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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March Photo Contest

March Photo Contest

Check out the winning photographs in the March 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: 1,148
Date published: February 28, 2018
Status: Active

Hydrogeologic-Framework Mapping - Long Island, New York

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Long Island is underlain by unconsolidated Holocene deposits, glacial deposits of Pleistocene age, and coastal-plain deposits  of Late Cretaceous age. These sediments consist of gravel, sand, silt, and clay underlain by...

Date published: February 28, 2018
Status: Active

Saltwater-Interface Mapping - Long Island, New York

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Saltwater intrusion is the most common type of water-quality degradation in coastal-plain aquifers. In coastal areas, the hydraulic head under predevelopment (nonpumping) conditions is higher on land than in the surrounding...

Date published: February 28, 2018
Status: Active

Warm Freshwater Ecosystems

These systems are characterized as 4th order and larger nontidal riverine systems, which includes many of the intermediate and larger size rivers, such as the Penobscot, Connecticut, Hudson, Delaware, and Susquehanna Rivers and their larger tributaries of the northeastern U.S.  Fish passage, thermal stress, and ecological flows are likely important issues in these systems.  Fish...

Date published: February 28, 2018
Status: Active

Disease and Environmental Stress

Disease may be caused by infectious agents, nutritional imbalances, physiological or genetically-based abnormalities, and suboptimal environmental conditions, acting either alone or in combination with other factors.  In many instances, environmental stressors may merge forces with an infectious agent or some other non-infectious factor to produce or exacerbate a state of disease.  By studying...

Date published: February 28, 2018
Status: Active

Freshwater Mussel Physiology

Freshwater mussels are considered ecosystems engineers benefiting the streams and rivers they inhabit through filtration, biodeposition, and nutrient cycling, thereby influencing water quality.  However, many of these species are rapidly declining due to shifting environmental conditions and habitat loss.  Researchers at Leetown Science Center are evaluating how different species of mussels...

Date published: February 27, 2018
Status: Active

USGS Ohio Water Microbiology Laboratory - Cyanobacteria and toxin gene molecular assays

Harmful cyanobacterial “algal” blooms and associated toxins are of concern in many parts of the world because of their effects on drinking water, water-based recreation, and watershed ecology. Cyanotoxins are a diverse group of compounds that include hepatotoxins, neurotoxins, cytotoxins, dermatotoxins, and irritant toxins (Wiegand and Pflugmacher, 2005). Numerous incidents of animal and human...

Contacts: Erin A Stelzer
Date published: February 27, 2018
Status: Active

Assessing Endangered Marsh Rabbit and Woodrat Habitat use and Predator Population Dynamics

 Feral and free-ranging domestic cats (Felis catus) have strong negative effects on wildlife, particularly in island ecosystems such as the Florida Keys. We deployed camera traps to study free-ranging cats in National Wildlife Refuges and state parks on Big Pine Key and Key Largo and used spatial models to estimate cat population dynamics and stable isotope analyses to examine cat diets. Top...

Date published: February 27, 2018
Status: Active

Using models to estimate microcystin concentrations in Ohio recreational and source waters

Cyanobacterial harmful algal blooms (cyanoHABs) and associated toxins, such as microcystin, are a major global water-quality issue.  In Lake Erie and inland lakes in Ohio, elevated microcystin concentrations have caused water-resource managers to issue recreational water-quality advisories, and detections of microcystin in source waters have caused drinking-water plant managers to increase...

Date published: February 26, 2018
Status: Active

Groundwater-Flow Modeling - Long Island, New York

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Numerical models provide a means to synthesize existing hydrogeologic information into an internally consistent mathematical representation of a real system or process, and thus are useful tools for testing and improving...

Date published: February 25, 2018
Status: Active

Groundwater Sustainability - Long Island, New York

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Groundwater sustainability can best be defined as the development and use of groundwater in a manner that can be maintained for an indefinite time without causing unacceptable environmental or socioeconomic consequences. Informed...

Date published: February 21, 2018
Status: Completed

Genomic and Behavioral Effects of the Neonicotinoid Imidacloprid in Birds Exposed Through Pesticide-Coated Seeds

The Challenge: Neonicotinoid pesticides act as agonists of nicotinic acetylcholine receptors (nAChRs) and are designed to be lethal to insects while theoretically posing little to no threat to vertebrates. The perceived safety of neonicotinoids has led to a sharp increase in their use in the United States and globally, since they were first introduced in 1994. The use of the neonicotinoid...

