Western Geographic Science Center

Publications

Filter Total Items: 401
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Year Published: 2021

Ecosystem carbon balance in the Hawaiian Islands under different scenarios of future climate and land use change

The State of Hawai'i passed legislation to be carbon neutral by 2045, a goal that will partly depend on carbon sequestration by terrestrial ecosystems. However, there is considerable uncertainty surrounding the future direction and magnitude of the land carbon sink in the Hawaiian Islands. We used the Land Use and Carbon Scenario Simulator (LUCAS...

Selmants, Paul; Sleeter, Benjamin M.; Liu, Jinxun; Wilson, Tamara; Trauernicht, Clay ; Frazier, Abby G. ; Asner, Gregory P.

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Year Published: 2021

A simplified method for rapid estimation of emergency water supply needs after earthquakes

Researchers are investigating the problem of estimating households with potable water service outages soon after an earthquake. Most of these modeling approaches are computationally intensive, have large proprietary data collection requirements or lack precision, making them unfeasible for rapid assessment, prioritization, and allocation of...

Toland, Joseph Charles; Wein, Anne

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Year Published: 2021

Evaluation of SWIR crop residue bands for the Landsat Next mission

This research reports the findings of a Landsat Next expert review panel that evaluated the use of narrow shortwave infrared (SWIR) reflectance bands to measure ligno-cellulose absorption features centered near 2100 and 2300 nm, with the objective of measuring and mapping non-photosynthetic vegetation (NPV), crop residue cover, and the adoption of...

Hively, W. Dean; Lamb, Brian T.; Daughtry, Craig S.T.; Serbin, Guy; Dennison, Phillip; Kokaly, Raymond; Wu, Zhuoting; Masek, Jeffrey G.

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Year Published: 2021

BERM: A Belowground Ecosystem Resiliency Model for estimating Spartina alterniflora belowground biomass

SummarySpatiotemporal patterns of Spartina alterniflora belowground biomass (BGB) are important for evaluating salt marsh resiliency. To solve this, we created the BERM (Belowground Ecosystem Resiliency Model), which estimates monthly BGB (30-m spatial resolution) from freely available data such as Landsat-8 and Daymet climate summaries....

O'Connell, Jessica L.; Mishra, Deepak; Alber, Merryl; Byrd, Kristin B.

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Year Published: 2021

Trait-based filtering mediates the effects of realistic biodiversity losses on ecosystem functioning

Biodiversity losses are a major driver of global changes in ecosystem functioning. While most studies of the relationship between biodiversity and ecosystem functioning have examined randomized species losses, trait-based filtering associated with species-specific vulnerability to drivers of diversity loss can strongly influence how ecosystem...

Wolf, Amelia A.; Funk, Jennifer L; Selmants, Paul; Morozumi, Connor N; Hernandez, Daniel L.; Pasari, Jae R; Zavaleta, Erika S

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Year Published: 2021

Hyperspectral narrowband data propel gigantic leap in the earth remote sensing

Hyperspectral narrowbands (HNBs) capture data as nearly continuous “spectral signatures” rather than a “few spectral data points” along the electromagnetic spectrum as with multispectral broadbands (MBBs). Almost all of satellite remote sensing of the Earth in the twentieth century was conducted using MBB data from sensors such as the Landsat-...

Thenkabail, Prasad; Aneece, Itiya; Teluguntla, Pardhasaradhi; Oliphant, Adam

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Year Published: 2021

A new remote sensing-based Carbon Sequestration Potential Index (CSPI): A tool to support land carbon management

Integrating remote sensing into assessments of carbon stocks and fluxes has advanced our understanding of how global change affects landscapes and our capacity to support decision making about forest management. However, there remains a lack of detailed and actionable analyses conducted across widely ranging environmental conditions that are...

Pascual, Adrian; Giardina, Christian P.; Selmants, Paul; Laramee, Leah J; Asner, Gregory P.

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Year Published: 2021

Coral reef resilience differs among islands within the Gulf of Mannar, southeast India, following successive coral bleaching events

We used a 12-yr data set of benthic cover (2005–2017), spanning two bleaching events, to assess changes in benthic cover and coral community composition along 21 islands within Gulf of Mannar (GoM), southeast India. Overall, between 2005 and 2017 reefs had a simultaneous decrease in relative coral cover (avg. =  − 36%) and increase in algal cover...

Raj, K Diraviya; Aeby, Greta S.; Mathews, G.M.; Williams, Gareth J; Caldwell, Jamie M.; Laju, R L; Bharath, M Selva; Kumar, P Dinesh; Arasamuthu, A; Asir, N Gladwin Gnana; Wedding, Lisa M.; Daview, Andrew; Moritsch, Monica Mei Jeen; Edward, J K Patterson

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Year Published: 2021

Expansion of intertidal mussel beds following disease-driven reduction of a keystone predator

Disease shapes community composition by removing species with strong interactions. To test whether the absence of keystone predation due to disease produced changes to the species composition of rocky intertidal communities, we leverage a natural experiment involving mass mortality of the keystone predator Pisaster ochraceus from Sea Star Wasting...

Moritsch, Monica Mei Jeen

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Year Published: 2021

Editorial: Combining the science and practice of restoration ecology-Case studies of a grassroots binational restoration collaborative in the Madrean Archipelago Ecoregion (2014- 2019)

The Sky Island Restoration Collaborative (SIRC) is a growing partnership between government agencies, nonprofit organizations, and private landowners in southeast Arizona, the United States, and northern Sonora, Mexico. Starting in 2014 as an experiment to cultivate restoration efforts by connecting people across vocations and nations, SIRC has...

Norman, Laura M.; Pulliam, H. Ronald; Girard, Michele; Buckley, Steven M.; Misztal, Louise W.; Seibert, David; Campbell, Carianne; Callegary, James B.; Tosline, Deborah J.; Wilson, Natalie R.; Hodges, David; Conn, Jeff; Austin-Clark, A. Valer

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Year Published: 2021

Remote sensing analysis to quantify change in woodland canopy cover on the San Carlos Apache Reservation, Arizona (1935 vs. 2017)

Since the late 1800s, pinyon–juniper woodland across the western U.S. has increased in density and areal extent and encroached into former grassland areas. The San Carlos Apache Tribe wants to gain qualitative and quantitative information on the historical conditions of their tribal woodlands to use as a baseline for restoration efforts. At the...

Middleton, Barry R.; Norman, Laura M.

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Year Published: 2021

Editorial: Science and applications of coastal remote sensing

No abstract available.

Turpie, Kevin R.; Ackleson, Steven G.; Byrd, Kristin B.; Moisan, Tiffany K.