Linking Optical and Chemical Properties of Dissolved Organic Matter in Natural Waters

Linking Optical and Chemical Properties of Dissolved Organic Matter in Natural Waters PDF

Author: Christopher L. Osburn

Publisher: Frontiers Media SA

Published: 2017-01-17

Total Pages: 244

ISBN-13: 2889450813

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A substantial increase in the number of studies using the optical properties (absorbance and fluorescence) of dissolved organic matter (DOM) as a proxy for its chemical properties in estuaries and the coastal and open ocean has occurred during the last decade. We are making progress on finding the actual chemical compounds or phenomena responsible for DOM’s optical properties. Ultrahigh resolution mass spectrometry, in particular, has made important progress in making the key connections between optics and chemistry. But serious questions remain and the last major special issue on DOM optics and chemistry occurred nearly 10 years ago. Controversies remain from the non-specific optical properties of DOM that are not linked to discrete sources, and sometimes provide conflicting information. The use of optics, which is relatively easier to employ in synoptic and high resolution sampling to determine chemistry, is a critical connection to make and can lead to major advances in our understanding of organic matter cycling in all aquatic ecosystems. The contentions and controversies raised by our poor understanding of the linkages between optics and chemistry of DOM are bottlenecks that need to be addressed and overcome.

Linking Optical and Chemical Properties of Dissolved Organic Matter in Natural Waters

Linking Optical and Chemical Properties of Dissolved Organic Matter in Natural Waters PDF

Author:

Publisher:

Published: 2017

Total Pages: 0

ISBN-13:

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A substantial increase in the number of studies using the optical properties (absorbance and fluorescence) of dissolved organic matter (DOM) as a proxy for its chemical properties in estuaries and the coastal and open ocean has occurred during the last decade. We are making progress on finding the actual chemical compounds or phenomena responsible for DOM's optical properties. Ultrahigh resolution mass spectrometry, in particular, has made important progress in making the key connections between optics and chemistry. But serious questions remain and the last major special issue on DOM optics and chemistry occurred nearly 10 years ago. Controversies remain from the non-specific optical properties of DOM that are not linked to discrete sources, and sometimes provide conflicting information. The use of optics, which is relatively easier to employ in synoptic and high resolution sampling to determine chemistry, is a critical connection to make and can lead to major advances in our understanding of organic matter cycling in all aquatic ecosystems. The contentions and controversies raised by our poor understanding of the linkages between optics and chemistry of DOM are bottlenecks that need to be addressed and overcome.

Biogeochemistry of Marine Dissolved Organic Matter

Biogeochemistry of Marine Dissolved Organic Matter PDF

Author: Dennis A. Hansell

Publisher: Academic Press

Published: 2014-10-02

Total Pages: 712

ISBN-13: 0124071538

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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

Aquatic Organic Matter Fluorescence

Aquatic Organic Matter Fluorescence PDF

Author: Paula G. Coble

Publisher: Cambridge University Press

Published: 2014-07-14

Total Pages: 407

ISBN-13: 0521764610

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A core text on principles, laboratory/field methodologies, and data interpretation for fluorescence applications in aquatic science, for advanced students and researchers.

Gulf of Mexico Origin, Waters, and Biota

Gulf of Mexico Origin, Waters, and Biota PDF

Author: Thomas S. Bianchi

Publisher: Texas A&M University Press

Published: 2019-10-03

Total Pages: 697

ISBN-13: 1623497752

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The fifth volume in the Harte Research Institute’s landmark scientific series on the Gulf of Mexico provides the first comprehensive study that covers the major core subjects of chemical oceanography in the Gulf. It synthesizes a tremendous amount of established research, together with the most recent information emerging from studies conducted during and after the Macondo Well oil spill that resulted from the explosion of the Deepwater Horizon drilling platform. Situated within the boundaries of a changing semi-tropical region, the Gulf of Mexico is a particularly important body to its bordering countries—the United States, Mexico, and Cuba—and directly influences the economies of these nations through shipping, oil and gas extraction, mineral mining, fisheries, and myriad ecosystem services and recreational opportunities. The changing chemistry of the Gulf also has wide-ranging effects on weather patterns as many of the hurricanes that reach land in the US and Mexico pass through this ocean basin. We are already seeing some of the consequences of climate change, including, to name one example, the increased frequency of harmful algal blooms, the cause of which is still unknown in most cases. This book brings together a team of expert chemical oceanographers from the US and Mexico to provide a foundational understanding of the complex chemistry of North America’s only marginal sea. Gulf of Mexico Origin, Waters, and Biota: Volume 5, Chemical Oceanography serves as an important reference for understanding the basic science, management, and economic issues facing the Gulf of Mexico while pointing out key topics in critical need of additional research.

Labile Organic Matter

Labile Organic Matter PDF

Author: Zhongqi He

Publisher: John Wiley & Sons

Published: 2020-01-22

Total Pages: 400

ISBN-13: 0891189629

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"Because of its dynamic nature, labile organic matter is a key player in terrestrial and aquatic ecosystems. Editors Zhongqi He and Fengchang Wu include contributions from more than 30 senior researchers and innovative junior investigators from six countries. With issue-oriented comprehensive reviews and problem-solving case studies, this collection brings together soil and aquatic scientists to provide a comprehensive understanding for managing the sources and fates of labile organic matter. A timely synthesis of recent research, this collection illustrates the remarkable range of advanced techniques and approaches for labile organic matter research. This book will serve as a valuable reference for university faculty, graduate students, soil scientists, ecologists, limnologists, marine scientists, environmental scientists, agricultural engineers, and any who work with various aspects of labile organic matter in the environment."

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