Unified Interior Regions

Region 1: North Atlantic-Appalachian

Our Science Centers

Our Science Centers

The NAA Region has 15 Science Centers spanning 14 NE States and Washington, DC. The Centers conduct interdisciplinary biologic, geologic, hydrologic, and energy monitoring and research addressing natural resource issues facing our nation.

Learn More

August and September Photo Contests

August and September Photo Contests

Check out the winning photographs in the August and September 2021 Photo Contests! Categories include People, USGS at Work, Where We Work, and Honorable Mention.

See Photos

Regions L2 Landing Page Tabs

Filter Total Items: 16,206
Publication Thumbnail
Year Published: 2016

Greenhouse gas fluxes from salt marshes exposed to chronic nutrient enrichment

We assessed the impact of nutrient additions on greenhouse gas fluxes using dark static chambers in a microtidal and a macrotidal marsh along the coast of New Brunswick, Canada approximately monthly over a year. Both were experimentally fertilized for six years with varying levels of N and P. For unfertilized, N and NPK treatments, average yearly...

Chmura, Gail L.; Kellman, Lisa; van Ardenne, Lee; Guntenspergen, Glenn R.

Publication Thumbnail
Year Published: 2016

Impacts of climate change on land-use and wetland productivity in the Prairie Pothole Region of North America

Wetland productivity in the Prairie Pothole Region (PPR) of North America is closely linked to climate. A warmer and drier climate, as predicted, will negatively affect the productivity of PPR wetlands and the services they provide. The effect of climate change on wetland productivity, however, will not only depend on natural processes (e.g.,...

Rashford, Benjamin S.; Adams, Richard M.; Wu, Jun; Voldseth, Richard A.; Guntenspergen, Glenn R.; Werner, Brett; Johnson, W. Carter

Publication Thumbnail
Year Published: 2016

Survival of female mallards along the Vermont-Quebec border region

Understanding effects of location and timing of harvest seasons on mortality of ducks and geese from hunting is important in forming regulations that sustain viable waterfowl populations throughout their range. During 1990 and 1991 we alternately marked 80 hatching year (HY), female mallards along the Vermont–Quebec border; half with radio-...

Longcore, Jerry R.; McAuley, Daniel G.; Heisey, Dennis M.; Bunck, Christine M.; Clugston, David A.

Publication Thumbnail
Year Published: 2016

Will it rise or will it fall? Managing the complex effects of urbanization on base flow

Sustaining natural levels of base flow is critical to maintaining ecological function as stream catchments are urbanized. Research shows a variable response of stream base flow to urbanization, with base flow or water tables rising in some locations, falling in others, or elsewhere remaining constant. The variable baseflow response is due to the...

Bhaskar, Aditi; Beesley, Leah; Burns, Matthew J.; Fletcher, T. D.; Hamel, Perrine; Oldham, Carolyn; Roy, Allison

Publication Thumbnail
Year Published: 2016

Late Paleocene glyptosaur (Reptilia: Anguidae) osteoderms from South Carolina, USA

Heavily tuberculated glyptosaur osteoderms were collected in an active limestone quarry in northern Berkeley County, South Carolina. The osteoderms are part of a highly diverse late Paleocene vertebrate assemblage that consists of marine, terrestrial, fluvial, and/or brackish water taxa, including chondrichthyan and osteichthyan fish, turtles (...

Cicimurri, David J.; Knight, James L.; Self-Trail, Jean M.; Ebersole, Sandy M.
Cicimurri, D.J., Knight, J.L., Self-Trail, J.M., and Ebersole, S.M., 2016. Journal of Paleontology, v. 90, n. 1, p. 147-153

Publication Thumbnail
Year Published: 2016

Stratigraphic revision of the Cooper Group and the Chandler and Edisto Formations in the Coastal Plain of South Carolina

No abstract available. 

Weems, Robert E.; Albright, Barry; Bybell, Laurel M.; Cicimurri, David J.; Edwards, Lucy E.; Harris, W. Burleigh; Lewis, William C.; Osborne, Jason E.; Sanders, Albert E.; Self-Trail, Jean M.
Weems RE, Bybell LM, Edwards LE, Lewis WC, Self-Trail JM, Albright LB, Cicimurri DJ,Harris WB, Osborne JE, Sanders AE. 2012. Stratigraphic revision of the Cooper Group and theChandler and Edisto Formations in the Coastal Plain of South Carolina. South Carolina Geology49:1–24

Publication Thumbnail
Year Published: 2016

Occurrence and trends in the concentrations of fecal-indicator bacteria and the relation to field water-quality parameters in the Allegheny, Monongahela, and Ohio Rivers and selected tributaries, Allegheny County, Pennsylvania, 2001–09

The U.S. Geological Survey (USGS), in cooperation with the Allegheny County Health Department and Allegheny County Sanitary Authority, collected surface-water samples from the Allegheny, Monongahela, and Ohio Rivers and selected tributaries during the period 2001–09 to assess the occurrence and trends in the concentrations of fecal-indicator...

