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Streambank and floodplain geomorphic change and contribution to watershed material budgets
Stream geomorphic change is highly spatially variable but critical to landform evolution, human infrastructure, habitat, and watershed pollutant transport. However, measurements and process models of streambank erosion and floodplain deposition and resulting sediment fluxes are currently insufficient to predict these rates in all perennial streams over large regions. Here we measured long-term lat
Authors
Gregory Noe, Kristina G. Hopkins, Peter Claggett, Edward R. Schenk, Marina Metes, Labeeb Ahmed, Thomas Rossiter Doody, Cliff R. Hupp
Ecological divergence of wild birds drives avian influenza spillover and global spread
The diversity of influenza A viruses (IAV) is primarily hosted by two highly divergent avian orders: Anseriformes (ducks, swans and geese) and Charadriiformes (gulls, terns and shorebirds). Studies of IAV have historically focused on Anseriformes, specifically dabbling ducks, overlooking the diversity of hosts in nature, including gull and goose species that have successfully adapted to human habi
Authors
Nichola J. Hill, Mary Anne Bishop, Nidia S. Trovao, Katherine Ineson, Anne Schaefer, Wendy B. Puryear, Katherine Zhou, Alexa Foss, Dan Clark, Ken McKenzie, Jonathan D. Jr. Gass, Laura Borkenhagen, Jeffrey S. Hall, Jonathan A. Runstadler
Integrating data types to estimate spatial patterns of avian migration across the Western Hemisphere
For many avian species, spatial migration patterns remain largely undescribed, especially across hemispheric extents. Recent advancements in tracking technologies and high-resolution species distribution models (i.e., eBird Status and Trends products) provide new insights into migratory bird movements and offer a promising opportunity for integrating independent data sources to describe avian migr
Authors
Timothy Meehan, Sarah P. Saunders, William DeLuca, Nicole L Michel, Joanna Grand, JIll Deppe, MIguel JImenez, Erika Knight, Nathaniel E. Seavy, Melanie A. Smith, Lotem Taylor, Chad Witko, Michael Akresh, David S. Barber, David Bayne, James Beasley, Jerrold L. Belant, Richard O Bierregaard Jr., Keith L. Bildstein, Than J. Boves, John N. Brzorad, Steven B. Campbell, Antonio Celis-Murillo, Hillary Cooke, Robert Domenech, Laurie J. Goodrich, Elizabeth A. Gow, Aaron Haines, Michael T. Hallworth, Jason M. Hill, Amanda E. Holland, Scott Jennings, Roland Kays, Tommy King, Kent MacFarland, Stewart Mckenzie, Peter P. Marra, Rebbeca McCabe, Kent P. McFarland, Michael J. McGrady, John Melcer Jr., Ryan Norris, Russell Norvell, Olin Rhodes Jr., Christopher C. Rimmer, Amy L. Scarpignato, Adam Shreading, Jesse Watson, Chad Wilsey
Whooping and sandhill cranes visit upland ponds proportional to migration phenology on the Texas coast
Two crane species, whooping cranes (Grus americana) and sandhill cranes (Antigone canadensis), overwinter along the Texas Gulf Coast. Periodic, extreme drought conditions have prompted concerns that potential freshwater limitations could hinder conservation of cranes, especially endangered whooping cranes. In response, land managers constructed and maintained freshwater ponds in upland areas near
Authors
Matthew J Butler, Kristine L. Metzger, Colt R. Sanspree, James W. Cain, Grant M Harris
Yuma Ridgway’s rail selenium exposure and occupancy within managed and unmanaged emergent marshes at the Salton Sea
Yuma Ridgway’s rail (Rallus obsoletus yumanensis, hereafter, rail) is an endangered species for which patches of emergent marsh within the Salton Sea watershed comprise a substantial part of habitat for the species’ disjointed range in the southwestern United States. These areas of emergent marsh include (1) marshes managed by federal (particularly the U.S. Fish and Wildlife Service’s Sonny Bono S
Authors
Mark A. Ricca, Cory T. Overton, Thomas W. Anderson, Angela Merritt, Eamon Harrity, Elliott Matchett, Michael L. Casazza
Oklahoma and Landsat
Oklahoma benefits from a varied landscape abundant in resources. Mountains, grasslands, reservoirs, rivers, fields, and forests offer employment and enjoyment in a State that epitomizes the transition from north to south and east to west. Wheat grows in northern Oklahoma; cotton grows in the south. Wetter deciduous forest lands in the southeast contrast with drier mesas in the northwest. Among the
Authors
Geospatial analysis delineates lode gold prospectivity in Alaska
Comprehensive, data-driven geographic information system analyses utilize publicly available lithologic, geochemical, geophysical, and mineral occurrence datasets to delineate gold resource potential in Alaska. These prospectivity analyses successfully identify areas containing known lode gold occurrences, expand areas of high prospectivity around known occurrences, improve the precision of deline
Authors
Susan M. Karl, Douglas C. Kreiner, George N. D. Case, Keith A. Labay
Accelerated sea-level rise is suppressing CO2 stimulation of tidal marsh productivity: A 33-year study
Accelerating relative sea-level rise (RSLR) is threatening coastal wetlands. However, rising CO2 concentrations may also stimulate carbon sequestration and vertical accretion, counterbalancing RSLR. A coastal wetland dominated by a C3 plant species was exposed to ambient and elevated levels of CO2 in situ from 1987 to 2019 during which time ambient CO2 concentration increased 18% and sea level ros
Authors
Chunwu Zhu, J. Adam Langley, Lewis H. Ziska, Donald Cahoon, J. Patrick Megonigal
Variation of cisco egg size among Laurentian Great Lakes populations
Many fish species display inter-population and inter-individual egg size variation. Intra-specific differences in egg size seemingly reflect both energetic experiences of individual spawning fish and long-term population responses to differing ecosystems. Optimal egg size theory implies that selection influences a population’s mean egg size in response to its early-life environment, given the well
Authors
Scott T Koenigbauer, Daniel Yule, Kristopher Dey, Chris Olds, Michael J. Connerton, Tomas O Höök
Continuous stream discharge, salinity, and associated data collected in the lower St. Johns River and its tributaries, Florida, 2020
The U.S. Army Corps of Engineers, Jacksonville District, is deepening the St. Johns River channel in Jacksonville, Florida, from 40 to 47 feet along 13 miles of the river channel beginning at the mouth of the river at the Atlantic Ocean, in order to accommodate larger, fully loaded cargo vessels. The U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, monitored stage, dis
Authors
Patrick J. Ryan
Water quality in the Missouri River alluvial aquifer near the Independence, Missouri, well field, 1997–2018
Groundwater-quality data collected from 1997 through 2018 from 68 monitoring locations open to the Missouri River alluvial aquifer (hereafter referred to as the “alluvial aquifer”) near the Independence, Missouri, well field were analyzed by the U.S. Geological Survey, in cooperation with the City of Independence, Missouri. This analysis was done to assess the quality of the water in the alluvial
Authors
Robert T. Kay, Heather M. Krempa, Katie M. Hulsey
Aqueous geochemistry of waters and hydrogeology of alluvial deposits, Pinnacles National Park, California
A cooperative study between the National Park Service (NPS) and the U.S. Geological Survey (USGS) characterized groundwater quality and hydrogeology in parts of Pinnacles National Park. The water-quality investigation assessed the geochemistry of springs, wells, surface water, and precipitation and analyzed geochemistry of rock formations that affect the water chemistry through water-rock interact
Authors
Kathleen Scheiderich, Claire R. Tiedeman, Paul A. Hsieh