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Filtering by: Advisor Porter, J. David Academic Affiliation Crop and Soil Science Decade 2010-2019

An Examination of Factors Controlling the Activity of Ammonia- and Nitrite-oxidizers in Diverse Soils

Creator:

Giguere, Andrew T.

Abstract:

Nitrification is a critical step in the global nitrogen cycle involving the biological oxidation of ammonia (NH₃) to nitrite (NO₂⁻ ) and then to nitrate (NO₃⁻). The first step in nitrification is carried out by NH₃-oxidizing bacteria (AOB) and archaea (AOA), and the second by NO₂⁻-oxidizing bacteria (NOB). In addition...

Resource Type:

Dissertation

Full Text:

: _______________________________________________________________________ Peter J. Bottomley David D. Myrold Nitrification is a critical step
Soil community dynamics in sagebrush and cheatgrass-invaded ecosystems of the northern Great Basin

Creator:

DeCrappeo, Nicole M.

Abstract:

Sagebrush steppe ecosystems in the Great Basin have become increasingly threatened by the proliferation of cheatgrass (Bromus tectorum L.), an invasive annual grass. Diverse sagebrush and perennial bunchgrass landscapes can be converted to homogenous cheatgrass grasslands mainly through the effects of fire. Although the consequences of this conversion are well...

Resource Type:

Dissertation

Full Text:

Basin. Abstract approved: Peter J. Bottomley David D. Myrold