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...
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...
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...
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...
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...
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...
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)...
Aquatic cycling of mercury
William H. Orem, David P. Krabbenhoft, Brett Poulin, George A Aiken
2019, Book chapter, Mercury and the Everglades. A synthesis and model for complex ecosystem restoration
This chapter examines crucial processes in the aquatic cycling of mercury (Hg) that may lead to microbial production of neurotoxic and bioaccumulative methylmercury (MeHg), and highlights environmental conditions in the Everglades that make it ideal for MeHg production and bioaccumulation. The role of complexation of Hg2+ in surface water, especially by...
Geochemistry and geophysics of iron oxide-apatite deposits and associated waste piles with implications for potential rare earth element resources from ore and historic mine waste in the eastern Adirondack Highlands, New York, USA
Ryan D. Taylor, Anjana K. Shah, Gregory J. Walsh, Cliff D. Taylor
2019, Economic Geology (114) 1569-1598
The iron oxide-apatite (IOA) deposits of the eastern Adirondack Highlands, New York, are historical high-grade magnetite mines that contain variable concentrations of rare earth element (REE)-bearing apatite crystals. The majority of the deposits are hosted within sodically altered Lyon Mountain granite gneiss, although some deposits occur within paragneiss,...
Sulfur contamination in the Everglades, a major control on mercury methylation
William H. Orem, David P. Krabbenhoft, Brett Poulin, George Aiken
2019, Book chapter, Mercury and the Everglades. A Synthesis and Model for Complex Ecosystem Restoration
In this chapter sulfur contamination of the Everglades and its role as a major control on methylmercury (MeHg) production is examined. Sulfate concentrations over large portions of the Everglades (60% of the ecosystem) are elevated or greatly elevated compared to background conditions of <1 mg/L. Land and water management...
Impacts of the 2015 eruption of Calbuco volcano on Chilean infrastructure, utilities, agriculture, and health
J. Hayes, N. I. Deligne, L Bertin, Rodrigo Calderon, J. Wardman, T. J. Wilson, G. Leonard, Stewart. C., Kristi L. Wallace, P. Baxter
2019, GNS Science Report 2019/04
This report presents data and summarises the findings of a reconnaissance trip investigating the impacts of the April 2015 eruption of Calbuco volcano, Chile, undertaken in November-December 2016. This study is mostly focused on the Los Lagos region, focusing on impacts occurring within ~30 km of the volcano, which includes...
Predicting paleoclimate from compositional data using multivariate Gaussian process inverse prediction
John R. Tipton, Mevin Hooten, Connor Nolan, Robert K. Booth, Jason McLachlan
2019, Annals of Applied Statistics (13) 2363-2388
Multivariate compositional count data arise in many applications including ecology, microbiology, genetics and paleoclimate. A frequent question in the analysis of multivariate compositional count data is what underlying values of a covariate(s) give rise to the observed composition. Learning the relationship between covariates and the compositional count allows for inverse...
Population characteristics and the potential suppression of common carp in Lake Spokane, Washington
Stacey Feeken, Zachary B. Klein, Michael C. Quist, Ned Horner
2019, Journal of Fish and Wildlife Management (10) 362-374
Common Carp Cyprinus carpio is a nonnative species that often has deleterious effects on aquatic systems. As such, there is interest in suppressing nonnative Common Carp populations in areas where humans have introduced them. The objectives of this study were to 1) provide insight on efficient techniques...
Managing effects of drought in Hawai’i and U.S.-affiliated Pacific Islands
Abby G. Frazier, Jonathan Deenik, Neal Fujii, Greg Funderburk, Thomas Giambelluca, Christian Giardina, David A. Helweg, Victoria Keener, Donald Mair, John Marra, Sierra McDaniel, Lenore Ohye, Delwyn S. Oki, Elliott Parsons, Ayron Strauch, Clay Trauernicht
2019, General Technical Report WO-98-5
How is drought expressed in Hawai‘i & USAPI? Drought is a significant climate feature in Hawai‘i and the U.S.-Affiliated Pacific Islands (USAPI), at times causing severe impacts across multiple sectors. Below average precipitation anomalies are often accompanied by higher than average temperatures and reduced cloud cover. The resulting higher insolation...
