Below Ground Carbon Dynamics as a Function of Climate Variability in Undisturbed Soils of a Neotropical Rain Forest PDF Download

Author: Luitgard Cäcilia Schwendenmann
Publisher:
ISBN:
Category :
Languages : en
Pages : 133

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Author: Walter Carson
Publisher: John Wiley & Sons
ISBN: 1444356267
Category : Science
Languages : en
Pages : 686

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Book Description
Historically, tropical ecology has been a science often content with descriptive and demographic approaches, which is understandable given the difficulty of studying these ecosystems and the need for basic demographic information. Nonetheless, over the last several years, tropical ecologists have begun to test more sophisticated ecological theory and are now beginning to address a broad array of questions that are of particular importance to tropical systems, and ecology in general. Why are there are so many species in tropical forests and what mechanisms are responsible for the maintenance of that vast species diversity? What factors control species coexistence? Are there common patterns of species abundance and distribution across broad geographic scales? What is the role of trophic interactions in these complex ecosystems? How can these fragile ecosystems be conserved? Containing contributions from some of the world’s leading tropical ecologists, Tropical Forest Community Ecology provides a summary of the key issues in the discipline of tropical ecology: Includes contributions from some of the world’s leading tropical ecologists Covers patterns of species distribution, the maintenance of species diversity, the community ecology of tropical animals, forest regeneration and conservation of tropical ecosystems

Author: Werner L. Kutsch
Publisher: Cambridge University Press
ISBN: 1139483161
Category : Technology & Engineering
Languages : en
Pages : 301

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Book Description
Carbon stored in soils represents the largest terrestrial carbon pool and factors affecting this will be vital in the understanding of future atmospheric CO2 concentrations. This book provides an integrated view on measuring and modeling soil carbon dynamics. Based on a broad range of in-depth contributions by leading scientists it gives an overview of current research concepts, developments and outlooks and introduces cutting-edge methodologies, ranging from questions of appropriate measurement design to the potential application of stable isotopes and molecular tools. It includes a standardised soil CO2 efflux protocol, aimed at data consistency and inter-site comparability and thus underpins a regional and global understanding of soil carbon dynamics. This book provides an important reference work for students and scientists interested in many aspects of soil ecology and biogeochemical cycles, policy makers, carbon traders and others concerned with the global carbon cycle.

Author: Emily Judith Díaz Vallejo
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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This dissertation explores the influence of land use changes on soil dynamics and functionality in tropical regions. Specifically, it addresses three main research questions. Firstly, it examines the global impact of land use changes on microbial biomass, abundance, and traits in tropical regions while identifying knowledge gaps and areas for further research in tropical microbial ecology. Secondly, it investigates how tropical secondary forest succession affects microbial function in diverse soil environments and explores the connection between changes in microbial function and soil carbon variability across different successional stages. Lastly, it aims to define a benchmark tool for soil carbon assessment in a variety of tropical climates, land use practices, and soil types, with potential applications for farmers, land managers, soil researchers, policymakers, and individuals interested in soil health assessment. The research findings underscore the significant effects of land use conversions on soil microbial communities and their associated ecosystem functions. To better understand the global-scale response of tropical regions to environmental changes, a comprehensive understanding of the diverse climates, vegetation, management practices, and soil conditions in these regions is essential. Additionally, this study examines the dynamics of microbial communities during forest succession and highlights the urgent need for further research to comprehend microbial functionalities in disturbed tropical forest soils. Furthermore, it emphasizes the importance of establishing benchmarks for assessing soil carbon in tropical soils, taking into account the impacts of land use change, and developing guidelines or protocols accordingly. This dissertation identifies knowledge gaps and suggests future research directions, including the exploration of a broader range of soil types, investigations into dry systems, examination of specific soil characteristics, and the incorporation of advanced molecular techniques. The ultimate goal of this work is to contribute to the understanding of soil dynamics, provide insights for sustainable soil management, and offer strategies for climate change mitigation in tropical regions.

