Cohen, Warren

Position Type: 
Job Title: 
Research Associate
Forest Ecosystems & Society
Office Location: 

362 FSL

Phone Number: 
(541) 750-7322
Fax Number: 
(541) 750-7329
B.S., 1978, Northern Arizona University, Flagstaff
M.S., 1984, University of Maine, Orono
Ph.D., 1989, Colorado State University, Ft. Collins
Research Interests: 
  • Remote Sensing
Scaling field-based ecological information to landscape and regional levels with remote sensing and models; examining losses of information with scaling-induced generalization; interpretations and applications of lidar data for characterizations of forest structure.
Research Forester and Director Laboratory for Application of Remote Sensing in Ecology USDA Forest Service Pacific Northwest Research Station
Courses Taught: 
  • FS 505
    Reading & Conference
Selected Publications: 
  1. Powell, S.L., W.B. Cohen, S.P. Healey, R.E. Kennedy, G.G. Moisen, K.B. Pierce, and J.L. Ohmann. 2010. Quantification of Live Aboveground Forest Biomass Dynamics with Landsat Time-Series and Field Inventory Data: A Comparison of Empirical Modeling Approaches, Remote Sensing of Environment 114:1053-1068.
  2. Spies, T.A., J.D. Miller, J.B. Buchanan, J.F. Lehmkuhl, J.F. Franklin, S.P. Healey, P.F. Hessburg, H.D. Safford, W.B. Cohen, R.H. Kennedy, E.E. Knapp, J.K. Agee, and M. Moeur. 2010. Underestimating risks to the northern spotted owl in fire-prone forests:  a response to Hanson et al., Conservation Biology Volume 24 Issue 1, Pages 330 - 333. DOI: 10.1111/j.1523-1739.2009.01414.x
  3. Kennedy, R.E., P.A. Townsend, J. Gross, W.B. Cohen, P. Bolstad, Y.Q. Wang, and P. Adams. 2009. Remote sensing change detection tools and natural resource managers: Understanding concepts and tradeoffs in the design of landscape monitoring projects, Remote Sensing of Environment Vol. 113, No. 7 pp. 1382-1396.
  4. Kim, Y., Z. Yang, W.B. Cohen, D. Pflugmacher, C. Lauver, J.L. Vankat. 2009. Distinguishing between live and dead standing tree biomass on the North Rim of Grand Canyon National Park, USA using small-footprint lidar data, Remote Sensing of Environment, doi:10.1016/j.rse.2009.07.010.
  5. Goward, S.N., J.G. Masek, W.B. Cohen, G. Moisen, G.. Collatz, S. Healey, R.A. Houghton, C. Huang, R. Kennedy, B. Law, S. Powell, D. Turner, M.A. Wulder. 2008. Forest disturbance and North American carbon flux, EOS Transactions 89:105-116, American Geophysical Union
  6. Hayes, D.J., W.B. Cohen, S.A. Sader, and D.E. Irwin. 2008. Estimating proportional change in forest cover as a continuous variable from multi-year MODIS data, Remote Sensing of Environment. 112:735-749.
  7. Healey, S.P., W.B. Cohen, T.A. Spies, M. Moeur, D. Pflugmacher, M.G. Whitley, and M. Lefsky. In press. The Relative Impact of harvest and fire upon landscape-level dynamics of older forests: lessons from the Northwest Forest Plan, Ecosystems.DOI: 10.1007/s10021-008-9182-8
  8. Liu, W., C. Song, T.A. Schroeder, and W.B. Cohen. 2008. Predicting forest successional stages using multitemporal Landsat imagery and Forest Inventory and Analysis data, International Journal of Remote Sensing 29:3855-3872.
  9. Masek, J.G., C. Huang, W.B. Cohen, J. Kutler, F.G. Hall, R. Wolfe, and P. Nelson. 2008. North American forest disturbance mapped from a decadal Landsat record: methodology and initial results, Remote Sensing of Environment 112:2914-2926.
  10. Pascual, C., A. García-Abril, L.G. García-Montero, S. Martín-Fernández, and W.B. Cohen. 2008. Forest stand delineation and structure characterization using lidar data in heterogeneous pine forests of Spain. Forest Ecology and Management 255:3677-3685.
  11. Powell, S.L., W.B. Cohen, Z. Yang, J. Pierce, and M. Alberti. 2008. Quantification of impervious surface in the Snohomish Water Resources Inventory Area of Western Washington from 1972-2006, Remote Sensing of Environment 112:1895-1908.
  12. Schroeder,T.A., A. Gray, M.E. Harmon, D.O. Wallin, and W.B. Cohen. 2008. Estimating live forest carbon dynamics with a Landsat-based curve fitting approach , Journal of Applied Remote Sensing 02:023519, DOI:10.1117/12.804055.
  13. Wulder, M.A., J.C. White, S.N. Goward, J.G. Masek, J.R.Irons, M. Herold, W.B. Cohen, T.R. Loveland, C.E. Woodcock. 2008. Landsat continuity: Issues and opportunities for land cover monitoring, Remote Sensing of Environment. 112:955-969.
  14. Hayes, D.J. and W.B. Cohen. 2007. Spatial, spectral and temporal patterns of tropical forest cover change as observed with multiple scales of optical satellite data, Remote Sensing of Environment 106:1-16.
  15. Kennedy, R.E., W.B. Cohen, A.A. Kirschbaum, and E. Haunreiter. 2007. Protocol for Landsat-based monitoring of landscape dynamics at North Coast and Cascades Network Parks: U.S. Geological Survey Techniques and Methods 2-G1, 126 p.
  16. Kennedy, R.E., W.B. Cohen, T.A. Schroeder. 2007. Trajectory-based change detection for automated characterization of forest disturbance dynamics, Remote Sensing of Environment 110:370-386.
  17. Lobser, S.E. and W.B. Cohen. 2007. The MODIS tasselled cap: land cover characteristics expressed through transformed MODIS data, International Journal of Remote Sensing 28:5079-5101.
  18. Pflugmacher, D., O.N. Krankina, and W.B. Cohen. 2007. Satellite-based peatland mapping: potential of the MODIS sensor, Global and Planetary Change 56:248-257.