Fulton, John W.; Koerkle, Edward H.; McCoy, Jamie L.; Zarr, Linda F.
Fulton, J.W., Koerkle, E.H., McCoy, J.L., and Zarr, L.F., 2016, Occurrence and trends in the concentrations of fecal-indicator bacteria and the relation to field water-quality parameters in the Allegheny, Monongahela, and Ohio Rivers and selected tributaries, Allegheny County, Pennsylvania, 2001–09: U.S. Geological Survey Scientific Investigations Report 2015–5136, 47 p., http://dx.doi.org/10.3133/sir20155136.

Publication Thumbnail
Year Published: 2016

Salamander chytrid fungus (Batrachochytrium salamandrivorans) in the United States—Developing research, monitoring, and management strategies

The recently (2013) identified pathogenic chytrid fungus, Batrachochytrium salamandrivorans (Bsal), poses a severe threat to the distribution and abundance of salamanders within the United States and Europe. Development of a response strategy for the potential, and likely, invasion of Bsal into the United States is crucial to protect global...

Campbell Grant, Evan H.; Muths, Erin L.; Katz, Rachel A.; Canessa, Stefano; Adams, M.J.; Ballard, Jennifer R.; Berger, Lee; Briggs, Cheryl J.; Coleman, Jeremy T. H.; Gray, Matthew J.; Harris, M. Camille; Harris, Reid N.; Hossack, Blake R.; Huyvaert, Kathryn P.; Kolby, Jonathan E.; Lips, Karen R.; Lovich, Robert E.; McCallum, Hamish I.; Mendelson, Joseph R.; Nanjappa, Priya; Olson, Deanna H.; Powers, Jenny G.; Richgels, Katherine L. D.; Russell, Robin E.; Schmidt, Benedikt R.; Spitzen-van der Sluijs, Annemarieke; Watry, Mary Kay; Woodhams, Douglas C.; White, C. LeAnn
Grant, E.H.C., Muths, E., Katz, R.A., Canessa, Stefano, Adam, M.J., Ballard, J.R., Berger, Lee, Briggs, C.J., Coleman, Jeremy, Gray, M.J., Harris, M.C., Harris, R.N., Hossack, Blake, Huyvaert, K.P., Kolby, J.E., Lips, K.R., Lovich, R.E., McCallum, H.I., Mendelson, J.R., III, Nanjappa, Priya, Olson, D.H., Powers, J.G., Richgels, K.L.D., Russell, R.E., Schmidt, B.R., Spitzen-van der Sluijs, Annemarieke, Watry, M.K., Woodhams, D.C., and White, C.L., 2016, Salamander chytrid fungus (Batrachochytrium salamandrivorans) in the United States—Developing research, monitoring, and management strategies: U.S. Geological Survey Open-File Report 2015–1233, 16 p., http://dx.doi.org/10.3133/ofr20151233.

Publication Thumbnail
Year Published: 2016

Evidence for an ice shelf covering the central Arctic Ocean during the penultimate glaciation

The hypothesis of a km-thick ice shelf covering the entire Arctic Ocean during peak glacial conditions was proposed nearly half a century ago. Floating ice shelves preserve few direct traces after their disappearance, making reconstructions difficult. Seafloor imprints of ice shelves should, however, exist where ice grounded along their flow paths...

Jakobsson, Martin; Nilsson, Johan; Anderson, Leif G.; Backman, Jan; Bjork, Goran; Cronin, Thomas M.; Kirchner, Nina; Koshurnikov, Andrey; Mayer, Larry; Noormets, Riko; O'Regan, Matthew; Stranne, Christian; Ananiev, Roman; Macho, Natalia Barrientos; Cherniykh, Dennis; Coxall, Helen; Eriksson, Bjorn; Floden, Tom; Gemery, Laura; Gustafsson, Orjan; Jerram, Kevin; Johansson, Carina; Khortov, Alexey; Mohammad, Rezwan; Semiletov, Igor

Publication Thumbnail
Year Published: 2016

Assessing the impact of Hurricanes Irene and Sandy on the morphology and modern sediment thickness on the inner continental shelf offshore of Fire Island, New York

This report documents the changes in seabed morphology and modern sediment thickness detected on the inner continental shelf offshore of Fire Island, New York, before and after Hurricanes Irene and Sandy made landfall. Comparison of acoustic backscatter imagery, seismic-reflection profiles, and bathymetry collected in 2011 and in 2014 show that...

