Publications
These publications showcase the significant science conducted in our Science Centers.
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Interactive PHREEQ-N-AMDTreat water-quality modeling tools to evaluate performance and design of treatment systems for acid mine drainage Interactive PHREEQ-N-AMDTreat water-quality modeling tools to evaluate performance and design of treatment systems for acid mine drainage
The PHREEQ-N-AMDTreat aqueous geochemical modeling tools described herein simulate changes in pH and solute concentrations resulting from passive and active treatment of acidic or alkaline mine drainage (AMD). The “user-friendly” interactive tools, which are publicly available software, utilize PHREEQC equilibrium aqueous and surface speciation models and kinetics models for O2 ingassing...
Authors
Charles A. Cravotta
Optimal sampling design for spatial capture‐recapture Optimal sampling design for spatial capture‐recapture
Spatial capture‐recapture (SCR) has emerged as the industry standard for estimating population density by leveraging information from spatial locations of repeat encounters of individuals. The precision of density estimates depends fundamentally on the number and spatial configuration of traps. Despite this knowledge, existing sampling design recommendations are heuristic and their...
Authors
Gates Dupont, J. Andrew Royle, Muhammad Ali Nawaz, Chris Sutherland
Ideas and perspectives: A strategic assessment of methane and nitrous oxide measurements in the marine environment Ideas and perspectives: A strategic assessment of methane and nitrous oxide measurements in the marine environment
>In the current era of rapid climate change, accurate characterization of climate-relevant gas dynamics – namely production, consumption, and net emissions – is required for all biomes, especially those ecosystems most susceptible to the impact of change. Marine environments include regions that act as net sources or sinks for numerous climate-active trace gases including methane (CH4)...
Authors
S.T. Wilson, A.N. Al-Haj, A. Bourbonnais, C. Frey, R.W. Fulweiler, John D. Kessler, H.K. Marchant, J Milucka, N.E. Ray, P Suntharalingham, B.F. Thornton, R.C. Upstill-Goddard, T.S. Weber, D.L. Arévalo-Martínez, H.W. Bange, H.M. Benway, D. Bianchi, A.V. Borges, B.X. Chang, P.M. Crill, D.A. del Valle, L. Farias, S.B. Joye, A. Kock, J Labidi, C.C. Manning, John Pohlman, G. Rehder, K.J. Sparrow, P.D. Tortell, T. Truede, D.L. Valentine, B.B. Ward, S. Yang, L.N. Yurganov
Assessment of Ambystomatid salamander populations and their breeding habitats in the Delaware Water Gap National Recreation Area Assessment of Ambystomatid salamander populations and their breeding habitats in the Delaware Water Gap National Recreation Area
This report presents abundance and occurrence data for three species of ambystomad salamanders (Ambystoma maculatum, A. jeffersonianum, and A. opacum) collected over a 3-year period (2000, 2001, and 2002) at 200 potentional breeding sies within the Delaware Water Gap National Recreation Area (DEWA). In addition, numerous measures of inpond, near-pond, and landscape attributes were...
Authors
Craig D. Snyder, John A. Young, James T. Julian, Tim L. King, Shanon E. Julian
U.S. mineral supply chain security in the age of pandemics and trade wars U.S. mineral supply chain security in the age of pandemics and trade wars
Modern technology makes use of numerous mineral commodities whose production is concentrated in a few countries. New research identifies the commodities whose supply disruption poses the greatest risk to the manufacturing sector. While the analysis is applied to the U.S. manufacturing sector, the principles are equally applicable to other economies heavily reliant on imported mineral...
Authors
Nedal Nassar, Steven M. Fortier
Evaluation of a roughness length parametrization accounting for wind–wave alignment in a coupled atmosphere–wave model Evaluation of a roughness length parametrization accounting for wind–wave alignment in a coupled atmosphere–wave model
The importance of wind energy as an alternative energy source has increased over the latest years with more focus on offshore winds. A good estimation of the offshore winds is thus of major importance for this industry. Up to now the effect of the wind–wave (mis)alignment has not yet been taken into account in coupled atmosphere–wave models to study the vertical wind profile and power...
