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U.S. Department of Agriculture, Forest Service
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Density Management and
in Western Oregon
Paul Anderson
PHASE 1 RESULTS, LAUNCH OF PHASE 2
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producing timber.
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STUDY TREATMENTS
Phase 1 and 2 treatments for DMS Initial Thinning and Riparian Buffer study
Trees per acre*
Phase 1
1997-2002
Phase 2
2009-2011
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Phase 1 and 2 treatments for DMS Rethinning study
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Control—commercial
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VEGETATION RESPONSES TO THINNING
TREATMENTS
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Key Question
Does thinning affect overstory growth and
development of late-successional characteristics?
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Understory vegetation and tree regeneration in a gap and
interior forest at a study site.
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species.
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understory vegetation.
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What is the relative contribution of the forest
interior, gaps, and leave islands to species richness?
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What effects do gaps have on
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William P. Leonard
HABITATS AND VERTEBRATES ASSOCIATED
WITH HEADWATER STREAMS
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assemblages of species and transport important nutrients
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How are headwater streams distinct?
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Key Question
Did riparian buffers protect headwater vertebrates
and their habitat from the effects of upslope thinning
treatments?
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provide connectivity among streams over ridgelines.
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RIPARIAN MICROCLIMATE AND MICROHABITATS
Key Question
How do thinning treatments affect
microclimates and microhabitats in headwater
riparian areas and adjacent uplands?
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ADDITIONAL STUDIES
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DMS Coordinator:
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chris_sheridan@blm.gov
Principal Investigators:
Paul Anderson pdanderson@fs.fed.us
Deanna H. Olson dedeolson@fs.fed.us
Yklaus.puettmann@oregonstate.edu
Anderson, P.D.; Larson, D.J.; Chan, S.S. 2007.
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Kuehne, C.; Puettmann, K.J. 2008.
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Publications Distribution
P.O. Box 3890
Portland, OR 97208-3890
Fahey, R.; Puettmann, K.J. 2008. Patterns in
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Olson, D.H.; Anderson, P.D.; Frissell, C.A.;
Welsh, H.H., Jr.; Bradford, D.F. 2007. @
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Olson, D.H.; Weaver, G. 2007. Vertebrate assemblages
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P.O. Box 3890
Portland, OR 97208-3890
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