PPT-Subalpine soil microbial response to compaction of snow pack by snowmobiles

Elizabeth Golden EBIO 4100 Winter Ecology Spring 2013 Mountain Research Station University of Colorado Boulder Introduction Snow pack Provides insulation Halfpenny and Ozanne 1989 . Compaction of oncrete Compaction of concrete is the process adopted for expelling the entrapped air from the concrete Method for compacting concrete Hand compaction Formwork vibrator Table vibrator Compaction. Compaction. To improve the density and other properties of soil. Increases the solid density improves strength. Lowers its permeability. Reduces future settlement. Maximum . D. ry . D. ensity. What is Soil Compaction. What is soil compaction?. Compaction occurs when a force compresses the soil and pushes air and water out of it so that it becomes more dense. Compaction is more severe when the soil is wet and less able to withstand compression.. Topic. COMPACTION. Presented to . Dr. . Ayub. . Elahi. Presented by Group leader.. . M.Zeeshan. . haider. . yousaf. Zia. # 14. . Haider. . . BIOLOGY AND . BIOCHEMISTRY. J. O. . Fening. PhD. COURSE OBJECTIVES. Expose students to theoretical and practical concepts of soil microbial flora and fauna . The ecology and role of soil flora and fauna in soil health improvement; . Kyle, Catey, Emily, Kobe, Josh, Mary, Susannah, Chris, and Ashley. Soil. utions. Salinity. Compaction. Erosion. Lead. At the UVM campus there is a lot of snow. Road salt is used to melt it and create safer walking conditions.. New York State Department of Transportation. 12/14/2010. Problem Description. With the installation of low wattage LED traffic signal modules replacing 135-150 Watt incandescent lamps, there is insufficient heat created by the LEDs to prevent snow from sticking to the lens of the LED modules.. Background. Despite . wide recognition that microbial physiology and soil mineral interactions facilitate the formation of stable SOM, this theoretical insight has not been adequately represented in process based models. Preliminary results suggest that, compared with models based on more traditional concepts (e.g., models that implicitly represent microbial activity like CENTURY or RothC), global models that explicitly represent microbial activity generate markedly divergent projections about the fate of soil C in a changing world.. By Erik and Jared. WHO IS THE INTERLAKE SNOW TRACKERS. The . I. nterlake Snow . T. rackers is a organization that maintains trails and warm up shacks in their area. People in the Gimli area that have a snowmobile, use these trails to go to the lake for ice fishing, hunting in the wooded areas, to traveling to communities, and for recreational purposes (remember that is illegal for snowmobiles to drive on public roads). They maintain over 600 km of snowmobile trails. . Serenia Larrison. Background. Global trend for wood demand is increasing 1-2% every year. Nearly 1.1 billion tree seedlings are planted in the US every year. Approximately 80% of those are loblolly seedlings planted in the southeast. ABSTRACT. Soils are the largest terrestrial carbon sink, therefore increasing soil carbon stability . has implications for atmospheric CO. 2. and climate change. Adding . C to soils from plant residue could increase soil C, however increasing soil C pools requires understanding the response of soil microbes that . Mango Chia-Tso Chao (. 趙家佐. ). EE, NCTU, Hsinchu Taiwan. Outline. Introduction to Scan-based Testing. Input-Pattern Compression. Type of compressions. Compression schemes. Low-power decompression. Maria Rocco. EBIO 4100: Winter Ecology: Spring 2012. "Mountain Research Station, University of Colorado, Boulder". Outline. Background. Hypothesis. Methods. Results. Analysis. Conclusions. Future Research. with bucket teeth, scarifiers, and disc harrows.Several passes are made until the soil is dryenough forcompaction. Bymixing a smallarea first, it ispossible todetermine if the desired degree of dryin