Modeling the Persistence of Lignocellulosic Detritus in Wetland Ecosystems
Lignocellulose derived from the biomass of marine or aquatic vascular plants constitutes the single most abundant source of organic matter in many wetland ecosystems such as marshes and swamps. The detritus that forms when the plants die and are deposited on the sediments is presumed to serve both as the basis of animal food webs and as the starting material from which sedimentary geopolymers, such as humus and peat, are made. Thus, the longterm fate of lignocellulose, which is a complex heteropolymer of lignin and the polysaccharides, cellulose and hemicellulose, is of interest to both the ecologist, from the standpoint of nutrient cycling and ecosystem trophodynamics, and the geochemist, modeling the accumulation and dissimilation of sedimentary organic matter. Central to both of these efforts is an understanding of the kinetics of lignocellulose transformation and mineralization in aquatic ecosystems.
KeywordsBiomass Cellulose Formalin Lignin Polysaccharide
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- Berner, R.A. (1980). A rate model for organic matter decomposition during bacterial sulfate reduction in marine sediments, In: Biogeochemistry of Organic Matter at the Sediment-Water Interface, pp. 35-44, CNRS Int. Colloq.Google Scholar
- Bunnell, F.L. and Tait, D.E.N. (1974). Mathematical simulation models of decomposition processes, In: Soil Organisms and Decomposition in Tundra, pp. 207–225 (A.J. Holding, O.W. Heal, S.R. Maclean, and P.W. Flanagan, eds.), Tundra Biome Steering Committee, Stockholm.Google Scholar
- Goering, H.K. and Van Soest, P.J. (1970). Forage fiber analysis. Agricultural Handbook No. 379. USDA.Google Scholar
- Hodson, R.E., Maccubbin, A.E., and Benner, R. (1982). Microbial degradation of natural and pollutionally-derived lignocellulosic detritus in wetland ecosystems. Technical completion report, USDI/OWRT Project No. A-082-GA. Environmental Resources Center, Georgia Institute of Technology, Atlanta, GA. ERC 02-82.Google Scholar
- Ljungdahl, L.G. and Eriksson, K.E. (1985). Ecology of microbial cellulose degradation. In: Advances in Microbial Ecology, pp. 237–299 (K.C. Marshall, ed.), Plenum Press, New York, NY.Google Scholar
- Melillo, J.M., Naiman, R.J., Aber, J.D., and Linkins, A.E. (1984). Factors controlling mass loss and nitrogen dynamics of plant litter decaying in northern streams. Bull. Mar. Sci., 35, 341–356.Google Scholar
- SAS (1982). SAS user’s guide: Statistics, 1982 Edition. SAS Institute Inc., Cary, NC.Google Scholar