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: 1,126
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: 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: 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.

Date published: February 2, 2018
Status: Active

Climate Change

Climate change could pose a number of problems for amphibians, and can be grouped into 4 main categories:

1) changes in the local environments they inhabit (soil temperature, prey availability)

2) changes in the phenology (timing) of activities such as foraging and breeding

3) changes in the presence of pathogens and exotic species

4) interactions of climate with...

Date published: February 2, 2018
Status: Active

Amphibian Diseases

Amphibian diseases are emerging as an important concern in the study of amphibian declines. While NE ARMI does not focus intensively on amphibian disease research, the issue plays an important role in our activities.

Date published: February 2, 2018
Status: Active

NE ARMI - Collaborators and Partners

Partners and Collaborators of the Northeast Amphibian Research & Monitoring Initiative

Date published: February 2, 2018
Status: Active

Deep-Sea Coral Ecosystems

Although out of sight to most, a diverse array of coral species thrive deep below the photic zone off U.S. coasts and worldwide. Deep-sea corals can be found at depths greater than 50m, where sunlight does not penetrate. Similar to shallow-water corals, larger sea fan and reef-forming deep-sea coral species create structural complexity in the deep sea, attracting fishes and invertebrates that...

Date published: January 31, 2018
Status: Active

A New Collaborative Project to Understand Red-backed Salamander Population Dynamics and Climate Change Adaptation

In 2013, the Salamander Population and Adaptation Research Network started as a partnership between researchers at Penn State University and the USGS Northeast Amphibian and Research Monitoring Initiative with...

Filter Total Items: 16,199
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Year Published: 2019

Molecular identification of fecal contamination in the Elks Run Watershed, Jefferson County, West Virginia, 2016–17

The U.S. Geological Survey conducted a study using modern methods of molecular analysis aimed at attempting to identify the source(s) of fecal contamination that had been identified in previous studies conducted by the West Virginia Conservation Agency in the Elk Run watershed, Jefferson County, West Virginia. Water samples from multiple sites...

Schill, W. Bane; Iwanowicz, Deborah D.
Schill, W.B., and Iwanowicz, D.D., 2019, Molecular identification of fecal contamination in the Elks Run watershed, Jefferson County, West Virginia, 2016–17: U.S. Geological Survey Open-File Report 2019–1064, 9 p., https://doi.org/10.3133/ofr20191064.

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Year Published: 2019

Spatial distribution of water level impact to back-barrier bays

Water level in semi-enclosed bays, landward of barrier islands, is mainly driven by offshore sea level fluctuations that are modulated by bay geometry and bathymetry, causing spatial variability in the ensuing response (transfer). Local wind setup can have a secondary role that depends on wind speed, fetch, and relative orientation of the wind...

Aretxabaleta, Alfredo; Ganju, Neil Kamal; Defne, Zafer; Signell, Richard P.
Aretxabaleta, A.L., Ganju, N.K., Defne, Z., and Signell, R.P., 2019, Spatial distribution of water level impacting back-barrier bays: Natural Hazards and Earth System Sciences, v. 19, no. 8, 1823-1838 p doi:10.5194/nhess-19-1823-2019.

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Year Published: 2019

The effects of seasonal temperature and photoperiod manipulation on reproduction in the eastern elliptio Elliptio complanata

The eastern elliptio Elliptio complanata is a species of freshwater mussel common to streams and rivers of the Atlantic Coast. Egg fertilization, larval brooding, and glochidial release are reported to occur within a period of several weeks during early to midsummer. In this study, mussels were exposed to manipulated photoperiod and...

Blakeslee, Carrie J.; Lellis, William A.

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Year Published: 2019

Phytoplankton community structure response to groundwater-borne nutrients in the inland bays, Delaware

To determine the impacts of groundwater-borne nutrients on phytoplankton biomass and community structure, we conducted a series of mesocosm experiments in the Inland Bays of Delaware. Four treatments were tested, including mesocosms coupled directly to submarine groundwater seepage, mesocosms with the addition of pumped submarine groundwater,...

Torre, Daniel; Coyne, Kathryn; Kroeger, Kevin D.; York, Joanna K.

