Western Geographic Science Center

Publications

Filter Total Items: 387
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Year Published: 2018

Effects of contemporary land-use and land-cover change on the carbon balance of terrestrial ecosystems in the United States

Changes in land use and land cover (LULC) can have profound effects on terrestrial carbon dynamics, yet their effects on the global carbon budget remain uncertain. While land change impacts on ecosystem carbon dynamics have been the focus of numerous studies, few efforts have been based on observational data incorporating multiple ecosystem types...

Sleeter, Benjamin M.; Liu, Jinxun; Daniel, Colin; Rayfield, Bronwyn; Sherba, Jason T.; Hawbaker, Todd J.; Zhu, Zhiliang; Selmants, Paul; Loveland, Thomas R.
Sleeter, B.M., et al., 2018, Effects of contemporary land-use and land-cover change on the carbon balance of terrestrial ecosystems in the United States, Environmental Research Letters, doi: https://doi.org/10.1088/1748-9326/aab540

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Year Published: 2018

Evaluating and monitoring forest fuel treatments using remote sensing applications in Arizona, U.S.A.

The practice of fire suppression across the western United States over the past century has led to dense forests, and when coupled with drought has contributed to an increase in large and destructive wildfires. Forest management efforts aimed at reducing flammable fuels through various fuel treatments can help to restore frequent fire regimes and...

Petrakis, Roy; Villarreal, Miguel L.; Wu, Zhuoting; Hetzler, Robert; Middleton, Barry R.; Norman, Laura M.
Petrakis, R.E., Villarreal, M.L., Wu, Z., Hetzler, R., Middleton, B.R., Norman, L.M., 2018. Evaluating and monitoring forest fuel treatments using remote sensing applications in Arizona, U.S.A. Forest Ecology and Management 413, 48–61.

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Year Published: 2018

Identifying optimal remotely-sensed variables for ecosystem monitoring in Colorado Plateau drylands

Water-limited ecosystems often recover slowly following anthropogenic or natural disturbance. Multitemporal remote sensing can be used to monitor ecosystem recovery after disturbance; however, dryland vegetation cover can be challenging to accurately measure due to sparse cover and spectral confusion between soils and non-photosynthetic vegetation...

Poitras, Travis B.; Villarreal, Miguel L.; Waller, Eric K.; Nauman, Travis W.; Miller, Mark E.; Duniway, Michael C.

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Year Published: 2018

Analysis of vegetation recovery surrounding a restored wetland using the normalized difference infrared index (NDII) and normalized difference vegetation index (NDVI)

Watershed restoration efforts seek to rejuvenate vegetation, biological diversity, and land productivity at Cienega San Bernardino, an important wetland in southeastern Arizona and northern Sonora, Mexico. Rock detention and earthen berm structures were built on the Cienega San Bernardino over the course of four decades, beginning in 1984 and...

Wilson, Natalie R.; Norman, Laura
Wilson, Natalie R., and Laura M. Norman. 2018. “Analysis of Vegetation Recovery Surrounding a Restored Wetland Using the Normalized Difference Infrared Index (NDII) and Normalized Difference Vegetation Index (NDVI).” International Journal of Remote Sensing 39 (10): 3243–74. https://doi.org/10.1080/01431161.2018.1437297.

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Year Published: 2018

Removing rural roads from the National Land Cover Database to create improved urban maps for the United States, 1992-2011

Quantifying change in urban land provides important information to create empirical models examining the effects of human land use. Maps of developed land from the National Land Cover Database (NLCD) of the conterminous United States include rural roads in the developed land class and therefore overestimate the amount of urban land. To better map...

Soulard, Christopher E.; Acevedo, William; Stehman, Stephen V.
Soulard, Christopher E., Acevedo, William, Stehman, Stephen V., 2018, Removing non-urban roads from the National Land Cover Database to create improved urban maps for the United States, 1992-2011, Photogrammetric Engineering & Remote Sensing 84(2), 101-109, DOI: 10.14358/PERS.84.2.101.

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Year Published: 2018

Integrating continuous stocks and flows into state-and-transition simulation models of landscape change

State-and-transition simulation models (STSMs) provide a general framework for forecasting landscape dynamics, including projections of both vegetation and land-use/land-cover (LULC) change. The STSM method divides a landscape into spatially-referenced cells and then simulates the state of each cell forward in time, as a discrete-time stochastic...

Daniel, Colin J.; Sleeter, Benjamin M.; Frid, Leonardo; Fortin, Marie-Josée

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Year Published: 2018

Fog water collection effectiveness: Mesh intercomparisons

To explore fog water harvesting potential in California, we conducted long-term measurements involving three types of mesh using standard fog collectors (SFC). Volumetric fog water measurements from SFCs and wind data were collected and recorded in 15-minute intervals over three summertime fog seasons (2014–2016) at four California sites. SFCs...

