• Sherri L. Johnson - Principal Investigator
  US Forest Service ;Pacific NW Research Station ;3200 SW Jefferson Way, Corvallis, OR, 97331, USA
  Phone: 541-758-7771
  Email: sherri.johnson2@usda.gov, sherri.johnson@oregonstate.edu
  URL: https://www.fs.fed.us/research/people/profile.php?alias=sherrijohnson
• Julia A. Jones - Principal Investigator
  Oregon State University;Department of Geosciences; Wilkinson Hall 104, Corvallis, OR, 97331-5506, USA
  Phone: (541) 737-1224
  Email: Julia.Jones@oregonstate.edu, geojulia@comcast.net
  URL: http://ceoas.oregonstate.edu/profile/jones/
  ORCID: http://orcid.org/0000-0001-9429-8925
• Matthew G Betts - Principal Investigator
  Department of Forest Ecosystems and Society; 201E Richardson Hall; College of Forestry; Oregon State University, Corvallis, OR, 97331
  Phone: (541) 737-3841
  Email: matt.betts@oregonstate.edu
  URL: http://www.fsl.orst.edu/flel/index.htm
• Michael P. Nelson - Principal Investigator
  Department of Forest Ecosystems and Society; 201K Richarson Hall; College of Forestry; Oregon State University, Corvallis, OR, 97331
  Phone: 541-737-9221
  Email: mpnelson@oregonstate.edu
  URL: http://www.michaelpnelson.com
  ORCID: http://orcid.org/0000-0001-6917-4752
• David Bell - Principal Investigator
  Email: david.bell@usda.gov, david.bell@oregonstate.edu
  URL: https://lemma.forestry.oregonstate.edu/about/david-bell

• The H.J. Andrews Experimental Forest is a living laboratory that provides unparalleled opportunities for the study of forest and stream ecosystems in the central Cascade Range of Oregon. Since 1980, as a part of the National Science Foundation Long Term Ecological Research (NSF-LTER) program, the Andrews Experimental Forest has become a leader in the analysis of forest and stream ecosystem dynamics.
• Long-term field experiments and measurement programs have focused on climate dynamics, streamflow, water quality, and vegetation succession. Currently researchers are working to develop concepts and tools needed to predict effects of natural disturbance, land use, and climate change on ecosystem structure, function, and species composition.
• The Andrews Experimental Forest is administered cooperatively by the USDA Forest Service Pacific Northwest Research Station, Oregon State University and the Willamette National Forest. Funding for the research program comes from the National Science Foundation (NSF), US Forest Service Pacific Northwest Research Station, Oregon State University, and other sources.

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. National Science Foundation: DEB1440409

• Long-Term Ecological Research
  The Andrews Forest is situated in the western Cascade Range of Oregon, and covers the entire 15,800-acre (6400-ha) drainage basin of Lookout Creek. Elevation ranges from 1350 to 5340 feet (410 to 1630 m). Broadly representative of the rugged mountainous landscape of the Pacific Northwest, the Andrews Forest contains excellent examples of the region's conifer forests and associated wildlife and stream ecosystems. These forests are among the tallest and most productive in the world, with tree heights of often greater than 250 ft (75 m). Streams are steep, cold and clean, providing habitat for numerous aquatic organisms.

• TP11902: Vegetation cover map for 1967 for Watershed 1 The accuracy of the aerial photo interpretation was assessed through comparison of the percent cover maps against the plot cover measurements. Some differences were expected between the mapped cover percentages and the plot measurement, because of the difference in the resolution of the mapped areas and the 2x2m plot size. The mapped areas were drawn with an expectation that there was significant heterogeneity in the vegetation cover within each map unit. These results are presented in Appendix B of thesis.
• The 1972 herbaceous cover map agreed with the plot data for 45 plots, and in general overestimated herbaceous cover. The 1972 conifer and evergreen broadleaf cover map agreed with the plot data for 31 plots, and in general overestimated conifer and evergreen broadleaf cover. The 1972 deciduous broadleaf cover map agreed with the plot data for 58 plots, and in general underestimated deciduous cover. The 1979 conifer and evergreen broadleaf cover map agreed with the plot data for 35 plots, and in general overestimated conifer and evergreen broadleaf cover. The 1979 deciduous broadleaf cover map agreed with the plot data for 44 plots, and in general underestimated deciduous cover. The 1990 herbaceous cover map agreed with the plot data for 27 plots, and in general overestimated herbaceous cover. The 1990 evergreen broadleaf cover map agreed with the plot data for 18 plots, and in general overestimated evergreen broadleaf cover. The 1990 conifer cover map agreed with the plot data for 28 plots, and in general overestimated conifer cover. The 1990 deciduous broadleaf cover map agreed with the plot data for 34 plots. These map assessments were not used to adjust the cover map for two reasons. The resolution of the map units was quite a bit larger than the plot size, and there was no discernible spatial pattern in the plot data that could have been used to adjust the cover maps.

• TP11903: Herbaceous and shrub cover in 1972 for Watershed 1 Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses and bare soil). Small conifers and broadleaf evergreen shrubs were considered as one group.

