CENTRAL CASCADES ADAPTIVE CENTRAL CASCADES ADAPTIVE MANAGEMENT PARTNERSHIP MANAGEMENT PARTNERSHIP An intersection of state and federal organizations, sharing and focusing science and management resources to elevate our understanding of natural resources.
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CENTRAL CASCADES ADAPTIVE MANAGEMENT PARTNERSHIP An intersection of state and federal organizations, sharing and focusing science and management resources.
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CENTRAL CASCADES ADAPTIVE CENTRAL CASCADES ADAPTIVE MANAGEMENT PARTNERSHIPMANAGEMENT PARTNERSHIP
An intersection of state and federal organizations, sharing and focusing science and management resources to elevate our understanding of natural resources.
YOUNG STAND THINNING AND DIVERSITY STUDY
A management study evaluating the ecological, operational, social, and economic consequences of alternative methods of managing 30-50 year-old plantations.
TREATMENTS
Control (uncut, avg. 261 tpa) : Blue outline
Light thin (thinned to 105 tpa) : Yellow outline
Heavy thin (55 tpa) : Green outline
Light Thin with Gaps (same as light thin but with additional 0.5 acre gaps over 20% of the treatment) : Red Outline
The Young Stand Study targeted stands 35-50 years old
LIGHT THIN W/GAP TREATMENT
This treatment mimics mortality patterns of •small fires •root-rot outbreaks•Insects
Gaps planted
HEAVY THIN TREATMENT
This treatment opens the canopy dramatically allowing
•Rapid diameter growth
•More understory development
LIGHT THIN TREATMENT
This treatment is similar to a standard commercial thin.
• ~ 1/2 stems were removed
• 110 trees per acre left
MONITORING• Small Mammals pre twice; post 2 & 3, 11 & 12• Amphibians pre twice; post 11 + cover boards• Birds pre twice; post 3, 4, 5, 7, 11, 12 • Vegetation pre stand exams, post 1, 3, 5, 11 • Logging Costs post• Soil Impacts post• Snags/down wood post 2, 11• Stand Damage post• Public Perceptions post• Arthropods post 5 and 6
Chanterelle’s
MONITORING -- one year pre (1994), post 1996-7, 1999
KEY FINDING:• Chanterelle productivity significantly declined (but was
not eliminated) immediately after thinning • the level of decline was greater in the heavily thinned
stands than in those lightly thinned
NO DATA COLLECTED TO SEE IF RECOVERED OVER TIME
Chanterelle’s
1996 1997 1999 2001
MushroomsAv
g.C
hant
erel
les
per a
cre
0
100
200
300
400
Col 2 Col 2: 199 Col 2: 25 Col 2: 280 Col 2: 95 Col 2: 20 Col 2: 85 Col 2: 20 Col 2: 5 Col 2: 350 Col 2: 320 Col 2: 110