Microbial Processes And Carbon Cycling In The Ocean

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Microbial Processes and Carbon Cycling in the Ocean

Author : Nianzhi Jiao
Publisher : Nova Science Publishers
ISBN 13 :
Total Pages : 108 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Microbial Processes and Carbon Cycling in the Ocean by : Nianzhi Jiao

Download or read book Microbial Processes and Carbon Cycling in the Ocean written by Nianzhi Jiao and published by Nova Science Publishers. This book was released on 2008 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses recent progress in microbial oceanography with emphasis on microbial processes and mechanisms related to carbon cycling in the ocean, including the newly recognised microbial light utilisation in the surface ocean, archaeal carbon fixation and methane oxidation in the deep ocean and sediment, as well as lysis of host organisms by viroplankton and its influence on carbon cycling in the water column. Key functional groups of microorganisms include Prochlorococcus which possess unique photosynthesis pigments, the divinyl chlrophylls; Aerobic anoxygenic phototrophic bacteria (AAPB) which possess bacterial chlorophyll a; Rhodopsin containing proteobacteria (PR); Nonthermophilic crenarchaeota, which use ammonia as a major energy source for autotrophic growth; and the ANME groups of archaea which oxidize methane for energy. Recent findings have challenged to the conventional concepts and theories. To face these challenges the authors propose novel models based on an understanding of newly discovered microbial processes. For carbon cycling in the surface ocean, a conceptual model is proposed based on light bio-utilisation where bacteriochlorophyll a induced anoxygenic phototrophy and proteiorhodopsin based proton pump are included.

Biogeochemistry of Marine Dissolved Organic Matter

Author : Dennis A. Hansell
Publisher : Academic Press
ISBN 13 : 0124071538
Total Pages : 712 pages
Book Rating : 4.1/5 (24 download)

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Book Synopsis Biogeochemistry of Marine Dissolved Organic Matter by : Dennis A. Hansell

Download or read book Biogeochemistry of Marine Dissolved Organic Matter written by Dennis A. Hansell and published by Academic Press. This book was released on 2014-10-02 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine dissolved organic matter (DOM) is a complex mixture of molecules found throughout the world's oceans. It plays a key role in the export, distribution, and sequestration of carbon in the oceanic water column, posited to be a source of atmospheric climate regulation. Biogeochemistry of Marine Dissolved Organic Matter, Second Edition, focuses on the chemical constituents of DOM and its biogeochemical, biological, and ecological significance in the global ocean, and provides a single, unique source for the references, information, and informed judgments of the community of marine biogeochemists. Presented by some of the world's leading scientists, this revised edition reports on the major advances in this area and includes new chapters covering the role of DOM in ancient ocean carbon cycles, the long term stability of marine DOM, the biophysical dynamics of DOM, fluvial DOM qualities and fate, and the Mediterranean Sea. Biogeochemistry of Marine Dissolved Organic Matter, Second Edition, is an extremely useful resource that helps people interested in the largest pool of active carbon on the planet (DOC) get a firm grounding on the general paradigms and many of the relevant references on this topic. Features up-to-date knowledge of DOM, including five new chapters The only published work to synthesize recent research on dissolved organic carbon in the Mediterranean Sea Includes chapters that address inputs from freshwater terrestrial DOM

The Microbial Fate of Carbon in High-latitude Seas

Author :
Publisher :
ISBN 13 :
Total Pages : 167 pages
Book Rating : 4.:/5 (873 download)

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Book Synopsis The Microbial Fate of Carbon in High-latitude Seas by :

Download or read book The Microbial Fate of Carbon in High-latitude Seas written by and published by . This book was released on 1996 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation examines pelagic microbial processes in high-latitude seas, how they affect regional and global carbon cycling, and how they might respond to hypothesized changes in climate. Critical to these interests is the effect of cold temperature on bacterial activity. Also important is the extent to which marine biological processes in general impact the inorganic carbon cycle. The study area is the Northeast Water (NEW) Polynya, a seasonally-recurrent opening in the permanent ice situated over the northeastern Greenland continental shelf. This work was part of an international, multi-disciplinary research project studying carbon cycling in the coastal Arctic. The first chapter describes a simple model which links a complex marine food web to a simplified ocean and atmosphere. The second chapter investigates the inorganic carbon inventory of the summertime NEW Polynya surface waters to establish the effect of biological processes on the air-sea pCO2 gradient. The third and fourth chapters use a kinetic approach to examine microbial activities in the NEW Polynya as a function of temperature and dissolved organic substrate concentration, testing the so-called Pomeroy hypothesis that microbial activity is disproportionately reduced at low environmental temperatures owing to increased organic substrate requirements. Together, the suite of data collected on microbial activities, cell size, and grazing pressure suggest how unique survival strategies adopted by an active population of high-latitude bacteria may contribute to, rather than detract from, an efficient biological carbon pump.

