yeasts.
Download or read book Microbial Ecology in Sustainable Agroecosystems written by Tanya E. Cheeke and published by CRC Press. This book was released on 2012-07-17 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: While soil ecologists continue to be on the forefront of research on biodiversity and ecosystem function, there are few interdisciplinary studies that incorporate ecological knowledge into sustainable land management practices. Conventional, high fossil-fuel input-based agricultural systems can reduce soil biodiversity, alter soil community structure and nutrient cycling, and lead to greater dependence on energy-intensive practices. Microbial Ecology in Sustainable Agroecosystems brings together soil ecologists, microbial ecologists, and agroecologists working globally to demonstrate how research in soil ecology can contribute to the long-term sustainability of agricultural systems. The book identifies five key areas of research that can be combined to support and direct sustainable land management practices: agriculture, biodiversity, ecosystem services, integrated soil ecology research, and policy. Topics include: A broad range of soil microbial processes in terms of the importance of microbial heterogeneity Inputs by soil microorganisms into wheat-farming systems The importance of arbuscular mycorrhizal fungi in making nutrients more available to crops The benefits and environmental problems associated with the use of crops genetically modified with Bacillus thuringiensis The incorporation of soil ecological or microbial ecological theory into agricultural practice to improve agricultural productivity and sustainability Challenges in sustainable agricultural research and the need for coalescing new avenues of research in agriculture and soil ecology The contributors range from long-time ecological researchers to graduate students and early career scientists, representing a wide spectrum of experience, ages, diversity, and research interests in this area. They cover the diversity and complexity of microbial activity and interactions in soil systems and the many ways in which microorganisms may be manipulated and managed to improve the functions of crop rhizospheres and thereby maximize crop yields and overall productivity. These recommendations can be used to direct and influence agricultural and environmental policy and guide future research in sustainable agricultural systems management.
Download or read book Microbial Biomass A Paradigm Shift In Terrestrial Biogeochemistry written by Kevin Russel Tate and published by World Scientific. This book was released on 2017-02-08 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microbial Biomass informs readers of the ongoing global revolution in understanding soil and ecosystem microbial processes. The first paper on the subject was written by David Jenkinson in 1966, and here new insights and expansions are given on the fascinating world of soil microbial processes. In terms of contemporary issues, it also serves to support urgent efforts to sustainably manage land to feed a growing world population without compromising the environment. It presents new methods of investigation which are leading to more sustainable management of ecosystems, and improved understanding of ecosystem changes in an increasingly warmer world.The book approaches the topic by looking at the emergence of our understanding of soil biological processes, and begins by tracing the conception and first measurement of soil microbial biomass. Following this, changes in ecosystems, and in natural ecosystem processes are discussed in relation to land management issues and global change. Microbial biomass and its diversity are recognized as key factors in finding solutions for more sustainable land and ecosystem management, aided by new molecular and other tools. Information from the use of these tools is now being incorporated into emerging microbial-explicit predictive models, to help us study changes in earth system processes.Perfect for use in research and practice, this book is written for undergraduate and graduate students, researchers and professionals of agronomy, chemistry, geology, physical geography, ecology, biology, microbiology, silviculture and soil science.
Download or read book Soil Microbial Associations written by V. Vancura and published by Elsevier. This book was released on 2012-12-02 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is the first publication of its kind to provide a fully comprehensive and detailed approach to the survey of microbial associations in soil: their structure and function in relation to soil fertility and environment protection. The problems covered by this title are presented on various levels of the ecological system; from subcellular phenomena occurring in the microbial cell (genetic and enzyme regulation), to processes taking place in the flow of mass and energy in the agroecosystem. The aim of this monograph is to contribute to the understanding of the laws of formation and function of microbial associations in natural and agricultural soils, and to build a scientific basis for the control of soil biological processes. Using a contemporary approach to some fields of soil microbiology, the book highlights the possibility of utilizing certain microorganisms and microbial processes to increase soil fertility and protect the environment. These critically evaluated and selected results were obtained at the Institute of Microbiology and the Institute of Experimental Phytotechnics of the Czechoslovak Academy of Sciences, in cooperation with the Institute of Microbiology of the Academy of Sciences of the USSR.
Download or read book Advances in Microbial Ecology written by M. Alexander and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: The literature in microbial ecology is growing rapidly. Journals in many countries dealing with microbiology, ecology, environmental sciences, and environmental technology are publishing an ever-increasing number of papers, and these reports are providing microbial ecologists with a wealth of information. This body of data is now so large and the research is published in so many journals and mono graphs that maintaining an overview of the development of the field grows more difficult. The role of Advances in Microbial Ecology thus becomes more obvious with time. The articles in the present volume encompass an array of topics appropriate to the development of the discipline of microbial ecology. Both terrestrial and aquatic ecosystems are subjects of attention, and a variety of microbiological groups come under review. Furthermore, methodological problems and ap proaches are not overlooked. The ecology of protozoa, constraints on their populations, and their role in nutrient cycling and energy flow are considered by J. D. Stout. A unique micro environment is discussed by B. Norkrans, the surface microlayer of aquatic eco systems, and Dr. Norkrans presents information on a field that has blossomed in the last few years. The subject of the review by H. S. Lowendorf is the genus Rhizobium, a group of bacteria whose importance has grown as the cost of fuel for production of nitrogen fertilizers and ultimately for protein production has increased.
Download or read book Microbial Communities written by Heribert Insam and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on decomposer communities of terrestrial ecosystems for a long time has focussed on microbial biomass and gross turnover parameters. Recently, more and more attempts are made to look beyond the biomass, and more specifically determine functions and populations on a smaller scale-in time and space. A multitude of techniques is being improved and developed. Garland and Mills (1991) triggered a series of publications on substrate utilization tests in the field of microbial ecology. Despite several promising results for different applications in different laboratories, many problems concerning the assay and the interpretation of results became evident. After individual discussions on the approach with colleagues from various laboratories we started to plan a workshop on the matter. The response on our first circular was extraordinary, and instead of a small workshop it became a meeting with almost 150 participants. The meeting was named 'Substrate use for characterization of microbial communities in terrestrial ecosystems' (SUBMECO) and was held in Innsbruck, Austria, from Oct. 16-18, 1996. The very focussed scope attracted enthusiastic advocates of the approach, and also serious critics. Some of the topics concerned improvements of current inoculation and incubation techniques, ranging from sample pre-treatment, inoculum density and incubation temperature to statistical data handling. New methods for calculating microbial diversity were proposed, as well as bootstrap methods that allow statistics with many variables on a relatively low number of replicates.
