Simulating land cover change impacts on groundwater recharge under selected climate projections, Maui, Hawaiʻi
Laura Brewington, Victoria Keener, Alan Mair
2019, Remote Sensing (11)
This project developed an integrated land cover/hydrological modeling framework using remote sensing and geographic information systems (GIS) data, stakeholder input, climate information and projections, and empirical data to estimate future groundwater recharge on the Island of Maui, Hawaiʻi, USA. End-of-century mean annual groundwater recharge was estimated under...
Ecological effects of establishing a 40-year oasis protection system in a Northwestern China Desert
Guohua Wang, Seth M. Munson, Kailiang Yu, Ning Chen, Qianqian Gou
2019, Catena (187)
Aims: Desertification around oasis areas is a serious problem in semi-arid and arid regions, which is expected to continue into the future due to a rapidly increasing human population. Oasis protection systems are created to reverse desertification by recovering degraded soil and vegetation properties and improving ecosystem services. Most research...
Deglacial water-table decline in Southern California recorded by noble gas isotopes
Alan M. Seltzer, Jessica Ng, Wesley R. Danskin, Justin T. Kulongoski, Riley Gannon, Martin Stute, Jeffery P. Severinghaus
2019, Nature Communications (10)
Constraining the magnitude of past hydrological change may improve understanding and predictions of future shifts in water availability. Here we demonstrate that water-table depth, a sensitive indicator of hydroclimate, can be quantitatively reconstructed using Kr and Xe isotopes in groundwater. We present the first-ever measurements of these dissolved noble gas...
Evaluation of Potential Translocation Sites for an Imperiled Cyprinid, theHornyhead Chub
Brian T. Hickerson, Annika W. Walters
2019, Transactions of the American Fisheries Society (39) 205-218
Translocation of isolated species into suitable habitats may help secure vulnerable, geographically limited species. Due to the decline of Wyoming Hornyhead Chub Nocomis biguttatus, conservation actions such as translocation of populations within the plausible historical range are being considered to improve population redundancy and resiliency to disturbance events. Translocation of...
Direct measurements of copper speciation in basaltic glasses: Understanding the relative roles of sulfur and oxygen in copper complexation in melts
Antonio Lanzirotti, R. Lopaka Lee, Elisabet Head, Stephen R Sutton, Matthew Newville, Molly McCanta, Allan Lerner, Paul J. Wallace
2019, Geochimica et Cosmochimica Acta (267) 164-178
Micro-analytical determination of copper (Cu) speciation in natural magmatic glasses, equilibrated below the nickel – nickel oxide (NNO) buffer, reveals that two copper species are commonly stabilized in such basaltic melts. X-ray absorption fine structure (XAFS) spectroscopic analysis of basaltic matrix glasses and melt inclusions (MI) from samples of mid-ocean...
Time to branch out? Application of hierarchical survival models in plant phenology
Sarah Elmendorf, Theresa Crimmins, Katharine L. Gerst, Jake Weltzin
2019, Agricultural and Forest Meteorology (279)
The sensitivity of phenology to environmental drivers can vary across geography and species. As such, models developed to predict phenology are typically site- or taxon-specific. Generation of site- and taxon-specific models is limited by the intensive in-situ phenological monitoring effort required to generate sufficient data to parameterize each model. Where...
Rare earth element deposits in China: A review and new understandings
Yuling Xie, Philip Verplanck, Zengqian Hou, Richen Zhong
2019, Book chapter, Mineral deposits of China
No abstract available....
High rates of inflation during a noneruptive episode of seismic unrest at Semisopochnoi Volcano, Alaska in 2014–2015
Kimberly Degrandpre, Jeremy D. Pesicek, Zhong Lu, Heather R. DeShon, Diana Roman
2019, Journal of Geophysical Research (20) 6163-6186
Magma intrusion rate is a key parameter in eruption triggering but is poorly quantified in existing geodetic studies. Here we examine two episodes of rapid inflation in this context. Two noneruptive microseismic swarms were recorded at Semisopochnoi Volcano, Alaska in 2014–2015. We use differential SAR techniques and TerraSAR‐X images to...
Geometric targets for UAS Lidar
B. Wilkinson, H.A. Lassiter, A. Abd-Elrahman, Raymond Carthy, P. Ifju, E. Broadbent, N. Grimes
2019, Remote Sensing (11)
Lidar from small unoccupied aerial systems (UAS) is a viable method for collecting geospatial data associated with a wide variety of applications. Point clouds from UAS lidar require a means for accuracy assessment, calibration, and adjustment. In order to carry out these procedures, specific locations within the point cloud must...