Authors
Sara Porchetta, O. Temel, John C. Warner, J.C. Munoz-Esparza, J Monbaliu, J. van Beeck, N. van Lipzig
Retrospective analysis of estrogenic endocrine disruption and land-use influences in the Chesapeake Bay watershed Retrospective analysis of estrogenic endocrine disruption and land-use influences in the Chesapeake Bay watershed
The Chesapeake Bay is the largest estuary in the United States and its watershed includes river drainages in six states and the District of Columbia. Sportfishing is of major economic interest, however, the rivers within the watershed provide numerous other ecological, recreational, cultural and economic benefits, as well as serving as a drinking water source for millions of people...
Authors
Vicki S. Blazer, Stephanie E. Gordon, Daniel K. Jones, Luke R. Iwanowicz, Heather L. Walsh, Adam Sperry, Kelly L. Smalling
Sediment dynamics of a divergent bay–marsh complex Sediment dynamics of a divergent bay–marsh complex
Bay–marsh systems, composed of an embayment surrounded by fringing marsh incised by tidal channels, are widely distributed coastal environments. External sediment availability, marsh-edge erosion, and sea-level rise acting on such bay–marsh complexes may drive diverse sediment-flux regimes. These factors reinforce the ephemeral and dynamic nature of fringing marshes: material released by...
Authors
Daniel J. Nowacki, Neil K. Ganju
Ancient Egyptian mummified shrews (Mammalia: Eulipotyphla: Soricidae) and mice (Rodentia: Muridae) from the Spanish Mission to Dra Abu el-Naga, and their implications for environmental change in the Nile valley during the past two millennia Ancient Egyptian mummified shrews (Mammalia: Eulipotyphla: Soricidae) and mice (Rodentia: Muridae) from the Spanish Mission to Dra Abu el-Naga, and their implications for environmental change in the Nile valley during the past two millennia
Excavation of Ptolemaic Period (ca. 309–30 BC) strata within Theban Tombs 11, 12, -399-, and UE194A by the Spanish Mission to Dra Abu el-Naga (also known as the Djehuty Project), on the west bank of the Nile River opposite Luxor, Egypt, yielded remains of at least 175 individual small mammals that include four species of shrews (Eulipotypha: Soricidae) and two species of rodents...
Authors
Neal Woodman, Salima Ikram
Along-margin variations in breakup volcanism at the Eastern North American Margin Along-margin variations in breakup volcanism at the Eastern North American Margin
We model the magnetic signature of rift-related volcanism to understand the distribution and volumeofmagmatic activity that occurred during the breakup of Pangaea and early Atlantic opening at the Eastern North American Margin (ENAM).Along-strike variations in the amplitude and character of the prominent East Coast Magnetic Anomaly (ECMA) suggest that the emplacement of the volcanic...
Authors
John A. Greene, Masako Tominaga, Nathaniel C. Miller
Cortisol is an osmoregulatory and glucose-regulating hormone in Atlantic sturgeon, a basal ray-finned fish Cortisol is an osmoregulatory and glucose-regulating hormone in Atlantic sturgeon, a basal ray-finned fish
Our current understanding of the hormonal control of ion regulation in aquatic vertebrates comes primarily from studies on teleost fishes, with relatively little information on more basal fishes. We investigated the role of cortisol in regulating seawater tolerance and its underlying mechanisms in an anadromous chondrostean, the Atlantic sturgeon (Acipenser oxyrinchus). Exposure of...
Authors
Stephen D. McCormick, Meghan L. Taylor, Amy M. Regish
Using tracer variance decay to quantify variability of salinity mixing in the Hudson River Estuary Using tracer variance decay to quantify variability of salinity mixing in the Hudson River Estuary
The salinity structure in an estuary is controlled by time‐dependent mixing processes. However, the locations and temporal variability of where significant mixing occurs is not well‐understood. Here we utilize a tracer variance approach to demonstrate the spatial and temporal structure of salinity mixing in the Hudson River Estuary. We run a 4‐month hydrodynamic simulation of the tides...
Authors
John C. Warner, W Rockwill Geyer, David K. Ralston, Tarandeep S. Kalra