Andrew Hursh

First Name: 
Andrew
Last Name: 
Hursh
Academic Year: 
AY2012-13
Graduate Program: 
Resource Conservation
College/University: 
University of Montana
Research/Scholarly Work: 
Soil respiration is a major component of the carbon cycle. The flux of carbon dioxide from soils is a major source of this gas to the atmosphere. This respiration is performed both autotrophically by plant roots and heterotrophically by microbes which decompose organic matter. Climate ecologists attempt to model global movements of gases like carbon dioxide, and mechanisms like heterotrophic respiration need to be better understood for these models to be accurate on such large scales. Environmental factors such as temperature and soil moisture affect rates of heterotrophic respiration, yet the parameters of these controls remain poorly understood. My research will focus on the dynamics of soil respiration during changing seasonal cycles and focus in particular on winter respiration and that which occurs beneath snow. As the climate changes, relative proportions snow and rain are shifting. Earlier spring melting, autumn rain-on-snow, and a diminished insulating snowpack will all affect soil respiration. Ideally manipulative studies of these effects will elucidate some of the controls on soil respiration at a local landscape scale, and can be squared with or better inform current global models.

Partners

MSU IoE Office

Montana State University
605 Leon Johnson Hall
Bozeman, MT 59717
(406) 994-2374
MSU Director: Cathy Whitlock

UM IoE Office

The Universityi of Montana

The University of Montana
Davidson Honors College
Missoula, MT 59812
(406) 243-4848
UM Director: Ric Hauer

Montana EPSCoR

Program Director:  Ray Callaway
Project Administrator: Todd Kipfer
University of Montana
Missoula, MT 59812
(406) 243-2617

Montana University System

Montana University System

Office of the Commissioner of Higher Education
2500 Broadway Street
Helena, MT 59620
406-444-6570