Microbial Ecology of the Oceans

Author : Josep M. Gasol
Publisher : John Wiley & Sons
ISBN 13 : 1119107202
Total Pages : 663 pages
Book Rating : 4.1/5 (191 download)

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Book Synopsis Microbial Ecology of the Oceans by : Josep M. Gasol

Download or read book Microbial Ecology of the Oceans written by Josep M. Gasol and published by John Wiley & Sons. This book was released on 2018-01-31 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: The newly revised and updated third edition of the bestselling book on microbial ecology in the oceans The third edition of Microbial Ecology of the Oceans features new topics, as well as different approaches to subjects dealt with in previous editions. The book starts out with a general introduction to the changes in the field, as well as looking at the prospects for the coming years. Chapters cover ecology, diversity, and function of microbes, and of microbial genes in the ocean. The biology and ecology of some model organisms, and how we can model the whole of the marine microbes, are dealt with, and some of the trophic roles that have changed in the last years are discussed. Finally, the role of microbes in the oceanic P cycle are presented. Microbial Ecology of the Oceans, Third Edition offers chapters on The Evolution of Microbial Ecology of the Ocean; Marine Microbial Diversity as Seen by High Throughput Sequencing; Ecological Significance of Microbial Trophic Mixing in the Oligotrophic Ocean; Metatranscritomics and Metaproteomics; Advances in Microbial Ecology from Model Marine Bacteria; Marine Microbes and Nonliving Organic Matter; Microbial Ecology and Biogeochemistry of Oxygen-Deficient Water Columns; The Ocean’s Microscale; Ecological Genomics of Marine Viruses; Microbial Physiological Ecology of The Marine Phosphorus Cycle; Phytoplankton Functional Types; and more. A new and updated edition of a key book in aquatic microbial ecology Includes widely used methodological approaches Fully describes the structure of the microbial ecosystem, discussing in particular the sources of carbon for microbial growth Offers theoretical interpretations of subtropical plankton biogeography Microbial Ecology of the Oceans is an ideal text for advanced undergraduates, beginning graduate students, and colleagues from other fields wishing to learn about microbes and the processes they mediate in marine systems.

Linking Microbial Metabolism and Organic Matter Cycling Through Metabolite Distributions in the Ocean

Author : Winifred M. Johnson (Ph. D.)
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.:/5 (971 download)

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Book Synopsis Linking Microbial Metabolism and Organic Matter Cycling Through Metabolite Distributions in the Ocean by : Winifred M. Johnson (Ph. D.)

Download or read book Linking Microbial Metabolism and Organic Matter Cycling Through Metabolite Distributions in the Ocean written by Winifred M. Johnson (Ph. D.) and published by . This book was released on 2017 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Key players in the marine carbon cycle are the ocean-dwelling microbes that fix, remineralize, and transform organic matter. Many of the small organic molecules in the marine carbon pool have not been well characterized and their roles in microbial physiology, ecological interactions, and carbon cycling remain largely unknown. In this dissertation metabolomics techniques were developed and used to profile and quantify a suite of metabolites in the field and in laboratory experiments. Experiments were run to study the way a specific metabolite can influence microbial metabolite output and potentially processing of organic matter. Specifically, the metabolic response of the heterotrophic marine bacterium, Ruegeria pomeroyi, to the algal metabolite dimethylsulfoniopropionate (DMSP) was analyzed using targeted and untargeted metabolomics. The manner in which DMSP causes R. pomeroyi to modify its biochemical pathways suggests anticipation by R. pomeroyi of phytoplankton-derived nutrients and higher microbial density. Targeted metabolomics was used to characterize the latitudinal and vertical distributions of particulate and dissolved metabolites in samples gathered along a transect in the Western Atlantic Ocean. The assembled dataset indicates that, while many metabolite distributions co-vary with biomass abundance, other metabolites show distributions that suggest abiotic, species specific, or metabolic controls on their variability. On sinking particles in the South Atlantic portion of the transect, metabolites possibly derived from degradation of organic matter increase and phytoplankton-derived metabolites decrease. This work highlights the role DMSP plays in the metabolic response of a bacterium to the environment and reveals unexpected ways metabolite abundances vary between ocean regions and are transformed on sinking particles. Further metabolomics studies of the global distributions and interactions of marine biomolecules promise to provide new insights into microbial processes and metabolite cycling.

