Western Geographic Science Center

Publications

Filter Total Items: 378
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Year Published: 2019

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...

Walker, Jessica J.; Soulard, Christopher E.; Petrakis, Roy E.

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Year Published: 2019

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...

Byrd, Kristin B.; Alvarez, P.; Sleeter, Benjamin; Flint, Lorraine E.; Cameron, D. Richard; Creque, J.

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Year Published: 2019

Case study: Thomas Fire

No abstract available.

Kreitler, Jason R.; East, Amy E.; Sankey, Joel B.; Tague, Christina (Naomi)
Kreitler, J., J.B. Sankey, A. East, and C. Tague. (2018)The Thomas Fire in Central Coast Regional Report. California’s Fourth Climate Change Assessment. Publication number: SUM-CCCA4-2018-006 https://www.energy.ca.gov/sites/default/files/2019-07/Reg%20Report-%20SUM-CCCA4-2018-006%20CentralCoast.pdf

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Year Published: 2019

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...

Selmants, Paul; Schweitzer, Jennifer A.; Adair, Karen L.; Holeski, Liza M.; Lindroth, Richard L; Hart, Stephen C.; Whitham, Thomas G.

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Year Published: 2019

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...

Nathan Thomas; Marc Simard; Edward Castaneda-Moya; Byrd, Kristin B.; Windham-Myers, Lisamarie; Azure Bevington; Robert Twilley

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Year Published: 2019

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...

Christine M. Albano; Meredith L. McClure; Shana E. Gross; Kitlasten, Wesley; Soulard, Christopher; Charles Morton; Justin Huntington

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Year Published: 2019

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...

McCarley, R; Smith, A.M.S; Kolden, C.A.; Kreitler, Jason R.
McCarley, TR, AMS Smith, CA Kolden, and J Kreitler. (2018) Evaluating the mid-infrared bi-spectral index for improved assessment of low-severity fire effects in a conifer forest. International Journal of Wildland Fire. https://doi.org/10.1071/WF17137

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Year Published: 2019

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)...

Oliphant, Adam; Thenkabail, Prasad S.; Teluguntla, Pardhasaradhi; Xiong, Jun; Gumma, Murali Krishna; Russell G. Congalton; Kamini Yadav

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Year Published: 2019

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...

Sleeter, Benjamin M.; David Marvin; D. Richard Cameron; Selmants, Paul; LeRoy Westerling; Kreitler, Jason R.; Colin Daniel; Liu, Jinxun; Wilson, Tamara

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Year Published: 2019

Modelling development of riparian ranchlands using ecosystem services at the Aravaipa Watershed, SE Arizona

This paper describes how subdivision and development of rangelands within a remote and celebrated semiarid watershed near the US-Mexico border might affect multiple ecohydrological services provided, such as recharge of the aquifer, water and sediment yield, water quality, flow rates and downstream cultural and natural resources. Specifically, we...

Norman, Laura; Villarreal, Miguel; Niraula, Rewati; Haberstich, Mark; Wilson, Natalie

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Year Published: 2019

Assessing hazards and risks at the Department of the Interior—A workshop report

On February 27–28, 2018, the U.S. Geological Survey and Department of the Interior (DOI) Office of Emergency Management (OEM) hosted a workshop to gather input from DOI subject matter experts (SMEs), resource managers, facility managers, emergency managers, and law enforcement personnel. Workshop goals were to (1) determine how DOI Bureaus and...

Wood, Nathan; Pennaz, Alice; Ludwig, Kristin; Jones, Jeanne; Henry, Kevin; Sherba, Jason; Ng, Peter; Marineau, Jason; Juskie, John
Wood, N., Pennaz, A., Ludwig, K., Jones, J., Henry, K, Sherba, J., Ng, P., Marineau, J., and Juskie, J., 2019, Assessing hazards and risks at the Department of the Interior—A workshop report: U.S. Geological Survey Circular 1453, 42 p., https://doi.org/10.3133/cir1453.

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Year Published: 2019

Distant neighbors: recent wildfire patterns of the Madrean Sky Islands of southwestern United States and northwestern Mexico

BackgroundInformation about contemporary fire regimes across the Sky Island mountain ranges of the Madrean Archipelago Ecoregion in the southwestern United States and northern Mexico can provide insight into how historical fire management and land use have influenced fire regimes, and can be used to guide fuels management, ecological restoration,...

Villarreal, Miguel L.; Haire, Sandra L.; Iniguez, Jose M.; Cortés Montaño, Citlali; Poitras, Travis B.