Search Results - "Walker, Roger F"

The Long-Term Effects of Wildfire and Post-Fire Vegetation on Sierra Nevada Forest Soils by Watkins W. Miller, Benjamin M. Rau, Michelle McNulty, Roger F. Walker, Dale W. Johnson

“…This paper compares carbon (C) and nutrient contents in soils (Alfisols derived from andesite), forest floor and vegetation in a former fire (1960) and an…”
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The combined effects of thinning and prescribed fire on carbon and nutrient budgets in a Jeffrey pine forest by Johnson, Dale W., Murphy, James D., Walker, Roger F., Miller, Watkins W., Glass, D. W., Todd, Donald E.

“…• Both burning and harvesting cause carbon and nutrient removals from forest ecosystems, but few studies have addressed the combination of these effects. For a…”
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Dale W. Johnson, et al. The Long-Term Effects of Wildfire and Post-Fire Vegetation on Sierra Nevada Forest Soils. Forests 2012, 3, 398-416 by Watkins W. Miller, Brittany G. Johnson, Benjamin M. Rau, Michelle McNulty, Roger F. Walker, Dale W. Johnson

“…The authors would like to add a co-author “Brittany G. Johnson” as sixth author in the published paper [1], doi: 10.3390/f3020398, website:…”
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A Synthesis of Sierran Forest Biomass Management Studies and Potential Effects on Water Quality by Peter J. Weisberg, Roger F. Walker, Sarah L. Karam, Dale W. Johnson, Watkins W. Miller

“…The Lake Tahoe basin, located along the California and Nevada border between the Carson and Sierra Nevada mountain ranges, represents a complex forested…”
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Wildfire effects on forest carbon and nutrient budgets by Johnson, Dale, Murphy, James D., Walker, Roger F., Glass, Dallas W., Miller, Watkins W.

“…A wildfire burned through previously established research plots, allowing comparisons of pre- and post-fire nutrient pools and fluxes. The Gondola fire…”
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Mercury distribution in two Sierran forest and one desert sagebrush steppe ecosystems and the effects of fire by Engle, Mark A., Sexauer Gustin, Mae, Johnson, Dale W., Murphy, James F., Miller, Wally W., Walker, Roger F., Wright, Joan, Markee, Melissa

“…Mercury (Hg) concentration, reservoir mass, and Hg reservoir size were determined for vegetation components, litter, and mineral soil for two Sierran forest…”
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Promoting Forest Recovery on a Surface Mine Site With Nutritional Amendments by Walker, Roger F

“…Selected nutrient amendments were evaluated for their capacity to enhance growth and nutrition of Jeffrey pine (Pinus jeffreyi Grev. & Balf.) seedlings 3 yr…”
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Advancing Forest Cover Development on a High-Elevation Sierra Nevada Mine Site with Nutritional Amendments by Walker, Roger F

“…Selected nutrient amendments were evaluated for their capacity to enhance growth and nutrition of established but stunted Jeffrey pine (Pinus jeffreyi Grev. &…”
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Nutritional Augmentation of Jeffrey Pine Saplings on a Harsh Sierran Site by Walker, Roger F

“…Broadcast fertilization with an array of amendments was examined for its capacity to reinvigorate growth and enhance nutrition of a 12-yr-old Jeffrey pine…”
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Effects of Thinning, Residue Mastication, and Prescribed Fire on Soil and Nutrient Budgets in a Sierra Nevada Mixed-Conifer Forest by Johnson, Dale W., Walker, Roger F., Glass, Dallas W., Stein, Chad M., Murphy, James B., Blank, Robert R., Miller, Watkins W.

“…The effects of thinning followed by residue mastication (THIN), prescribed fire (BURN), and thinning plus residue mastication plus burning (T+B) on nutrient…”
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Revisiting Soil Carbon and Nitrogen Sampling: Quantitative Pits Versus Rotary Cores by Rau, Benjamin M, Melvin, April M, Johnson, Dale W, Goodale, Christine L, Blank, Robert R, Fredriksen, Guinevere, Miller, Watkins W, Murphy, James D, Todd, Donald E. Jr, Walker, Roger F

“…Increasing atmospheric carbon dioxide and its feedbacks with global climate have sparked renewed interest in quantifying ecosystem carbon (C) budgets,…”
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Postplanting Nutritional Augmentation of Jeffrey Pine Seedlings on an Infertile Sierran Site by Walker, Roger F.

“…Broadcast fertilization with an array of amendments was investigated for its capacity to stimulate growth and enhance nutrition of a three-year-old Jeffrey…”
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Prescribed fire effects on forest floor and soil nutrients in a Sierra Nevada forest by Murphy, J.D, Johnson, D.W, Miller, W.W, Walker, R.F, Blank, R.R

“…The objectives of this study were to quantify the effects of prescribed fire on forest floor C and nutrient content, soil chemical properties, and soil…”
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Spatial Analysis of a Large Magnitude Erosion Event Following a Sierran Wildfire by Carroll, E.M, Miller, W.W, Johnson, D.W, Saito, L, Qualls, R.G, Walker, R.F

“…High intensity wildfire due to long-term fire suppression and heavy fuels buildup can render watersheds highly susceptible to wind and water erosion. The 2002…”
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Water Relations in Sierra Nevada Mixed Conifer: Wildfire Effects and Species Distinctions by Walker, Roger F, Fecko, Robert M, Johnson, Dale W, Miller, Watkins W

“…An investigation of wildfire effects on water relations of Jeffrey pine (Pinus jeffreyi Grev. & Balf.) along with species comparisons of the water relations of…”
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Wildfire Effects on Understory Vegetation, Natural Regeneration, and Forest Floor Fuels in a Sierran Mixed Conifer Stand by Walker, Roger F, Fecko, Robert M, Johnson, Dale W, Miller, Watkins W

“…Wildfire effects on understory shrubs and herbs, regeneration of the seedling and sapling size classes, and downed and dead fuels were assessed in a mixed…”
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Mineral Nutrition in Sierra Nevada Mixed Conifer: Wildfire Effects, Species Distinctions, and Temporal Variation by Walker, Roger F., Fecko, Robert M., Johnson, Dale W., Miller, Watkins W.

“…An investigation of wildfire effects on mineral nutrition of Jeffrey pine (Pinus jeffreyi Grev. & Balf.) along with species comparisons of the nutrition of…”
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Evaluation of Mechanized Thinning and Prescribed Fire Effects on Long-Term Fuels Accumulations in Uneven-Aged Jeffrey Pine by Swim, Shannon L, Walker, Roger F, Johnson, Dale W, Fecko, Robert M, Miller, Watkins W

“…Forest thinnings implemented through cut-to-length and whole-tree harvesting followed by underburning were evaluated for their effects on long-term downed and…”
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Long-Term Growth Responses of a Jeffrey Pine Stand to Mechanized Thinning and Prescribed Fire by Swim, Shannon L, Walker, Roger F, Johnson, Dale W, Fecko, Robert M, Miller, Watkins W

“…Forest thinnings implemented with cut-to-length and whole-tree harvesting systems followed by underburning were evaluated for their effects on individual tree…”
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Bark Beetle Demography in a Jeffrey Pine Stand as Influenced by Mechanized Thinning and Prescribed Fire by Walker, Roger F, Swim, Shannon L, Johnson, Dale W, Miller, Watkins W, Fecko, Robert M

“…Forest thinnings implemented with cut-to-length and whole-tree harvesting systems followed by underburning were evaluated for their effects on bark beetle…”
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