Home :: Faculty & Staff :: Directory :: Steven Sader
Steven Sader
Professor of Forest Resources
Graduate Coordinator
Director, Maine Image Analysis Laboratory (MIAL)
Cooperating Professor of Wildlife Ecology
Honors: G. Peirce and F.P. Webber Outstanding Researcher in Forest Resources 2003-04
Address and Contact Information:
School of Forest Resources, University of Maine
260 Nutting Hall, Orono, Maine 04469
Phone: (207) 581-2845; Fax: (207) 581-2875
e-mail: sader@umenfa.maine.edu
Degrees:
- 1973 No. Arizona University, B.S. in Forest Management
- 1976 Mississippi State University, M.S. in Forest Management
- 1981 University of Idaho, Ph.D. in Forest Resources
Primary research area:
- Remote sensing of forest environments; Forest change detection and monitoring, Landscape ecology and metrics, Spatial and temporal assessment of partial harvests and regeneration stands
Check out the Maine Image Analysis Laboratory
Current and recent research:
- US Forest Service, Northern States Cooperative Research. Theme 1 - Developing and testing a landscape forest sustainability and biodiversity analysis system
- US Forest Service, Northern States Cooperative Research. Theme 3 - Quantifying partial harvesting and residual stand composition among changing forest landowners in Maine
- New England Forestry Foundation, Monitoring working forest conservation easements
- NASA, Tropical deforestation patterns in Central America
Recent Peer-Reviewed Publications:
Spruce, J.P., S.A. Sader and several others. Assessment of MODIS and simulated VIIRS data products for detecting defoliation from Gypsy Moth outbreak. Manuscript in review.
Sader, S.A. and K.R. Legaard. Inclusion of forest harvest legacies, forest type, and regeneration spatial patterns in updated forest maps: a comparison of mapping results.
Manuscript in review.
Hayes, D.J., W.B.Cohen, S.A. Sader and D.E.Irwin. 2007. Estimating proportional change in forest cover as a continuous variable from multi-year MODIS data. Remote Sensing of Environment. In press
Cordero Sancho, S. and S.A. Sader. 2007. Spectral analysis and classification accuracy of coffee crops using Landsat and a topographic-environmental model. International Journal of Remote Sensing 28(7: 1577-1593.
Jin, S. and S.A. Sader. 2006. Effects of ownership and change on forest harvest rates, types and trends in northern Maine. Forest Ecology and Management 228: 177-186.
Sader, S.A., S. Jin, J.W. Metzler, and M. Hoppus. 2006. Exploratory analysis of forest harvest and regeneration pattern among multiple landowners. Forestry Chronicle 82(2): 203-210.
Williams, K., S.A. Sader, C. Pryor, and F. Reed. 2006. Application of geospatial technology to monitor forest legacy conservation easements. Journal of Forestry 104 (2):89-93.
Jin, S., and S.A. Sader. 2005. MODIS time-series imagery for forest disturbance detection and quantification of patch size effects. Remote Sensing of Environment 99(4): 462-470.
Sader, S.A., M. Hoppus, J. Metzler, and S. Jin. 2005. Perspectives of Maine forest cover change from Landsat imagery and forest inventory analysis (FIA). Journal of Forestry 103(6): 299-303.
Metzler, J.W. and S.A.Sader. 2005. Model development and comparison to predict softwood and hardwood percent cover using high and medium spatial resolution imagery. International Journal of Remote Sensing 26(17): 3749-3761
Metzler, J. and S.A. Sader. 2005. Agreement assessment between regression-derived forest cover maps and forest industry type maps. Photogrammetric Engineering and Remote Sensing 71(11):1303-1309.
Jin, S., and S.A. Sader. 2005. Comparison of time-series tasseled cap wetness and the normalized difference moisture index in detecting forest disturbances. Remote Sensing of Environment 94(3): 364-372.
Sader S.A., R.R. Chowdury, L. Schneider, and B.L. Turner. 2004..Forest change and human driving forces in Central America. Chapter 4, pp. 57-76 in: G.Guttman, A. Janetos and D. Skole (Eds.), Land Change Science: Observing, Monitoring and Understanding Trajectories of Change on the Earth’s Surface. Kluwer Academic Publishers, The Netherlands.
Sader, S.A., M. Bertrand and E. Hoffhine. 2003. Measurable effects of changing forest
harvesting practices on an industrial forest landscape. Forest Science 49(3):341-353.
Hayes, D.J. and S.A. Sader. 2002. Analyzing a forest conversion history database to
explore the spatial and temporal characteristics of forest change. Landscape Ecology
17:299-314.
Hoffhine-Wilson, E.F., and S.A. Sader. 2002. Detection of forest type using multiple dates of Landsat TM imagery. Remote Sensing of Environment 80:385-396.
Sader, S.A., K. Ross and F. Reed. 2002. The Pingree Forest Partnership: monitoring
easements at the landscape level. Journal of Forestry 100(3):20-25.
Hepinstall, J.A., W.B. Krohn and S.A. Sader. 2002. Effects of niche width on the performance and agreement of avian habitat models, Chapter 53, pp. 593-606, In Predicting Species Occurrences: Issues of Scale and Accuracy (Scott, J.M., P.J. Heglund, M. Morrison, M. Raphael, J. Haufler, B. Wall, editors). Island Press, Covello, CA .
Hayes, D.J. and S.A. Sader. 2001. Change detection techniques for monitoring forest clearing and vegetation regrowth in a tropical moist forest. Photogrammetric Engineering and Remote Sensing. 67(9):1067-1075.
Sader, S.A., D.J. Hayes, M. Coan and J.A. Hepinstall. 2001. Forest monitoring of a remote biosphere reserve. International Journal of Remote Sensing. 22(10):1937-1950
Courses Taught:
- FTY 107 – Forest Vegetation (Beginning Fall 2008)
- FTY 206 -- Photogrammetry and Remote Sensing
- FTY 609 -- Remote Sensing Special Problems
- INT 525 -- Tropical Deforestation Seminar (with W. Glanz - Zoology)
- INT 527 -- Integration of Remote Sensing and GIS in Natural Resources (with Cyndy Loftin - Wildlife Ecology)
