Species interactions during succession in the western Cascade Range of Oregon, 1990 to present

  • PI: Charles B. Halpern
  • Originator: Charles B. Halpern
  • Other researchers: Joseph A. Antos, Annette M. Olson, Kermit Cromack Jr.
  • Dates of data collection: Jul 1 1990 - Jun 22 2015
  • Data collection status: Study continues and further data collection is planned
  • Data access: Online
  • Access constraint:
  • Last update: Jul 23 2015 (Version 15)
<Citation>     <Acknowledgement>     <Disclaimer>    
Halpern, C. 2015. Species interactions during succession in the western Cascade Range of Oregon, 1990 to present. Long-Term Ecological Research. Forest Science Data Bank, Corvallis, OR. [Database]. Available: (27 June 2017) .
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.
To examine the roles of species interactions among early seral and residual forest taxa in driving successional change after clearcut logging and slash burning.

Study Description Taxonomic Hierarchy Download Study Location Information: (CSV)
Download Full Documentation: (PDF)(EML)
1Species Cover, Density, and Biomass (Jun 1 1990 - Jun 22 2015)METADATADATA
2Species Removals (counts) (Jun 1 1990 - May 17 1998)METADATADATA
3Species Cover, Density, and Biomass (Jun 1 1990 - Aug 15 1996)METADATADATA
Fieldsheet Format original
4Species Cover, Density, and Biomass (Jun 1 1997 - Jul 14 1999)METADATADATA
Fieldsheet Format modified
5Equations used for calculating biomass (Jun 21 1992 - Sep 30 2005)METADATADATA
6Estimated biomass (Jun 21 1992 - Jun 22 2015)METADATADATA

 Halpern, Charles B., Miller, Eric A., Geyer, Melora A. 1996, Equations for predicting above-ground biomass of plant species in early successional forests of the western Cascade Range, Oregon (Pub. No: 2262)
 Halpern, Charles B., Antos, Joseph A., Geyer, Melora A., Olson, Annette M. 1997, Species replacement during early secondary succession: the abrupt decline of a winter annual (Pub. No: 1890)
 Antos, Joseph A., Halpern, Charles B. 1997, Root system differences among species: implications for early successional changes in forests of western Oregon (Pub. No: 2322)
 Compagnoni, Aldo 2008, Controls on plant species invasions during early secondary succession: the roles of plant origin and community properties (Pub. No: 4412)
 Compagnoni, Aldo, Halpern, Charles B. 2009, Properties of native plant communities do not determine exotic success during early forest succession (Pub. No: 4437)