Contact Adelaide Johnson
In my current work, I am evaluating metrics to determine the effectiveness of channel restoration and am measuring the sources of carbon in the hydrologic cycle. I also am assessing alpine timberline advance by evaluating site temperature, site moisture, plant water relations, and stomatal conductance.
Multi-scales of hydrology, from water in individual plants to evaluation of water amount and quality in soils and stream systems; abiotic (nonliving) and biotic (living) linkages; and the role of disturbance in habitat and microsite creation.
My past research has focused on landslide initiation, runout, and deposition in old-growth, second-growth, clearcut, and yellow cedar decline forests; effects of landslide dam-break floods on channel morphology; and effects of disturbance on tree species, throughfall, and large woody debris recruitment in channels.
Why This Research is Important
My research is working toward an understanding of whole-system water relationships, which is integral to detecting influences of both management practices and climate change on water and forest pattern. A better understanding of factors influencing water can help us to develop improved restoration techniques and to guide strategies for planning into the future.
- Portland State University, Ph.D. Candidate Environmental Studies and Management, 2012
- Johns Hopkins University, M. A. Environmental Engineering, 1996
- University of Washington, M. S. Ecosystem Analysis, 1991
- Hartwick College, B. S. Geology, 1982
Featured Publications & Products
- Johnson, A.C.; Edwards, R.T.; Erhardt, R. 2007. Ground-Water Response To Forest Harvest: Implications For Hillslope Stability.
- Gomi, Takashi; Johnson, Adelaide C.; Deal, Robert L.; Hennon, Paul E.; Orlikowska, Ewa H.; Wipfli, Mark S. 2006. Factors Affecting Distribution Of Wood, Detritus, And Sediment In Headwater Streams Draining Managed Young-Growth Red Alder-Conifer Forests In Southeast Alaska.
- Wipfli, Mark S.; Deal, Robert L.; Hennon, Paul E.; Johnson, Adelaide C.; Edwards, Richard T.; De Santo, Toni L.; Gomi, Takashi; Orlikowska, Ewa H.; Bryant, Mason D.; Schultz, Mark E.; LeSage, Christian; Kimbirauskus, Ryan; D'Amore, David V. 2003. Compatible Management Of Red Alder-Conifer Ecosystems In Southeastern Alaska..
- Haynes, Richard W.; Monserud, Robert A.; Johnson, Adelaide C. 2003. Compatible Forest Management: Background And Context..
- Monserud, Robert A.; Haynes, Richard W.; Johnson, Adelaide C. 2003. Chapter 17: The Search For Compatibility: What Have We Learned.
- Akagi, S. K.; Yokelson, R. J.; Burling, I. R.; Meinardi, S.; Simpson, I.; Blake, D. R.; McMeeking, G. R.; Sullivan, A.; Lee, T.; Kreidenweis, S.; Urbanski, S.; Reardon, J.; Griffith, D. W. T.; Johnson, T. J.; Weise, D. R. 2012. Measurements Of Reactive Trace Gases And Variable O3 Formation Rates In Some South Carolina Biomass Burning Plumes Discussions.
- Dhakal, Amod; Sidle, Roy C.; Johnson, A.C.; Edwards, R.T. 2008. Reply To Discussion: Ground Water Response To Forest Harvest: Implications Or Hillslope Stability.
- Hennon, P.; D'Amore, D.; Wittwer, D.; Johnson, A.; Schaberg, P.; Hawley, G.; Beier, C.; Sink, S.; Juday, G. 2006. Climate Warming, Reduced Snow, And Freezing Injury Could Explain The Demise Of Yellow-Cedar In Southeast Alaska, Usa.
- Johnson, Adelaide C.; Haynes, Richard W.; Monserud, Robert A., eds. 2002. Congruent Management Of Multiple Resources: Proceedings From The Wood Compatibility Initiative Workshop..
- Wipfli, Mark S.; Deal, Robert L.; Hennon, Paul E.; Johnson, Adelaide C.; de Santo, Toni L.; Hanley, Thomas A.; Schultz, Mark E.; Bryant, Mason D.; Edwards, Richard T.; Orlikowska, Ewa H.; Gomi, Takashi. 2002. Managing Young Upland Forests In Southeast Alaska For Wood Products, Wildlife, Aquatic Resources, And Fishes: Problem Analysis And Study Plan..
- Johnson, Adelaide C.; Wilcock, Peter. 1998. Effect Of Root Strength And Soil Saturation On Hillslope Stability In Forests With Natural Cedar Decline In Headwater Regions Of Se Alaska..