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: 963
The seventy-fourth Christmas bird count. 315. Southern Dorchester County, Md The seventy-fourth Christmas bird count. 315. Southern Dorchester County, Md
Because limited information is available regarding preferences for nocturnal habitat during winter, we studied use of nocturnal habitats by American woodcock (Scolopax minor) wintering in the Georgia Piedmont (1994-95). During the evening crepuscular period, woodcock on the wintering grounds move from forested to field habitats, presumably to feed, conduct courtship displays, roost, and...
Authors
James Berdeen, D.G. Krementz
Yields and trends of nutrients and total suspended solids in nontidal areas of the Chesapeake Bay basin, 1985-96 Yields and trends of nutrients and total suspended solids in nontidal areas of the Chesapeake Bay basin, 1985-96
Excessive concentrations of nutrients and suspended solids in water adversely affect water quality in the Chesapeake Bay. High levels of nutrients in the Bay result in algal blooms and suspended solids reduce water clarity, both of which decrease the amount of light reaching submerged aquatic vegetation (SAV). The die off and decomposition of algae and SAV deplete oxygen supplies in the...
Authors
Michael J. Langland
Nutrient and suspended solids loads, yields, and trends in the non-tidal part of five major river basins in Virginia, 1985-96 Nutrient and suspended solids loads, yields, and trends in the non-tidal part of five major river basins in Virginia, 1985-96
No abstract available.
Authors
H.M. Johnson, D.L. Belval
Water quality in the lower Susquehanna River basin, Pennsylvania and Maryland, 1992-95 Water quality in the lower Susquehanna River basin, Pennsylvania and Maryland, 1992-95
This report is intended to summarize major findings that emerged between 1992 and 1995 from the water-quality assessment of the lower Susquehanna River basin study unit and to relate these findings to water-quality issues of regional and national concern. The information is primarily intended for those who are involved in water-resource management. Yet, the information contained here may...
Authors
Bruce D. Lindsey, Kevin J. Breen, Michael D. Bilger, Robin A. Brightbill
Airborne pesticide residues along the Mississippi River Airborne pesticide residues along the Mississippi River
The occurrence, concentration, and geographical distribution of agricultural pesticides were determined in air over the Mississippi River from New Orleans, LA, to St. Paul, MN, during the first 10 days of June 1994. Air samples were collected from a research vessel by pulling air through polyurethane foam plugs at about 100 L/min for up to 24 h. Each sample was analyzed for 42 pesticides...
Authors
M.S. Majewski, W.T. Foreman, D.A. Goolsbys, N. Nakagaki
Water quality in the Potomac River basin, Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia, 1992-96 Water quality in the Potomac River basin, Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia, 1992-96
No abstract available.
Authors
Scott W. Ator, Joel D. Blomquist, John W. Brakebill, Janet M. Denis, Matthew J. Ferrari, Cherie V. Miller, Humbert Zappia
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Effects of nutrient management on quality of surface runoff and ground water at a small carbonate-rock site near Ephrata, Pennsylvania, 1984-90 Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Effects of nutrient management on quality of surface runoff and ground water at a small carbonate-rock site near Ephrata, Pennsylvania, 1984-90
The U.S. Geological Survey and the Pennsylvania Department of Environmental Protection conducted a study from 1984 to 1990 to determine theeffects of the implementation and practice of nutrient management [an agricultural best-management practice (BMP)] on the quality of surface runoff and ground water at a 55-acre crop and livestock farm in carbonate terrain nearEphrata, Pa...
Authors
D. W. Hall, P. L. Lietman, E. J. Koerkle
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Effects of pipe-outlet terracing on quantity and quality of surface runoff and ground water in a small carbonate-rock basin near Churchtown, Pennsylvania Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Effects of pipe-outlet terracing on quantity and quality of surface runoff and ground water in a small carbonate-rock basin near Churchtown, Pennsylvania
Terracing effects on surface-runoff and ground- water quantity and quality were investigated by the U.S. Geological Survey, in cooperation with Pennsylvania Department of Environmental Resources, during 1983-89 at a 23.1-acre agricultural site in Lancaster County, Pa., as part of the 1982 Rural Clean Water Program. The site, underlain by carbonate rock, was primarily corn and alfalfa...
Authors
P. L. Lietman, L. C. Gustafson-Minnich, D. W. Hall
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management
The U.S. Geological Survey, in cooperation with the U.S. Department of Agriculture and Pennsylvania Department of Environmental Protection, investigated the effects of agricultural best-management practices on water quality in the Conestoga River headwaters watershed. This report describes environmental factors and the surface-water and ground-water quality of one 47.5-acre field site...
Authors
E. H. Koerkle, D. W. Hall, D. W. Risser, P. L. Lietman, D. C. Chichester
Overview of the U.S. Geological Survey Chesapeake Bay Ecosystem Program Overview of the U.S. Geological Survey Chesapeake Bay Ecosystem Program
No abstract available.
Authors
Scott Phillips, Bill Caughron
Organic carbon balance and net ecosystem metabolism in Chesapeake Bay Organic carbon balance and net ecosystem metabolism in Chesapeake Bay
The major fluxes of organic carbon associated with physical transport and biological metabolism were compiled, analyzed and compared for the mainstem portion of Chesapeake Bay (USA). In addition, 5 independent methods were used to calculate the annual mean net ecosystem metabolism (NEM = production - respiration) for the integrated Bay. These methods, which employed biogeochemical models...
Authors
W. M. Kemp, E.M. Smith, M. Marvin-DiPasquale, W.R. Boynton