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Full-Text Articles in Life Sciences
Monitoring Old Growth In Frequent-Fire Landscapes, Carl E. Fiedler, Peter Friederici, Mark Petruncio
Monitoring Old Growth In Frequent-Fire Landscapes, Carl E. Fiedler, Peter Friederici, Mark Petruncio
Forest Management Faculty Publications
In this article, we discuss how to monitor the structural and functional attributes of old growth, as well as its associated plant communities and wildlife, both to determine the possible need for treatment and to assess post-treatment progress toward desired conditions. Monitoring can be used to detect conditions (or agents) that threaten existing old growth and also to document indicators of healthy, functioning old-growth systems.
Managing For Old Growth In Frequent-Fire Landscapes, Carl E. Fiedler, Peter Friederici, Mark Petruncio, Charles Denton, W. David Hacker
Managing For Old Growth In Frequent-Fire Landscapes, Carl E. Fiedler, Peter Friederici, Mark Petruncio, Charles Denton, W. David Hacker
Forest Management Faculty Publications
There is no one-size-fits-all approach to managing frequent-fire, old-growth forests. However, there are general guidelines to follow: 1) set objectives for both structure (tree density, diameter distribution, tree species composition, spatial arrangement, amount of coarse woody debris) and function (nutrient cycling, desired tree species regeneration); 2) prioritize treatments according to ecological, economic, and social needs and risks; 3) identify the potential treatments (natural fire, prescribed fire, silvicultural cutting) that best meet the objectives and scale of the project; and 4) implement the treatment (s). We discuss each of these guidelines in this article.
Analysis Of Flow Competence In An Alluvial Gravel Bed Stream, Dupuyer Creek, Montana, Andrew C. Whitaker, Donald F. Potts
Analysis Of Flow Competence In An Alluvial Gravel Bed Stream, Dupuyer Creek, Montana, Andrew C. Whitaker, Donald F. Potts
Forest Management Faculty Publications
Critical shear stress and unit discharge flow competence models were tested against coarse bed load data from Dupuyer Creek, Montana, United States. Maximum particle sizes sampled (Dmax) and D-50 to D-90 percentiles in the bed load grain size distribution were well correlated with both shear stress and unit discharge. Bed load grain sizes became coarser with increasing flow strength. For the D-max curve, Shields dimensionless parameter for the surface D-50 was estimated at 0.044, and the exponent for relative particle size (D-i/ D-50) was - 0.59. In the unit discharge criterion the critical flow to entrain the surface D50 was …