Lead exposure of red-shouldered hawks during the breeding season in the central Appalachians, USA
Todd E. Katzner
2019, Bulletin of Environmental Contamination and Toxicology (103) 783-788
Lead is toxic to humans and wildlife. Most studies of lead exposure of raptors focus on the winter, non-breeding season when they scavenge heavily. We evaluated blood lead concentrations (BLCs) of red-shouldered hawks (Buteo lineatus) during the non-scavenging season in the eastern United States. BLCs of 53 of 70 hawks...
Influence of multi-decadal land use, irrigation practices and climate on riparian corridors across the Upper Missouri River Headwaters Basin, Montana
Melanie K. Vanderhoof, J.R. Christensen, Laurie C. Alexander
2019, Hydrology and Earth System Sciences (23) 4269-4292
The Upper Missouri River Headwaters Basin (36,400 km2) depends on its river corridors to support irrigated agriculture and world-class trout fisheries. We evaluated trends (1984-2016) in riparian wetness, an indicator of riparian condition, in peak irrigation months (June, July, August) for 158 km2 of riparian area across the basin using...
Resolving a paradox—high mercury deposition, but low bioaccumulation in northeastern Puerto Rico
James B. Shanley, Mark C. Marvin-DiPasquale, Oksana P. Lane, Wayne J. Arendt, Steven J. Hall, William H. McDowell
2019, Ecotoxicology (29) 1207-1220
At a “clean air” trade winds site in northeastern Puerto Rico, we found an apparent paradox: atmospheric total mercury (THg) deposition was highest of any site in the USA Mercury Deposition Network, but assimilation into the local food web was quite low. Avian blood THg concentrations (n = 31, from eight species...
Solute transport and transformation in an intermittent, headwater mountain stream with diurnal discharge fluctuations
Adam S Ward, Marie J Kurz, Noah Schmadel, Julia LA Knapp, Phillip J Blaen, Ciaran Harman, Jennifer D. Drummond, David M Hannah, Stefan Krause, Angang Li, Eugenia Marti, Alexander Milner, Kerry Neil, Stephen Plont, Aaron I. Packman, Nathan I Wisnoski, Steven Wondzell, Jay P. Zarnetske
2019, Water (11)
Time-variable discharge is known to control both transport and transformation of solutes in the river corridor. Still, few studies consider the interactions of transport and transformation together. Here, we consider how diurnal discharge fluctuations in an intermittent, headwater stream control reach-scale solute transport and transformation as measured...
The Life of P: A biogeochemical and sociopolitical challenge in the Everglades
Victor H. Rivera-Monroy, Jessica Cattelino, Jeffrey R Wozniak, Katrina Schwartz, Gregory E. Noe, Edward Castaneda-Moya, Gregory R Koch
Joseph N Boyer, Stephen E Davis, editor(s)
2019, Book chapter, The coastal Everglades: The dynamics of social-ecological transformation in the south Florida landscape
• Phosphorus (P) is an essential element for all life forms, yet to understand its life cycle and impact we need to grasp not only the biogeochemical life of P, but also how P intersects with human activities and values. • Phosphorus is the limiting nutrient in the oligotrophic Everglades ecosystem. Thus, the...
Ground failure from the Anchorage, Alaska, earthquake of 30 November 2018
Randall W. Jibson, Alex R. Grant, Robert C. Witter, Kate E. Allstadt, Eric M. Thompson, Adrian Bender
2019, Seismological Research Letteres (91) 19-32
Investigation of ground failure triggered by the 2018 Mw">MwMw 7.1 Anchorage earthquake showed that landslides, liquefaction, and ground cracking all occurred and caused significant damage. Shallow rock falls and rock slides were the...
A ship's ballasting history as an indicator of foraminiferal invasion potential--An example from Prince William Sound, Alaska, USA
Mary McGann, Gregory M. Ruiz, Anson H. Hines, George D. Smith
2019, Journal of Foraminiferal Research (49) 434-455
We investigated the potential role of ballast sediment from coastal and transoceanic oil tankers arriving and de-ballasting in Port Valdez as a vector for the introduction of invasive benthic foraminifera in Prince William Sound, Alaska. Forty-one ballast sediment samples were obtained in 1998-1999 from 11 oil tankers that routinely discharged...
The use of stable isotope-based water age to evaluate a hydrodynamic model
Edward Gross, Stephen Andrews, Brian A. Bergamaschi, Bryan D. Downing, Rusty Holleman, Scott Burdick, John Durand
2019, Water (11)
Transport time scales are common metrics of the strength of transport processes. Water age is the time elapsed since water from a specific source has entered a study area. An observational method to estimate water age relies on the progressive concentration of the heavier isotopes of hydrogen...