Deep-Sea Food Chains and the Global Carbon Cycle

Author : G.T. Rowe
Publisher : Springer Science & Business Media
ISBN 13 : 9401124523
Total Pages : 403 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Deep-Sea Food Chains and the Global Carbon Cycle by : G.T. Rowe

Download or read book Deep-Sea Food Chains and the Global Carbon Cycle written by G.T. Rowe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon dioxide and other `greenhouse' gases are increasing in the atmosphere due to the burning of fossil fuels, the destruction of rain forests, etc., leading to predictions of a gradual global warming which will perturb the global biosphere. An important process which counters this trend toward potential climate change is the removal of carbon dioxide from the surface ocean by photosynthesis. This process packages carbon in phytoplankton which enter the food chain or sink into the deep sea. Their ultimate fate is a `rain' of organic debris out of the surface-mixed layer of the ocean. On a global scale, the mechanisms and overall rate of this process are poorly known. The authors of the 25 papers in this volume present their state-of-the-art approaches to quantifying the mechanisms by which the `rain' of biogenic debris nourishes deep ocean life. Prominent deep sea ecologists, geochemists and modelers address relationships between data and models of carbon fluxes and food chains in the deep ocean. An attempt is made to estimate the fate of carbon in the deep sea on a global scale by summing up the utilization of organic matter among all the populations of the abyssal biosphere. Comparisons are made between these ecological approaches and estimates of geochemical fluxes based on sediment trapping, one-dimensional geochemical models and horizontal (physical) input from continental margins. Planning interdisciplinary enterprises between geochemists and ecologists, including new field programs, are summarized in the final chapter. The summary includes a list of the important gaps in understanding which must be addressed before the role of the deep-sea biota in global-scale processes can be put in perspective.

The Ocean Carbon Cycle and Climate

Author : Mick Follows
Publisher : Springer Science & Business Media
ISBN 13 : 1402020872
Total Pages : 401 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis The Ocean Carbon Cycle and Climate by : Mick Follows

Download or read book The Ocean Carbon Cycle and Climate written by Mick Follows and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our desire to understand the global carbon cycle and its link to the climate system represents a huge challenge. These overarching questions have driven a great deal of scientific endeavour in recent years: What are the basic oceanic mechanisms which control the oceanic carbon reservoirs and the partitioning of carbon between ocean and atmosphere? How do these mechanisms depend on the state of the climate system and how does the carbon cycle feed back on climate? What is the current rate at which fossil fuel carbon dioxide is absorbed by the oceans and how might this change in the future? To begin to answer these questions we must first understand the distribution of carbon in the ocean, its partitioning between different ocean reservoirs (the "solubility" and "biological" pumps of carbon), the mechanisms controlling these reservoirs, and the relationship of the significant physical and biological processes to the physical environment. The recent surveys from the JGOFS and WOCE (Joint Global Ocean Flux Study and World Ocean Circulation Ex periment) programs have given us a first truly global survey of the physical and biogeochemical properties of the ocean. These new, high quality data provide the opportunity to better quantify the present oceans reservoirs of carbon and the changes due to fossil fuel burning. In addition, diverse process studies and time-series observations have clearly revealed the complexity of interactions between nutrient cycles, ecosystems, the carbon-cycle and the physical envi ronment.