Date published: February 21, 2018
Status: Active

New Jersey Ambient Groundwater-Quality Monitoring Network

The USGS, in cooperation with the New Jersey Department of Environmental Protection, New Jersey Geological and Water Survey, Ambient Groundwater-Quality Monitoring Net­work (AGWQMN), which is designed to characterize the status of groundwater quality at or near the water table as a function of land use. Shallow groundwater is generally the first and most significantly affected...

Contacts: Heidi L Hoppe
Filter Total Items: 15,993
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Year Published: 2019

Submarine permafrost map in the arctic modelled using 1D transient heat flux (SuPerMAP)

Offshore permafrost plays a role in the global climate system, but observations of permafrost thickness, state, and composition are limited to specific regions. The current global permafrost map shows potential offshore permafrost distribution based on bathymetry and global sea level rise. As a first‐order estimate, we employ a heat transfer model...

Overduin, P.P.; Schneider von Deimling, T.; Miesner, F.; Grigoriev, M.N.; Ruppel, Carolyn D.; Vasiliev, A.; Lantuit, H.; Juhls, B.; Westermann, S.

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Year Published: 2019

Long-term population dynamics of dreissenid mussels (Dreissena polymorpha and D. rostriformis): A cross-system analysis

Dreissenid mussels (including the zebra mussel Dreissena polymorpha and the quagga mussel D. rostriformis) are among the world's most notorious invasive species, with large and widespread ecological and economic effects. However, their long‐term population dynamics are poorly known, even though these dynamics are critical to...

Strayer, David L.; Adamovich, Boris V.; Rita Adrian; Aldridge, David C.; Csilla Balogh; Lyubov E. Burlakova; Hannah Fried-Petersen; László G.-Tóth; Amy L. Hetherington; Thomas S. Jones; Alexander Y. Karatayev; Jacqueline B. Madill; Oleg A. Makarevich; Marsden, J. Ellen; André L. Martel; Dan Minchin; Thomas F. Nalepa; Ruurd Noordhuis; Timothy J. Robinson; Lars G. Rudstam; Astrid N. Schwalb; Smith, David R.; Alan D. Steinman; Jonathan M. Jeschke

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Year Published: 2019

Understanding and mitigating bee drownings in open feeders

Whereas open feeders are relatively inexpensive and are easily set up and maintained, they do present a drowning hazard to bees. We observed that bees feeding off the walls of the open container fell into the sugar water because of their incarnation, interactions with other bees and when shooed off the feeder walls while removing the feeder for...

Vyas, Nimish B.; Plunkett, Amanda D.; Enciso, Evelynn; Torrez, Victor

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Year Published: 2019

North-facing slopes and elevation shape asymmetric genetic structure in the range-restricted salamander Plethodon shenandoah

Species with narrow environmental preferences are often distributed across fragmented patches of suitable habitat, and dispersal among subpopulations can be difficult to directly observe. Genetic data collected at population centers can help quantify gene flow, which is especially important for vulnerable species with a disjunct range. Plethodon...

Mulder, KP; Cortes-Rodriguez, Nandadevi; Brand, Adrianne B.; Campbell Grant, Evan H.; Fleischer, Robert C.

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Year Published: 2019

Eastern Carpenter Bee (Hymenoptera: Apidae): Nest structure, nest cell provisions, and trap nest acceptance in Rhode Island

Analysis of pollen provisions in Xylocopa virginica (L.) nests in southern Rhode Island showed that this species produced pollen loaves from 21 different genera of plants in 2016, 19 in 2017, and 39 in 2018. Antirrhinium majus L. (garden snapdragon) pollen was the most common type collected in all three years (21.4%). Overall,...

Tucker, Sara K; Ginsberg, Howard S.; Alm, Steven R.

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Year Published: 2019

Hurricane Sandy impacts on coastal wetland resilience

The goal of this research was to evaluate the impacts of Hurricane Sandy on surface elevation trends in estuarine marshes located across the northeast region of the United States from Virginia to Maine using data from an opportunistic (in other words, not strategic) and collaborative network (from here on, an opportunistic network) of surface...

