Decomposition vectors: a new approach to estimating woody detritus decomposition dynamics Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/pv63g068h

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • A chronosequence of three species of logs (Pinus sylvestris L., Picea abies (L.) Karst, and Betula pendula Roth.) from northwestern Russia was resampled to develop a new method to estimate rates of biomass, volume, and density loss. We call this resampling of a chronosequence the decomposition-vector method, and it represents a hybrid between the chronosequence and time-series approaches. The decomposition-vector method with a 3-year resampling interval gave decomposition rates statistically similar to those of the one-time chronosequence method. This indicated that, for most cases, a negative exponential pattern of biomass, volume, and density loss occurred. In the case of biomass loss of P. sylvestris, however, polynomial regression indicated decomposition rates were initially low, then increased, and then decreased as biomass was lost. This strongly suggests three distinct phases: the first when decomposers colonized the woody detritus, a second period of rapid exponential mass loss, and a third period of slow decomposition. The consequences for this complex pattern of decomposition were explored at the ecosystem level using a simple model. We found that a single rate constant can be used if inputs vary within a factor of 10, but that this approach is problematical if inputs are more variable.
Resource Type
Date Available
Date Issued
Citation
  • Mark E. Harmon, Olga N. Krankina, and Jay Sexton. 2000. Decomposition vectors: a new approach to estimating woody detritus decomposition dynamics. Can. J. For. Res. 30: 76–84.
Academic Affiliation
Series
Rights Statement
Publisher
Language
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2010-02-19T04:52:27Z (GMT). No. of bitstreams: 1 00Harmon_etal.pdf: 244257 bytes, checksum: b204230020bef3d64cbdfa301a66d6c3 (MD5) Previous issue date: 2000
  • description.provenance : Submitted by Alexa Pinckard (pinckara@onid.orst.edu) on 2010-02-19T00:53:28Z No. of bitstreams: 1 00Harmon_etal.pdf: 244257 bytes, checksum: b204230020bef3d64cbdfa301a66d6c3 (MD5)
  • description.provenance : Approved for entry into archive by Caryn Davis(caryn.davis@oregonstate.edu) on 2010-02-19T04:52:27Z (GMT) No. of bitstreams: 1 00Harmon_etal.pdf: 244257 bytes, checksum: b204230020bef3d64cbdfa301a66d6c3 (MD5)

Relationships

In Administrative Set:
Last modified: 07/06/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items