Methane Emission from Tropical Wetlands PDF Download
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Author: S.K. Hamilton
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Book Description
Measurements of the composition of sediment gas bubbles and of methane emission from emergent plants in the Pantanal wetland of Brazil indicate that savanna floodplains with inundation depths > 1 m have high rates of methane emission by ebullition compared with emission by rooted emergent plants. High rates of methane production and ebullition result in high concentrations of methane in sediment bubbles, which often contained > 50% methane by volume at the deeper ( > 1m) sampling sites. The rooted emergent plants typical of the deeper waters had low rates of methane emission (0.0-0.2 mg/d) compared to species typical of inundation depths 1m (1.6-7.5 mg/d). The high rates of ebullition in the deeper vegetated waters of the Pantanal contrast with results from shallower rice fields and temperate wetlands,in which plant-mediated transport appears to be the dominant mode of methane emission. The elongated stems of rooted emergent plants tend to predominate in tropical wetlands with inundation depths 1m are evidently much less effective in the transport of methane from the sediments to the atmosphere than are the emergent stems of plants that grow in shallower waters.
Author: S.K. Hamilton
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Book Description
Measurements of the composition of sediment gas bubbles and of methane emission from emergent plants in the Pantanal wetland of Brazil indicate that savanna floodplains with inundation depths > 1 m have high rates of methane emission by ebullition compared with emission by rooted emergent plants. High rates of methane production and ebullition result in high concentrations of methane in sediment bubbles, which often contained > 50% methane by volume at the deeper ( > 1m) sampling sites. The rooted emergent plants typical of the deeper waters had low rates of methane emission (0.0-0.2 mg/d) compared to species typical of inundation depths 1m (1.6-7.5 mg/d). The high rates of ebullition in the deeper vegetated waters of the Pantanal contrast with results from shallower rice fields and temperate wetlands,in which plant-mediated transport appears to be the dominant mode of methane emission. The elongated stems of rooted emergent plants tend to predominate in tropical wetlands with inundation depths 1m are evidently much less effective in the transport of methane from the sediments to the atmosphere than are the emergent stems of plants that grow in shallower waters.
Author: Ken W. Krauss
Publisher: John Wiley & Sons
ISBN: 111963928X
Category : Science
Languages : en
Pages : 484
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Book Description
Explores how the management of wetlands can influence carbon storage and fluxes. Wetlands are vital natural assets, including their ability to take-up atmospheric carbon and restrict subsequent carbon loss to facilitate long-term storage. They can be deliberately managed to provide a natural solution to mitigate climate change, as well as to help offset direct losses of wetlands from various land-use changes and natural drivers. Wetland Carbon and Environmental Management presents a collection of wetland research studies from around the world to demonstrate how environmental management can improve carbon sequestration while enhancing wetland health and function. Volume highlights include: Overview of carbon storage in the landscape Introduction to wetland management practices Comparisons of natural, managed, and converted wetlands Impact of wetland management on carbon storage or loss Techniques for scientific assessment of wetland carbon processes Case studies covering tropical, coastal, inland, and northern wetlands Primer for carbon offset trading programs and how wetlands might contribute The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity.Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
Author: R. H. Hughes
Publisher: IUCN
ISBN: 9782880329495
Category : Nature
Languages : en
Pages : 866
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Book Description
A directory of Afrotropical wetlands of international importance. Contents -Region 1: North West Africa, Region 2: North East Africa, Region 3: West Africa, Region 4: Central Africa, Region 5: Southern Africa, Region 6: Madagascar.
Author: Huai Chen
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110385619
Category : Science
Languages : en
Pages : 341
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Book Description
Methane Emissions from Unique Wetlands in China: Case Studies, Meta Analyses and Modelling is a landmark volume in the development of studies about methane emission from wetlands. Although there are books about methane emissions from rice paddies, natural wetlands and reservoirs, this book is the first one that provides information about methane emission from wetlands in China. Moreover, the book picks up very unique wetlands, alpine wetlands on the eastern edge of the Qinghai-Tibetan Plateau, and Three Gorges Reservoir (the world's largest hydroelectric reservoir) as cases to study methane emissions. It reviews and meta-analyses methane emissions from rice paddies, natural wetlands and lakes in China during the past twenty years. Furthermore, this book acts as bridge to connect microbial ecology and modelling: it both describes methane-producing bacteria dynamics and methane emission modelling.
