About
9
Publications
2,825
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Introduction
I am interested in microbial biogeochemistry and global change. I study how microbial communities respond and adapt to environmental perturbations such as fire disturbance, changes in redox conditions, temperature and pulsed precipitation dynamics in soils. I use a combination of soil biogeochemical assays, in situ gas flux measurements, stable isotope probing and molecular techniques (fluorometric enzyme assays, 16S and ITS marker gene analysis and metagenomes).
Current institution
Additional affiliations
May 2010 - August 2010
USDA Forest Service
Position
- Technician
Education
August 2008 - December 2013
Northern Arizona University
Field of study
- Biological Sciences
Publications
Publications (9)
Microbial communities influence and are influenced by environmental conditions that, together with the extracellular enzymes produced by soil microorganisms, control the rate of decomposition of organic matter in soil. Here, we aim to characterize the interaction of landscape position and depth on potential enzyme activities in a recently burned fo...
Soil profiles are rarely homogeneous. Resource availability and microbial abundances typically decrease with soil depth, but microbes found in deeper horizons are still important components of terrestrial ecosystems. By studying 20 soil profiles across the United States, we documented consistent changes in soil bacterial and archaeal communities wi...
Chemical stabilization of microbial-derived products such as extracellular enzymes (EE) onto mineral surfaces has gained attention as a possibly important mechanism leading to the persistence of soil organic carbon (SOC). While the controls on EE activities and their stabilization in the surface soil are reasonably well-understood, how these activi...
Soil microbial communities play critical roles in various ecosystem processes, but studies at a large spatial and temporal scale have been challenging due to the difficulty in finding the relevant samples in available data sets as well as the lack of standardization in sample collection and processing. The National Ecological Observatory Network (N...
It is a critical time to reflect on the National Ecological Observatory Network (NEON) science to date as well as envision what research can be done right now with NEON (and other) data and what training is needed to enable a diverse user community. NEON became fully operational in May 2019 and has pivoted from planning and construction to operatio...
Soil microbiomes are heterogeneous, complex microbial communities. Metagenomic analysis is generating vast amounts of data, creating immense challenges in sequence assembly and analysis. Although advances in technology have resulted in the ability to easily collect large amounts of sequence data, soil samples containing thousands of unique taxa are...
While most bacterial and archaeal taxa living in surface soils remain undescribed, this problem is exacerbated in deeper soils owing to the unique oligotrophic conditions found in the subsurface. Additionally, previous studies of soil microbiomes have focused almost exclusively on surface soils, even though the microbes living in deeper soils also...
Abstract: Forest catchments are important carbon sinks in the southwestern United States and are sensitive to changes in precipitation and fire disturbance. The responses of soil microbial communities and the enzymes that dictate the transformation of nutrients such as carbon (C), nitrogen (N), and phosphorus (P) have important implications for the...
