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Variability in Older Forest Structure in Western Oregon Nathan Poage USDA Forest Service PNW Research Station RMP Program Western Mensurationists’ Meeting.

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Presentation on theme: "Variability in Older Forest Structure in Western Oregon Nathan Poage USDA Forest Service PNW Research Station RMP Program Western Mensurationists’ Meeting."— Presentation transcript:

1 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=http://fresc.usgs.gov/products/papers/1445_Poage.pdf Data=http://fresc.usgs.gov/ArcIMS/Website/lsog/viewer.htm

2 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Areas7,320,600 ac Matrix3,975,300 ac Riparian Reserves2,627,500 ac Adaptive Management Areas1,521,800 ac Administrative Withdrawn Areas1,477,100 ac Total = 24,455,300 ac Land Use Allocations LSRs shown in yellow.

3 ? What are “legitimate” structural targets for young, managed stands in Late-Successional Reserves? Current Structure ?? ?

4 OR090-TS86-014 (eug\tc85\e04388) and photo (d_postdoc\d_bigtree\d_airphoto\site_092\2000-13-43.1-2.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 204:329-343.

5 888888888804388 010178000095 0210 2 04388011 12 2 6 6 3 04388011 12 3 6 6 6 2 04388011 16 3 5 6 6 1 04388011 16 4 5 6 6 6 2 04388011 16 6 5 6 6 6 6 6 1 04388011 20 4 5 5 6 6 1 04388011 20 5 5 5 5 6 6 2 04388011 20 6 5 5 5 6 6 6 4 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

6 Species – Diameter Distributions


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