Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16783
Quaternary displacement rates on the Meeman‐Shelby fault and Joiner ridge horst, eastern Arkansas: Results from coring Mississippi River alluvium
This research used coring and optically stimulated luminescence (OSL) dating of displaced, deeply buried Quaternary alluvium to determine vertical displacement rates for the Meeman‐Shelby fault and the Joiner ridge horst, two structures in northeastern Arkansas that have no modern seismicity associated with them. We drilled continuous cores of the entire alluvial section in the hanging wall of eac
Authors
Alex Ward, Ronald C. Counts, Roy Van Arsdale, Daniel Larsen, Shannon A. Mahan
Multi-year microbial source tracking study characterizing fecal contamination in an urban watershed
Microbiological and hydrological data were used to rank tributary stream contributions of bacteria to the Little Blue River in Independence, Missouri. Concentrations, loadings and yields of E. coli and microbial source tracking (MST) markers, were characterized during base flow and storm events in five subbasins within Independence, as well as sources entering and leaving the city through the rive
Authors
Rebecca N. Bushon, Amie M.G. Brady, Eric D. Christensen, Erin A. Stelzer
Confirmation of the southwest continuation of the Cat Square terrane, southern Appalachian Inner Piedmont, with implications for middle Paleozoic collisional orogenesis
Detailed geologic mapping, U-Pb zircon geochronology and whole-rock geochemical analyses were conducted to test the hypothesis that the southwestern extent of the Cat Square terrane continues from the northern Inner Piedmont (western Carolinas) into central Georgia. Geologic mapping revealed the Jackson Lake fault, a ∼15 m-thick, steeply dipping sillimanite-grade fault zone that truncates litholog
Authors
Matthew T. Huebner, Robert D. Hatcher, Arthur J. Merschat
Donor life stage influences juvenile American eel Anguilla rostrata attraction to conspecific chemical cues
The present study investigated the potential role of conspecific chemical cues in inland juvenile American eel Anguilla rostrata migrations by assessing glass eel and 1 year old elver affinities to elver washings, and elver affinity to adult yellow eel washings. In two-choice maze assays, glass eels were attracted to elver washings, but elvers were neither attracted to nor repulsed by multiple con
Authors
Heather S. Galbraith, Carrie J. Blakeslee, Andrew K. Schmucker, Nicholas S. Johnson, Michael J. Hansen, Weiming Li
Mineral commodity summaries 2017
This report is the earliest Government publication to furnish estimates covering 2016 nonfuel mineral industry data. Data sheets contain information on the domestic industry structure, Government programs, tariffs, and 5-year salient statistics for more than 90 individual minerals and materials.
Authors
Joyce A. Ober
Tambora and the mackerel year: Phenology and fisheries during an extreme climate event
Global warming has increased the frequency of extreme climate events, yet responses of biological and human communities are poorly understood, particularly for aquatic ecosystems and fisheries. Retrospective analysis of known outcomes may provide insights into the nature of adaptations and trajectory of subsequent conditions. We consider the 1815 eruption of the Indonesian volcano Tambora and its
Authors
Karen E. Alexander, William B. Leavenworth, Carolyn Hall, Steven Mattocks, Steven M. Bittner, Emily Klein, Michelle D. Staudinger, Alexander Bryan, Julianne Rosset, Theodore V. Willis, Benjamin H. Carr, Adrian Jordaan
Influence of poisoned prey on foraging behavior of ferruginous hawks
We recorded 19 visits by ferruginous hawks (Buteo regalis) over 6 d at two black–tailed prairie dog (Cynomys ludovicianus) subcolonies poisoned with the rodenticide Rozol® Prairie Dog Bait (0.005% chlorophacinone active ingredient) and at an adjacent untreated subcolony. Before Rozol® application ferruginous hawks foraged in the untreated and treated subcolonies but after Rozol® application predat
Authors
Nimish B. Vyas, Frank Kuncir, Criss C. Clinton
Development of a coupled wave-flow-vegetation interaction model
Emergent and submerged vegetation can significantly affect coastal hydrodynamics. However, most deterministic numerical models do not take into account their influence on currents, waves, and turbulence. In this paper, we describe the implementation of a wave-flow-vegetation module into a Coupled-Ocean-Atmosphere-Wave-Sediment Transport (COAWST) modeling system that includes a flow model (ROMS) an
Authors
Alexis Beudin, Tarandeep S. Kalra, Neil K. Ganju, John C. Warner
Hydrologic and hydraulic analyses of Great Meadow wetland, Acadia National Park, Maine
The U.S. Geological Survey completed hydrologic and hydraulic analyses of Cromwell Brook and the Sieur de Monts tributary in Acadia National Park, Maine, to better understand causes of flooding in complex hydrologic and hydraulic environments, like those in the Great Meadow wetland and Sieur de Monts Spring area. Regional regression equations were used to compute peak flows with from 2 to 100-year
Authors
Pamela J. Lombard
A carbon balance model for the great dismal swamp ecosystem
BackgroundCarbon storage potential has become an important consideration for land management and planning in the United States. The ability to assess ecosystem carbon balance can help land managers understand the benefits and tradeoffs between different management strategies. This paper demonstrates an application of the Land Use and Carbon Scenario Simulator (LUCAS) model developed for local-scal
Authors
Rachel Sleeter, Benjamin M. Sleeter, Brianna Williams, Dianna M. Hogan, Todd Hawbaker, Zhiliang Zhu
Climate-mediated competition in a high-elevation salamander community
The distribution of the federally endangered Shenandoah Salamander (Plethodon shenandoah) is presumed to be limited by competition with the Red-backed Salamander (Plethodon cinereus). In particular, the current distribution of P. shenandoah is understood to be restricted to warmer and drier habitats because of interspecific interactions. These habitats may be particularly sensitive to climate chan
Authors
Eric A. Dallalio, Adrianne B. Brand, Evan H. Campbell Grant