Regional Ecosystem Office (REO) - Northwest Forest Plan

The Late-Successional/Old-Growth (LSOG) Monitoring Program conducts long-term monitoring of these forest types to determine the effectiveness of federal forest management on maintaining and restoring LSOG forest ecosystems to desired conditions on federal lands. Main objectives are to:

1. Track status and trend of amount and distribution of older forests in the Northwest Forest Plan area.
2. Determine what are the disturbances and stressors causing change in the amount and distribution of older forest classes.

Our monitoring uses remote sensed data from satellite imagery and analysis and modeling of forest inventory plot data to track annual status and trends of forest structure and species composition. Remote sensed and plot data of forest conditions provides the information needed for tracking losses and gains in older forest conditions from human and natural disturbances, such as timber harvesting, wildfire, and insect and disease.

• Science Findings: 21st Century Computing for 21st Century Forest Management

Contact Information

Reports

Time	Five-Year Monitoring Reports
25-Year	Davis, Raymond J.; Bell, David M.; Gregory, Matthew J.; Yang, Zhiqiang; Gray, Andrew N.; Healey, Sean P.; Stratton, Andrew E. 2022. Northwest Forest Plan—the first 25 years (1994–2018): status and trends of late-successional and old-growth forests. Gen. Tech. Rep. PNW-GTR-1004. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 82 p. External PDF File Google Earth Engine App
20-Year	Davis, Raymond J.; Ohmann, Janet L.; Kennedy, Robert E.; Cohen, Warren B.; Gregory, Matthew J.; Yang, Zhiqiang; Roberts, Heather M.; Gray, Andrew N.; Spies, Thomas A. 2015. Northwest Forest Plan–the first 20 years (1994-2013): status and trends of late-successional and old-growth forests. Gen. Tech. Rep. PNW-GTR-911. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 112 p. External PDF File
15-Year	Moeur, Melinda; Ohmann, Janet L.; Kennedy, Robert E.; Cohen, Warren B.; Gregory, Matthew J.; Yang, Zhiqiang; Roberts, Heather M.; Spies, Thomas A.; Fiorella, Maria 2011. Northwest Forest Plan–the first 15 years (1994–2008): status and trends of late-successional and old-growth forests. Gen. Tech. Rep. PNW-GTR-853. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 48 p. External PDF File
10-Year	Moeur, Melinda; Spies, Thomas A.; Hemstrom, Miles; Martin, Jon R.; Alegria, James; Browning, Julie; Cissel, John; Cohen, Warren B.; Demeo, Thomas E.; Healey, Sean; Warbington, Ralph. 2005. Northwest Forest Plan—the first 10 years (1994-2003): status and trend of late-successional and old-growth forest. Gen. Tech. Rep. PNW-GTR-646. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 142 p. External PDF File
Monitoring Plan	Hemstrom, Miles; Spies, Thomas; Palmer, Craig; Kiester, Ross; Teply, John; McDonald, Phil; Warbington, Ralph. 1998. Late-successional and old-growth forest effectiveness monitoring plan for the Northwest Forest Plan. Gen. Tech. Rep. PNW-GTR-438. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 37 p. External PDF File

For older reports see the document archive

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Data

Report Details
Fire Regimes Generalized fire regimes for the Northwest Forest Plan - Zipped File - 55 kB
20-Year Report Old-growth Structure Index - Zipped File - 114.46 MB Old-growth Structure Index 80 - Zipped File - 112.05 MB Old-growth Structure Index 200 - Zipped File - 74.38 MB
15-year Report Late-Successional/Old-Growth Forest (2006-2007) - Zipped File - 30.52 MB