Characterization of immunoglobulin light chain utilization and variable family diversity in rainbow trout
Katherine Rego, Eva Bengten, Melanie Wilson, John D. Hansen, Erin S Bromage
2019, Developmental and Comparative Immunology (104)
This study characterizes immunoglobulin light chain (IgL) expression and variable family usage in rainbow trout. IgL transcripts were generated by 5’ RACE from both immune and TNP-KLH immunized fish. Phylogenetic analysis revealed that the IgL variable regions clustered into seven different families: three kappa families (two newly described in this...
Validating a landsat time-series of fractional component cover across western U.S. Rangelands
Matthew B. Rigge, Collin G. Homer, Hua Shi, Debra K. Meyer
2019, Remote Sensing (11)
Western U.S. rangelands have been quantified as six fractional cover (0%–100%) components over the Landsat archive (1985–2018) at a 30 m resolution, termed the “Back-in-Time” (BIT) dataset. Robust validation through space and time is needed to quantify product accuracy. Here, we used field data collected concurrently with high-resolution satellite (HRS) images...
Isolation of methylmercury using distillation and anion-exchange chromatography for isotopic analyses in natural matrices
Tylor Rosera, Sarah E. Janssen, Michael T. Tate, Ryan F. Lepak, Jacob M. Ogorek, John F. DeWild, Christopher L. Babiarz, David P. Krabbenhoft, James P. Hurley
2019, Analytical and Bioanalytical Chemistry (412) 681-690
The development of mercury (Hg) stable isotope measurements has enhanced the study of Hg sources and transformations in the environment. As a result of the mixing of inorganic Hg (iHg) and methylmercury (MeHg) species within organisms of the aquatic food web, understanding species-specific Hg stable isotopic compositions is of significant...
Exposure and potential effects of pesticides and pharmaceuticals in protected streams of the US National Park Service southeast Region
Paul M. Bradley, Kristin M. Romanok, Jeffrey R. Duncan, William Battaglin, Jimmy Clark, Michelle Hladik, Bradley Huffman, Luke Iwanowicz, Celeste A. Journey, Kelly Smalling
2019, Science of the Total Environment (704)
Globally protected areas offer refugia for a broad range of taxa including threatened and endangered species. The United States National Park Service (NPS) manages public lands to preserve biodiversity, but increasing park visitation and development of surrounding landscapes increase exposure to and effects from bioactive contaminants. The risk (exposure and...
Depth to bedrock based on modeling of gravity data of the eastern part of Edwards Air Force Base, California
Victoria Langenheim, Andrew Morita, Allen H. Christensen, Geoffrey Cromwell, Christopher P. Ely
2019, Open-File Report 2019-1128
We describe a gravity survey acquired to determine the thickness of basin-fill deposits (depth to bedrock) and to delineate geologic structures that might influence groundwater flow beneath the eastern part of Edwards Air Force Base, California. Inversion of these gravity data combined with geologic map and well information provides an...
Response of tidal marsh vegetation to pulsed increases in flooding and nitrogen
Meagan M McCoy, Taylor M Sloey, Rebecca J. Howard, Mark W. Hester
2019, Wetlands Ecology and Management (28) 119-135
Worldwide, human activities have modified hydrology and nutrient loading regimes in coastal wetlands. Understanding the interplay between these drivers and subsequent response of wetland plant communities is essential to informing wetland management and restoration efforts. Recent restoration strategies in Louisiana proposes to use sediment diversions from the Mississippi River to...
Yukon-Kuskokwim Delta Berry Outlook: Final Report
Nicole M. Herman-Mercer, Rachel A. Loehman
2019, Report
No abstract available. ...
Developing and optimizing shrub parameters representing sagebrush (Artemisia spp.) ecosystems in the Northern Great Basin using the Ecosystem Demography (EDv2.2) model
Karun Pandit, Hamid Dasthi, Nancy Glenn, Alejandro Flores, Kaitlin C. Maguire, Douglas J. Shinneman, Gerald Flerchinger, Aaron Fellow
2019, Geoscientific Model Development (12) 4585-4601
Ecosystem dynamic models are useful for understanding ecosystem characteristics over time and space because of their efficiency over direct field measurements and applicability to broad spatial extents. Their application, however, is challenging due to internal model uncertainties and complexities arising from distinct qualities of the ecosystems being analyzed. The sagebrush-steppe...
