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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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.

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Regions L2 Landing Page Tabs

Filter Total Items: 16,168
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Year Published: 2016

Predicting the occurrence of cave-inhabiting fauna based on features of the earth surface environment

One of the most challenging fauna to study in situ is the obligate cave fauna because of the difficulty of sampling. Cave-limited species display patchy and restricted distributions, but it is often unclear whether the observed distribution is a sampling artifact or a true restriction in range. Further, the drivers of the distribution could be...

Christman, Mary C.; Doctor, Daniel H.; Niemiller, Matthew L.; Weary, David J.; Young, John A.; Zigler, Kirk S.; Culver, David C.

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Year Published: 2016

Bedrock geologic map of the Hartland and North Hartland quadrangles, Windsor County, Vermont, and Sullivan and Grafton Counties, New Hampshire

The bedrock geology of the 7.5-minute Hartland and North Hartland quadrangles, Vermont-New Hampshire, consists of highly deformed and metamorphosed lower Paleozoic metasedimentary, metavolcanic, and metaplutonic rocks of the Bronson Hill anticlinorium (BHA) and the Connecticut Valley trough (CVT). Rocks of the Orfordville anticlinorium on this map...

Walsh, Gregory
Walsh, G.J., 2016, Bedrock geologic map of the Hartland and North Hartland quadrangles, Windsor County, Vermont, and Sullivan and Grafton Counties, New Hampshire: U.S. Geological Survey Scientific Investigations Map 3361, 2 sheets, scale 1:24,000, https://doi.org/10.3133/sim3361.

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Year Published: 2016

United States Biological Survey: A compendium of its history, personalities, impacts, and conflicts

In 1885, a small three-person unit was created in the U.S. Department of Agriculture to gather and analyze information on bird migrations. Originally called the Section of Economic Ornithology, over the next 55 years this unit underwent three name changes and accumulated ever-increasing responsibilities for the nation’s faunal resources....

Schmidly, David J.; Tydeman, W. E.; Gardner, Alfred L.
Schmidly, D. J., Tydeman, W. E., and Gardner, A. L., 2016, United States Biological Survey: A compendium of its history, personalities, impacts, and conflicts: Lubbock, TX, Museum of Texas Tech University. Special Publications 64, 123 p.

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Year Published: 2016

Keeping things local: Subpopulation Nb and Ne in a stream network with partial barriers to fish migration

For organisms with overlapping generations that occur in metapopulations, uncertainty remains regarding the spatiotemporal scale of inference of estimates of the effective number of breeders () and whether these estimates can be used to predict generational Ne. We conducted a series of tests of the spatiotemporal scale of inference of...

Whiteley, AR; Coombs, JA; O'Donnell, Matthew; Nislow, KH; Letcher, Benjamin

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Year Published: 2016

Retrospective: Adjusting contaminant concentrations in bird eggs to account for moisture and lipid Loss during their incubation

By the 1960s, research and monitoring efforts on chlorinated pesticide residues in tissues of wildlife were well underway in North America and Europe. Conservationists and natural resource managers were attempting to resolve whether pesticide exposure and accumulated residues were related to population declines in several species of predatory and...

Rattner, Barnett A.; Wiemeyer, Stanley N.; Blus, Lawrence J.
Rattner, B. A., Wiemeyer, S. N., and Blus, L. J., 2016, Retrospective: Adjusting contaminant concentrations in bird eggs to account for moisture and lipid Loss during their incubation: Archives of Environmental Contamination and Toxicology, v. 97, no. 1, p. 2-3.

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Year Published: 2016

A review and synthesis of recreation ecology research findings on visitor impacts to wilderness and protected natural areas

The 50th anniversary of the US Wilderness Act of 1964 presents a worthy opportunity to review our collective knowledge on how recreation visitation affects wilderness and protected natural area resources. Studies of recreation impacts, examined within the recreation ecology field of study, have spanned 80 years and generated more than 1,...

Marion, Jeffrey L.; Leung, Yu-Fai; Eagleston, Holly; Burroughs, Kaitlin
Marion, J. L., Leung, Y.-F, Eagleston, H., and Burroughs, K., 2016, A review and synthesis of recreation ecology research findings on visitor impacts to wilderness and protected natural areas: Journal of Forestry, v. 114, no. 3, p. 352-362.

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Year Published: 2016

A review and synthesis of recreation ecology research supporting carrying capacity and visitor use management decisionmaking

Resource and experiential impacts associated with visitation to wilderness and other similar backcountry settings have long been addressed by land managers under the context of “carrying capacity” decisionmaking. Determining a maximum level of allowable use, below which high-quality resource and experiential conditions would be...

Marion, Jeffrey L.
Marion, J. L., 2016, A review and synthesis of recreation ecology research supporting carrying capacity and visitor use management decisionmaking: Journal of Forestry, v. 114, no. 3, p. 339-351.

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Year Published: 2016

Analysis of hydrologic and geochemical time-series data at James Cave, Virginia: Implications for epikarst influence on recharge in Appalachian karst aquifers

The epikarst, which consists of highly weathered rock in the upper vadose zone of exposed karst systems, plays a critical role in determining the hydrologic and geochemical characteristics of recharge to an underlying karst aquifer. This study utilized time series (2007–2014) of hydrologic and geochemical data of drip water collected within...