Cahoon, Donald R.; Olker, Jennifer H.; Yeates, Alice G.; Guntenspergen, Glenn R.; Grace, James B.; Adamowicz, Susan C.; Anisfeld, Shimon C.; Baldwin, Andrew H.; Barrett, Nels; Beckett, Leah; Benzecry, Alice; Blum, Linda K.; Burdick, David M.; Crouch, William; Ekberg, Marci Cole; Fernald, Sarah; Grimes, Kristin Wilson; Grzyb, Joseph; Hartig, Ellen Kracauer; Kreeger, Danielle A.; Larson, Marit; Lerberg, Scott; Lynch, James C.; Maher, Nicole; Maxwell-Doyle, Martha; Mitchell, Laura R.; Mora, Jordan; O'Neill, Victoria; Padeletti, Angela; Prosser, Diann J.; Quirk, Tracy; Raposa, Kenneth B.; Reay, William G.; Siok, Drexel; Snow, Christopher; Starke, Adam; Stevenson, J. Court; Staver, Lorie; Turner, Vincent
Cahoon, D.R., Olker, J.H., Yeates, A.G., Guntenspergen, G.R., Grace, J.B., Adamowicz, S.C., Anisfeld, S., Baldwin, A.H., Barrett, N., Beckett, L., Benzecry, A., Blum, L.K., Burdick, D.M., Crouch, W., Ekberg, M.C., Fernald, S., Grimes, K.W., Grzyb, J., Hartig, E.K., Kreeger, D.A., Larson, M., Lerberg, S., Lynch, J.C., Maher, N., Maxwell-Doyle, M., Mitchell, L.R., Mora, J., O’Neill, V., Padeletti, A., Prosser, D., Quirk, T., Raposa, K.B., Reay, W.G., Siok, D., Snow, C., Starke, A., Staver, L., Stevenson, J.C., and Turner, V., 2019, Hurricane Sandy impacts on coastal wetland resilience: U.S. Geological Survey Open-File Report 2018–1142, 117 p., https://doi.org/10.3133/ofr20181142.

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Year Published: 2019

Annual survival, site fidelity, and longevity in the eastern coastal population of the Painted Bunting (Passerina ciris) based on a 20-year mark-recapture/resighting study

A long-term study of annual survival, longevity, and site fidelity in the eastern coastal population of the Painted Bunting (Passerina ciris) during the breeding season was conducted from 1999 through 2018 in the outer coastal plain of the southeastern Atlantic coast of the United States. Painted Buntings were uniquely color-banded from 1999...

Sykes, Paul W. Jr; Freeman, Mary; Sykes, Joan J.; Seginak, John T.; M. David Oleyar; Egan, Joshua P.

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Year Published: 2019

The complex spatial distribution of trichloroethene and the probability of NAPL occurrence in the rock matrix of a mudstone aquifer

Methanol extractions for chloroethene analyses are conducted on rock samples from seven closely spaced coreholes in a mudstone aquifer that was subject to releases of the nonaqueous phase liquid (NAPL) form of trichloroethene (TCE) between the 1950's and 1990's. Although TCE concentration in the...

Shapiro, Allen M.; Goode, Daniel J.; Imbrigiotta, Thomas; Lorah, Michelle M.; Tiedeman, Claire

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Year Published: 2019

Revisiting the avian Eco-SSL for lead: Recommendations for revision

The avian ecological soil screening level (Eco-SSL) for lead (11 mg/kg) is within soil background concentrations for >90% of the US. Consequently, its utility as a soil screening level is limited. Site-specific ecological risk-based remedial goals for lead are frequently many times greater. Toxicity reference values (TRVs) play a major role in...

Sample, Bradley; Beyer, W. Nelson; Wentsel, Randall

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Year Published: 2019

Future directions to escalate benefits of stepping-stone approach for conservation translocations

Through a reintroduction case study on the critically endangered Vancouver Island marmot (Marmota vancouverensis), we introduced a ‘stepping-stone’ approach which utilizes the transition of released individuals among populations to maximize demographic growth potential (Lloyd et al. 2019). We greatly appreciate and hereby reflect on the...

Lloyd, N.A.; Hostetter, N.J.; Jackson, C.L.; Converse, Sarah J.; Moehrenschlager, A.

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Year Published: 2019

Coelomic disorders of fishes

Dropsy is a commonly applied term for coelomic distention due to ascites, or the effusion and collection of fluid freely throughout the coelomic cavity. Dropsy, or ascites, is generally a sign of another ongoing disease process, oftentimes one that is multisystemic and impacting coelomic organs and tissues. Dropsy may be caused by a variety of...

Densmore, Christine L.

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Year Published: 2019

The Value of Data – The Qatar Geologic Mapping Project

The State of Qatar is in a period of rapid development, modernization, and population growth. One of the most important factors influencing the long-term success and sustainability of future development is a comprehensive understanding of the region’s geologic regime, geotechnical conditions, natural resources, and environmental constraints. To...

Krupansky, Joseph T.; Knight, Michael A.; Orndorff, Randall; Al-Akhras, Khaled M.; Mouradian, Ara G.; Saleh, Ali F.
Krupansky, J.T., Knight, M.A., Orndorff, R.C., Al-Akhras, K.M., Mouradian, A.G., and Sahel, A.F., 2019, The value of data – The Qatar Geologic Mapping Project, in, Meehan, C.L., Kumar, S., Pando, M.A., and Coe, J.T., eds., Data, software, education, and a tribute to Ralph Peck: American Society of Civil Engineers, Geotechnical Special Publication 314 – Geo-Congress 2019, p. 12-23.

