Hydrogeologic framework of the Virginia Eastern Shore
E. Randolph McFarland, Todd A. Beach
2019, Scientific Investigations Report 2019-5093
The Yorktown-Eastover aquifer system of the Virginia Eastern Shore consists of upper, middle, and lower confined aquifers overlain by correspondingly named confining units and underlain by the Saint Marys confining unit. Miocene- to Pliocene-age marine-shelf sediments observed in 205 boreholes include medium- to coarse-grained sand and shells that compose the...
Identifying and characterizing extrapolation in multivariate response data
Meridith L. Bartley, Ephraim M. Hanks, Erin M. Schliep, Patricia A. Soranno, Tyler Wagner
2019, PLoS ONE (14)
Faced with limitations in data availability, funding, and time constraints, ecologists are often tasked with making predictions beyond the range of their data. In ecological studies, it is not always obvious when and where extrapolation occurs because of the multivariate nature of the data. Previous work on identifying extrapolation has...
Evaluation of stormwater treatment vault with Coanda-effect screen for removal of solids and phosphorus in urban runoff
Nicolas Buer, William R. Selbig
2019, Journal of Sustainable Water in the Built Environment (6)
Catch basins commonly are used by cities as part of a stormwater management plan to remove sediment and associated contaminants from stormwater, keeping them in compliance with regulations. Recently, the city of Madison, Wisconsin modified traditional catch basins by incorporating a fine-mesh (1-mm) Coanda-effect screen into the design with the...
BbsAssistant: An R package for downloading and handling data and information from the North American Breeding Bird Survey
Jessica Leigh Burnett, Lyndsie S. Wszola, Gabriela Palomo-Munoz
2019, Journal of Open Source Software (4) 1768
This R package contains functions for downloading and munging data from the U.S. Geological Surveys North American Breeding Bird Survey (BBS) via file transfer protocol (FTP) (Pardieck, Ziolkowski Jr, Lutmerding, & Hudson, 2018; J. R. Sauer et al., 2017). This package was created to allow the user to bulk-download the BBS...
Improving predictions of fine particle immobilization in streams
Jennifer D. Drummond, Noah Schmadel, Christa Kelleher, Aaron I. Packman, Adam S Ward
2019, Geophysical Research Letters (46) 13,853-13,861
Fine particles are critical to stream ecosystem functioning, influencing in-stream processes from pathogen transmission to carbon cycling, all of which depend on particle immobilization. However, our ability to predict particle immobilization is limited by: (1) availability of combined solute and particle tracer data and (2) identifying parameters that appropriately...
Offset channels may not accurately record strike-slip fault displacement: Evidence from landscape evolution models
Nadine G. Reitman, Karl J. Mueller, Gregory E. Tucker, Ryan D. Gold, Richard W. Briggs, Katherine R. Barnhart
2019, Journal of Geophysical Research Solid Earth (124) 13427-13451
Slip distribution, slip rate, and slip per event for strike‐slip faults are commonly determined by correlating offset stream channels—under the assumption that they record seismic slip—but offset channels are formed by the interplay of tectonic and geomorphic processes. To constrain offset channel development under known tectonic and geomorphic conditions, we...
Measurement of cyanobacteria bloom magnitude using satellite remote sensing
Sachidananda Mishra, Richard P. Stumpf, Blake Schaeffer, P. Jeremy Werdell, Keith A. Loftin, Andrew Meredith
2019, Scientific Reports
Cyanobacterial harmful algal blooms (cyanoHABs) are a serious environmental, water quality and public health issue worldwide because of their ability to form dense biomass and produce toxins. Models and algorithms have been developed to detect and quantify cyanoHABs biomass using remotely sensed data but not for quantifying bloom magnitude, information...
Environmental and biological factors influence migratory Sea Lamprey catchability: Implications for tracking abundance in the Laurentian Great Lakes
Sean A. Lewandoski, Gale A Bravener, Peter J. Hrodey, Scott M. Miehls
2019, Journal of Fish and Wildlife Management (11) 68-79
Sea Lamprey Petromyzon marinus population trends in the Great Lakes are tracked by trapping migratory adults in tributaries and using mark and recapture techniques to estimate abundance. Understanding what environmental and biological factors influence Sea Lamprey capture in tributaries is crucial to developing efficient trapping methods and reliable abundance...