Schwab, William C.; Baldwin, Wayne E.; Denny, Jane F.
Schwab, W.C., Baldwin, W.E., and Denny, J.F., 2016, Assessing the impact of Hurricanes Irene and Sandy on the morphology and modern sediment thickness on the inner continental shelf offshore of Fire Island, New York: U.S. Geological Survey Open-File Report 2015–1238, 15 p., http://dx.doi.org/10.3133/ofr20151238.

Publication Thumbnail
Year Published: 2016

Application of a Weighted Regression Model for Reporting Nutrient and Sediment Concentrations, Fluxes, and Trends in Concentration and Flux for the Chesapeake Bay Nontidal Water-Quality Monitoring Network, Results Through Water Year 2012

In the Chesapeake Bay watershed, estimated fluxes of nutrients and sediment from the bay’s nontidal tributaries into the estuary are the foundation of decision making to meet reductions prescribed by the Chesapeake Bay Total Maximum Daily Load (TMDL) and are often the basis for refining scientific understanding of the watershed-scale...

Chanat, Jeffrey G.; Moyer, Douglas L.; Blomquist, Joel D.; Hyer, Kenneth E.; Langland, Michael J.
Chanat, J.G., Moyer, D.L., Blomquist, J.D., Hyer, K.E., and Langland, M.J., 2016, Application of a weighted regression model for reporting nutrient and sediment concentrations, fluxes, and trends in concentration and flux for the Chesapeake Bay Nontidal Water-Quality Monitoring Network, results through water year 2012: U.S. Geological Survey Scientific Investigations Report 2015–5133, 76 p., http://dx.doi.org/10.3133/sir20155133.

Publication Thumbnail
Year Published: 2016

Use of terrestrial field studies in the derivation of bioaccumulation potential of chemicals

Field-based studies are an essential component of research addressing the behavior of organic chemicals, and a unique line of evidence that can be used to assess bioaccumulation potential in chemical registration programs and aid in development of associated laboratory and modeling efforts. To aid scientific and regulatory discourse on the...

van den Brink, Nico W.; Arblaster, Jennifer A.; Bowman, Sarah R.; Conder, Jason M.; Elliott, John E.; Johnson, Mark S.; Muir, Derek C.G.; Natal-da-Luz, Tiago; Rattner, Barnett A.; Sample, Bradley E.; Shore, Richard F.
van den Brink, N. W., Arblaster, J. A., Bowman, S. R., Conder, J. M., Elliott, J. E., Johnson, M. S., Muir, D. C. G., Natal da Luz, T. M., Rattner, B. A., Sample, B., and Shore, R. F., 2016, Use of terrestrial field studies in the derivation of bioaccumulation potential of chemicals: Integrated Environmental Assessment and Management , v. 12, no. 1, p. 135-145.

Filter Total Items: 1,774
Close-up of a honey bee being prepared for testing

Close-up of a honey bee being prepared for testing

Leetown Science Center researcher, Dr. Deborah Iwanowicz, is preparing honey bee for analysis of the Lake Sinai Virus (LSV).   This type of work is important to society as pollinators are critical for sustaining healthy ecosystems and prosperous human populations.

Photograph of Head of the Meadow Beach shoreline

Head of the Meadow Beach video camera 2 variance image

Two video cameras are mounted on a bluff near Head of the Meadow Beach, Cape Cod National Seashore, North Truro, MA. One camera looks directly offshore (north east), and the second looks alongshore (north-northeast). A “variance” image shows the standard deviation of pixel intensity throughout the video, and it is useful for determining how much variation or movement is

...
view of boats, piers, and bridge on Reynolds Channel

Reynolds Channel at Point Lookout, NY

Latest webcam image of Reynolds Channel (01310740).

Image timestamp is in Eastern Standard Time.
Webcam is located on tower at USGS gaging station, looking west-northwest toward Loop Parkway Bridge.

Adult silver phase American Eel

Adult silver phase American Eel

A silver-phase American Eel in a northeastern river begins migrating downstream to the ocean to spawn in the Sargasso Sea. The migration can span hundreds of kilometers in freshwater rivers and thousands of kilometers at sea.

Photograph of Head of the Meadow Beach shoreline

Head of the Meadow Beach video camera 1 timex image

Two video cameras are mounted on a bluff near Head of the Meadow Beach, Cape Cod National Seashore, North Truro, MA. One camera looks directly offshore (north east), and the second looks alongshore (north-northeast). A timex is a time-averaged image of all frames, smoothing away surface waves and determining the location of persistent wave-breaking (indicative of shallow

...
Photograph of Head of the Meadow Beach shoreline

Head of the Meadow Beach video camera 2 timex image

Two video cameras are mounted on a bluff near Head of the Meadow Beach, Cape Cod National Seashore, North Truro, MA. One camera looks directly offshore (north east), and the second looks alongshore (north-northeast). A timex is a time-averaged image of all frames, smoothing away surface waves and determining the location of persistent wave-breaking (indicative of shallow

...