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Full-Text Articles in Life Sciences
Economic And Social Impacts Of Wildfires And Invasive Plants In American Deserts: Lessons From The Great Basin, Mark W. Brunson, John Tanaka
Economic And Social Impacts Of Wildfires And Invasive Plants In American Deserts: Lessons From The Great Basin, Mark W. Brunson, John Tanaka
Articles
Research on the impacts of wildfire and invasive plants in rangelands has focused on biophysical rather than human dimensions of these environmental processes. We offer a synthetic perspective on economic and social aspects of wildfire and invasive plants in American deserts, focusing on the Great Basin because greater research attention has been given to the effects of cheatgrass expansion than to other desert wildfire/invasion cycles. We focus first on impacts at the level of the individual decision-maker, then on impacts experienced at the human community or larger socio-political scales. Economic impacts of wildfire differ from those of invasive grasses because …
Developing A Model Framework For Predicting Effects Of Woody Expansion And Fire On Ecosystem Carbon And Nitrogen In A Pinyon-Juniper Woodland, Benjamin M. Rau, Robin J. Tausch, Alicia Reiner, Dale W. Johnson, Jeanne C. Chambers, Robert R. Blank
Developing A Model Framework For Predicting Effects Of Woody Expansion And Fire On Ecosystem Carbon And Nitrogen In A Pinyon-Juniper Woodland, Benjamin M. Rau, Robin J. Tausch, Alicia Reiner, Dale W. Johnson, Jeanne C. Chambers, Robert R. Blank
Articles
Sagebrush-steppe ecosystems are one of the most threatened ecosystems in North America due to woodland expansion, wildfire, and exotic annual grass invasion. Some scientists and policy makers have suggested that woodland expansion will lead to increased carbon (C) storage on the landscape. To assess this potential we used data collected from a Joint Fire Sciences Program demonstration area to develop a Microsoft Excel™ based biomass, carbon, and nitrogen (N) spreadsheet model. The model uses input for tree cover, soil chemistry, soil physical properties, and vegetation chemistry to estimate biomass, carbon, and nitrogen accumulation on the landscape with woodland expansion. The …
Woodland Expansion's Influence On Belowground Carbon And Nitrogen In The Great Basin U.S., Benjamin M. Rau, Dale W. Johnson, Robert R. Blank, Robin J. Tausch, Bruce A. Roundy, Richard F. Miller, Todd G. Caldwell, Annmarie Lucchesi
Woodland Expansion's Influence On Belowground Carbon And Nitrogen In The Great Basin U.S., Benjamin M. Rau, Dale W. Johnson, Robert R. Blank, Robin J. Tausch, Bruce A. Roundy, Richard F. Miller, Todd G. Caldwell, Annmarie Lucchesi
Articles
Vegetation changes associated with climate shifts and anthropogenic disturbance can have major impacts on biogeochemical cycling and soils. Much of the Great Basin, U.S. is currently dominated by sagebrush (Artemisia tridentate (Rydb.) Boivin) ecosystems. Sagebrush ecosystems are increasingly influenced by pinyon (Pinus monophylla Torr. & Frém and Pinus edulis Engelm.) and juniper (Juniperus osteosperma Torr. and Juniperus occidentalis Hook.) expansion. Some scientists and policy makers believe that increasing woodland cover in the intermountain western U.S. offers the possibility of increased organic carbon (OC) storage on the landscape; however, little is currently known about the distribution of OC …
Revisiting Soil C And N Sampling: Quantitative Pits Vs. Rotary Cores, Benjamin M. Rau, April M. Melvin, Dale W. Johnson, Christine L. Goodale, Robert R. Blank, Guinevere Fredriksen, Watkins W. Miller, James D. Murphy, Donald E. Todd Jr., Roger F. Walker
Revisiting Soil C And N Sampling: Quantitative Pits Vs. Rotary Cores, Benjamin M. Rau, April M. Melvin, Dale W. Johnson, Christine L. Goodale, Robert R. Blank, Guinevere Fredriksen, Watkins W. Miller, James D. Murphy, Donald E. Todd Jr., Roger F. Walker
Articles
Increasing atmospheric carbon dioxide and its feedbacks with global climate have sparked renewed interest in quantifying ecosystem carbon (C) budgets, including quantifying belowground pools. Belowground nutrient budgets require accurate estimates of soil mass, coarse fragment content, and nutrient concentrations. It has long been thought that the most accurate measurement of soil mass and coarse fragment content has come from excavating quantitative soil pits. However, this methodology is labor intensive and time consuming. We propose that diamond-tipped rotary cores are an acceptable if not superior alternative to quantitative soil pits for the measurement of soil mass, coarse fragment content, C and …