Assessment of continuous oil and gas resources in the Mississippian Delle Phosphatic Member of the Woodman Formation in the Eastern Great Basin Province of Nevada, Utah, and Idaho, 2019
Christopher J. Schenk, Tracey J. Mercier, Thomas M. Finn, Kristen R. Marra, Phuong A. Le, Michael E. Brownfield, Heidi M. Leathers-Miller
2019, Fact Sheet 2019-3062
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of 144 million barrels of shale oil and 559 billion cubic feet of shale gas in the Mississippian Delle Phosphatic Member of the Woodman Formation in the Eastern Great Basin Province of Nevada, Utah, and Idaho....
Assessment of the American woodcock singing-ground survey zone timing and coverage
J. D. Moore, Thomas R. Cooper, Rebecca D. Rau, David E. Andersen, J. P Duguay, C. Alan Stewart, David G. Krementz
2019, Conference Paper, Proceedings of the eleventh American woodcock symposium
The American woodcock (Scolopax minor; hereafter, woodcock) Singing-Ground Survey (SGS) was developed to inform management decisions by monitoring changes in the relative abundance of woodcock. The timing of the designated survey windows was designed to count resident woodcock while minimizing counting of migrating woodcock. Since the implementation of the SGS...
Estimating density and effective area surveyed for American woodcock
Stefanie M. Bergh, David E. Andersen
2019, Conference Paper, Proceedings of the eleventh American woodcock symposium
The American Woodcock (Scolopax minor; hereafter, woodcock) Singing-ground Survey (SGS) is conducted annually during the woodcock breeding season, and survey points along survey routes are set 0.4 mile (0.65 km) apart to avoid counting individual birds from >1 listening location. The effective area surveyed (EAS) at a listening point is...
Detection probability and occupancy of American woodcock during Singing-ground surveys
Stefanie M. Bergh, David E. Andersen
2019, Conference Paper, Proceedings of the eleventh American woodcock symposium
The Singing-ground Survey (SGS) was designed to exploit the conspicuous breeding-season display of male American woodcock (Scolopax minor; hereafter, woodcock) to monitor these otherwise inconspicuous birds. The SGS was standardized in 1968 and has since been conducted annually to derive an index of abundance and population trend. Counts of singing...
Comparing live-capture methods for nutria: single- versus multiple-capture cage traps
Trevor R. Sheffels, Jacoby Carter, Mark S. Sytsma, Jimmy D. Taylor
2019, Human-Wildlife Interactions (13) 394-399
Herbivory and burrowing by nutria (Myocastor coypus) cause substantial ecological and economic damage. Trapping is a common, effective practice for reducing nutria damage; however, trapping approaches must continually be adapted to keep pace with evolving animal welfare and ethical issues and to more effectively target pest species of interest. Our objective was to evaluate...
Observations of the spawning ecology of the imperiled Clear Lake Hitch Lavinia exilicauda chi
Frederick V. Feyrer
2019, California Fish and Game (105) 225-232
Migrations for the purposes of reproduction are widely documented across the animal kingdom and are particularly common in fishes and other aquatic organisms (Dingle 2014). One important migration strategy in fishes is potamodromy, which is the movement from one location to another entirely within freshwater (Morais and Daverat 2016)....
Reach-scale monitoring and modeling of rivers--Expanding hydraulic data collection beyond the cross section
Brandon T. Forbes, Claire E. Bunch, Geoffrey DeBenedetto, Corey J. Shaw, Bruce Gungle
2019, Fact Sheet 2019-3073
For over 125 years, the U.S. Geological Survey streamgage network has provided important hydrologic information about rivers and streams throughout the Nation. Traditional streamgage methods provide reliable stage and streamflow data but typically only monitor stage at a single location in a river and require frequent calibration streamflow measurements. Direct measurements are...
A leg-hold noose capture method for Brent Geese Branta bernicla at staging or wintering sites
Yusuke Sawa, Chieko Tamura, Toshio Ikeuchi, Kaoru Fujii, Aisa Ishioroshi, T. Shimada, David H. Ward
2019, Wildfowl (69) 230-241
Effective and efficient capture methods are needed for marking and monitoring individuals in studies of demography, migration and habitat use. We describe a novel use of leg-hold nooses aligned on lines and mats to capture non-breeding Brent Geese Branta bernicla in water at a staging and wintering site in Japan....
Preliminary status of Lake Ontario Alewife based on the 2019 spring trawl survey
Brian Weidel, Jeremy P. Holden, Michael J. Connerton
2019, Report
-The 2019 spring prey fish trawl survey was the most extensive fish survey ever conducted on Lake Ontario with 252 bottom trawls collecting 214,569 fish from 39 species, in main-lake and embayment habitats, at depths ranging from 5 to 225 meters (16.5 – 742.5 feet).-Alewife distribution was similar in U.S....
