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Decomposition contro

For 330 Decomposition controls from Chapin 2011

C:N ratio Ratio of carbon mass to nitrogen mass.
Decomposition Breakdown of dead organic matter through fragmentation, chemical alteration, and leaching.
Decomposition rate constant, k Constant (k) that describes the exponential breakdown of a tissue.
Exoenzyme Enzyme that is secreted by an organism into the environment.
Heterotrophic respiration Respiration by nonautotrophic organisms (i.e., microbes and animals).
Labile Easily decomposed.
Lignin An aromatic polymer that, with cellulose, forms secondary cell walls of woody tissue.
Litterbag Mesh bag used to measure decomposition rate of detritus.
Mean residence time Mass divided by the flux into or out of the pool over a given time period; inverse of turnover.
Phosphatase Enzyme that hydrolyzes phosphate from a phosphate-containing organic compound.
Protease Protein-hydrolyzing enzyme.
Quality Chemical nature of organic matter that determines the ease with which it is broken down by herbivores or decomposers.
Recalcitrant Resistant to microbial breakdown.
Rhizosphere Zone of soil that is directly influenced by roots.
Turnover Turnover Replacement of a pool; ratio of the flux to the pool size; inverse of mean residence time.
Created by: mdcoleman



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