Publications
The USGS publishes peer-reviewed reports and journal articles which are used by Chesapeake Bay Program resource managers and policy makers to make science-based decisions for ecosystem conservation and restoration. Use the Search box below to find publications on selected topics.
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Filter Total Items: 901
SIMULATING FLOW IN THE TIDAL POTOMAC RIVER.
A one-dimensional unsteady flow model has been applied to the tidal Potomac River, including its major tributaries and marginal embayments, between Washington, D. C. and Indian Head, Md. The computer model has been calibrated to simulate the combined effects of tide, freshwater inflows, and wind conditions governing flow in the system of channels. The comprehensive flow data provided by the model
Authors
Raymond W. Schaffranek
Distribution and abundance of submersed aquatic vegetation in the tidal Potomac River and Estuary, Maryland and Virginia, May 1978 to November 1981
No abstract available.
Authors
Virginia Carter, James E. Paschal, Nancy C. Bartow
Phytoplankton Abundance and Generic Composition Data for the Potomac River and Estuary, Maryland
Phytoplankton of the Potomac River and Estuary were counted and identified to the generic level. Double-blind precision tests for an individual counter yielded a standard deviation that was * 10 percent of the mean. Differences between three counters exceeded * 10 percent, and a curve could be fit to calibration counts to yield correlation coefficients of 0.70 to 0.86 between counters. Counters id
Authors
R.R.H. Cohen, S.O. Pollock, V.E. Stoelzel, K.E. Boulukos
Hydrilla verticillata in the tidal Potomac River, Maryland, Virginia, and the District of Columbia, 1983 and 1984
No abstract available.
Authors
N. B. Rybicki, Virginia Carter, R. T. Anderson, T. J. Trombley
Evaluation and use of a diffusion-controlled sampler for determining chemical and dissolved oxygen gradients at the sediment-water interface
Field and laboratory evaluations were made of a simple, inexpensive diffusion-controlled sampler with ports on two sides at each interval which incorporates 0.2-??m polycarbonate membrane to filter samples in situ. Monovalent and divalent ions reached 90% of equilibrium between sampler contents and the external solution within 3 and 6 hours, respectively. Sediment interstitial water chemical gradi
Authors
N.S. Simon, M.M. Kennedy, C.S. Massoni
Relationship between reported commercial landings and abundance of young striped bass in Chesapeake Bay, Maryland
No abstract available.
Authors
C.P. Goodyear
An aerial photographic census of Chesapeake Bay and North Carolina canvasbacks
Conventional 35 mm photography was used to conduct an aerial photographic census of canvasbacks (A. valisineria) throughout Chesapeake Bay (tidal Maryland and Virginia) and coastal North Carolina, Jan. 26-30, 1981. Flock size and sex ratio characteristics were determined from examination of color transparencies of 165 canvasback flocks totaling > 95,000 birds. A sex ratio of 2.91 males/female was
Authors
G. M. Haramis, J.R. Goldsberry, D.G. McAuley, E.L. Derleth
The effects of grazers and light penetration on the survival of transplants of Vallisneria americana Michs in the tidal Potomac River, Maryland
Poor light penetration and grazing are among the factors potentially responsible for the lack of submersed aquatic macrophytes in the tidal Potomac River. Between 1980 and 1983, plugs, springs and tubers of Vallisneria americana Michx were transplanted from the oligohaline Potomac Estuary to six sites in the freshwater tidal Potomac River. Transplants made in 1980 and 1981 were generally successfu
Authors
Virginia Carter, Nancy B. Rybicki
Analysis of potential yield per recruit for striped bass produced in Chesapeake Bay
No abstract available.
Authors
C.P. Goodyear
Effects of fishing on the reproductive capacity of striped bass in Chesapeake Bay, Maryland
No abstract available at this time
Authors
J. Boreman, C.P. Goodyear
Methods for the collection of geochemical data from the sediments of the tidal Potomac River and estuary and data for 1978-1980
The chemical composition of bottom sediments and their associated pore waters from the tidal Potomac River and Estuary was studied from May 1978 through June 1980. Pore waters were routinely analyzed for pH, Eh, alkalinity, and concentrations of sulfide, sulfate, phosphate, carbon, ammonium, silica, iron, manganese, chloride, sodium, potassium, calcium, and magnesium. Porosity, weight loss on igni
Authors
S.D. Goodwin, B.I. Schultz, D.L. Parkhurst, N.S. Simon, Edward Callender