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 5, 2018
Status: Active

Fish Passage Hydraulic Flume

Many existing upstream and downstream fish passage structure designs (fishways, culverts, screens, downstream bypasses, etc.) function poorly or only for a narrow range of species or environmental conditions. Agencies currently seek improved or new designs that pass a broader range of species with increased efficiency and reliability, under a wider range of hydraulic operating conditions, and...

Date published: February 5, 2018
Status: Active

Fish Biomechanics

Biomechanics is the study of mechanical laws relating to the movement of living organisms. In regards to fish, biomechanics pertains to the body shape of different species and the various structures of fish muscles, fins, etc. The biomechanics of a fish impact its swimming performance which in turn affects its ability to surpass barriers to movement. Understanding the biomechanical drivers of...

Date published: February 2, 2018
Status: Active

NE ARMI Research Team

Current and past members of the Northeast Amphibian Research and Monitoring Initiative

Date published: February 2, 2018
Status: Active

Effects of Network Structure on Stream Salamanders

The role of stream network structure in driving salamander population dynamics needs more attention.  Although several studies have examined the effects of stream habitat and interspecific interactions on salamander populations, the role of the spatial structure of stream networks in mediating population processes for stream salamanders is poorly understood.  However, the role of stream...

Date published: February 2, 2018
Status: Active

Managing Habitat for Amphibians

Monitoring programs worldwide focus on estimation of trends in populations, often with an implicit expectation that identification of a trend will result in smart decisions as to how to respond (via management).  Though many researchers investigating the patterns and causes of amphibian declines have focused on estimation and detection of population trends, we take a different approach.  We...

Date published: February 2, 2018
Status: Active

Morphological variation of Plethodon shenandoah and Plethodon cinereus in high-elevation areas of Shenandoah National Park

In order for resource managers at Shenandoah National Park to implement long-term monitoring for the federally-endangered Shenandoah salamander, Plethodon shenandoah, absolute certain identification of the species in the field is critical.

Date published: February 2, 2018
Status: Active

Stream salamanders in Shenandoah National Park: Movement and survival of stream salamander populations

Research in population biology is concerned with factors affecting the change in a population over time, including births, deaths, immigration and emigration. Despite the potential importance of immigration and emigration, empirical data on movement patterns are lacking in many systems.

Date published: February 2, 2018
Status: Active

Monitoring the Shenandoah salamander in Shenandoah National Park

The Shenandoah salamander (Plethodon shenandoah) is a federally endangered species found only within the boundaries of Shenandoah National Park, Virginia.  This terrestrial salamander is isolated to approximately 6 km² of dry talus slopes at high elevations in the park.  Results of previous research suggest that P. shenandoah is competitively excluded to suboptimal talus...

Date published: February 2, 2018
Status: Active

Elucidating mechanisms underlying amphibian declines in North America using hierarchical spatial models

The Powell Center facilitates the implementation of new and innovative processes to increase scientific understanding aimed at resolving significant and complex issues, as outlined in the USGS Science Strategy. A hallmark of the Powell Center is that it is “a scientist-driven institution where leveraging existing research efforts produces...

Date published: February 2, 2018
Status: Active

Amphibian monitoring in the National Capital Region

The National Capital Region Network has identified amphibians as a priority taxonomic group for its Inventory and Monitoring program. Amphibian monitoring was initiated in 2005, and is currently concentrated in Chesapeake and Ohio Canal National Historic Park (CHOH) and Rock Creek Park (ROCR), with stream sampling also occurring in Prince William Forest Park (PRWI).

Date published: February 2, 2018
Status: Active

Monitoring Vernal Pool Amphibians in the Northeast

In 2004, the Northeast Amphibian Research Monitoring Initiative (NE ARMI) received funding from the National Park Service’s Park Oriented Biological Support, and combined these monies with ARMI funds to initiate a region-wide study on the distribution of vernal pools and estimate the proportion of pools that were occupied by pool-associated amphibians (specifically, wood frogs, Lithobates...

Date published: February 2, 2018
Status: Completed

Making Decisions for Headwater Stream Conservation at the Watershed Scale

There is growing evidence that headwater stream ecosystems are especially vulnerable to changing climate and land use, but their conservation is challenged by the need to address the threats at a landscape scale, often through coordination with multiple management agencies and landowners.

