The Microbial Regulation Of Global Biogeochemical Cycles
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The Microbial Regulation Of Global Biogeochemical Cycles
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Author : Johannes Rousk
language : en
Publisher: Frontiers E-books
Release Date : 2014-10-17
The Microbial Regulation Of Global Biogeochemical Cycles written by Johannes Rousk and has been published by Frontiers E-books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-17 with Biogeochemical cycles categories.
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.
Microbial Regulation Of Soil Carbon Cycling In Terrestrial Ecosystems
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Author : Hui Li
language : en
Publisher: Frontiers Media SA
Release Date : 2023-11-15
Microbial Regulation Of Soil Carbon Cycling In Terrestrial Ecosystems written by Hui Li and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-11-15 with Science categories.
Global Biogeochemical Cycles
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Author : Butcher
language : en
Publisher: Academic Press
Release Date : 1992-08-12
Global Biogeochemical Cycles written by Butcher and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-08-12 with Science categories.
Global biogeochemical cycles
Soil Multi Meta Omics Unraveling Microbial Regulation At Three Post Genomic Levels
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Author : Andreas Breidenbach
language : en
Publisher:
Release Date : 2024
Soil Multi Meta Omics Unraveling Microbial Regulation At Three Post Genomic Levels written by Andreas Breidenbach and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024 with categories.
Soil functions are key in all ecosystems globally. Specifically soils play a pivotal role in ecosystem biogeochemical cycles, sequestering but also mineralizing carbon (C), and in this context releasing nutrients from the soil organic matter (SOM). This thesis aims to improve our understanding of key soil microbial functions involved in C and nutrient cycling, starting with a case study from a grassland ecosystem where degradation induces massive C losses and by that shifts in C and nutrient stoichiometry, which induce cascading effects of the interaction of microbes and plants with C and n...
Bacterial Biogeochemistry
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Author : Tom Fenchel
language : en
Publisher: Academic Press
Release Date : 2012-07-27
Bacterial Biogeochemistry written by Tom Fenchel and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-07-27 with Science categories.
Bacterial Biogeochemistry, Third Edition focuses on bacterial metabolism and its relevance to the environment, including the decomposition of soil, food chains, nitrogen fixation, assimilation and reduction of carbon nitrogen and sulfur, and microbial symbiosis. The scope of the new edition has broadened to provide a historical perspective, and covers in greater depth topics such as bioenergetic processes, characteristics of microbial communities, spatial heterogeneity, transport mechanisms, microbial biofilms, extreme environments and evolution of biogeochemical cycles. Provides up-to-date coverage with an enlarged scope, a new historical perspective, and coverage in greater depth of topics of special interest Covers interactions between microbial processes, atmospheric composition and the earth's greenhouse properties Completely rewritten to incorporate all the advances and discoveries of the last 20 years such as applications in the exploration for ore deposits and oil and in remediation of environmental pollution
The Role Of Microbial Communities In Tropical Ecosystems
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Author : Silvia Pajares
language : en
Publisher: Frontiers Media SA
Release Date : 2017-01-13
The Role Of Microbial Communities In Tropical Ecosystems written by Silvia Pajares and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-13 with Electronic book categories.
Tropical ecosystems are different in important ways from those of temperate regions. They are a major reservoir of plant and animal biodiversity and play important roles in global climate regulation and biogeochemical cycling. They are also under great threat due to the conversion of tropical ecosystems to other uses. Thus, in the context of global change, it is crucial to understand how environmental factors, biogeographic patterns, and land use changes interact to influence the structure and function of microbial communities in these ecosystems. The contributions to this Research Topic showcase the current knowledge regarding microbial ecology in tropical ecosystems, identify many challenges and questions that remain to be addressed and open up new horizons in our understanding of the environmental and anthropological factors controlling microbial communities in these important ecosystems.
The Role Of Microbial Communities In Tropical Ecosystems
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Author :
language : en
Publisher:
Release Date : 2017
The Role Of Microbial Communities In Tropical Ecosystems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Tropical ecosystems are different in important ways from those of temperate regions. They are a major reservoir of plant and animal biodiversity and play important roles in global climate regulation and biogeochemical cycling. They are also under great threat due to the conversion of tropical ecosystems to other uses. Thus, in the context of global change, it is crucial to understand how environmental factors, biogeographic patterns, and land use changes interact to influence the structure and function of microbial communities in these ecosystems. The contributions to this Research Topic showcase the current knowledge regarding microbial ecology in tropical ecosystems, identify many challenges and questions that remain to be addressed and open up new horizons in our understanding of the environmental and anthropological factors controlling microbial communities in these important ecosystems.Tropical ecosystems are different in important ways from those of temperate regions. They are a major reservoir of plant and animal biodiversity and play important roles in global climate regulation and biogeochemical cycling. They are also under great threat due to the conversion of tropical ecosystems to other uses. Thus, in the context of global change, it is crucial to understand how environmental factors, biogeographic patterns, and land use changes interact to influence the structure and function of microbial communities in these ecosystems. The contributions to this Research Topic showcase the current knowledge regarding microbial ecology in tropical ecosystems, identify many challenges and questions that remain to be addressed and open up new horizons in our understanding of the environmental and anthropological factors controlling microbial communities in these important ecosystems.
