Variability in Older Forest Structure in Western Oregon Nathan Poage USDA Forest Service PNW Research Station RMP Program Western Mensurationists’ Meeting Fortuna, California June 19, 2006 Report= Data=
Northwest Forest Plan Late-Successional Reserves (LSRs)7,533,000 ac Congressionally Reserved Areas7,320,600 ac Matrix3,975,300 ac Riparian Reserves2,627,500 ac Adaptive Management Areas1,521,800 ac Administrative Withdrawn Areas1,477,100 ac Total = 24,455,300 ac Land Use Allocations LSRs shown in yellow.
? What are “legitimate” structural targets for young, managed stands in Late-Successional Reserves? Current Structure ?? ?
OR090-TS (eug\tc85\e04388) and photo (d_postdoc\d_bigtree\d_airphoto\site_092\ jpg) Unit 1 (48 acres) Oregon Portland Poage and Tappeiner (2005) Tree species and size structure of old-growth forests in central western Oregon, USA. Forest Ecology and Management 204:
BLM District (04 = Eugene) Sale Number Sub-Sale Number Species Code (01 = Douglas-fir) Diameter Class (4 inch classes) Number of 16-foot Logs Log Grades (if graded) Number of Trees in Sub-Sale Fitting This Diameter and Log Grade Description
Species – Diameter Distributions