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Year Published: 2019

Paleoliquefaction field reconnaissance in eastern North Carolina—Is there evidence for large magnitude earthquakes between the central Virginia seismic zone and Charleston seismic zone?

In June 2016, approximately 64 kilometers (km) of riverbank were examined along the Tar and Neuse Rivers near Tarboro and Kinston, North Carolina, for evidence of liquefaction-forming earthquakes. The study area is in the vicinity of the Grainger’s fault zone in eastern North Carolina. The Grainger’s fault zone is a fault zone in the inner Coastal...

Carter, Mark W.; McLaurin, Brett T.
Carter, M.W., and McLaurin, B.T., 2019, Paleoliquefaction field reconnaissance in eastern North Carolina—Is there evidence for large magnitude earthquakes between the Central Virginia Seismic Zone and Charleston Seismic Zone?: U.S. Geological Survey Scientific Investigations Report 2019–5057, 54 p., https://doi.org/10.3133/sir20195057.

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Year Published: 2019

Soil mineralogy and geochemistry along a north-south transect in Alaska and the relation to source-rock terrane

Soils collected along a predominately north-south transect in Alaska were used to evaluate regional differences in the soil mineralogy and geochemistry in the context of a geotectonic framework for Alaska. The approximately 1,395-kilometer-long transect followed the Dalton, Elliott, and Richardson Highways from near Prudhoe Bay to Valdez. Sites...

Wang, Bronwen; Hults, Chad P.; Eberl, Dennis D.; Woodruff, Laurel G.; Cannon, William F.; Gough, Larry P.
Wang, B., Hults, C., Eberl, D., Woodruff, L., Cannon, W., and Gough, L., 2019, Soil mineralogy and geochemistry along a north-south transect in Alaska and the relation to source-rock terrane in Dumoulin, J.A., ed., Studies by the U.S. Geological Survey in Alaska, vol. 15: U.S. Geological Survey Professional Paper 1814–E, 27 p., https://doi.org/10.3133/pp1814E.

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Year Published: 2019

Eviction notice: Observation of a Common Tern (Sterna hirundo) usurping an active Least Tern (Sternula antillarum) Nest

Although nest usurpation is common in some species and orders of birds, usurpation has rarely been reported for Sterninae. We observed a Sterna hirundo (Common Tern) egg in an active Sternula antillarum(Least Tern) nest with a complete clutch in a mixed-species Sterninae colony in Chesapeake Bay, MD, in May 2018. Based on...

Riggs, Georgia J.; Sullivan, Jeffery D.; Harvey, Kayla M.; Pappas, Dimitri A.; Wall, Jennifer L.; McGowan, Peter C.; Callahan, Carl R.; Koppie, Craig A.; Prosser, Diann

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Year Published: 2019

Confronting models with data: The challenges of estimating disease spillover

For pathogens known to transmit across host species, strategic investment in disease control requires knowledge about where and when spillover transmission is likely. One approach to estimating spillover is to directly correlate observed spillover events with covariates. An alternative is to mechanistically combine information on host density,...

Cross, Paul C.; Prosser, Diann; Ramey, Andrew M.; Hanks, Ephraim M.; Pepin, Kim M.

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Year Published: 2019

Mid-piacenzian of the north Atlantic Ocean

The Piacenzian Age (Pliocene) represents a past climate interval within which frequency and magnitude of environmental changes during a period of past global warmth can be analyzed, climate models can be tested, and results can be placed in a context to better prepare for future change. Here we focus on the North Atlantic region, incorporating new...

Dowsett, Harry J.; Robinson, Marci M.; Foley, Kevin M.; Herbert, Timothy D.; Otto-Bliesner, Bette L.; Spivey, Whittney

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Year Published: 2019

Use of set blanks in reporting pesticide results at the U.S. Geological Survey National Water Quality Laboratory, 2001-15

Executive SummaryBackground.—Pesticide results from the U.S. Geological Survey (USGS) National Water Quality Laboratory (NWQL) are used for water-quality assessments by many agencies and organizations. The USGS is committed to providing data of the highest possible quality to the consumers of its data. A cooperator’s inquiries about specific...