Author: Elaine Matthews
Publisher:
ISBN:
Category : Methane
Languages : en
Pages : 26
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Book Description
Author: John P. Rafferty Associate Editor, Earth Sciences
Publisher: The Rosen Publishing Group, Inc
ISBN: 1615303200
Category : Juvenile Nonfiction
Languages : en
Pages : 255
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Book Description
Presents an introduction to lakes and wetlands, examines their physical properties, and profiles some of the major lakes in the world, including the Great Lakes, Lake Victoria, and Lake Chad.
Author: M. O. Andreae
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 376
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Book Description
Microbiological basic of NO and N2O production and consumption in soil; Factors controlling NOx emissions from soils; Control of methane production in terrestrial ecosystems; Biological sinks of methane; What regulates production and consumption of trace gases in ecosystems: biology or physicochemistry?; Regional extrapolation of trace gas flux based on soil and ecosystems; Regional extrapolation: Vegetation-atmosphere approach; Global-scale extrapolation: a critical assessment; Aircraft-based measurements of trace gas fluxes; Extrapolation of flux measurements to regional and global scales; Chamber and isotop techniques; Micrometeorological techniques for the measurement of trace gas exchange; Methane flux measurements: methods and results; Fluxes of NOx abovesoil and vegetation; What are the relative roles of biological production, micrometeorology, and photochemistry in controlling the flux of trace gases between terrestrial ecosystems and the atmosphere?; Atmospheric deposition and nutrient cycling; Global climate and trace gas composition: from atmospheric history to the century; Experimental design for studying atmosphere interactions; Trace gas exchange and phsical climate: Critical interactions; Research priorities for studies on trace gas exchange.
Author: Jack Rieley
Publisher: Earthscan / James & James
ISBN: 9781849713221
Category : Science
Languages : en
Pages : 300
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Book Description
Tropical peatlands are found mostly in South East Asia, but also in Africa and in Central and South America. They and peat-swamp forests store large amounts of carbon and their destruction, particularly through the development of plantations for oil palm and other forms of agriculture, releases large quantities of greenhouse gases which contribute to climate change. They are also complex and vulnerable ecosystems, home to great biodiversity and a number of endangered species such as the orang utan.The aim of this book is to introduce this little known but important and vulnerable ecosystem in a way that explains its long standing interaction with the global carbon cycle and how it is being destroyed by deforestation and inappropriate development. The authors describe the origin and formation of peat in the tropics, its current location, extent and amount of carbon stored in it, its biodiversity and natural resource functions and key ecological functions and processes. Appropriate hydrology is the key to the development and maintenance of peatlands and the unique aspects of tropical peatland water supply and management are also explored. In the same vein the nutrient dynamics and budgets of this ecosystem are explained in order to show how complex habitats can be maintained mainly by rainwater containing very low concentrations of essential chemical elements. Past and present impacts on tropical peatlands in SE Asia are discussed and the need for restoration and wise use highlighted. Finally, projections are made about the future of this ecosystem as a result of continuing human impacts and climate change.
Author: Amanda Marie Nahlik
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Abstract: Wetlands are important ecosystems in our landscape because of the broad array of ecosystem services they provide to humans and the environment. Wetlands have unique biotic and abiotic chemical interactions among soil, water, and vegetation that, combined with long retention times that are characteristic of wetlands, allow for nutrients, metals, and organic pollutants to be removed from the water column, resulting in cleaner water. The same characteristics that make wetlands so efficient at improving water quality also provide anaerobic conditions and organic substrate that is optimal for methanogenesis, the microbial production of the greenhouse gas (GHG) methane (CH4). The objective of this dissertation is to investigate the biogeochemistry, specifically water quality improvement and CH4 emissions, of natural and created wetlands in tropical and temperate climates.
Author: John E. Rogers
Publisher: ASM Press
ISBN:
Category : Science
Languages : en
Pages : 316
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Book Description
This volume reviews current data on the relationship between microbial processes and the synthesis and degradation of methane, nitrogen oxides and halomethanes in the environment.