The ‘Ike Wai Hawai‘i groundwater recharge tool
Jared H. McLean, Sean B. Cleaveland, Kolja Rotzoll, Scot K. Izuka, Jason Leigh, Gwen A. Jacobs, Ryan Theriot
2019, Conference Paper
This paper discusses the design and implementation of the ‘Ike Wai Hawai‘i Groundwater Recharge Tool, an application for providing data and analyses of the impacts of land-cover and climate modifications on groundwater-recharge rates for the island of O‘ahu. This application uses simulation data based on a set of 29 land-cover types and two rainfall scenarios to...
Measuring sustainability of seed-funded Earth science informatics projects
Leslie Hsu, Vivian B. Hutchison, Madison Langseth
2019, PLoS ONE (14)
Short term funding is a common funding model for informatics projects. Funders are interested in maximizing the sustainability and accessibility of the outputs, but there are no commonly accepted practices to do so in the Earth sciences informatics field. We constructed and applied a framework for sustainability drawing from other...
Groundwater and surface-water resources near Red Fleet Reservoir, Uintah County, Utah
Thomas M. Marston, John E. Solder, Katherine K. Jones
2019, Scientific Investigations Report 2019-5101
Red Fleet Reservoir in Uintah County, Utah, is an approximately 26,000 acre-foot (acre-ft) on-channel reservoir in the Big Brush Creek drainage on the south slopes of the Uinta Mountains. It is operated primarily for irrigation needs while providing a supplemental drinking-water supply to the Vernal, Utah area. Red Fleet Reservoir,...
Track tube construction and field protocol for small mammal surveys with emphasis on the endangered Pacific pocket mouse (Perognathus longimembris pacificus)
Cheryl S. Brehme, Tritia A. Matsuda, Devin T. Adsit-Morris, Denise R. Clark, Jeremy B. Sebes, Melanie Anne T. Burlaza, Robert N. Fisher
2019, Techniques and Methods 2A15
Track tubes are used to identify small animals by their tracks. Animals that are small enough to fit into the tubes walk over ink pads and onto cardstock paper to obtain bait within the tube, leaving their footprints. The tracking tubes described in this document are designed to be set...
Caryospora-like coccidia infecting green turtles (Chelonia mydas): An emerging disease with evidence of interoceanic dissemination
Brian A. Stacy, Phoebe A. Chapman, Heather Stockdale-Walden, Thierry M. Work, Julie Dagenais, Allen M. Foley, Morgan Wideroff, Wellehan, April L. Childress, Charles A. Manire, Mya Rodriguez, Trevor T. Zachariah, Lydia Staggs, Bette Zirkelbach, Nina Nahvi, Whitney Crowder, Shane M. Boylan, Shelly Marquardt, Craig Pelton, Terry M. Norton
2019, Frontiers in Veterinary Science (6) 1-12
Protozoa morphologically consistent with Caryospora sp. are one of the few pathogens associated with episodic mass mortality events involving free-ranging sea turtles. Parasitism of green turtles (Chelonia mydas) by these coccidia and associated mortality was first reported in maricultured turtles in the Caribbean during the 1970s. Years later, epizootics affecting...
Fire disturbance influences endangered Cape Sable Seaside Sparrow (Ammopiza maritima mirabilis) relative bird count
Allison Benscoter, James Beerens, Leonard G. Pearlstine, Stephanie Romanach
2019, Conservation Science and Practice (1)
Periodicity of fire disturbance is a known driver of ecosystem function and is reported as important in both promoting and maintaining viable breeding habitat for the endangered Cape Sable Seaside Sparrow (Ammospiza maritima mirabilis; CSSS). In south Florida, the CSSS serves as a fine-scale indicator of the marl and mixed-marl...
Groundwater availability in the Ozark Plateaus aquifer system
Brian R. Clark, Leslie L. Duncan, Katherine J. Knierim
2019, Professional Paper 1854
Executive SummaryThe study described in this report, initiated by the U.S. Geological Survey in 2014, was designed to evaluate fresh groundwater resources within the Ozark Plateaus, central United States, as an area within a broader national assessment of groundwater availability. The goals of the Ozark study were to evaluate historical...
Exit here: Strategies for dealing with aging dams and reservoirs
Henry H. Hansen, Emily Forzono, Alisha Grams, Lindsay Ohlman, Christine Ruskcamp, Mark A. Pegg, Kevin L. Pope
2019, Aquatic Sciences (82)
Aging infrastructure is prevalent throughout the world but water control management structures, specifically dams are of growing concern. Dams and their corresponding reservoirs have inherent, but separate, lifespans. The proportion of dams around the world that continue operation beyond their intended lifespans is growing at an alarming rate. Society will...
