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Kinetics of Microbial Degradation of Vascular Plant Material in Two Wetland Ecosystems by Mary Ann Moran; Ronald Benner; Robert E. Hodson is a Environmental Science article available to read on EtoBox.

What is Kinetics of Microbial Degradation of Vascular Plant Material in Two Wetland Ecosystems about?

Vascular plant decomposition was followed during two different years in one freshwater and one marine wetland in southeastern Georgia, USA, using a modified litterbag technique. Chemical analysis of plant material revealed different rates of decomposition for different components of the plant material (soluble components, α-cellulose, hemicellulose, and lignin) and, further, that rates of decomposition of each component changed over time, such that the specific rate of decay for each fraction decreased as decomposition proceeded. Three mathematical models which differen in their treatment of the biochemical heterogeneity of vascular plant detritus were investigated with regard to their relative abilities to describe decomposition kinetics from the field incubations as well as from laboratory microcosm studies with radiolabeled plant material. A decaying coefficient model, which treats plant detritus as a single component but allows for a decreasing specific decomposition rate as material ages, was most successful in describing kinetics of decomposition. This model accomodates the changes in quality of vascular plant detritus resulting from preferential decomposition of more labile

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Author

Mary Ann Moran; Ronald Benner; Robert E. Hodson

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC (ISSN 0029-8549)

Published

1989

Language

EN

Field

Environmental Science (Physical Sciences)