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dc.contributor.supervisor Flanagan, Larry B.
dc.contributor.author Wilton, Emily
dc.date.accessioned 2015-05-04T19:54:07Z
dc.date.available 2015-05-04T19:54:07Z
dc.date.issued 2015
dc.identifier.uri https://hdl.handle.net/10133/3670
dc.description.abstract This study compared the effects of two different warming treatments (open-top chambers and infrared heaters) on the environmental conditions in native prairie grassland. Both treatments increased average air temperature, with infrared heaters providing a more consistent warming than open-top chambers, but also a more significant decrease in soil moisture. Additionally, the effects of warming on plant biomass and ecosystem CO2 exchange were examined. No significant effects of increased temperature were found, although 2013 had higher precipitation than normal and produced more aboveground biomass than average years, with correspondingly low δ13C and δ18O values. Finally, a concurrent study examined the seasonal variation in soil microbial activity, as controlled by the direct and indirect effects of soil temperature and soil moisture. Significant seasonal patterns were found in soil respiration, soil microbial biomass, extracellular enzyme activity and the species composition of the soil bacterial community. en_US
dc.language.iso en_CA en_US
dc.publisher Lethbridge, Alta. : University of Lethbridge, Dept. of Biological Sciences en_US
dc.relation.ispartofseries Thesis (University of Lethbridge. Faculty of Arts and Science) en_US
dc.subject infrared heaters en_US
dc.subject native prairie grassland en_US
dc.subject open-top chambers en_US
dc.subject seasonal patterns en_US
dc.subject soil microbes en_US
dc.title A comparison of two warming treatments and their effects on plant growth and ecosystem CO2 exchange, and a concurrent study of seasonal variation in the soil microbial community en_US
dc.type Thesis en_US
dc.publisher.faculty Arts and Sciences en_US
dc.publisher.department Department of Biological Sciences en_US
dc.degree.level Masters en_US
dc.proquest.subject 0425 en_US
dc.proquest.subject 0725 en_US
dc.proquest.subject 0481 en_US
dc.proquestyes Yes en_US
dc.embargo No en_US


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