Medalie, Laura; Sandstrom, Mark W.; Toccalino, Patricia L.; Foreman, William T.; ReVello, Rhiannon C.; Bexfield, Laura M.; Riskin, Melissa L.
Medalie, L., Sandstrom, M.W., Toccalino, P.L., Foreman, W.T., ReVello, R.C., Bexfield, L.M., and Riskin, M.L., 2019, Use of set blanks in reporting pesticide results at the U.S. Geological Survey National Water Quality Laboratory, 2001–15: U.S. Geological Survey Scientific Investigations Report 2019–5055, 147 p., https://doi.org/10.3133/sir20195055.

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Year Published: 2019

Canals, backfilling and wetland loss in the Mississippi Delta

Canals and spoil banks have contributed significantly to high rates of wetland loss in the Mississippi delta. There has been relatively little research on management of canals and spoil banks and this needs to be a significant component of restoration of the delta. We analyze research on the role of backfilling canals in the context of delta...

Day, John W.; Shaffer, Gary P.; Cahoon, Donald; DeLaune, Ronald D.

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Year Published: 2019

Promoting change in common tern (Sterna hirundo) nest site selection to minimize construction related disturbance

With dramatic declines in waterbird populations around the globe, wildlife managers have taken great care to minimize disturbance to breeding waterbird colonies. However, sometimes disturbance cannot be avoided and other actions must be considered. During the 2017 breeding season, a colony of Sterna hirundo (Common terns) were deterred from a...

McGowan, Peter C.; Sullivan, Jeffery D.; Callahan, Carl C.; Schultz, William; Wall, Jennifer L.; Prosser, Diann

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Dr. Meagan Gonneea (Cape Cod, MA) retrieves a core from an infilling salt marsh pond in the Great Barnstable Marsh
July 9, 2018

Core retrieval

Dr. Meagan Gonneea (Cape Cod, MA) retrieves a core from an infilling salt marsh pond in the Great Barnstable Marsh.

Core splitter mounted on the layout table
June 28, 2018

Core Splitter

The Woods Hole Coastal and Marine Science Center’s Samples Repository provides space and services for processing and sampling of materials and collections.

Cores can be split in-house using a custom-made sediment core splitter, which utilizes two Bosch1 oscillating tools with flush cut blade attachments mounted to a sliding carriage that moves over a

...
Camera system mounted to the ceiling
June 28, 2018

Samples Repository ceiling mounted camera system

The Woods Hole Coastal and Marine Science Center’s Samples Repository provides space and services for processing and sampling of materials and collections. Sample photography uses a Nikon1 D90 SLR camera mounted to the ceiling directly above the layout table in the sample preparation area. This camera is connected to a designated computer workstation and can be

...
USGS personnel prepare for an unmanned aerial system take off
June 27, 2018

Woods Hole UAS Pilots in Hawaii

Providing situational awareness at night, Elizabeth PendletonSandy Brosnahan, and Emily Sturdivant prepare for a UAS take-off

Photograph of USGS UAS pilot wearing an orange USGS shirt
June 25, 2018

Woods Hole's Aerial Imaging and Mapping pilots in Hawaii

Woods Hole Coastal and Marine Science Center's Aerial Imaging and Mapping rock stars preparing to fly Unmanned Aerial Systems (UAS) mission while a river of lava flows in the background

A lab technician holds up a pollen slide to a white piece of paper
June 15, 2018

Slide of Pollen, Pollen Laboratory

A lab technician holds up the finished product after processing: an almost pure slide of pollen.

A lab technician takes sample weights before drying them in the oven
June 15, 2018

Weighing Sediment Samples from the Great Dismal Swamp, 2018

In the sample preperation room, a lab technician weighs sediments samples before placing them in a warming oven to dry.

A image of the acetolysis set up in a fume hood
June 15, 2018

Acetolysis Set-Up, Pollen Laboratory

Seen in this image is the acetolysis set up. Acetolysis is used to remove the genetic material from inside the pollen, which allows the scientists to better identify and count the pollen.

An image of pollen under a microscope
June 15, 2018

Pollen Under a Microscope

This image was taken through the eyepiece of a microscope. Pollen is mixed in with a few larger pieces of organic material.

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