Instrumentation:

• The accuracy of the aerial photo interpretation was assessed through comparison of the percent cover maps against the plot cover measurements. Some differences were expected between the mapped cover percentages and the plot measurement, because of the difference in the resolution of the mapped areas and the 2x2m plot size. The mapped areas were drawn with an expectation that there was significant heterogeneity in the vegetation cover within each map unit. These results are presented in Appendix B of thesis. The 1972 herbaceous cover map agreed with the plot data for 45 plots, and in general overestimated herbaceous cover. The 1972 conifer and evergreen broadleaf cover map agreed with the plot data for 31 plots, and in general overestimated conifer and evergreen broadleaf cover. The 1972 deciduous broadleaf cover map agreed with the plot data for 58 plots, and in general underestimated deciduous cover. The 1979 conifer and evergreen broadleaf cover map agreed with the plot data for 35 plots, and in general overestimated conifer and evergreen broadleaf cover. The 1979 deciduous broadleaf cover map agreed with the plot data for 44 plots, and in general underestimated deciduous cover. The 1990 herbaceous cover map agreed with the plot data for 27 plots, and in general overestimated herbaceous cover. The 1990 evergreen broadleaf cover map agreed with the plot data for 18 plots, and in general overestimated evergreen broadleaf cover. The 1990 conifer cover map agreed with the plot data for 28 plots, and in general overestimated conifer cover. The 1990 deciduous broadleaf cover map agreed with the plot data for 34 plots. These map assessments were not used to adjust the cover map for two reasons. The resolution of the map units was quite a bit larger than the plot size, and there was no discernible spatial pattern in the plot data that could have been used to adjust the cover maps.

• TP11904:Deciduous broadleaf cover in 1972 for Watershed 1 Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses and bare soil)

• TP11905: Herbaceous and shrub cover in 1979 for Watershed 1 Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses and bare soil) color aerial photography 1:12000 scale

• PT11906: Deciduous broadleaf cover in 1979 for Watershed 1 Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses, and bare soil)

• TP11907: Herbaceous and shrub cover in 1990 for Watershed 1 Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses, and bare soil) color aerial photography

• TP11908: Deciduous broadleaf cover in 1990 for Watershed 1 Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses and bare soil) color aerial photography

• TP11909: Soil survey (1964) for Watersheds 1, 2, and 3, Small watershed survey was completed in 1964.

• TP11910: Vegetation mapping (1959) for Watershed 1 and 2 Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses and bare soil) black and white aerial photography.

• TP11911: Vegetation plot data (1962) for Watershed 1: Vegetation data for functional groups (conifer, evergreen broadleaf, deciduous broadleaf) was aggregated from species data available in TP73

• TP11912: Vegetation plot data (1967) for Watershed 1, Andrews Experimental Forest. Vegetation data for functional groups (conifer, evergreen broadleaf, deciduous broadleaf) was aggregated from species data available in TP73

• TP11913: Vegetation plot data (1972) for Watershed 1: Vegetation data for functional groups (conifer, evergreen broadleaf, deciduous broadleaf) was aggregated from species data available in TP73

• TP11914: Vegetation plot data (1979) for Watershed 1: Vegetation data for functional groups (conifer, evergreen broadleaf, deciduous broadleaf) was aggregated from species data available in TP73

• TP11915: Vegetation plot data (1990) for Watershed 1: Vegetation data for functional groups (conifer, evergreen broadleaf, deciduous broadleaf) was aggregated from species data available in TP73

• TP11916: Vegetation Plots with landscape variables (1962) for Watershed 1 The vegetation plots in watershed 1 with associated attributes. Vegetation data for functional groups (conifer, evergreen broadleaf, deciduous broadleaf) was aggregated from species data available in TP73 (black and white aerial photography)

• TP11917: Pre-harvest vegetation map for Watersheds 2 and 3, Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses and bare soil) and forest age class was determined for each year (1959, 1962, 1967, 1972, 1979, and 1990). (black and white aerial photography) Data was digitized into Arc/Info coverage, converted to a shapefile and projected to Nad83 Datum

• TP11918: Pre-harvest vegetation map for Watersheds 2, Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses and bare soil) and forest age class was determined for each year (1959, 1962, 1967, 1972, 1979, and 1990). (black and white aerial photography) Data was digitized into Arc/Info coverage, converted to a shapefile and projected to Nad83 Datum

• TP11919: Vegetation cover map 1959 for Watershed 2. Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses and bare soil) and forest age class was determined for each year (1959, 1962, 1967, 1972, 1979, and 1990). (black and white aerial photography) Data was digitized into Arc/Info coverage, converted to a shapefile and projected to Nad83 Datum

• TP11920: Pre-harvest vegetation map for Watersheds 3. Photos were interpreted for hydrologically relevant vegetation types (conifer, broadleaf, grasses and bare soil) and forest age class was determined for each year (1959, 1962, 1967, 1972, 1979, and 1990). (black and white aerial photography) Data was digitized into Arc/Info coverage, converted to a shapefile and projected to Nad83 Datum