Lisa Tiemann UNH

Publications

Tiemann, L. K. and A. S. Grandy. In press. Mechanisms of soil carbon accrual and storage in bioenergy cropping systems. Global Change Biology Bioenergy

McDaniel, M. D, Tiemann, L. K. and A. S. Grandy. In press. Does agricultural crop diversity enhance soil microbial biomass and organic matter dynamics? a meta-analysis. Ecological Applications. http://dx.doi.org/10.1890/13-0616.1

Tiemann, L. K. and S. A. Billings. 2012. Tracking C and N flows through microbial biomass with increased soil moisture variability. Soil Biology and Biochemistry, 49, 11-22 (http://dx.doi.org/10.1016/j.soilbio.2012.01.030).

Tiemann, L. K. and S. A. Billings. 2011. Changes in variability of soil moisture alter microbial community C and N resource use. Soil Biology and Biochemistry, 43, 1837-1847 (http://dx.doi.org/10.1016/j.soilbio.2011.04.020).

Tiemann, L. K. and S. A. Billings. 2011. Indirect effects of nitrogen amendments on organic substrate quality increase enzymatic activity driving decomposition in a mesic grassland. Ecosystems 14: 234-247 (DOI: 10.1007/s10021-010-9406-6).

Tiemann, L. K. and S. A. Billings. 2008. Carbon controls on nitrous oxide production with changes in substrate availability in a North American grassland. Soil Science 173: 332-341 (DOI: 10.1097/SS.0b013e31816d1ea9).

Tiemann, L. K. and T. R. Seastedt. 2006. Study shows introduced thistle may facilitate growth of some native grasses (Colorado). Ecological Restoration 24: 58-59.

R. Campbell. In R. Campbell. 1985. Plant Microbiology.

Natural Resources and the Environment

Postdoctoral Researcher and SEES Fellow
Soil Ecology, Microbiology and Biogeochemistry

In my research I explore the interactions between microbial community genetic and functional diversity, how the environment regulates genetic and functional diversity and the transcription of functional genes and the resulting impacts on ecosystem services such as nitrogen and phosphorus cycling, soil organic matter formation and soil C storage.

How do microorganisms contribute to soil organic matter formation? What role does microbially derived soil organic matter, from by-products of decomposition and microbial necromass, play in determining soil fertility?

How does plant litter quality, complexity and diversity influence microbial physiology and efficiency and thus soil organic matter formation?

How does microbial community carbon and nitrogen resource use change under altered soil moisture regimes due to global climate change?

How do environmental parameters control gene regulatory networks and gene transcription rates in soil bacteria? More specifically, how do temperature, oxygen and nitrate concentrations in soil control denitrification gene expression and ultimately nitrous oxide release or reduction?