Fernandez, Daniel; Torregrosa, Alicia; Weiss-Penzias, Peter; Zhang, Bong June; Sorensen, Deckard; Cohen, Robert; McKinley, Gareth; Kleingartner, Justin; Oliphant, Andrew; Bowman, Matthew
Fernandez, D. M., Torregrosa, A., Weiss-Penzias, P. S., Zhang, B. J., Sorensen, D., Cohen, R. E., McKinley, G., Kleingartner, J., Oliphant, A., and Bowman, M., (2017), Fog Water Collection Effectiveness: Mesh Intercomparisons, Aerosol and Air Quality Research, 17:1(40), DOI: 10.4209/aaqr.2017.01.0040​

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Year Published: 2017

Future scenarios of land change based on empirical data and demographic trends

Changes in land use and land cover (LULC) have important and fundamental interactions with the global climate system. Top-down global scale projections of land use change have been an important component of climate change research; however, their utility at local to regional scales is often limited. The goal of this study was to develop an...

Sleeter, Benjamin M.; Wilson, Tamara; Sharygin, Ethan; Sherba, Jason T.
Sleeter, B.M., Wilson, T.S., Sharygin, E., Sherba, J., 2017, Future scenarios of land change based on empirical data and demographic trends, Earth’s Future, DOI: 10.1002/2017EF000560. http://onlinelibrary.wiley.com/doi/10.1002/2017EF000560/full

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Year Published: 2017

Mediterranean California’s water use future under multiple scenarios of developed and agricultural land use change

With growing demand and highly variable inter-annual water supplies, California’s water use future is fraught with uncertainty. Climate change projections, anticipated population growth, and continued agricultural intensification, will likely stress existing water supplies in coming decades. Using a state-and-transition simulation modeling...

Wilson, Tamara; Sleeter, Benjamin M.; Cameron, D. Richard
Wilson TS, Sleeter BM, Cameron DR (2017) Mediterranean California’s water use future under multiple scenarios of developed and agricultural land use change. PLoS ONE12(10): e0187181. https://doi.org/10.1371/journal.pone.0187181

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Year Published: 2017

Remote sensing for wetland mapping and historical change detection at the Nisqually River Delta

Coastal wetlands are important ecosystems for carbon storage and coastal resilience to climate change and sea-level rise. As such, changes in wetland habitat types can also impact ecosystem functions. Our goal was to quantify historical vegetation change within the Nisqually River watershed relevant to carbon storage, wildlife habitat, and wetland...

Ballanti, Laurel; Byrd, Kristin B.; Woo, Isa; Ellings, Christopher
Ballanti, L.; Byrd, K.B.; Woo, I.; Ellings, C. Remote Sensing for Wetland Mapping and Historical Change Detection at the Nisqually River Delta. Sustainability 2017, 9, 1919.

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Year Published: 2017

HERA: A dynamic web application for visualizing community exposure to flood hazards based on storm and sea level rise scenarios

The Hazard Exposure Reporting and Analytics (HERA) dynamic web application was created to provide a platform that makes research on community exposure to coastal-flooding hazards influenced by sea level rise accessible to planners, decision makers, and the public in a manner that is both easy to use and easily accessible. HERA allows users to (a)...

Jones, Jeanne M.; Henry, Kevin; Wood, Nathan J.; Ng, Peter; Jamieson, Matthew
Jones,J.M., Henry, K., Wood, N., Ng, P., Jamieson, M., 2017. HERA: A dynamic web application for visualizing community exposure to flood hazards based on storm and sea level rise scenarios. Computers and Geosciences 109 (2017), 124-133.

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Year Published: 2017

Interannual variation in methane emissions from tropical wetlands triggered by repeated El Niño Southern Oscillation

Methane (CH4) emissions from tropical wetlands contribute 60%–80% of global natural wetland CH4 emissions. Decreased wetland CH4 emissions can act as a negative feedback mechanism for future climate warming and vice versa. The impact of the El Niño–Southern Oscillation (ENSO) on CH4 emissions from wetlands remains poorly quantified at both...

Zhu, Qiuan; Peng, Changhui; Ciais, Philippe; Jiang, Hong; Liu, Jinxun; Bousquet, Philippe; Li, Shiqin; Chang, Jie; Fang, Xiuqin; Zhou, Xiaolu; Chen, Huai; Liu, Shirong; Lin, Guanghui; Gong, Peng; Wang, Meng; Wang, Han; Xiang, Wenhua; Chen, Jing
Zhu Q, Peng C, Ciais P, et al., Interannual variation in methane emissions from tropical wetlands triggered by repeated El Niño Southern Oscillation. Glob Change Biol. 2017;23:4706–4716.https://doi.org/10.1111/gcb.13726