Estimating Large Woody Debris Recruitment From Adjacent Riparian Areas
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Author | : Kathleen P. Minor |
Publisher | : |
Total Pages | : 68 |
Release | : 1997 |
Genre | : Forest ecology |
ISBN | : |
Large woody debris recruitment to streams from adjacent riparian forests influences stream channel morphology, sediment routing, and fish habitat. A mathematical model was developed to 1) determine whether the trees in a stand adjacent to a stream, upon falling, would provide large woody debris of a specified size to the stream and 2) determine the volume of trees, upon falling, that reach a stream over a specific time period. The model considered stand and topographic parameters such as tree size, tree form, distance from the stream, hill slope gradient, stream gradient, stream width, riparian buffer width, and basal area of the stand. The likelihood that a tree of a specified size will reach the channel is the probability the tree will fall in a given direction evaluated at 1 degree azimuths from 0 to 360 degrees multiplied by the probability it is tall enough to reach the stream. Volume estimates were calculated by multiplying estimated tree volumes by the joint probabilities. A test riparian polygon comprised of Douglas-fir (Pseudotsuga menziesii {Mirb.] Franco) was selected to illustrate how the model predicts large woody debris recruitment of both key pieces and volume to an adjacent stream. Estimating large woody debris recruitment to streams from adjacent riparian stands over several decades may be useful in determining effectiveness of various configurations of riparian buffers and provide assistance in the prediction of the future quality of aquatic and terrestrial habitats in riparian zones. This model provides one way to estimate where large wood is coming from within a riparian leave area and could be useful in determining necessary widths for riparian areas that are intended to provide large woody debris recruitment over time.
Author | : Don C. Bragg |
Publisher | : |
Total Pages | : 44 |
Release | : 2000 |
Genre | : Riparian forests |
ISBN | : |
As our understanding of the importance of large woody debris (LWD) evolves, planning for its production in riparian forest management is becoming more widely recognized. This report details the development of a model (CWD, version 1.4) that predicts LWD inputs, including descriptions of the field sampling used to parameterize parts of the model, the theoretical and practical underpinnings of the model's structure, and a case study of CWD's application to a stream in Wyoming's Bridger-Teton National Forest.
Author | : |
Publisher | : |
Total Pages | : 966 |
Release | : 2002 |
Genre | : Coarse woody debris |
ISBN | : |
Author | : American Water Resources Association. Summer Specialty Conference |
Publisher | : |
Total Pages | : 634 |
Release | : 2000 |
Genre | : Riparian areas |
ISBN | : |
Author | : Lee H. MacDonald |
Publisher | : |
Total Pages | : 188 |
Release | : 1991 |
Genre | : Forest hydrology |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 484 |
Release | : 1996 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 298 |
Release | : 1994 |
Genre | : Forest management |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 974 |
Release | : 1978 |
Genre | : Forests and forestry |
ISBN | : |
Author | : Wayne G. Landis |
Publisher | : CRC Press |
Total Pages | : 336 |
Release | : 2004-11-15 |
Genre | : Science |
ISBN | : 9780203498354 |
As debates over how relative risk can be used to shape landscape-scale environmental management intensify, Regional-Scale Risk Assessment demonstrates the capabilities of RRM using nine case studies in the Pacific Northwest, Pennsylvania, Brazil, and Tasmania. The authors use a process of ranking and filters to interrelate different kinds of risks
Author | : |
Publisher | : |
Total Pages | : 162 |
Release | : 1994 |
Genre | : |
ISBN | : |