A shallow rift basin segmented in space and time: The southern San Luis Basin, Rio Grande rift, northern New Mexico, U.S.A.
Benjamin J. Drenth, V. J. Grauch, Kenzie J. Turner, Brian D. Rodriguez, Ren A. Thompson, Paul W. Bauer
2019, Rocky Mountain Geology (54) 97-131
Interpretation of gravity, magnetotelluric, and aeromagnetic data in conjunction with geologic constraints reveals details of basin geometry, thickness, and spatiotemporal evolution of the southern San Luis Basin, one of the major basins of the northern Rio Grande rift. Spatial variations of low-density basin-fill thickness are estimated primarily using a 3D...
Frequent use of upland habitats by the endangered Hawaiian stilt (Himantopus mexicanus knudseni)
Martha Kawasaki, Patrick J. Hart, Eben H. Paxton
2019, Waterbirds (42) 431-438
The Hawaiian Stilt, or Ae’o (Himantopus mexicanus knudseni), is an endangered waterbird endemic to the Hawaiian Islands. Loss of suitable wetland habitats due to anthropogenic development is a leading cause for decline, as well as the introduction of non-native predators and invasive wetland plants. This study fitted four Hawaiian...
Assessing North American multimodel ensemble (NMME) seasonal forecast skill to assist in the early warning of hydrometeorological extremes over East Africa
Shraddhanand Shukla, Jason B. Roberts, Hoell. Andrew, Chris Funk, Franklin R. Robertson, Benjamin Kirtmann
2019, Climate Dynamics (15) 7411-7427
The skill of North American multimodel ensemble (NMME) seasonal forecasts in East Africa (EA), which encompasses one of the most food and water insecure areas of the world, is evaluated using deterministic, categorical, and probabilistic evaluation methods. The skill is estimated for all three primary growing seasons: March–May...
Public access for pheasant hunters: Understanding an emerging need
L.S. Wszola, A.L. Madsen, E.F. Stuber, Christopher J. Chizinski, J.J. Lusk, J.S. Taylor, Kevin L. Pope, Joseph J. Fontaine
2019, Journal of Wildlife Management (84) 45-55
Ring-necked pheasant (Phasianus colchicus; i.e., pheasant) hunting participation is declining across North America, reflecting a larger downward trend in American hunting participation and threatening benefits to grassland conservation and rural economies. To stabilize and expand the pheasant hunting population, we must first identify factors that influence pheasant hunter participation. We...
Wave-current interaction between Hurricane Matthew wave fields and the Gulf Stream
Christie Hegermiller, John C. Warner, Maitane Olabarrieta, Christopher R. Sherwood
2019, Journal of Physical Oceanography (49) 2883-2900
Hurricanes interact with the Gulf Stream in the South Atlantic Bight (SAB) through a wide variety of processes, which are crucial to understand for prediction of open-ocean and coastal hazards during storms. However, it remains unclear how waves are modified by large-scale ocean currents under storm conditions, when waves are...
Separating sea and slow slip signals on the seafloor
Joan S. Gomberg, Susan Hautala, Paul Johnson, Steve Chiswell
2019, Journal of Geophysical Research- Solid Earth (124) 13486-13503
Seafloor pressure measurements hold promise for estimating vertical displacements from transient slow slip events on submarine faults. We assess the accuracy of pressure offset estimates that evolve over days to weeks and the confidence with which they may be attributed to tectonic deformation or to the ocean...
The 2018 update of the US National Seismic Hazard Model: Overview of model and implications
Mark D. Petersen, Allison Shumway, Peter M. Powers, Charles Mueller, Morgan P. Moschetti, Arthur D. Frankel, Sanaz Rezaeian, Daniel E. McNamara, Nico Luco, Oliver S. Boyd, Kenneth S. Rukstales, Kishor S. Jaiswal, Eric M. Thompson, Susan M. Hoover, Brandon Clayton, Edward H. Field, Yuehua Zeng
2019, Earthquake Spectra (36) 5-41
During 2017–2018, the National Seismic Hazard Model for the conterminous United States was updated as follows: (1) an updated seismicity catalog was incorporated, which includes new earthquakes that occurred from 2013 to 2017; (2) in the central and eastern United States (CEUS), new ground motion models were updated that incorporate...
