Titlebook: Aquatic Humic Substances; Ecology and Biogeoch Dag O. Hessen,Lars J. Tranvik Book 1998 Springer-Verlag Berlin Heidelberg 1998 Humus.Kohlens

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Cycling of Dissolved Organic Matter in the Ocean.C “age” of dissolved organic carbon (DOC) in the deep ocean is 4000–6000 years B.P. (Williams and Druffel 1987; Bauer et al. 1992), indicating that some organic matter has a long residence time in the ocean. These apparently contradictory observations indicate that residence times of the diverse mi

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https://doi.org/10.1007/978-3-663-04824-4e fraction of the nonliving organic carbon. Scientists all over the world have conducted a tremendous number of studies of humic substances in the field and laboratory. There have been several comprehensive critical reviews of the state of the art of the study of humic substances (Christman and Gjes

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,Fließbarkeit und Zustandsdiagramm,which they were derived (Kononova 1975; Hayes and Swift 1978). The predominant part of organic material in surface waters is normally allochthonously derived. The material is produced within the catchment and brought to the lakes and rivers by runoff in countless numbers of physicochemical forms (e.

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,Fließbarkeit und Zustandsdiagramm,ive properties that have significant effects on aquatic ecosystems. Operationally, DOM passes through most common filters and is composed mainly of organic matter. DOM is a significant source of carbon fueling microbial metabolism (Wetzel et al. 1995) and attenuates significantly the penetration of

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