Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Food habits of mute swans in the Chesapeake Bay Food habits of mute swans in the Chesapeake Bay
Unlike the tundra swan (Cygnus columbianus) that migrate to the Bay for the winter, the mute swan (Cygnus olor) is a year long resident and therefore has raised concerns among research managers over reports of conflicts with nesting native water birds and the consumption of submerged aquatic vegetation (SAV). Although data on the reduction of SAV by nesting mute swans and their offspring...
Authors
Matthew C. Perry, P.C. Osenton, E.J.R. Lohnes
On the use of capture-recapture models in mist-net studies On the use of capture-recapture models in mist-net studies
Capture-recapture models provide a statistical framework for estimating population parameters from mist-net data. Although Cormack-Jolly-Seber and related models have recently been used to estimate survival rates of birds sampled with mist nets, we believe that the full potential for use of capture-recapture models has not been realized by many researchers involved in mist-net studies...
Authors
W. L. Kendall, J.R. Sauer, J.D. Nichols, R. Pradel, J.E. Hines
Foreword: Ornithological nomenclature Foreword: Ornithological nomenclature
No abstract available.
Authors
R.C. Banks
Modeling birds: an overview Modeling birds: an overview
No abstract available.
Authors
Jeff S. Hatfield
Estimating survival and movement Estimating survival and movement
No abstract available.
Authors
J.D. Nichols, W. L. Kendall, M.C. Runge
Ecogeomorphology of Spartina patens-dominated tidal marshes: Soil organic matter accumulation, marsh elevation dynamics, and disturbance Ecogeomorphology of Spartina patens-dominated tidal marshes: Soil organic matter accumulation, marsh elevation dynamics, and disturbance
Marsh soil development and vertical accretion in Spartina patens (Aiton) Muhl.-dominated tidal marshes is largely dependent on soil organic matter accumulation from root-rhizome production and litter deposition. Yet there are few quantitative data sets on belowground production and the relationship between soil organic matter accumulation and soil elevation dynamics for this marsh type...
Authors
Donald R. Cahoon, M.A. Ford, P.F. Hensel
Monitoring salt-marsh responses to open marsh water management at U.S. Fish and Wildlife coastal refuges Monitoring salt-marsh responses to open marsh water management at U.S. Fish and Wildlife coastal refuges
No abstract available.
Authors
M.J. James-Pirri, R.M. Erwin, D.J. Prosser, J. Taylor
Mineral resource of the month: copper Mineral resource of the month: copper
Beryllium metal is lighter than aluminum and stiffer than steel. These and other properties, including its strength, dimensional stability, thermal properties and reflectivity, make it useful for aerospace and defense applications, such as satellite and space-vehicle structural components. Beryllium’s nuclear properties, combined with its low density, make it useful as a neutron...
Authors
Daniel L. Edelstein
Influence of near-surface stratigraphy on coastal landslides at Sleeping Bear Dunes National Lakeshore, Lake Michigan, USA Influence of near-surface stratigraphy on coastal landslides at Sleeping Bear Dunes National Lakeshore, Lake Michigan, USA
Lake-level change and landslides are primary controls on the development of coastal environments along the coast of northeastern Lake Michigan. The late Quaternary geology of Sleeping Bear Dunes National Lakeshore was examined with high-resolution seismic reflection profiles, ground-penetrating radar (GPR), and boreholes. Based on sequence-stratigraphic principles, this study recognizes...
Authors
W. A. Barnhardt, B. E. Jaffe, R. E. Kayen, G.R. Cochrane
Coring the Chesapeake Bay impact crater Coring the Chesapeake Bay impact crater
In July 1983, the shipboard scientists of Deep Sea Drilling Project Leg 95 found an unexpected bonus in a core taken 150 kilometers east of Atlantic City, N.J. At Site 612, the scientists recovered a 10-centimeter-thick layer of late Eocene debris ejected from an impact about 36 million years ago. Microfossils and argon isotope ratios from the same layer reveal that the ejecta were part...
Authors
C. Wylie Poag
A new hypothesis and exploratory model for the formation of large-scale inner-shelf sediment sorting and "rippled scour depressions" A new hypothesis and exploratory model for the formation of large-scale inner-shelf sediment sorting and "rippled scour depressions"
Recent observations of inner continental shelves in many regions show numerous collections of relatively coarse sediment, which extend kilometers in the cross-shore direction and are on the order of 100m wide. These "rippled scour depressions" have been interpreted to indicate concentrated cross-shelf currents. However, recent observations strongly suggest that they are associated with...
Authors
A.B. Murray, E.R. Thieler
Physical properties and rock physics models of sediment containing natural and laboratory-formed methane gas hydrate Physical properties and rock physics models of sediment containing natural and laboratory-formed methane gas hydrate
This paper presents results of shear strength and acoustic velocity (p-wave) measurements performed on: (1) samples containing natural gas hydrate from the Mallik 2L-38 well, Mackenzie Delta, Northwest Territories; (2) reconstituted Ottawa sand samples containing methane gas hydrate formed in the laboratory; and (3) ice-bearing sands. These measurements show that hydrate increases shear...
Authors
W.J. Winters, I.A. Pecher, W.F. Waite, D.H. Mason