Microbial Utilization and Transformation of Dissolved Organic Matter in Aquatic Environments - from Streams to the Deep Ocean

Author : Johanna Sjöstedt
Publisher : Frontiers Media SA
ISBN 13 : 2889711021
Total Pages : 255 pages
Book Rating : 4.8/5 (897 download)

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Book Synopsis Microbial Utilization and Transformation of Dissolved Organic Matter in Aquatic Environments - from Streams to the Deep Ocean by : Johanna Sjöstedt

Download or read book Microbial Utilization and Transformation of Dissolved Organic Matter in Aquatic Environments - from Streams to the Deep Ocean written by Johanna Sjöstedt and published by Frontiers Media SA. This book was released on 2021-07-28 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Cycling of DOC and DON by Novel Heterotrophic and Photoheterotrophic Bacteria in the Ocean

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (953 download)

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Book Synopsis Cycling of DOC and DON by Novel Heterotrophic and Photoheterotrophic Bacteria in the Ocean by :

Download or read book Cycling of DOC and DON by Novel Heterotrophic and Photoheterotrophic Bacteria in the Ocean written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The flux of dissolved organic matter (DOM) through aquatic bacterial communities is a major process in carbon cycling in the oceans and other aquatic systems. Our work addressed the general hypothesis that the phylogenetic make-up of bacterial communities and the abundances of key types of bacteria are important factors influencing the processing of DOM in aquatic ecosystems. Since most bacteria are not easily cultivated, the phylogenetic diversity of these microbes has to be assessed using culture-independent approaches. Even if the relevant bacteria were cultivated, their activity in the lab would likely differ from that under environmental conditions. This project found variation in DOM uptake by the major bacterial groups found in coastal waters. In brief, the data suggest substantial differences among groups in the use of high and molecular weight DOM components. It also made key discoveries about the role of light in affecting this uptake especially by cyanobacteria. In the North Atlantic Ocean, for example, over half of the light-stimulated uptake was by the coccoid cyanobacterium, Prochlorococcus, with the remaining uptake due to Synechococcus and other photoheterotrophic bacteria. The project also examined in detail the degradation of one organic matter component, chitin, which is often said to be the second most abundant compound in the biosphere. The findings of this project contribute to our understanding of DOM fluxes and microbial dynamics supported by those fluxes. It is possible that these findings will lead to improvements in models of the carbon cycle that have compartments for dissolved organic carbon (DOC), the largest pool of organic carbon in the oceans.

Hydrothermal Processes at Seafloor Spreading Centers

Author : Peter A. Rona
Publisher : Springer Science & Business Media
ISBN 13 : 1489904026
Total Pages : 802 pages
Book Rating : 4.4/5 (899 download)

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Book Synopsis Hydrothermal Processes at Seafloor Spreading Centers by : Peter A. Rona

Download or read book Hydrothermal Processes at Seafloor Spreading Centers written by Peter A. Rona and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past ten years, evidence has developed to indicate that seawater convects through oceanic crust driven by heat derived from creation of lithosphere at the Earth-encircling oceanic ridge-rift system of seafloor spreading centers. This has stimulated multiple lines of research with profound implications for the earth and life sciences. The lines of research comprise the role of hydrothermal convection at seafloor spreading centers in the Earth's thermal regime by cooling of newly formed litho sphere (oceanic crust and upper mantle); in global geochemical cycles and mass balances of certain elements by chemical exchange between circulating seawater and basaltic rocks of oceanic crust; in the concentration of metallic mineral deposits by ore-forming processes; and in adaptation of biological communities based on a previously unrecognized form of chemosynthesis. The first work shop devoted to interdisciplinary consideration of this field was organized by a committee consisting of the co-editors of this volume under the auspices of a NATO Advanced Research Institute (ARI) held 5-8 April 1982 at the Department of Earth Sciences of Cambridge University in England. This volume is a product of that workshop. The papers were written by members of a pioneering research community of marine geologists, geophysicists, geochemists and biologists whose work is at the stage of initial description and interpretation of hydrothermal and associated phenomena at seafloor spreading centers.