Generation of lamprey monoclonal antibodies (Lampribodies) using the phage display system
Khan M A Hassan, John Hansen, Brantley R Herrin, Chris T Amemiya
2019, Biomolecules (9)
The variable lymphocyte receptors (VLRs) consist of leucine rich repeats (LRRs) and comprise the humoral antibodies produced by lampreys and hagfishes. The diversity of the molecules is generated by stepwise genomic rearrangements of LRR cassettes dispersed throughout the VLRB locus. Previously, target-specific monovalent VLRB antibodies were isolated from sea lamprey...
Improved genetic identification of acipenseriform embryos with application to the endangered pallid sturgeon Scaphirhynchus albus
Tom Kashiwagi, Aaron J. Delonay, Patrick Braaten, Kimberly Chojnacki, Rachel M. Gocker, Edward J. Heist
2019, Journal of Fish Biology (96) 486-495
We produced pallid sturgeon Scaphirhynchus albus embryos at five pre‐hatch developmental stages and isolated and quantified genomic DNA from four of the stages using four commercial DNA isolation kits. Genomic DNA prepared using the kit that produced the largest yields and concentrations were used for microsatellite DNA analyses of 10–20...
High-resolution and accurate topography reconstruction of Mount Etna from Pleiades satellite data
Monica Palaseanu-Lovejoy, Marina Bisson, Claudia Spinetti, Maria Fabrizia Buongiorno, Oleg Alexandrov, Thomas Cecere
2019, Remote Sensing (11)
The areas characterized by dynamic and rapid morphological changes need accurate topography information with frequent updates, especially if these are populated and involve infrastructures. This is particularly true in active volcanic areas such as Mount (Mt.) Etna, located in the northeastern portion of Sicily, Italy. The Mt. Etna volcano is...
Earthquakes, ShakeMap
David J. Wald, Charles Worden, Eric M. Thompson, Mike Hearne
2019, Book chapter, Encyclopedia of Solid Earth Geophysics
ShakeMap® is an open-source software program employed to automatically produce a suite of maps and products that portray the geographical extent and severity of potentially damaging shaking following an earthquake. ShakeMap’s primary purpose is to provide post-earthquake situational awareness for emergency management and response as well...
A pragmatic approach for comparing species distribution models to increasing confidence in managing piping plover habitat
Brooke Maslo, Sara Zeigler, Evan Drake, Todd Pover, Nathaniel G. Plant
2019, Conservation Science and Practice (2)
Conservation management often requires decision-making without perfect knowledge of the at-risk species or ecosystem. Species distribution models (SDMs) are useful but largely under-utilized due to model uncertainty. We provide a case study that utilizes an ensemble modeling approach of two independently derived SDMs to explicitly address common modeling impediments and...
Recent sandy deposits at five northern California coastal wetlands — Stratigraphy, diatoms, and implications for storm and tsunami hazards
Eileen Hemphill-Haley, Harvey M. Kelsey, Nicholas Graehl, Michael Casso, Dylan Caldwell, Casey Loofbourrow, Michelle Robinson, Jessica Vermeer, Edward Southwick
2019, Scientific Investigations Report 2018-5111
A recent geological record of inundation by tsunamis or storm surges is evidenced by deposits found within the first few meters of the modern surface at five wetlands on the northern California coast. The study sites include three locations in the Crescent City area (Marhoffer Creek marsh, Elk Creek wetland,...
Evaluating legacy effects of hyperabundant white-tailed deer (Odocoileus virginianus) in forested stands of Harriman and Bear Mountain State Parks, New York
Chellby R. Kilheffer, H. Brian Underwood, Donald J. Leopold, Rachel Guerrieri
2019, Open-File Report 2019-1116
Executive SummaryWhite-tailed deer (Odocoileus virginianus) are among the most impactful herbivores in the eastern United States. Legacy forest effects, those accrued from intense herbivory over time, manifest as low seedling regeneration, high cover of plant species that are infrequently browsed by deer, presence or expansion of nonnative or invasive plant...
Multiorder hydrologic position in the conterminous United States: A set of metrics in support of groundwater mapping at regional and national scales
Kenneth Belitz, Richard B. Moore, Terri Arnold, Jennifer B. Sharpe, J. Jeffrey Starn
2019, Water Resources Research (55) 11188-11207
The location of a point on the landscape within a stream network (hydrologic position) can be an important predictive measure in hydrology. Hydrologic position is defined here by two metrics: lateral position and distance from stream to divide, both measured horizontally. Lateral position (dimensionless) is the relative...