Eagle, Sarah D.; Orndorff, William; Schwartz, Benjamin F.; Doctor, Daniel H.; Gerst, Jonathan D.; Schreiber, Madeline E.
Eagle, S., W. Orndorff, B. Schwartz, D. H. Doctor, J. Gerst, and M. Schreiber (2015) Analysis of hydrologic and geochemical time-series data at James Cave, Virginia: Implications for epikarst influence on recharge in Appalachian karst aquifers, in J. Feinberg, Y. Gao, and E. C. Alexander, Jr., eds., Caves and Karst Across Time: Geological Society of America Special Papers, 516, p. 181-196, first published on August 6, 2015, doi:10.1130/2015.2516(15)

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Year Published: 2016

Cross-seasonal effects on waterfowl productivity: Implications under climate change

Previous efforts to relate winter-ground precipitation to subsequent reproductive success as measured by the ratio of juveniles to adults in the autumn failed to account for increased vulnerability of juvenile ducks to hunting and uncertainty in the estimated age ratio. Neglecting increased juvenile vulnerability will positively bias the mean...

Osnas, Erik; Zhao, Qing; Runge, Michael C.; Boomer, G Scott

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Year Published: 2016

Adaptive management for improving species conservation across the captive-wild spectrum

Conservation of endangered species increasingly envisages complex strategies that integrate captive and wild management actions. Management decisions in this context must be made in the face of uncertainty, often with limited capacity to collect information. Adaptive management (AM) combines management and monitoring, with the aim of updating...

Canessa, Stefano; Guillera-Arroita, Gurutzeta; Lahoz-Monfort, José J.; Southwell, Darren M; Armstrong, Doug P.; Chadès, Iadine; Lacy, Robert C; Converse, Sarah J.
Canessa, S., Guillera-Arroita, G., Lahoz-Monfort, J. J., Southwell, D. M., Armstrong, D. P., Chadès, I., Lacy, R. C., and Converse, S. J., 2016, Adaptive management for improving species conservation across the captive-wild spectrum: Biological Conservation, v. 199, p. 123-131.

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Year Published: 2016

Novel cell-based assay for detection of thyroid receptor beta-interacting environmental contaminants

Even though the presence of endocrine disrupting chemicals (EDCs) with thyroid hormone (TH)-like activities in the environment is a major health concern, the methods for their efficient detection and monitoring are still limited. Here we describe a novel cell assay, based on the translocation of a green fluorescent protein (GFP)—tagged chimeric...

Stavreva, Diana A.; Varticovski, Lyuba; Levkova, Ludmila; George, Anuja A.; Davis, Luke; Pegoraro, Gianluca; Blazer, Vicki S.; Iwanowicz, Luke R. ; Hager, Gordon L.
Stavreva DA, Varticovski L, Levkova L, George AA, Davis L, Pegoraro G, Blazer V, Iwanowicz L, Hager GL. 2016. Novel cell-based assay for detection of thyroid receptor beta-interacting environmental contaminants. Toxicology. 368-369: 69-79.

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Year Published: 2016

The road to NHDPlus — Advancements in digital stream networks and associated catchments

A progression of advancements in Geographic Information Systems techniques for hydrologic network and associated catchment delineation has led to the production of the National Hydrography Dataset Plus (NHDPlus). NHDPlus is a digital stream network for hydrologic modeling with catchments and a suite of related geospatial data. Digital stream...

Moore, Richard B.; Dewald, Thomas A.
Moore, Richard B. and Dewald, Thomas G., 2016 The Road to NHDPlus — Advancements in Digital Stream Networks and Associated Catchments, Journal of the American Water Resources Association, v. 52, no. 4, 890-900, http://dx.doi.org/10.1111/1752-1688.12389

Filter Total Items: 1,772
Comparison of observed near-bed velocities and modeled near-bed velocities using several bottom-roughness formulations.
December 31, 2010

Comparison of observed near-bed velocities and modeled near-bed veloci

Comparison of observed near-bed velocities and modeled near-bed velocities using several bottom-roughness formulations. Velocity vectors are overlaid on map of backscatter from the sea floor showing regions with coarse sand (light color) and fine sand (dark colors). White lines are bathymetry contours. Mean velocities were averaged over entire period (top panel), flood and

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Noxious Algal Bloom in an estuary along the Massachusetts coast
December 31, 2010

Noxious Algal Bloom in an estuary along the Massachusetts coast

Noxious Algal Bloom in an estuary along the Massachusetts coast. Photo from the USGS circular 1360 "Water Quality in Pricipal Aquifers of the United States, 1991-2010."

Simulation model for geomorphic change
December 31, 2010

Simulation Model

Simulation results for geomorphic change in Suisun Bay, CA (Ganju and Schoellhamer, 2010)

Topographic and bathymetric map of the island of Hispaniola.
December 31, 2010

Topographic and bathymetric map of the island of Hispaniola.

Map of the island of Hispaniola that include the countries of Haiti and the Dominican Republic. Fault traces are shown as lines with the following descriptions: barbed=thrust fault; solid=strike-slip fault with arrows showing relative direction of motion; black and white=normal fault. The arrow at the top right corner shows the direction of the North American plate motion

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man kneeling on grass looking at a laptop display next to a groundwater well
October 22, 2010

Groundwater measurement at Richmond well R-126 Long Island, NY

Groundwater measurement at Richmond well R-126 Long Island, NY

Image of Cypress trees during the dry season
October 20, 2010

Cypress Bridge Preserve, October 2010

Scientists took a trip to Cypress Bridge Preserve during the "dry" season to collect sediment cores for further analysis.

R/V Rafael
September 14, 2010

R/V Rafael

The R/V Rafael performs nearshore geophysical surveys, and includes high resolution sub-bottom profiling, sidescan sonar, and multibeam echosounding in its arsenal of survey capabilities. The R/V Rafael can cruise at 30 knots fully loaded, so day surveys in large lakes, bays, or rivers, and near-shore ocean environments that require long transits can be cost effective.

Licking River at Highway 536 near Alexandria, Kentucky water-quality install
August 11, 2010

Licking River at Highway 536 near Alexandria, Kentucky

Licking River at Highway 536 near Alexandria, Kentucky water-quality equipment install.