Climate Change and the Oceanic Carbon Cycle

Author : Isabel Ferrera
Publisher : CRC Press
ISBN 13 : 1351800310
Total Pages : 392 pages
Book Rating : 4.3/5 (518 download)

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Book Synopsis Climate Change and the Oceanic Carbon Cycle by : Isabel Ferrera

Download or read book Climate Change and the Oceanic Carbon Cycle written by Isabel Ferrera and published by CRC Press. This book was released on 2017-01-12 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This title includes a number of Open Access chapters. This valuable compendium provides an overview of the variables and consequences of oceanic carbon cycling in the context of climate change. The chapters highlight the importance of marine plankton in carbon processing as well as the effects of rising CO2 and temperature in their functioning. Marine ecosystems are being increasingly threatened by growing human pressures, including climate change. Understanding the consequences that climate change may have is crucial to predict the future of our oceans. Rising temperatures and ocean acidification may profoundly alter the mode of matter and energy transformation in marine ecosystems, which could have irreversible consequences for our planet on ecological timescales. For that reason, the scientific community has engaged in the grand challenge of studying the variables and consequences of oceanic carbon cycling in the context of climate change, which has emerged as a relevant field of science. The book is broken into four sections: Understanding the Importance of Ocean Biogeochemistry Quantifying Oceanic Carbon Variables Phytoplankton and Oceanic Carbon Cycle Ocean Acidification Edited by a researcher with many years of experience and with contributions from scientists from around the world, this volume explores the most important topics on climate change and oceanic carbon cycling.

Acquisition, Degradation, and Cycling of Organic Matter Within Sea-ice Brines by Bacteria and Their Viruses

Author : Gordon Maxwell Showalter
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (124 download)

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Book Synopsis Acquisition, Degradation, and Cycling of Organic Matter Within Sea-ice Brines by Bacteria and Their Viruses by : Gordon Maxwell Showalter

Download or read book Acquisition, Degradation, and Cycling of Organic Matter Within Sea-ice Brines by Bacteria and Their Viruses written by Gordon Maxwell Showalter and published by . This book was released on 2020 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine dissolved organic carbon (DOC) is a major component of the global carbon pool, and thus can have significant effects on global carbon cycling. Within the oceans, DOC is largely regulated by microbial communities, which can serve as both a source and sink of organic carbon. Microbial controls on DOC cycling within sea ice are especially relevant to global processes, as sea ice can act as an inhibitor of exchange between the ocean and the atmosphere while also affecting carbon export to the deep sea. However, how sea-ice communities influence DOC cycling, especially in very cold conditions of winter sea ice, is poorly understood. This dissertation explores how bacterial communities, which dominate winter sea ice, may influence DOC cycling. Chapter 1 presents an introduction of sea-ice microbial communities in the low-temperature, high salinity conditions which characterize sea-ice brines. How bacteria within brines swim in response to temperature, salinity, and chemical gradients in sea ice is presented in Chapter 2, which demonstrates a low-temperature record for directed bacterial swimming and suggests explanations for how bacteria position themselves within brines to access DOC. However, most DOC within the marine environment is too large for bacterial uptake, necessitating degradation by enzymes. Chapter 3 demonstrates bacterial extracellular enzyme activity both in a laboratory setting and in situ, showing growth-dependent enzyme activity down to -8°C and up to 142 ppt salts and across a freeze-thaw cycle within sea ice and sea-surface microlayer samples. Finally, Chapter 4 presents a model of bacterially and virally mediated DOC cycling. This model uses simple differential equations, explained further in Appendix 1, to probe the potential existence of a viral shunt within sea-ice brines by demonstrating the role of bacteriophage in population dynamics of a theoretical brine, suggesting low viral production, high host-specificity, and virally-driven DOC cycling may be common within this environment. The results of this dissertation have implications for the understanding of DOC within polar seas and demonstrate the potential for active DOC cycling mediated by bacteria and their viruses within winter sea ice, which serves as an analog for very cold ice elsewhere.

Marine Carbon Biogeochemistry

Author : Jack J. Middelburg
Publisher : Springer
ISBN 13 : 3030108228
Total Pages : 126 pages
Book Rating : 4.0/5 (31 download)

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Book Synopsis Marine Carbon Biogeochemistry by : Jack J. Middelburg

Download or read book Marine Carbon Biogeochemistry written by Jack J. Middelburg and published by Springer. This book was released on 2019-01-25 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book discusses biogeochemical processes relevant to carbon and aims to provide readers, graduate students and researchers, with insight into the functioning of marine ecosystems. A carbon centric approach has been adopted, but other elements are included where relevant or needed. The book focuses on concepts and quantitative understanding of primary production, organic matter mineralization and sediment biogeochemistry. The impact of biogeochemical processes on inorganic carbon dynamics and organic matter transformation are also discussed.

