Plant succession and biomass dynamics following logging and burning in Watersheds 1 and 3, Andrews Experimental Forest, 1962 to Present

  • PI: Charles B. Halpern
  • Originator: C. Ted Dyrness
  • Other researchers: James A. Lutz, C. Ted Dyrness, Jerry F. Franklin
  • Dates of data collection: Jan 1 1962 - Jul 31 2013
  • Data collection status: Study continues and further data collection is planned
  • Data access: Online
  • Last update: Nov 3 2015 (Version 12)
<Citation>     <Acknowledgement>     <Disclaimer>    
Halpern, C.; Dyrness, C. 2015. Plant succession and biomass dynamics following logging and burning in Watersheds 1 and 3, Andrews Experimental Forest, 1962 to Present. Long-Term Ecological Research. Forest Science Data Bank, Corvallis, OR. [Database]. Available: (22 March 2019) DOI:
Data were provided by the HJ Andrews Experimental Forest research program, funded by the National Science Foundation's Long-Term Ecological Research Program (DEB 1440409), 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.
Characterize plant succession on a range of plant communities and soil types following logging and burning. Data will be used to analyze change in community composition, structure, biomass and nutrients with time and the role of initial disturbance on long-patterns of community development

Study Description Study Site Map Taxonomic Hierarchy Download Study Location Information: (CSV)
Download Full Documentation: (PDF)(EML)
1Watersheds 1 and 3 Succession Plots -- Plot descriptions: Vegetation and soil classifications with location, elevation, aspect and slope measurements (Jun 25 2002 - Jul 21 2013)METADATADATA
2WS1 & 3 Succession Plots -- Cover, frequency, and biomass measurement data (Sep 25 1979 - Jul 21 2013)METADATADATA
3WS1 & 3 Succession Plots -- Tagged trees: Diameter data (Jun 13 1979 - Jul 31 2012)METADATADATA
4WS1 & 3 Succession Plots -- Tagged trees: Height data (Jun 21 1979 - Sep 11 1979)METADATADATA
5WS1 & 3 Succession Plots -- Canopy closure (Jun 25 1990 - Jul 31 2013)METADATADATA

 Plot Layout - Plot and subplot layout for sampling post 1978.
 Tree Sampling Protocol - Tree remeasurement procedures (modified for 2007)
 Vegetation Sampling Protocol - Long-term vegetation succession plots sampling procedures (modified for 2008)

 Long-term growth, mortality and regeneration of trees in permanent vegetation plots in the Pacific Northwest, 1910 to present (TV010)
 Post-logging community structure and biomass accumulation in Watershed 10, Andrews Experimental Forest , 1974 to present (TP041)
 Ecosystem dynamics in a mature (Hagan block) and old-growth (Watershed 2) forest, Andrews Experimental Forest, 1981 to present (TP091)
 Plant biomass dynamics following logging, burning, and thinning in Watersheds 6 and 7, Andrews Experimental Forest, 1979 to present (TP114)
 Plant biomass dynamics in old-growth Watersheds 8 and 9 at the Andrews Experimental Forest, 2003 to present (TP115)

 Halpern, C.B., Lutz, J.A. 2013, Canopy closure exerts weak controls on understory dynamics: A 30-year study of overstory-understory interactions (Pub. No: 4786)
 Lutz, James A., Halpern, Charles B. 2006, Tree mortality during early forest development: a long-term study of rates, causes, and consequences (Pub. No: 4017)
 Lutz, James A. 2005, The contribution of mortality to early coniferous forest development (Pub. No: 3931)
 Acker, S. A., Halpern, C. B., Harmon, M. E., Dyrness, C. T. 2002, Trends in bole biomass accumulation, net primary production and tree mortality in Pseudotsuga menziesii forests of contrasting age (Pub. No: 2824)
 Halpern, Charles B., Spies, Thomas A. 1995, Plant species diversity in natural and managed forests of the Pacific Northwest (Pub. No: 1526)
 Halpern, Charles B., Franklin, Jerry F., McKee, Arthur 1992, Changes in plant species diversity after harvest of Douglas-fir forests (Pub. No: 1405)
 Halpern, Charles B., Franklin, Jerry F. 1990, Physiognomic development of Pseudotsuga forests in relation to initial structure and disturbance intensity (Pub. No: 1129)
 Halpern, Charles B. 1989, Early successional patterns of forest species: interactions of life history traits and disturbance (Pub. No: 956)
 Halpern, Charles B. 1988, Early successional pathways and the resistance and resilience of forest communities (Pub. No: 764)