-
Article
An open system framework for integrating critical zone structure and function
The “critical zone” includes the coupled earth surface systems of vegetation, regolith and groundwater that are essential to sustaining life on the planet. The function of this zone is the result of complex in...
-
Article
The influence of goethite and gibbsite on soluble nutrient dynamics and microbial community composition
Iron and aluminum (oxyhydr)oxides are ubiquitous in the soil environment and have the potential to strongly affect the properties of dissolved organic matter. We examined the effect of oxide surfaces on solubl...
-
Article
Soil organic carbon partitioning and Δ14C variation in desert and conifer ecosystems of southern Arizona
Soils are significant terrestrial carbon stores yet the mechanisms that stabilize organic carbon in mineral soil remain poorly constrained. Here, we identified climate and topographic controls on soil organic ...
-
Article
Beyond clay: towards an improved set of variables for predicting soil organic matter content
Improved quantification of the factors controlling soil organic matter (SOM) stabilization at continental to global scales is needed to inform projections of the largest actively cycling terrestrial carbon poo...
-
Article
A net ecosystem carbon budget for snow dominated forested headwater catchments: linking water and carbon fluxes to critical zone carbon storage
Climate-driven changes in carbon (C) cycling of forested ecosystems have the potential to alter long-term C sequestration and the global C balance. Prior studies have shown that C uptake and partitioning in re...
-
Article
Improving understanding of soil organic matter dynamics by triangulating theories, measurements, and models
Soil organic matter (SOM) turnover increasingly is conceptualized as a tension between accessibility to microorganisms and protection from decomposition via physical and chemical association with minerals in e...