Marine Microbiome and Biogeochemical Cycles in Marine Productive Areas

Author : Alejandro A. Murillo
Publisher : Frontiers Media SA
ISBN 13 : 2889632768
Total Pages : 179 pages
Book Rating : 4.8/5 (896 download)

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Book Synopsis Marine Microbiome and Biogeochemical Cycles in Marine Productive Areas by : Alejandro A. Murillo

Download or read book Marine Microbiome and Biogeochemical Cycles in Marine Productive Areas written by Alejandro A. Murillo and published by Frontiers Media SA. This book was released on 2020-01-16 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Marine Microbiology

Author : Colin Munn
Publisher : CRC Press
ISBN 13 : 0429592361
Total Pages : 437 pages
Book Rating : 4.4/5 (295 download)

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Book Synopsis Marine Microbiology by : Colin Munn

Download or read book Marine Microbiology written by Colin Munn and published by CRC Press. This book was released on 2019-11-26 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of this bestselling text has been rigorously updated to reflect major new discoveries and concepts since 2011, especially progress due to extensive application of high-throughput sequencing, single cell genomics and analysis of large datasets. Significant advances in understanding the diversity and evolution of bacteria, archaea, fungi, protists, and viruses are discussed and their importance in marine processes is explored in detail. Now in full colour throughout, all chapters have been significantly expanded, with many new diagrams, illustrations and boxes to aid students’ interest and understanding. Novel pedagogy is designed to encourage students to explore current high-profile research topics. Examples include the impacts of rising CO2 levels on microbial community structure and ocean processes, interactions of microbes with plastic pollution, symbiotic interactions, and emerging diseases of marine life. This is the only textbook addressing such a broad range of topics in the specific area of marine microbiology, now a core topic within broader Marine Science degrees. A Companion Website provides additional online resources for instructors and students, including a summary of key concepts and terminology for each chapter, links to further resources, and flashcards to aid self-assessment.

The Changing Ocean Carbon Cycle

Author : Roger B. Hanson
Publisher : Cambridge University Press
ISBN 13 : 9780521656030
Total Pages : 540 pages
Book Rating : 4.6/5 (56 download)

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Book Synopsis The Changing Ocean Carbon Cycle by : Roger B. Hanson

Download or read book The Changing Ocean Carbon Cycle written by Roger B. Hanson and published by Cambridge University Press. This book was released on 2000-01-13 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world's oceans act as a reservoir, with the capacity to absorb and retain carbon dioxide. The air-sea exchange of carbon is driven by physico-chemical forces, photosynthesis, and respiration, and has an important influence on atmospheric composition. Variability in the ocean carbon cycle could therefore exert significant feedback effects during conditions of climate change. The Joint Global Ocean Flux Study (JGOFS) is the first multidisciplinary program to directly address the interactions among the biology, chemistry, and physics of marine systems, with emphasis on the transport and transformations of carbon within the ocean and across its boundaries. This unique volume, written by an international panel of scientists, provides a synthesis of JGOFS science and its achievements to date. The authoritative chapters will be of great interest to readers seeking a current overview of the role of ocean processes in Earth system science and their wider implications for climate change.

Biogeochemistry of Marine Dissolved Organic Matter

Author : Dennis A. Hansell
Publisher : Elsevier
ISBN 13 : 0080500110
Total Pages : 807 pages
Book Rating : 4.0/5 (85 download)

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Book Synopsis Biogeochemistry of Marine Dissolved Organic Matter by : Dennis A. Hansell

Download or read book Biogeochemistry of Marine Dissolved Organic Matter written by Dennis A. Hansell and published by Elsevier. This book was released on 2002-07-06 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in marine dissolved organic matter (DOM) is very high because it plays an important role in oceanic and global carbon cycling, which in turn impacts weather. Understanding the processes involved in the transformations of carbon, phosphorus, nitrogen, and other major elements in the oceans has been a primary goal of marine biogeochemists and oceanographers over the past decade.This book, in 16 chapters with over 170 figures and tables, reports on the major advances in this area by a distinguished group of international chemical and biological oceanographers. Additionally, it focuses on the role of DOM in elemental cycling - where the greatest informational need currently exists.Biological cycling of the major elements through DOM is assessed throughout, with particular emphasis on the role of marine microbes as active agents in the processing of this materialThe ocean science community's advances for inclusion of DOM in both ecosystem and global circulation models are evaluated