Decomposition of Fine Woody Roots: a Time Series Approach, 1995 to 2006

  • Creator(s): Mark E. Harmon
  • PI(s): Mark E. Harmon
  • Originator(s): Mark E. Harmon
  • Other researcher(s): Hua Chen
  • Dates of data collection: Jun 1 1995 - Jun 1 2006
  • Data collection status: Study collection is completed and no new collection is planned
  • Data access: Online
  • DOI:
  • Last update: Jun 28 2005 (Version 2)
<Citation>     <Acknowledgement>     <Disclaimer>    
Harmon, M. 2005. Decomposition of Fine Woody Roots: a Time Series Approach, 1995 to 2006. Long-Term Ecological Research. Forest Science Data Bank, Corvallis, OR. [Database]. Available: Accessed 2024-07-18.
Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 2025755), US Forest Service Pacific Northwest Research Station, and Oregon State University.
While substantial efforts are made to ensure the accuracy of data and documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is". The Andrews LTER shall not be liable for damages resulting from any use or misinterpretation of data sets.
We examined the effects of species, initial substrate quality, and site differences on woody root decomposition and its nitrogen dynamics in Sitka spruce (Picea sitchensis), Douglas-fir (Pseudotsuga menziesii), and ponderosa pine (Pinus ponderosa) dominated forests in Oregon, U.S.A. using a time series approach. Roots of fourteen species and five size classes were placed in the field to incubate and then collected at pre-planned intervals to determine mass loss and nitrogen content.

Study Description Taxonomic Hierarchy Download Study Location Information: (CSV)
Ecological Metadata Language: (EML)
1Sample weights, mass loss, carbon and nitrogen dynamics METADATADATA

 A chronosequence of woody root decomposition in the Pacific Northwest, 1995 to 1997 (TD032)

 Chen, Hua, Hicks, William 2003, High asymbiotic N2 fixation rates in woody roots after six years of decomposition: controls and implications (Pub. No: 3682)
 Chen, Hua, Harmon, Mark E., Sexton, Jay, Fasth, Becky 2002, Fine-root decomposition and N dynamics in coniferous forests of the Pacific Northwest, USA (Pub. No: 2793)
 Chen, Hua, Harmon, Mark E., Griffiths, Robert P., Hicks, William 2000, Effects of temperature and moisture on carbon respired from decomposing woody roots (Pub. No: 2653)
 Chen, Hua 1999, Root decomposition in three coniferous forests: effects of substrate quality, temperature, and moisture (Pub. No: 2619)