Filter Total Items: 15,993
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Year Published: 2019

Earth history and the passerine superradiation

Avian diversification has been influenced by global climate change, plate tectonic movements, and mass extinction events. However, the impact of these factors on the diversification of the hyperdiverse perching birds (passerines) is unclear because family level relationships are unresolved and the timing of splitting events among lineages is...

Oliveros, Carl H; Field, Daniel J; Ksepka, Daniel T; Barker, F Keith; Aleixo, Alexandre; Andersen, Michael J; Alstrom, Per; Benz, Brett W; Braun, Edward L; Braun, Michael J; Bravo, Gustavo A; Brumfield, Robb T; Chesser, Terry; Santiago Claramunt; Joel Cracraft; Andrés M. Cuervo; Elizabeth P. Derryberry; Travis C. Glenn; Michael G. Harvey; Peter A. Hosner; Leo Joseph; Rebecca Kimball; Andrew L. Mack; Colin M. Miskelly; A. Townsend Peterson; Mark B. Robbins; Frederick H. Sheldon; Luís Fábio Silveira; Brian T. Smith; Noor D. White; Robert G. Moyle; Brant C. Faircloth
Oliveros, C. H., Field, D. J., Ksepka, D. T., Barker, F. K., Aleixo, A., Andersen, M. J., Alström, P., Benz, B. W., Braun, E. L., Braun, M. J., Bravo, G. A., Brumfield, R. T., Chesser, R. T., Claramunt, S., Cracraft, J., Cuervo, A. M., Derryberry, E. P., Glenn, T. C., Harvey, M. G., Hosner, P. A., Joseph, L., Kimball, R. T., Mack, A. L., Miskelly, C. M., Peterson, A. T., Robbins, M. B., Sheldon, F. H., Silveira, L. F., Smith, B. T., White, N. D., Moyle, R. G., and Faircloth, B. C., 2019, Earth history and the passerine superradiation: Proceedings of the National Academy of Sciences of the USA, v. 116, no. 16, p. 7916-7925. https://doi.org/10.1073/pnas.1813206116

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Year Published: 2019

Simulating the effects of climate variability on waterbodies and wetland-dependent birds in the Prairie Pothole Region

Understanding how bird populations respond to changes in waterbody availability in the climatically variable Prairie Pothole Region (PPR) of North America hinges on being able to couple hydrological and climate modeling to represent potential future landscapes. Model experiments run with the Pothole Complex Hydrologic Model using downscaled...

Mcintyre, N.E.; Liu, G.; Gorzo, J.; Wright, C.K.; Guntenspergen, Glenn R.; Schwartz, F.

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Year Published: 2019

Geology of the Mineral and Lake Anna West Quadrangles, Virginia

This map product is a cooperator series publication and, as such, does not have a specific abstract. Geologic mapping for this map product was completed between 2014 and 2017, with most of the field work occurring between January 2016 and May 2017. Numerous foot traverses were completed along creeks and roads throughout the field area; the shore...

Carter, Mark W.; Burton, William C.; McAleer, Ryan J.; DiGiacomo-Cohen, Mary; Sauer, R. Tyler

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Year Published: 2019

Windows to the deep 2018: Exploration of the southeast US Continental margin

Windows to the Deep 2018: Exploration of the Southeast US Continental Margin was a 36-day expedition aboard NOAA Ship Okeanos Explorer to acquire data on priority exploration areas identified by the ocean management and scientific communities. This expedition involved high-resolution multibeam sonar mapping and ROV dives, ranging from 340 m to 3,...

Sautter, Leslie R; Morrison, Cheryl L.; Cantwell, Kasey; Sowers, Derek; Lobecker, Elizabeth

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Year Published: 2019

Syn-collisional exhumation of hot middle crust in the Adirondack Mountains (New York, USA): Implications for extensional orogenesis in the southern Grenville province

Extensional deformation in the lower to middle continental crust is increasingly recognized and shown to have significant impact on crustal architecture, magma emplacement, fluid flow, and ore deposits. Application of the concept of extensional strain to ancient orogenic systems, like the Grenville province of eastern North America, has helped...

