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
Hydrologic connectivity to streams increases nitrogen and phosphorus inputs and cycling in soils of created and natural floodplain wetlands
Greater connectivity to stream surface water may result in greater inputs of allochthonous nutrients that could stimulate internal nitrogen (N) and phosphorus (P) cycling in natural, restored, and created riparian wetlands. This study investigated the effects of hydrologic connectivity to stream water on soil nutrient fluxes in plots (n = 20) located among four created and two natural freshwater w
Authors
Kristin L. Wolf, Gregory B. Noe, Changwoo Ahn
Chesapeake Bay hypoxic volume forecasts and results: June 18, 2013
The 2013 Forecast - Given the average Jan-May 2013 total nitrogen load of 162,028 kg/day, this summer’s hypoxia volume forecast is 6.1 km3, slightly smaller than average size for the period of record and almost the same as 2012.
Authors
Donald Scavia, Mary Anne Evans
Total nutrient and sediment loads, trends, yields, and nontidal water-quality indicators for selected nontidal stations, Chesapeake Bay Watershed, 1985–2011
The U.S. Geological Survey, in cooperation with Chesapeake Bay Program (CBP) partners, routinely reports long-term concentration trends and monthly and annual constituent loads for stream water-quality monitoring stations across the Chesapeake Bay watershed. This report documents flow-adjusted trends in sediment and total nitrogen and phosphorus concentrations for 31 stations in the years 1985–201
Authors
Michael J. Langland, Joel D. Blomquist, Douglas Moyer, Kenneth Hyer, Jeffrey G. Chanat
Developing a new stream metric for comparing stream function using a bank-floodplain sediment budget: a case study of three Piedmont streams
A bank and floodplain sediment budget was created for three Piedmont streams tributary to the Chesapeake Bay. The watersheds of each stream varied in land use from urban (Difficult Run) to urbanizing (Little Conestoga Creek) to agricultural (Linganore Creek). The purpose of the study was to determine the relation between geomorphic parameters and sediment dynamics and to develop a floodplain trapp
Authors
Edward R. Schenk, Cliff R. Hupp, Allen Gellis, Greg Noe
Chemical contaminants in water and sediment near fish nesting sites in the Potomac River basin: determining potential exposures to smallmouth bass (Micropterus dolomieu)
The Potomac River basin is an area where a high prevalence of abnormalities such as testicular oocytes (TO), skin lesions, and mortality has been observed in smallmouth bass (SMB, Micropterus dolomieu). Previous research documented a variety of chemicals in regional streams, implicating chemical exposure as one plausible explanation for these biological effects. Six stream sites in the Potomac bas
Authors
Dana W. Kolpin, Vicki Blazer, James L. Gray, Michael J. Focazio, John A. Young, David A. Alvarez, Luke R. Iwanowicz, William T. Foreman, Edward T. Furlong, Gary K. Speiran, Steven D. Zaugg, Laura E. Hubbard, Michael T. Meyer, Mark W. Sandstrom, Larry B. Barber
Reproductive health of yellow perch Perca flavescens in selected tributaries of the Chesapeake Bay
Reduced recruitment of yellow perch has been noted for a number of years in certain urbanized watersheds (South and Severn Rivers) of the Chesapeake Bay. Other rapidly developing watersheds such as Mattawoman Creek are more recently showing evidence of reduced recruitment of anadromous fishes. In this study, we used a battery of biomarkers to better document the reproductive health of adult yellow
Authors
Vicki Blazer, Alfred E. Pinkney, Jill A. Jenkins, Luke R. Iwanowicz, Steven Minkkinen, Rassa O. Draugelis-Dale, James H. Uphoff
Defining a data management strategy for USGS Chesapeake Bay studies
The mission of U.S. Geological Survey’s (USGS) Chesapeake Bay studies is to provide integrated science for improved understanding and management of the Chesapeake Bay ecosystem. Collective USGS efforts in the Chesapeake Bay watershed began in the 1980s, and by the mid-1990s the USGS adopted the watershed as one of its national place-based study areas. Great focus and effort by the USGS have been d
Authors
Cassandra Ladino
A regional classification of the effectiveness of depressional wetlands at mitigating nitrogen transport to surface waters in the Northern Atlantic Coastal Plain
Nitrogen from nonpoint sources contributes to eutrophication, hypoxia, and related ecological degradation in Atlantic Coastal Plain streams and adjacent coastal estuaries such as Chesapeake Bay and Pamlico Sound. Although denitrification in depressional (non-riparian) wetlands common to the Coastal Plain can be a significant landscape sink for nitrogen, the effectiveness of individual wetlands at
Authors
Scott W. Ator, Judith M. Denver, Andrew E. LaMotte, Andrew J. Sekellick
Hydrogeomorphology influences soil nitrogen and phosphorus mineralization in floodplain wetlands
Conceptual models of river–floodplain systems and biogeochemical theory predict that floodplain soil nitrogen (N) and phosphorus (P) mineralization should increase with hydrologic connectivity to the river and thus increase with distance downstream (longitudinal dimension) and in lower geomorphic units within the floodplain (lateral dimension). We measured rates of in situ soil net ammonification,
Authors
Gregory B. Noe, Cliff R. Hupp, Nancy B. Rybicki
Hydrologic connectivity to streams increases nitrogen and phosphorus inputs and cycling in soils of created and natural floodplain wetlands
Greater connectivity to stream surface water may result in greater inputs of allochthonous nutrients that could stimulate internal nitrogen (N) and phosphorus (P) cycling in natural, restored, and created riparian wetlands. This study investigated the effects of hydrologic connectivity to stream water on soil nutrient fluxes in plots (n = 20) located among four created and two natural freshwater w
Authors
Kristin L. Wolf, Gregory Noe, Changwoo Ahn
Bacterial etiology in diseased fishes, primarily smallmouth bass Micropterus dolomieu, within the Chesapeake Bay drainage in 2009-2011
No abstract available.
Authors
Clifford E. Starliper, Vicki Blazer, Luke R. Iwanowicz, Heather L. Walsh
Chesapeake Bay waterbirds, sea-level rise, and island restoration
No abstract available.
Authors
R. Michael Erwin