Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16780
Hydrogeology of, simulation of groundwater flow in, and potential effects of sea-level rise on the Kirkwood-Cohansey aquifer system in the vicinity of Edwin B. Forsythe National Wildlife Refuge, New Jersey
The Edwin B. Forsythe National Wildlife Refuge encompasses more than 47,000 acres of New Jersey coastal habitats, including salt marshes, freshwater wetlands, tidal wetlands, barrier beaches, woodlands, and swamps. The refuge is along the Atlantic Flyway and provides breeding habitat for fish, migratory birds, and other wildlife species. The refuge area may be threatened by global climate change,
Authors
Alex R. Fiore, Lois M. Voronin, Christine M. Wieben
Development of Raman spectroscopy as a thermal maturity proxy in unconventional resource assessment
The objective of this study was to correlate shale hydrous pyrolysis with thermal maturity measurements based on solid bitumen reflectance (BRo) at the U.S. Geological Survey (USGS) and Raman microscopy (RM) at WellDog. In semi-blind Phase I, BRo values of the initial set of 8 samples were withheld prior to RM analysis. As reported previously, a strong correlation was observed between BRo and Rama
Authors
Grant A. Myers, Kelsey Kehoe, Paul C. Hackley
Spatial organization of the gastrointestinal microbiota in urban Canada geese
Recent reviews identified the reliance on fecal or cloacal samples as a significant limitation hindering our understanding of the avian gastrointestinal (gut) microbiota and its function. We investigated the microbiota of the esophagus, duodenum, cecum, and colon of a wild urban population of Canada goose (Branta canadensis). From a population sample of 30 individuals, we sequenced the V4 region o
Authors
Sergei V. Drovetski, Michael O'Mahoney, Emma J. Ransome, Kenan O. Matterson, Haw Chuan Lim, Terry Chesser, Gary R. Graves
Downstream fish passage guide walls: A hydraulic scale model analysis
Partial-depth guide walls are used to improve passage efficiency and reduce the delay of out-migrating anadromous fish species by guiding fish to a bypass route (i.e. weir, pipe, sluice gate) that circumvents the turbine intakes, where survival is usually lower. Evaluation and monitoring studies, however, indicate a high propensity for some fish to pass underneath, rather than along, the guide wal
Authors
Kevin Mulligan, Brett Towler, Alexander J. Haro, David P. Ahlfeld
Spatial capture–recapture with partial identity: An application to camera traps
Camera trapping surveys frequently capture individuals whose identity is only known from a single flank. The most widely used methods for incorporating these partial identity individuals into density analyses discard some of the partial identity capture histories, reducing precision, and, while not previously recognized, introducing bias. Here, we present the spatial partial identity model (SPIM),
Authors
Ben C. Augustine, J. Andrew Royle, Marcella J. Kelly, Christopher B. Satter, Robert S. Alonso, Erin E. Boydston, Kevin R. Crooks
Preliminary stage and streamflow data at selected U.S. Geological Survey streamgages in Maine and New Hampshire for the flood of October 30–31, 2017
Rainfall from a storm on October 24–27, 2017, and Tropical Storm Philippe on October 29–30, created conditions that led to flooding across portions of New Hampshire and western Maine. On the basis of streamflow data collected at 30 selected U.S. Geological Survey (USGS) streamgages in the Androscoggin River, Connecticut River, Merrimack River, and Saco River Basins, the storms caused minor to mode
Authors
Richard G. Kiah, Nicholas W. Stasulis
Estimates of nitrate loads and yields from groundwater to streams in the Chesapeake Bay watershed based on land use and geology
The water quality of the Chesapeake Bay may be adversely affected by dissolved nitrate carried in groundwater discharge to streams. To estimate the concentrations, loads, and yields of nitrate from groundwater to streams for the Chesapeake Bay watershed, a regression model was developed based on measured nitrate concentrations from 156 small streams with watersheds less than 500 square miles (mi2
Authors
Silvia Terziotti, Paul D. Capel, Anthony J. Tesoriero, Jessica A. Hopple, Scott C. Kronholm
Changes in freshwater mussel communities linked to legacy pollution in the Lower Delaware River
Freshwater mussels are among the most-imperiled organisms worldwide, although they provide a variety of important functions in the streams and rivers they inhabit. Among Atlantic-slope rivers, the Delaware River is known for its freshwater mussel diversity and biomass; however, limited data are available on the freshwater mussel fauna in the lower, non-tidal portion of the river. This section of t
Authors
Carrie J. Blakeslee, Erik L. Silldorff, Heather S. Galbraith
Carbon budget of tidal wetlands, estuaries, and shelf waters of eastern North America
Carbon cycling in the coastal zone affects global carbon budgets and is critical for understanding the urgent issues of hypoxia, acidification, and tidal wetland loss. However, there are no regional carbon budgets spanning the three main ecosystems in coastal waters: tidal wetlands, estuaries, and shelf waters. Here we construct such a budget for eastern North America using historical data, empiri
Authors
R.G. Najjar, M. Herrmann, Richard B. Alexander, E. W. Boyer, D. J. Burdige, D. Butman, W.-J. Cai, E.A. Canuel, R.F. Chen, M. A. M. Friedrichs, R.A. Feagin, P. C. Griffith, A.L. Hinson, J.R. Holmquist, X. Hu, W.M. Kemp, Kevin D. Kroeger, A. Mannino, S.L. McCallister, W.R. McGillis, M.R. Mulholland, C. H. Pilskaln, J. Salisbury, S. R. Signorini, P. St. Laurent, H. Tian, M Tzortziou, P. Vlahos, Zhanming Wan, R. C. Zimmerman
Sensitivity of Na+/K+-ATPase isoforms to acid and aluminum explains differential effects on Atlantic salmon osmoregulation in fresh water and seawater
Atlantic salmon (Salmo salar) smolts are sensitive to acid rain and associated increases in dissolved inorganic aluminum (Al) resulting in decreased seawater tolerance at this critical life stage. Salmon have two major isoforms of the catalytic alpha subunit of Na+/K+-ATPase (NKA), with NKAα1a being the major freshwater (FW) isoform and NKAα1b the major seawater (SW) isoform. Here we evaluate phys
Authors
Amy M. Regish, John T. Kelly, Michael F. O'Dea, Stephen D. McCormick
Freshwater mussel salvage and relocation at the Pond Eddy Bridge, Delaware River, New York and Pennsylvania
In a study conducted by the U.S. Geological Survey, in cooperation with the Pennsylvania Department of Transportation, freshwater mussels were salvaged and relocated from the anticipated zone of impact for the Pond Eddy Bridge construction project in New York and Pennsylvania. Five 25-meter (m) by 25-m cells along the Pennsylvania bank of the Delaware River were sampled in three generally straight
Authors
Heather S. Galbraith, Carrie J. Blakeslee, Jeffrey C. Cole
Environmental, anthropogenic, and dietary influences on fine-scale movement patterns of Atlantic salmon through challenging waters
Partial barriers to migration can affect migratory fish population dynamics and be influenced by many biotic, abiotic, and anthropogenic factors, including nutritional deficiencies. We investigated how such variables (including a thiamine deficiency) impact fine-scale movement of landlocked Atlantic salmon (Salmo salar) by treating returning spawners with thiamine and observing their attempts to c
Authors
Andrew B. Harbicht, Theodore R. Castro-Santos, Dimitry Gorsky, D.M. Hand, D.J. Fraser, W.R. Ardren