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.

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June Photo Contest

June Photo Contest

Check out the winning photographs in the June 2021 Photo Contest! Categories include People, USGS at Work, Where We Work, and Honorable Mention

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Regions L2 Landing Page Tabs

Filter Total Items: 16,100
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Year Published: 2016

A typology of time-scale mismatches and behavioral interventions to diagnose and solve conservation problems

Ecological systems often operate on time scales significantly longer or shorter than the time scales typical of human decision making, which causes substantial difficulty for conservation and management in socioecological systems. For example, invasive species may move faster than humans can diagnose problems and initiate solutions, and climate...

Wilson, Robyn S.; Hardisty, David J.; Epanchin-Niell, Rebecca S.; Runge, Michael C.; Cottingham, Kathryn L.; Urban, Dean L.; Maguire, Lynn A.; Hastings, Alan; Mumby, Peter J.; Peters, Debra P. C.

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Year Published: 2016

Analysis of brook trout spatial behavior during passage attempts in corrugated culverts using near-infrared illumination video imagery

We used video recording and near-infrared illumination to document the spatial behavior of brook trout of various sizes attempting to pass corrugated culverts under different hydraulic conditions. Semi-automated image analysis was used to digitize fish position at high temporal resolution inside the culvert, which allowed calculation of various...

Bergeron, Normand E.; Constantin, Pierre-Marc; Goerig, Elsa; Castro-Santos, Theodore R.

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Year Published: 2016

Density, distribution, and genetic structure of grizzly bears in the Cabinet-Yaak Ecosystem

The conservation status of the 2 threatened grizzly bear (Ursus arctos) populations in the Cabinet-Yaak Ecosystem (CYE) of northern Montana and Idaho had remained unchanged since designation in 1975; however, the current demographic status of these populations was uncertain. No rigorous data on population density and distribution or analysis of...

Macleod, Amy C.; Boyd, Kristina L.; Boulanger, John; Royle, J. Andrew; Kasworm, Wayne F.; Paetkau, David; Proctor, Michael F.; Annis, Kim; Graves, Tabitha A.

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Year Published: 2016

Erosional history of the Appalachians as recordeed in detrital zircon fission-track ages and lithic detritus in Atlantic Coastal Plain sediments

Comparison of fission-track (FT) ages of detrital zircons recovered from Atlantic Coastal Plain sediments to FT ages of zircons from bedrock in source terranes in the Appalachians provides a key to understanding the provenance of the sediments and, in turn, the erosional and depositional history of the Atlantic passive margin.In Appalachian source...

Naeser, C.W.; Naeser, N.D.; Edwards, Lucy E.; Weems, Robert E.; Southworth, C. Scott; Newell, Wayne L.

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Year Published: 2016

Estimating golden-cheeked warbler immigration: Implications for the spatial scale of conservation

Understanding the factors that drive population dynamics is fundamental to species conservation and management. Since the golden-cheeked warbler Setophaga chrysoparia was first listed as endangered, much effort has taken place to monitor warbler abundance, occupancy, reproduction and survival. Yet, despite being directly related to local...

Duarte, A.; Weckerly, F.W.; Schaub, M.; Hatfield, Jeffrey S.

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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.

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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

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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.

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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

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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

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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

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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.

Filter Total Items: 1,749
two USGS staffers working on hydroacoustic and turbidity equipment
March 12, 2002

Deploying hydroacoustic and turbidity equipment on the Hudson R

USGS staffers Dan Edwards and Gary Wall attach a hydroacoustic and turbidity equipment package to a tripod for deployment on the bottom of the Hudson River near Poughkeepsie, NY

photo of small stream of water through reservoir and some beached rowboats
November 14, 2001

Drought - Schoharie Reservoir 2001

Drought - Schoharie Reservoir 2001

small stream running through boulders in green forest
August 14, 2001

Stream in the Catskill Mountians, NY

first order stream in the Catskill Mountains

2 USGS scientists in inflatable boat on tidal marsh on Long Island
November 30, 2000

Water sampling in tidal marsh on Long Island

USGS scientists taking water samples in the tidal marsh on Long Island.

Groundwater sampling array Cape Cod Massachusetts
June 27, 2000

Groundwater sampling array

Groundwater sampling array at the Toxics Substances research site, Cape Cod, Massachusetts

photo of USGS staffer holding a groundwater sample bottle inside a plastic box
April 10, 2000

Groundwater sampling

Groundwater sampling on Long Island

photo of 3 women beside Long Island road measuring groundwater with instrumentation
March 1, 2000

Groundwater Sampling on Long Island

Groundwater sampling for water quality on Long Island, New York