Applying the Watershed Approach to Urban Ecosystems in Baltimore
Peter Groffman, Laurence Band, Kenneth Belt, Neil Bettez, Aditi Bhaskar, Edward Doheny, Jonathan Duncan, Sujay Kaushal, Emma Rosi-Marshall, Claire Welty
2019, Book chapter, Science for the sustainable city : Empirical insights from the Baltimore School of Urban Ecology
No abstract available....
Co-located contemporaneous mapping of morphological, hydrological, chemical, and biological conditions in a 5th-order mountain stream network, Oregon, USA
Adam S Ward, Jay P. Zarnetske, Viktor Baranov, Phillip J Blaen, Nicolai Brekenfeld, Rosalie Chu, Romain Derelle, Jennifer D. Drummond, Jan Fleckenstein, Vanessa Garayburu-Caruso, Emily B. Graham, David Hannah, Ciaran Harman, Jase Hixson, Julia LA Knapp, Stefan Krause, Marie Kurz, Jorg Lewandowski, Angang Li, Eugènia Martí, Melinda Miller, Alexander Milner, Kerry Neil, Luisa Orsini, Aaron I. Packman, Stephen Plont, Lupita Renteria, Kevin Roche, Todd V Royer, Noah Schmadel, Catalina Segura, James Stegen, Jason Toyoda, Jacqueline Wells, Nathan Wisnoski, Steven Wondzell
2019, Earth System Science Data (11) 1567-1581
A comprehensive set of measurements and calculated metrics describing physical, chemical, and biological conditions in the river corridor is presented. These data were collected in a catchment-wide, synoptic campaign in the H. J. Andrews Experimental Forest (Cascade Mountains, Oregon, USA) in summer 2016 during low-discharge conditions....
User guide to the FireCLIME Vulnerability Assessment (VA) Tool: A rapid and flexible system for assessing ecosystem vulnerability to climate-fire interactions
Megan Friggens, Rachel A. Loehman, Andi Thode, William T. Flatley, Alexander Evans, Windy Bunn, Craig Wilcox, Stephanie Mueller, Larissa Yocum, Donald A. Falk
2019, Report
Decisionmakers need better methods for identifying critical ecosystem vulnerabilities to changing climate and fire regimes. Climate-wildfire-vegetation interactions are complex and hinder classification and projection necessary for development of management strategies. One such vulnerability assessment (VA) is FireCLIME VA, which allows users to compare management strategies under various climate scenarios and...
13C and 15N NMR identification of product compound classes from aqueous and solid phase photodegradation of 2,4,6-trinitrotoluene
Kevin A. Thorn
2019, PLoS ONE (14)
Abstract Photolysis is one of the main transformation pathways for 2,4,6-trinitrotoluene (TNT) released into the environment. Upon exposure to sunlight, TNT is known to undergo both oxidation and reduction reactions with release of nitrite, nitrate, and ammonium ions, followed by condensation reactions of the oxidation and reduction products. In this...
Optical properties of water for prediction of wastewater contamination in surface water
Steven Corsi, Sandra McLellan
2019, Report
No abstract available....
Improvements in seismic resolution and current limitations in the Global Seismographic Network
Adam T. Ringler, J. Steim, David C. Wilson, R. Widmer-Schnidrig, Robert E. Anthony
2019, Geophysical Journal International (220) 508-521
Station noise levels play a fundamental limitation in our ability to detect seismic signals. These noise levels are frequency-dependent and arise from a number of physically different drivers. At periods greater than 100 s, station noise levels are often limited by the self-noise of the instrument as well...
Challenges for monitoring the extent and land use/cover changes in monarch butterflies’ migratory habitat across the United States and Mexico
Rafael Moreno-Sanchez, James Raines, James E. Diffendorfer, Mark A. Drummond, Jessica Manko
2019, Land (10)
This paper presents a synopsis of the challenges and limitations presented by existing and emerging land use/ land cover (LULC) digital data sets when used to analyze the extent, habitat quality, and LULC changes of the monarch (Danaus plexippus) migratory habitat across the United States of America (US) and Mexico....
Assessing plant production responses to climate across water-limited regions using Google Earth Engine
Erin L. Bunting, Seth M. Munson, John B. Bradford
2019, Remote Sensing of Environment (233) 1-15
(Munson) Climate variability and change acting at broad scales can lead to divergent changes in plant production at local scales. Quantifying how production responds to variation in climate at local scales is essential to understand underlying ecological processes and inform land management decision-making, but has historically been limited in spatiotemporal...
Hysteretic response of solutes and turbidity at the event scale across forested tropical montane watersheds
Adam S. Wymore, Miguel C. Leon, James B. Shanley, William C. McDowell
2019, Frontiers in Earth Science (7)
Concentration-discharge relationships are a key tool for understanding the sourcing and transport of material from watersheds to fluvial networks. Storm events in particular provide insight into variability in the sources of solutes and sediment within watersheds, and the hydrologic pathways that connect hillslope to stream channel. Here we examine high-frequency...
