PPT-Microbial Respiration in Soil Surrounding Aspen Trees

Maria Rocco EBIO 4100 Winter Ecology Spring 2012 Mountain Research Station University of Colorado Boulder Outline Background Hypothesis Methods Results Analysis Conclusions Future Research. 1819 ANDREW B MOYES SARAH J GAINES ROLF T W SIEGWOLF DAVID R BOWLING University of UtahDepartment of Biology257 South1400 EastSalt Lake CityUT 84112USA and Paul Scherrer Institut5232Villigen PSISwitzerland ABSTRACT Carbon isotope ratios 13 C of h . 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; . of Amazon tree . stems greatly . exceeds local CO. 2. emission. Alon Angert. (1). , Jan . Muhr. . ). 2). , Robinson Negron Juarez. (3). , . Waldemar. . Alegria. . Muñoz. (4). , Guido Kraemer . Lauren . Kendle. Winter Ecology. Spring 2012. Background Information. An analysis of 60 species indicated that there were photosynthetic processes in the . bark. Aspen Trees had the highest level of bark chlorophyll . Reaction Velocity = A e. -. Ea. /RT. where,. A = pre-exponential factor, or y-. intercept. Ea. = activation energy of the substrate. R = universal gas constant. T = temperature, . o. K. Boone et al (2003) Nature 396:570-572.. 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.. 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 . Nave, L.E., N. Bader, and J.L. Klug. 25 June 2015. Project EDDIE: Soil Respiration. Project EDDIE Module 9, Version 1. . http://cemast.illinoisstate.edu/data-for-students/modules/soil-respiration.shtml. . Most forests are not too . hot. , or not too . cold. , and have moderate amounts of precipitation. . ALFISOL. Moderately Weathered. SPODOSOL. Sandy, Acidic. There are two main types of forests. . Pine forests have ashy white layers (. Elizabeth Golden. EBIO 4100, Winter Ecology, Spring 2013. Mountain Research Station, University of Colorado, Boulder. Introduction. Snow pack. Provides insulation . (Halfpenny and . Ozanne. 1989). . Lauren . Kendle. Winter Ecology. Spring 2012. Background Information. An analysis of 60 species indicated that there were photosynthetic processes in the . bark. Aspen Trees had the highest level of bark chlorophyll . Scott . Clingan. Winter Ecology Spring 2014. Terrestrial Carbon Cycle. Soil respiration estimated to account for 20-38% of annual biogenic CO. 2. emissions . (Scott 2002). Increased Respiration from global warming = lower carbon sequestration (positive feedback?). Page 1Soil respiration is a measure of carbon dioxide CO released from the soil from decomposition of soil organic matter SOM SOIL An Essential Link inthe Cycle of LifeFood OxygenSOILWater CarbonDio Objectives. Define: soil respiration and soil microbes. Explain the role of soil respiration in determining soil health. Diagram the role of soil respiration in the cycle of life on earth. List and explain inherent factors that affect soil respiration.