Regan, Sean; Walsh, Gregory; Williams, Michael L.; Chiarenzelli, Jeffrey R.; Toft, Megan E.; McAleer, Ryan J.

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Year Published: 2019

Geology and biostratigraphy of the Upper Floridan aquifer in the greater Savannah region, Georgia and South Carolina

The Upper Floridan aquifer (UFA) of South Carolina, Georgia, Alabama, Mississippi, and Florida has been considered a regionally continuous stratigraphic sequence of Eocene to Miocene carbonate strata, with documented unconformities based on lithology and biostratigraphy.  As part of an investigation of the regional subsurface geologic...

Self-Trail, Jean M.; Parker, Mercer; Haynes, John T.; Schultz, Arthur P.; Huddleston, Paul. F.

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Year Published: 2019

Emerging investigator series: Atmospheric cycling of indium in the northeastern United States

Indium is critical to the global economy and is used in an increasing number of electronics and new energy technologies. However, little is known about its environmental behavior or impacts, including its concentrations or cycling in the atmosphere. This study determined indium concentrations in air particulate matter at five locations across the...

White, Sarah Jane; Hemond, Harold F.

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Year Published: 2019

Establishing molecular methods to quantitatively profile gastric diet items of fish—Application to the invasive blue catfish (ictalurus furcatus)

Understanding the diet of invasive species helps researchers to more accurately assess the health, survivorship, growth, and stability of an invasive fish species, as well as their effects on native populations. Techniques capable of identifying multiple prey species from fish stomach contents have been developed. In this study, a multi-locus...

Iwanowicz, Deborah D.; Schill, W. Bane; Sanders, Lakyn R.; Tim Groves; Groves, Mary C.
Iwanowicz, D.D., Schill, W.B., Sanders, L.R., Groves, T., and Groves, M.C., 2019, Establishing molecular methods to quantitatively profile gastric diet items of fish—Application to the invasive blue catfish (Ictalurus furcatus): U.S. Geological Survey Open-File Report 2019–1021, 15 p., https://doi.org/10.3133/ofr20191021.

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Year Published: 2019

Mid-latitude net precipitation decreased with Arctic warming during the Holocene

The latitudinal temperature gradient between the Equator and the poles influences atmospheric stability, the strength of the jet stream and extratropical cyclones. Recent global warming is weakening the annual surface gradient in the Northern Hemisphere by preferentially warming the high latitudes; however, the implications of these changes for...

Cody Routson; Nicholas McKay; Kaufman, Darrell; Hugues Goosse; Bryan Shuman; Rodysill, Jessica; Toby Ault

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Year Published: 2019

Confronting uncertainty: Contributions of the wildlife profession to the broader scientific community

Most wildlife professionals are engaged in 1 or both of 2 basic endeavors: science and management. These endeavors are a focus of many other disciplines, leading to widespread sharing of general methodologies. Wildlife professionals have appropriately borrowed and assimilated many methods developed primarily in other disciplines but have also led...

Nichols, James D.

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Year Published: 2019

Scale‐dependent effects of isolation on seasonal patch colonisation by two Neotropical freshwater fishes

The metapopulation paradigm has been central to improve the conservation and management of natural populations. However, despite the large number of studies on metapopulation dynamics, the overall support for the relationships on which the paradigm is based has not been strong. Here, we studied the occupancy dynamics of two Neotropical fishes (i.e...

Penha, Jerry; Hakamada, Karlo Y. P.; Hines, James E.; Nichols, James D.

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Year Published: 2019

State-space analysis of power to detect regional brook trout population trends over time

Threats to aquatic biodiversity are expressed at broad spatial scales, but identifying regional trends in abundance is challenging owing to variable sampling designs, and temporal and spatial variation in abundance. We compiled a regional dataset of brook trout Salvelinus fontinalis counts across their southern range representing 326 sites from...

Pregler, Kasey C.; Hanks, R. Daniel; Childress, Evan S.; Hitt, Nathaniel P.; Hocking, Daniel J.; Letcher, Benjamin H.; Kanno, Yoichiro

Filter Total Items: 1,720
An instrument attached to a floatation orb floats in calm water alongside a boat.
April 30, 2018

Seismic receiver

One of 40 seismic receivers modified to work in water and anchored to the bottom of the Sea of Galilee in Israel's Dead Sea fault zone.