Author: Rahul Datta
Publisher: Springer Nature
ISBN: 9813367652
Category : Technology & Engineering
Languages : en
Pages : 336

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Book Description
Carbon stabilization involves to capturing carbon from the atmosphere and fix it in the forms soil organic carbon stock for a long period of time, it will be present to escape as a greenhouse gas in the form of carbon dioxide. Soil carbon storage is an important ecosystem service, resulting from interactions of several ecological processes. This process is primarily mediated by plants through photosynthesis, with carbon stored in the form of soil organic carbon. Soil carbon levels have reduced over decades of conversion of pristine ecosystems into agriculture landscape, which now offers the opportunity to store carbon from air into the soil. Carbon stabilization into the agricultural soils is a novel approach of research and offers promising reduction in the atmospheric carbon dioxide levels. This book brings together all aspects of soil carbon sequestration and stabilization, with a special focus on diversity of microorganisms and management practices of soil in agricultural systems. It discusses the role of ecosystem functioning, recent and future prospects, soil microbial ecological studies, rhizosphere microflora, and organic matter in soil carbon stabilization. It also explores carbon transformation in soil, biological management and its genetics, microbial transformation of soil carbon, plant growth promoting rhizobacteria (PGPRs), and their role in sustainable agriculture. The book offers a spectrum of ideas of new technological inventions and fundamentals of soil sustainability. It will be suitable for teachers, researchers, and policymakers, undergraduate and graduate students of soil science, soil microbiology, agronomy, ecology, and environmental sciences

Author: Gregory P. Zogg
Publisher:
ISBN:
Category :
Languages : en
Pages : 182

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Author: Amanda Cantu Swanson
Publisher:
ISBN: 9780355471991
Category : Desert ecology
Languages : en
Pages : 133

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Book Description
Disturbances, natural or anthropogenic, alter ecosystem functioning by changing the biotic composition, biogeochemical cycling, or the physical structure of an environment. As carbon dioxide is a major contributor to global climate change, disturbances to different components of the carbon (C) cycle may further affect atmospheric CO2 concentrations. Soils store vast amounts of C and have the potential to sequester or release CO2. Two of the most extreme ecosystems, deserts and tropical forests, play an important role in the global C cycle, storing C in soils and vegetative biomass. The overarching objective of this dissertation is to quantify changes in soil C cycling after a disturbance in desert and tropical ecosystems. My first chapter addressed how soil inorganic C cycling changes with vegetation removal in a Colorado desert ecosystem. Through manipulative field and lab experiments, I explored changes in C pools after vegetation removal by measuring changes in the isotopic composition of C pools and effluxed CO2. I found that there were significant changes in C cycling after the vegetation was removed; there were fewer newer C inputs and that a greater proportion of CO2 comes soil inorganic C in unvegetated soils. For my second chapter, I looked at soil C recovery with revegetation of Larrea tridentata, finding that there was some recovery of the water extractable organic and microbial biomass C pools. Although the isotopic composition of soil carbon pools did not change with restoration, I also found some seasonal patterns such that changes in soil C pools may have been linked to timing of shrub and microbial activity. My third chapter addressed spatial differences in root and hyphal dynamics and production associated with soil disturbances created by leaf cutter ants (LCA). I collected continuous soil data and automated minirhizotron images to assess belowground dynamics, finding that LCA altered their soil environment and increase root and hyphal production in LCA nests. Overall, my dissertation work demonstrates that disturbances impact various components of the C cycle and that changes to C cycling processes may change how relevant those processes are at different temporal and spatial scales.

Author: Alan Ronald Townsend
Publisher:
ISBN:
Category :
Languages : en
Pages : 220

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Author: Robert Jandl
Publisher: MDPI
ISBN: 3038971782
Category : Science
Languages : en
Pages : 188

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This book is a printed edition of the Special Issue "Forest Soil Respiration under Climate Changing" that was published in Forests

Author: Xiaoming Kang
Publisher: Frontiers Media SA
ISBN: 2832547753
Category : Science
Languages : en
Pages : 320

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Book Description
Forest and grassland ecosystems are the most important carbon sinks in terrestrial ecosystems. They can maintain or enhance carbon stocks and sinks in biomass, and play vital roles in mitigating climate change. China is taking action to achieve its carbon peak and carbon-neutral targets. Climate change, particularly the increase in the frequency, severity, and extent of drought, will affect the stability of the forest and grassland. How forests and grassland mitigate and adapt to climate change is still a challenge. Exploring the response of the forest and grassland to extreme climate events contributes to improving vegetation quality and enhancing the ability to respond to climate change.