Publications
Filter Total Items: 488
Spatial and temporal distribution of bacterial indicators and microbial-source tracking within Tumacácori National Historical Park and the upper Santa Cruz River, southern Arizona and northern Mexico, 2015–2016
Tumacácori National Historical Park (TUMA) in southern Arizona protects the culturally important Mission San José de Tumacácori, while also managing a part of the ecologically diverse riparian corridor of the Santa Cruz River. The quality of the water flowing through depends solely on upstream watershed activities, and among the water-quality issues concerning TUMA is the microbiological pathogens
Authors
Nicholas V. Paretti, Christopher M. Kephart, Thomas J. Porter, Edyth Hermosillo, Jay R. Cederberg, Justine P. Mayo, Bruce Gungle, Alissa L. Coes, Rachel S. Tucci, Laura M. Norman
Integrating stream gage data and Landsat imagery to complete time-series of surface water extents in Central Valley, California
Accurate monitoring of surface water location and extent is critical for the management of diverse water resource phenomena. The multi-decadal archive of Landsat satellite imagery is punctuated by missing data due to cloud cover during acquisition times, hindering the assembly of a continuous time series of inundation dynamics. This study investigated whether streamflow volume measurements could b
Authors
Jessica J. Walker, Christopher E. Soulard, Roy E. Petrakis
Scenarios of climate adaptation potential on protected working lands from management of soils
Management of protected lands may enhance ecosystem services that conservation programs were designed to protect. Practices that build soil organic matter (SOM) on agricultural lands also increase soil water holding capacity, potentially reducing climatic water deficit (CWD), increasing actual evapotranspiration (AET) and increasing groundwater recharge (RCH). We developed nine spatially-explicit
Authors
Kristin B. Byrd, P. Alvarez, Benjamin Sleeter, Lorraine E. Flint, D. Richard Cameron, J. Creque
A meta-analysis of global crop water productivity of three leading world crops (wheat, corn, and rice) in the irrigated areas over three decades
The overarching goal of this study was to perform a comprehensive meta-analysis of irrigated agricultural Crop Water Productivity (CWP) of the world’s three leading crops: wheat, corn, and rice based on three decades of remote sensing and non-remote sensing-based studies. Overall, CWP data from 148 crop growing study sites (60 wheat, 43 corn, and 45 rice) spread across the world were gathered from
Authors
Daniel J. Foley, Prasad Thenkabail, Itiya Aneece, Pardhasaradhi Teluguntla, Adam Oliphant
Case study: Thomas Fire
No abstract available.
Authors
Jason R. Kreitler, Amy E. East, Joel B. Sankey, Christina (Naomi) Tague
Genetic variation in tree leaf chemistry predicts the abundance and activity of autotrophic soil microorganisms
Genetic variation in the chemistry of plant leaves can have ecosystem-level consequences. Here we address the hypothesis that genetic variation in foliar condensed tannins along a Populus hybridization gradient influence soil ammonia oxidizers, autotrophic microorganisms that perform the first step of nitrification and are not dependent on carbon derived from plant photosynthesis. Evidence that ge
Authors
Paul Selmants, Jennifer A. Schweitzer, Karen L. Adair, Liza M. Holeski, Richard L Lindroth, Stephen C. Hart, Thomas G. Whitham
Planners tool up for the next big one
Data, modeling, risk analysis, and hazard scenario resources can help put earthquake mitigation efforts on firmer ground. Article discusses general earthquake information and findings of the HayWired scenario for a planner audience.
Authors
Laurie Johnson, Anne M. Wein
High-Resolution mapping of biomass and distribution of marsh and forested wetlands in southeastern coastal Louisiana
This study estimates herbaceous and forested wetland coverage and aboveground biomass (AGB) within the Atchafalaya and Terrebonne coastal basins representing sediment rich and sediment poor coastal regions of southern Louisiana. Louisiana coastal wetlands account for approximately one third (37%) of the estuarine wetland area in the conterminous United States, yet the spatial distribution of their
Authors
Nathan Thomas, Marc Simard, Edward Castaneda-Moya, Kristin B. Byrd, Lisamarie Windham-Myers, Azure Bevington, Robert Twilley
Spatial patterns of meadow sensitivities to interannual climate variability in the Sierra Nevada
Conservation of montane meadows is a high priority for land and water managers given their critical role in buffering the effects of climate variability and their vulnerability to increasing temperatures and evaporative demands. Recent advances in cloud computing have provided new opportunities to examine ecological responses to climate variability over the past few decades, and at large spatial s
Authors
Christine M. Albano, Meredith L. McClure, Shana E. Gross, Wesley Kitlasten, Christopher Soulard, Charles Morton, Justin Huntington
Evaluating the mid-infrared bi-spectral index for improved assessment of low-severity fire effects in a conifer forest
Remote sensing products provide a vital understanding of wildfire effects across a landscape, but detection and delineation of low- and mixed-severity fire remains difficult. While data provided by the Monitoring Trends in Burn Severity project (MTBS) are frequently used to assess severity in the United States, alternative indices can offer improvement to the measurement of low-severity fire effec
Authors
R McCarley, A.M.S Smith, C.A. Kolden, Jason R. Kreitler
Mapping cropland extent of Southeast and Northeast Asia using multi-year time-series Landsat 30-m data using Random Forest classifier on Google Earth Engine
Cropland extent maps are useful components for assessing food security. Ideally, such products are a useful addition to countrywide agricultural statistics since they are not politically biased and can be used to calculate cropland area for any spatial unit from an individual farm to various administrative unites (e.g., state, county, district) within and across nations, which in turn can be used
Authors
Adam Oliphant, Prasad S. Thenkabail, Pardhasaradhi Teluguntla, Jun Xiong, Murali Krishna Gumma, Russell G. Congalton, Kamini Yadav
Effects of 21st century climate, land use, and disturbances on ecosystem carbon balance in California
Terrestrial ecosystems are an important sink for atmospheric carbon dioxide (CO2), sequestering ~30% of annual anthropogenic emissions and slowing the rise of atmospheric CO2. However, the future direction and magnitude of the land sink is highly uncertain. We examined how historical and projected changes in climate, land use, and ecosystem disturbances affect the carbon balance of terrestrial eco
Authors
Benjamin M. Sleeter, David Marvin, D. Richard Cameron, Paul Selmants, LeRoy Westerling, Jason R. Kreitler, Colin Daniel, Jinxun Liu, Tamara Wilson