Two men pour pink powder into a hole in dirt, another man looks on, everyone is wearing safety gear and a hard hat.
April 30, 2018

Powder for seismic experiments

Contractors pour explosive powder into one of the holes where shots were detonated to provide seismic (sound) energy for the experiment. See study area map for shot locations.

Two men stand in a room looking at something on a table in the background, room filled with large trunks with equipment inside.
April 30, 2018

Downloading data from seismic receivers

Working in a temporary lab in Kibbutz Moran, Lloyd Carothers (left, IRIS-PASSCAL) and Eldad Levi (Geophysical Institute of Israel) download data from seismic receivers (in blue and yellow boxes) retrieved after completion of the Dead Sea fault experiment.

USGS team and R/V Savannah crew prepare to lower the quadpod deployed at the offshore
April 25, 2018

Equipment recovery off Matanzas Inlet, FL

he USGS team and R/V Savannah crew prepare to lower the quadpod deployed at the offshore site onto the deck during recovery operations.  Note all the hairy encrusting organisms that grew in 3 months.

USGS staff uses a radio to determine if an Acoustic Backscatter sensor (white circle) is still operating
April 25, 2018

Can you hear me now?

Steve Suttles (USGS) uses a radio to determine if an Acoustic Backscatter sensor (white circle) is still operating at the end of the deployment.

Deploying ground control targets
April 24, 2018

Ground control targets

Rob Thieler, Sandy Brosnahan and Alex Nichols deploying ground control targets for a UAS study on Coast Guard National Seashore in Eastham, MA.  

 

Drone Pilot Training
April 24, 2018

Drone Pilot Training!

Elizabeth Pendleton and Seth Ackerman of the Woods Hole Coastal and Marine Science Center at A-450 drone pilot training in Gainesville, Florida in January 2018. Drone pilot training was provided by the DOI Office of Aviation Services (OAS), and was also attended by employees from USGS water and volcano centers, other DOI agencies, and the US Forest Service.

Drone Pilot Training
April 24, 2018

Drone Pilot Training!

Elizabeth Pendleton and Seth Ackerman of the Woods Hole Coastal and Marine Science Center at A-450 drone pilot training in Gainesville, Florida in January 2018. Drone pilot training was provided by the DOI Office of Aviation Services (OAS), and was also attended by employees from USGS water and volcano centers, other DOI agencies, and the US Forest Service.

Drone Pilot Training Selfie
April 24, 2018

Drone Pilot Training!

Elizabeth Pendleton and Seth Ackerman of the Woods Hole Coastal and Marine Science Center at A-450 drone pilot training in Gainesville, Florida in January 2018. Drone pilot training was provided by the DOI Office of Aviation Services (OAS), and was also attended by employees from USGS water and volcano centers, other DOI agencies, and the US Forest Service.

Drone operations conducted at Sandy Neck Beach, Barnstable, MA
April 24, 2018

Drone Ops, Sandy Neck Beach, Barnstable, MA

Drone operations conducted at Sandy Neck Barnstable, MA.  Pilots Elizabeth Pendleton and Seth Ackerman are flying a 3DR Solo quadcopter collecting images to be used in the photogrammetry software package, photoscan, to ultimately create 3d surface models.

Drone Pilot Training
April 24, 2018

Drone Pilot Training!

Elizabeth Pendleton and Seth Ackerman of the Woods Hole Coastal and Marine Science Center at A-450 drone pilot training in Gainesville, Florida in January 2018. Drone pilot training was provided by the DOI Office of Aviation Services (OAS), and was also attended by employees from USGS water and volcano centers, other DOI agencies, and the US Forest Service.

Drone Pilot Training
April 24, 2018

Drone Pilot Training!

Elizabeth Pendleton and Seth Ackerman of the Woods Hole Coastal and Marine Science Center at A-450 drone pilot training in Gainesville, Florida in January 2018. Drone pilot training was provided by the DOI Office of Aviation Services (OAS), and was also attended by employees from USGS water and volcano centers, other DOI agencies, and the US Forest Service.

Filter Total Items: 590