Overview

Humic substances occur in all kinds of aquatic systems, but are particularly important in northern, coniferous areas. They strongly modify the aquatic ecosystems and also constitute a major problem in the drinking water supply.This volume covers all aspects of aquatic humic substances, from their origin and chemical properties, their effects on light and nutrient regimes and biogeochemical cycling, to their role regarding organisms, productivity and food web organization from bacteria to fish. Special emphasis is paid to carbon cycling and food web organization in humic lakes, but aspects of marine carbon cycling related to humus are treated as well.

Full Product Details

Author:   Dag Hessen ,  Lars J. Tranvik
Publisher:   Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
Imprint:   Springer-Verlag Berlin and Heidelberg GmbH & Co. K
Edition:   1998 ed.
Volume:   133
Dimensions:   Width: 15.50cm , Height: 2.20cm , Length: 23.50cm
Weight:   1.540kg
ISBN:  

9783540639107

ISBN 10:   3540639101
Pages:   346
Publication Date:   16 July 1998
Audience:   College/higher education ,  Professional and scholarly ,  Undergraduate ,  Postgraduate, Research & Scholarly
Format:   Hardback
Publisher's Status:   Active
Availability:   In Print  
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Table of Contents

Humic Substances as Ecosystem Modifiers — Introduction.- 1 Sources and Age of Aquatic Humus.- 2 Chemical Composition, Structure, and Metal Binding Properties.- 3 Humus and Acidification.- 4 Climatic and Hydrologic Control of DOM Concentration and Quality in Lakes.- 5 Attenuation of Solar Radiation in Humic Waters.- 6 Effects of UV Radiation on Aquatic Humus: Photochemical Principles and Experimental Considerations.- 7 Phytoplankton, Primary Production and Nutrient Cycling.- 8 Nutrient Limitation and Bacteria — Phytoplankton Interactions in Humic Lakes.- 9 The Role of Microbial Extracellular Enzymes in the Transformation of Dissolved Organic Matter in Humic Waters.- 10 Degradation of Dissolved Organic Matter in Humic Waters by Bacteria.- 11 Food Webs and Carbon Cycling in Humic Lakes.- 12 Cycling of Dissolved Organic Matter in the Ocean.- Aquatic Humic Matter: from Molecular Structure to Ecosystem Stability.

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