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Watershed analysis is a key document in guiding ecosystem-based forest management. The scope and detail of each analysis may range widely, but generally aim to report on the health and function of key ecosystem functions within a given watershed. Comprehensive watershed analysis determine historic and present conditions and assesses the effects of individual and cumulative human activities on a full range of natural resources (e.g. terrestrial and aquatic species, cultural, and scenic).
The watershed analysis is an interdisciplinary effort. IRM has contributed expertise in assessing forest conditions in several public lands watershed studies. Included in this work has been the characterization of pre-Anglo and present stand and landscape forest structural and compositional conditions, assessment of historic and current disturbance regimes and their interaction with the forest, and development of management trajectories to meet future desired conditions.
Services:
Vegetation analysis including:
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Historic Range of Variability Analysis
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Stand Reconstruction
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Snag/Coarse Wood Analysis
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Past and Present Fire Regime Analysis
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Stand and Landscape Level Silvicultural Prescriptions
Bandon Watershed Forest Stewardship Plan, City of Bandon
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In February 2003, IRM prepared a stewardship plan for the City of Bandon to develop a forest management strategy to maintain/improve water quality on public lands contained in the municipal watershed. IRM recommended best management practices for maintaining water flows and protecting soils, encouraging mature forest cover to reduce catastrophic fire danger, and maintain a well designed road system. |
Pistol River Watershed Assessment, Siskiyou National Forest, Sub-contractor to David Evans and Associates, per Region 6 Professional Services Contract
From November 2001 to February 2002, IRM prepared the vegetation analysis section of the Pistol River Watershed Assessment. Our analysis synthesized historic and current vegetation data, historic range of variability analyses, fuel and fire severity models, threatened and endangered species recovery plans, and other keystone indicator species management mandates into a comprehensive forest restoration plan. Recommendations included silvicultural prescriptions designed to restore key ecosystem processes and functions at both stand and landscape levels.
Malheur Watershed Assessment, Malheur National Forest, Sub-contractor to David Evans and Associates, per Region 6 Services Contract
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From November 1999-March 2000, IRM prepared the Vegetation Analysis Section of the Malheur River Headwaters Watershed Assessment. Our analysis synthesized historic and current vegetation data, historic range of variability analyses, fuel and fire severity models, threatened and endangered species recovery plans, and other keystone indicator species management mandates into a comprehensive forest restoration plan. Recommendations included silvicultural prescriptions designed to restore key ecosystem processes and functions at both stand and landscape levels. IRM used the Stand Visualization System (SVS) to project stand development pathways under different management scenarios for illustrative purposes in the document. |
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