Restoration Considerations of Large Woody Debris in the Elwha River Nearshore, Olympic Peninsula, Washington

2014 ◽  
Vol 32 (3) ◽  
pp. 306-313 ◽  
Author(s):  
S. L. Rich ◽  
J. Anne Shaffer ◽  
M. J. Fix ◽  
J. O. Dawson
Keyword(s):  
Woody Debris ◽  
Large Woody Debris ◽  
Olympic Peninsula ◽  
Elwha River

Changes in the quantity and characteristics of large woody debris in streams of the Olympic Peninsula, Washington, U.S.A. (1982-1993)

1998 ◽  
Vol 55 (6) ◽  
pp. 1395-1407 ◽  
Author(s):  
Michael L McHenry ◽  
Eric Shott ◽  
Robert H Conrad ◽  
Glenn B Grette
Keyword(s):  
Woody Debris ◽  
Small Diameter ◽  
High Mobility ◽  
Decay Rates ◽  
Riparian Forests ◽  
Large Woody Debris ◽  
Olympic Peninsula ◽  
Old Growth ◽  
Second Growth ◽  
The Mean

We assessed the changes in large woody debris (LWD) abundance and composition at 28 sites in 27 low-gradient Olympic Peninsula streams between 1982 and 1993. The average number of pieces of debris was virtually identical (P = 0.98) in both years (50.7 versus 50.6). However, we found a significant (P <= 0.01) reduction in the total volume of LWD material in the stream sites surveyed (51.7 m3 ·100 m-1 in 1982 to 38.2 m3 ·100 m-1 in 1993). While the mean volume of second-growth derived LWD increased from 3.6 to 10.9 m3 ·100 m-1 (P < 0.01), the increase was insufficient to offset the loss of old-growth derived LWD. The mean volume of old-growth derived LWD for all sites decreased from 48.1 to 27.4 m3 ·100 m-1 between sample years (P < 0.01). The mean diameter of second-growth derived LWD was significantly larger in 1993 than in 1982, although still smaller than old-growth derived pieces. We measured a significant increase in the percentage of LWD pieces rated as highly decayed from 1982 to 1993. The results indicate that the loss of old-growth derived LWD following the removal of old-growth riparian forests is initially very rapid, followed by a slower rate of depletion associated with watershed destabilization. Inputs of LWD from second-growth riparian forests up to 73 years old were characterized by small diameter, high mobility, and high decay rates.

Effects of Native Plant Species, Mycorrhizal Inoculum, and Mulch on Restoration of Reservoir Sediment Following Dam Removal, Elwha River, Olympic Peninsula, Washington

2011 ◽  
Vol 19 (2) ◽  
pp. 251-260 ◽  
Author(s):  
Kerri L. Cook ◽  
Wesley W. Wallender ◽  
Caroline S. Bledsoe ◽  
Gregory Pasternack ◽  
Shrini K. Upadhyaya
Keyword(s):  
Plant Species ◽  
Dam Removal ◽  
Native Plant ◽  
Olympic Peninsula ◽  
Reservoir Sediment ◽  
Elwha River ◽  
Native Plant Species

Large Woody Debris Input and Its Influence on Channel Structure in Agricultural Lands of Southeast Brazil

2011 ◽  
Vol 48 (4) ◽  
pp. 750-763 ◽  
Author(s):  
Felipe Rossetti de Paula ◽  
Silvio Frosini de Barros Ferraz ◽  
Pedro Gerhard ◽  
Carlos Alberto Vettorazzi ◽  
Anderson Ferreira
Keyword(s):  
Woody Debris ◽  
Channel Structure ◽  
Large Woody Debris ◽  
Agricultural Lands ◽  
Southeast Brazil

scholarly journals Quantification of potential recruitment of large woody debris in mountain catchments considering the effects of vegetation on hydraulic and geotechnical bank erosion and shallow landslides

2018 ◽  
Vol 40 ◽  
pp. 02046 ◽  
Author(s):  
Eric Gasser ◽  
Andrew Simon ◽  
Paolo Perona ◽  
Luuk Dorren ◽  
Johannes Hübl ◽  
...  
Keyword(s):  
Woody Debris ◽  
Probabilistic Approach ◽  
Temporal Distribution ◽  
Bank Erosion ◽  
Shallow Landslides ◽  
Large Woody Debris ◽  
Correction Coefficient ◽  
Model Framework ◽  
Modelling Framework ◽  
Spatio Temporal

Large woody debris (LWD) exacerbates flood damages near civil structures and in urbanized areas and the awareness of LWD as a risk is becoming more and more relevant. The recruitment of “fresh” large woody debris has been documented to play a significant role of the total amount of wood transported during flood events in mountain catchments. Predominately, LWD recruitment due to hydraulic and geotechnical bank erosion and shallow landslides contribute to high volumes of wood during floods. Quantifying the effects of vegetation on channel and slope processes is extremely complex. This manuscript therefore presents the concepts that are being implemented in a new modelling framework that aims to improve the quantification of vegetation effects on LWD recruitment processes. One of the focuses of the model framework is the implementation of the effect of spatio-temporal distribution of root reinforcement in recruitment processes such as bank erosion and shallow landslides in mountain catchments. Further, spatio-temporal precipitation patterns will be considered using a probabilistic approach to account for the spatio-temporal precipitation variability to estimate a LWD recruitment correction coefficient. Preliminary results are herein presented and discussed in form of a case study in the Swiss Prealps.

Function and Distribution of Large Woody Debris

1998 ◽  
pp. 324-346 ◽  
Author(s):  
Robert E. Bilby ◽  
Peter A. Bisson
Keyword(s):  
Woody Debris ◽  
Large Woody Debris
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