EFFECTIVENESS OF TIMBER HARVEST PRACTICES FOR CONTROLLING SEDIMENT RELATED WATER QUALITY IMPACTS<sup>1</sup>

Rashin, Edward B.; Clishe, Casey J.; Loch, Andrew T.; Bell, Jason

doi:10.1111/j.1752-1688.2006.tb05303.x

Cited by 5 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Forest practices have been developed to reduce the impact of harvest activities on sediment nonpoint source (NPS) delivery (Brown, Brown, & Binkley, 1993;Lee, Smyth, & Boutin, 2004). Prudent practices require a significantly reduced amount of traffic within close proximity to stream channels, effectively limiting source areas and flow paths that may deliver sediment (Rashin, Clishe, Loch, & Bell, 2006;Ward & Jackson, 2004). Best management practices (BMPs) use riparian zones as harvest buffers to mitigate upland source areas from affecting downstream waterbodies by relying upon undisturbed soils and vegetation in the buffer to infiltrate surface runoff and increase sediment deposition (Clinnick, 1985;Litschert & MacDonald, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of post‐fire salvage logging stream buffer management for hillslope erosion in theU.S.Inland Northwest Mountains

Robichaud

Bone

Lewis

et al. 2020

Hydrological Processes

View full text Add to dashboard Cite

Active wildfire seasons in the western U.S. warrant the evaluation of post‐fire forest management strategies. Ground‐based salvage logging is often used to recover economic loss of burned timber. In unburned forests, ground‐based logging often follows best management practices by leaving undisturbed areas near streams called stream buffers. However, the effectiveness of these buffers has not been tested in a post‐wildfire setting. This experiment tested buffer width effectiveness with a novel field‐simulated rill experiment using sediment‐laden runoff (25 g/L) released over 40 min at evenly timed flow rates (50, 100 and 150 L/min) to measure surface runoff travel length and sediment concentration under unburned and high and low soil burn severity conditions at 2‐, 10‐ and 22‐month post‐fire. High severity areas 2‐month post‐fire had rill lengths of up to 100 m. Rill length significantly decreased over time as vegetation regrowth provided ground cover. Sediment concentration and sediment dropout rate also varied significantly by soil burn severity. Sediment concentrations were 19 g/L for the highest flow 2‐month post‐fire and reduced to 6.9–14 g/L 10‐month post‐fire due to abundant vegetation recovery. The amount of sediment dropping out of the flow consistently increased over the study period with the low burn severity rate of 1.15 g L−1 m−1 approaching the unburned rate of 1.29 g L−1 m−1 by 2‐year post‐fire. These results suggest that an often‐used standard, 15 m buffer, was sufficient to contain surface runoff and reduce sediment concentration on unburned sites, however buffers on high burn severity sites need to be eight times greater (120 m) immediately after wildfire and four times greater (60 m) 1‐year post‐fire. Low burn severity areas 1‐year post‐fire may need to be only twice the width of an unburned buffer (30 m), and 2‐year post‐fire these could return to unburned widths.

show abstract

Section: Introductionmentioning

confidence: 99%

Effectiveness of post‐fire salvage logging stream buffer management for hillslope erosion in theU.S.Inland Northwest Mountains

Robichaud

Bone

Lewis

et al. 2020

Hydrological Processes

View full text Add to dashboard Cite

show abstract

A Functional Approach to Riparian Area Delineation Using Geospatial Methods

Holmes¹,

Goebel

2011

Journal of Forestry

View full text Add to dashboard Cite

Riparian areas are diverse ecotones that provide numerous, valuable ecosystem functions. However, many riparian delineation methods use a fixed minimum width to create a riparian buffer or setback that may not adequately protect actual riparian function. A method for riparian area delineation across landscapes is presented that incorporates riparian function and moves beyond the fixed-width buffer approach. Using geospatial data and tools, riparian areas were delineated functionally for the Cuyahoga Valley National Park in northeastern Ohio and compared to fixed-width buffers in terms of extent and protection of riparian function. We suggest that functional riparian area delineation be incorporated into watershed management planning to improve protection and restoration of the valuable ecological functions provided by riparian areas across landscapes.

show abstract

Direct and Indirect Effects of Forest Harvesting on Sediment Yield in Forested Watersheds of the United States

McEachran

Karwan

Slesak

2020

J American Water Resour Assoc

View full text Add to dashboard Cite

Managed forests generally produce high water quality, but degradation is possible via sedimentation if proper management is not implemented during forest harvesting. To mitigate harvesting effects on total watershed sediment yield, it is necessary to understand all processes that contribute to these effects. Forest harvesting best management practices (BMPs) focus almost exclusively on overland sediment sources, whereas in‐and‐near stream sources go unaddressed although they can contribute substantially to sediment yield. Thus, we propose a new framework to classify forest harvesting effects on stream sediment yield according to their direct and indirect processes. Direct effects are those caused by erosion and sediment delivery to surface water from overland sources (e.g., forest roads). Indirect effects are those caused by a shift in hydrologic processes due to tree removal that accounts for increases in subsurface and surface flows to the stream such that alterations in water quality are not predicated upon overland sediment delivery to the stream, but rather in‐stream processes. Although the direct/indirect distinction is often implicit in forest hydrology studies, we have formalized it as a conceptual model to help identify primary drivers of sediment yield after forest harvesting in different landscapes. Based on a literature review, we identify drivers of these effects in five regions of the United States, discuss current forest management BMPs, and identify research needs.

show abstract

EFFECTIVENESS OF TIMBER HARVEST PRACTICES FOR CONTROLLING SEDIMENT RELATED WATER QUALITY IMPACTS¹

Cited by 5 publications

References 34 publications

Effectiveness of post‐fire salvage logging stream buffer management for hillslope erosion in theU.S.Inland Northwest Mountains

Effectiveness of post‐fire salvage logging stream buffer management for hillslope erosion in theU.S.Inland Northwest Mountains

A Functional Approach to Riparian Area Delineation Using Geospatial Methods

Direct and Indirect Effects of Forest Harvesting on Sediment Yield in Forested Watersheds of the United States

Contact Info

Product

Resources

About

EFFECTIVENESS OF TIMBER HARVEST PRACTICES FOR CONTROLLING SEDIMENT RELATED WATER QUALITY IMPACTS1

Cited by 5 publications

References 34 publications

Effectiveness of post‐fire salvage logging stream buffer management for hillslope erosion in theU.S.Inland Northwest Mountains

Effectiveness of post‐fire salvage logging stream buffer management for hillslope erosion in theU.S.Inland Northwest Mountains

A Functional Approach to Riparian Area Delineation Using Geospatial Methods

Direct and Indirect Effects of Forest Harvesting on Sediment Yield in Forested Watersheds of the United States

Contact Info

Product

Resources

About

EFFECTIVENESS OF TIMBER HARVEST PRACTICES FOR CONTROLLING SEDIMENT RELATED WATER QUALITY IMPACTS¹