The Microbial Nitrogen Cycle
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Author : Bess B Ward
language : en
Publisher: Frontiers Media SA
Release Date : 2015-01-17
The Microbial Nitrogen Cycle written by Bess B Ward and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-01-17 with Microbial ecology categories.
Nitrogen is an essential element in biological systems, and one that often limits production in both aquatic and terrestrial systems. Due to its requirement in biological macromolecules, its acquisition and cycling have the potential to structure microbial communities, as well as to control productivity on the ecosystem scale. In addition, its versatile redox chemistry is the basis of complex biogeochemical transformations that control the inventory of fixed nitrogen, both in local environments and over geological time. Although many of the pathways in the microbial nitrogen cycle were described more than a century ago, additional fundamental pathways have been discovered only recently. These findings imply that we still have much to learn about the microbial nitrogen cycle, the organisms responsible for it, and their interactions in natural and human environments. Progress in nitrogen cycle research has been facilitated by recent rapid technological advances, especially in genomics and isotopic approaches. In this Research Topic, we reviewed the leading edge of nitrogen cycle research based on these approaches, as well as by exploring microbial processes in modern ecosystems.
Global Biogeochemical Cycles In The Climate System
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Author : Ernst-Detlef Schulze
language : en
Publisher: Elsevier
Release Date : 2001-08-10
Global Biogeochemical Cycles In The Climate System written by Ernst-Detlef Schulze and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-08-10 with Science categories.
The interactions of biogeochemical cycles influence and maintain our climate system. Land use and fossil fuel emissions are currently impacting the biogeochemical cycles of carbon, nitrogen and sulfur on land, in the atmosphere, and in the oceans. This edited volume brings together 27 scholarly contributions on the state of our knowledge of earth system interactions among the oceans, land, and atmosphere. A unique feature of this treatment is the focus on the paleoclimatic and paleobiotic context for investigating these complex interrelationships. * Eight-page colour insert to highlight the latest research * A unique feature of this treatment is the focus on the paleoclimatic context for investigating these complex interrelationships.
Microbial Life In The Cryosphere And Its Feedback On Global Change
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Author : Susanne Liebner
language : en
Publisher: Walter de Gruyter GmbH & Co KG
Release Date : 2021-01-18
Microbial Life In The Cryosphere And Its Feedback On Global Change written by Susanne Liebner and has been published by Walter de Gruyter GmbH & Co KG this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-01-18 with Science categories.
The cryosphere stands for environments where water appears in a frozen form. It includes permafrost, glaciers, ice sheets, and sea ice and is currently more affected by Global Change than most other regions of the Earth. In the cryosphere, limited water availability and subzero temperatures cause extreme conditions for all kind of life which microorganisms can cope with extremely well. The cryosphere’s microbiota displays an unexpectedly large genetic potential, and taxonomic as well as functional diversity which, however, we still only begin to map. Also, microbial communities influence reaction patterns of the cryosphere towards Global Change. Altered patterns of seasonal temperature fluctuations and precipitation are expected in the Arctic and will affect the microbial turnover of soil organic matter (SOM). Activation of nutrients by thawing and increased active layer thickness as well as erosion renders nutrient stocks accessible to microbial activities. Also, glacier melt and retreat stimulate microbial life in turn influencing albedo and surface temperatures. In this context, the functional resilience of microbial communities in the cryosphere is of major interest. Particularly important is the ability of microorganisms and microbial communities to respond to changes in their surroundings by intracellular regulation and population shifts within functional niches, respectively. Research on microbial life exposed to permanent freeze or seasonal freeze-thaw cycles has led to astonishing findings about microbial versatility, adaptation, and diversity. Microorganisms thrive in cold habitats and new sequencing techniques have produced large amounts of genomic, metagenomic, and metatranscriptomic data that allow insights into the fascinating microbial ecology and physiology at low and subzero temperatures. Moreover, some of the frozen ecosystems such as permafrost constitute major global carbon and nitrogen storages, but can also act as sources of the greenhouse gases methane and nitrous oxide. In this book we summarize state of the art knowledge on whether environmental changes are met by a flexible microbial community retaining its function, or if the altered conditions also render the community in a state of altered properties that affect the Earth’s element cycles and climate. This book brings together research on the cryosphere’s microbiota including permafrost, glaciers, and sea ice in Arctic and Antarctic regions. Different spatial scales and levels of complexity are considered, spanning from ecosystem level to pure culture studies of model microbes in the laboratory. It aims to attract a wide range of parties with interest in the effect of climate change and/or low temperatures on microbial nutrient cycling and physiology.