Correction to: Report of the IAU Working Group on cartographic coordinates and rotational elements: 2015
Brent A. Archinal, C. H. Acton, A. Conrad, T. Duxbury, D. Hestroffer, J. L. Hilton, L. Jorda, Randolph L. Kirk, S. A. Klioner, J-L. Margot, K. Meech, J. Oberst, F. Paganelli, J. Ping, P. K. Seidelmann, A. Stark, D. J. Tholen, Y. Wang, I. P. Williams
2019, Celestial Mechanics and Dynamical Astronomy (131)
We point out some errors in the most recent report from the International Astronomical Union (IAU) Working Group on Cartographic Coordinates and Rotational Elements (Archinal et al. 2018). We correct a sign error in Figs. 1 and 2. We also correct the equation for the prime meridian position (W) of...
Estimating the degree to which distance and temperature differences drive changes in fish community composition over time in the upper Mississippi River
James H. Larson, Jonathan M. Vallazza, Brent C. Knights
2019, PLoS ONE (14)
Similarity in community composition declines as distance between locations increases, a phenomenon that has been observed in a wide variety of freshwater, marine and terrestrial ecosystems. One driver of the distance-similarity relationship is the presence of environmental gradients that alter the suitability of sites for particular species. Although...
Asian swamp eels in North America linked to the live-food trade and prayer-release rituals
Leo Nico, Jay V. Kilian, Andrew J. Ropicki, Matthew Harper
2019, Aquatic Invasions (14) 775-814
We provide a history of swamp eel (family Synbranchidae) introductions around the globe and report the first confirmed nonindigenous records of Amphipnous cuchia in the wild. The species, native to Asia, is documented from five sites in the USA: the Passaic River, New Jersey (2007), Lake Needwood, Maryland (2014), a...
Survival rates and stopover persistence of American Woodcock using Cape May, New Jersey during fall migration
Daniel McAuley, Guthrie S. Zimmerman, B. L. Allen, C. Dwyer, T.R. Cooper
2019, Conference Paper, Proceedings of the eleventh American Woodcock symposium
Cape May, New Jersey is an important stopover area for American woodcock (Scolopax minor, hereafter woodcock) during fall migration along the Atlantic Coast of the United States. Previous research has indicated that many woodcock stop at Cape May prior to crossing Delaware Bay; however, little is known about survival of...
Nutrient scarcity as a selective pressure for mast seeding
M. Fernández-Martínez, Ian S. Pearse, Jordi Sardans, F. Sayol, W. D. Koenig, J. M. LaMontagne, M. Bogdziewicz, A. Collalti, Andrew Hacket-Pain, Giorgio Vacchiano, J. M. Espelta, J. Penuelas, I. A. Janssens
2019, Nature Plants (5) 1222-1228
Mast seeding is one of the most intriguing reproductive traits in nature. Despite its potential drawbacks in terms of fitness, the widespread existence of this phenomenon suggests that it should have evolutionary advantages under certain circumstances. Using a global dataset of seed production time series for 219 plant species from...
Unravelling the tectonics of Pearya Terrane, Nunavut: GEM-2 Western Arctic Project, report of activities 2018
Thomas Hadlari, Nicole M. Rayner, Thomas E. Moore
2019, Open File 8323
GSC scientists were part of an international team of researchers who visited bedrock outcrops on northernmost Ellesmere Island in the summer of 2017. The purpose of the expedition was to document and sample the rocks of Pearya terrane and study the tectonic history of the terrane in order to better...
Using pointing dogs and hierarchical models to evaluate American woodcock winter occupancy and densities
Daniel S. Sullins, Warren C. Conway, David A. Haukos, Christopher E. Comer
2019, Conference Paper, Proceedings of the eleventh American Woodcock Symposium
Use of dogs has increased for multiple wildlife research purposes ranging from carnivore scat detection to estimation of reptile abundance. Use of dogs is not particularly novel for upland gamebird biologists, and pointing dogs have been long considered an important research tool. However, recent advances in Global Positioning System (GPS)...
Seasonal use of a nonnatal marine basin by juvenile hatchery chinook salmon
Michael C. Hayes, Sayre Hodgson, Christopher S. Ellings, Walker D Duval, Steve Rubin
2019, Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science (11) 437-453
Information on the movement patterns of fishes is essential for managers that are making critical resource decisions. We examined the frequency of a keystone species, Chinook Salmon Oncorhynchus tshawytscha that migrated from different marine basins to the Nisqually River estuary, which lies within the southernmost marine basin (hereafter, “South basin”)...