Filter Total Items: 1,718
Scientists are collecting core samples from the Great Dismal Swamp in Virginia
May 8, 2018

Great Dismal Swamp

Scientists are collecting core samples from the Great Dismal Swamp in Virginia to understand natural conditions before centuries of ditching, draining and harvesting. This is a collaborative project between the USGS and the Great Dismal Swamp National Wildlife Refuge. This project will help managers understand how this system has changed in order to better manage and

...
Photograph of the Great Dismal Swamp in Virginia
May 8, 2018

The Great Dismal Swamp

Photograph of the Great Dismal Swamp in Virginia.

Photograph of the Great Dismal Swamp in Virginia
May 8, 2018

The Great Dismal Swamp

Photograph of the Great Dismal Swamp in Virginia.

Photograph of the Great Dismal Swamp in Virginia
May 8, 2018

The Great Dismal Swamp

Photograph of the Great Dismal Swamp in Virginia.

Scientists are collecting core samples from the Great Dismal Swamp in Virginia
May 8, 2018

Great Dismal Swamp

Scientists are collecting core samples from the Great Dismal Swamp in Virginia to understand natural conditions before centuries of ditching, draining and harvesting. This is a collaborative project between the USGS and the Great Dismal Swamp National Wildlife Refuge. This project will help managers understand how this system has changed in order to better manage and

...
Scientists are collecting core samples from the Great Dismal Swamp in Virginia
May 8, 2018

Great Dismal Swamp

Scientists are collecting core samples from the Great Dismal Swamp in Virginia to understand natural conditions before centuries of ditching, draining and harvesting. This is a collaborative project between the USGS and the Great Dismal Swamp National Wildlife Refuge. This project will help managers understand how this system has changed in order to better manage and

...
Scientists are collecting core samples from the Great Dismal Swamp in Virginia
May 8, 2018

Great Dismal Swamp

Scientists are collecting core samples from the Great Dismal Swamp in Virginia to understand natural conditions before centuries of ditching, draining and harvesting. This is a collaborative project between the USGS and the Great Dismal Swamp National Wildlife Refuge. This project will help managers understand how this system has changed in order to better manage and

...
Scientists are collecting core samples from the Great Dismal Swamp in Virginia
May 8, 2018

Great Dismal Swamp

Scientists are collecting core samples from the Great Dismal Swamp in Virginia to understand natural conditions before centuries of ditching, draining and harvesting. This is a collaborative project between the USGS and the Great Dismal Swamp National Wildlife Refuge. This project will help managers understand how this system has changed in order to better manage and

...
Scientists are collecting core samples from the Great Dismal Swamp in Virginia
May 8, 2018

Great Dismal Swamp

Scientists are collecting core samples from the Great Dismal Swamp in Virginia to understand natural conditions before centuries of ditching, draining and harvesting. This is a collaborative project between the USGS and the Great Dismal Swamp National Wildlife Refuge. This project will help managers understand how this system has changed in order to better manage and

...
Scientists are collecting core samples from the Great Dismal Swamp in Virginia
May 8, 2018

Great Dismal Swamp

Scientists are collecting core samples from the Great Dismal Swamp in Virginia to understand natural conditions before centuries of ditching, draining and harvesting. This is a collaborative project between the USGS and the Great Dismal Swamp National Wildlife Refuge. This project will help managers understand how this system has changed in order to better manage and

...
Scientists are collecting core samples from the Great Dismal Swamp in Virginia
May 8, 2018

Great Dismal Swamp

Scientists are collecting core samples from the Great Dismal Swamp in Virginia to understand natural conditions before centuries of ditching, draining and harvesting. This is a collaborative project between the USGS and the Great Dismal Swamp National Wildlife Refuge. This project will help managers understand how this system has changed in order to better manage and

...
An image of USGS research drilling rig on side of U.S. Route 90 in Kinney County, Texas.  The sky is streaked with clouds.
May 8, 2018

Going for the Eagle Ford Shale Formation, Kinney County, Texas

One charge of the U.S. Geological Survey’s Energy Resources Science Center is performing description
and analysis of hydrocarbon source rocks as input to USGS oil and gas assessments. This 2018 image
shows a coring and geophysical well-logging operation adjacent to U.S. Route 90, Kinney County, Texas.
The borehole yielded a 500’ rock core containing Austin

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Filter Total Items: 590