Publications

Autochthonous and allochthonous carbon cycling in a eutrophic flow-through wetland

Wetland environments are important sites for the cycling and retention of terrestrially derived organic matter and nutrients. Wetland treatment of agricultural runoff has been shown to improve water quality and promote carbon sequestration. However, …

Scale-dependency of LiDAR derived terrain attributes in quantitative soil-landscape modeling: Effects of grid resolution vs. neighborhood extent

Quantifying the spatial distribution of soil properties is essential for ecological and environmental modeling at the landscape scale. Terrain attributes are among the primary covariates in soil-landscape models due to their control on energy and …

Quantifying spatial variability and biogeochemical controls of ecosystem metabolism in a eutrophic flow-through wetland

Wetlands are highly dynamic ecosystems that exhibit large temporal and spatial gradients in biogeochemical and metabolic processes. While previous studies have documented temporal variability of wetland metabolism, very little is known regarding how …

Soil carbon cycling and sequestration in a seasonally saturated wetland receiving agricultural runoff

Abstract. The fate of organic carbon (C) lost by erosion is not well understood in agricultural settings. Recent models suggest that wetlands and other small water bodies may serve as important long-term sinks of eroded C, receiving \~30 \% of all …

Sulfide induced mobilization of wetland phosphorus depends strongly on redox and iron geochemistry

Constructed and restored wetland soils play a key role in the cycling and retention of nutrients from polluted surface waters. Elevated SO42-loading from irrigated agriculture, however, has been shown to affect boThthe availability and mobility of P …

Mitigating nonpoint source pollution in agriculture with constructed and restored wetlands

Nonpoint source pollution (NPSP) from agricultural runoff threatens drinking water quality, aquatic habitats, and a variety of other beneficial uses of water resources. Agricultural runoff often contains a suite of water-quality contaminants, such as …

Bioavailability and fate of phosphorus in constructed wetlands receiving agricultural runoff in the San Joaquin Valley, California

Elevated nutrient concentrations in agricultural runoff contribute to seasonal eutrophication and hypoxia in the lower portion of the San Joaquin River, California. Interception and filtration of agricultural runoff by constructed wetlands may …

Spatial relationships of phosphorus sorption in a seasonally saturated constructed wetland soil

Constructed wetlands can be important sinks of P in agricultural landscapes; however, the long-term ability of these systems to retain P often diminishes with time. This study used a spatially explicit statistical approach to characterize spatial …

Efficacy of constructed wetlands to mitigate non-point source pollution from irrigation tailwaters in the San Joaquin Valley, California, USA

The efficacy of using constructed wetlands (CWs) to sequester organic carbon and nutrients from irrigation tailwaters was studied in the San Joaquin Valley, California. Two CWs were monitored during the 2004 irrigation season, a new CW (W-1) and …