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: 15,971
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Year Published: 2019

Functional divergence of thyrotropin beta-subunit paralogs gives new insights into salmon smoltification metamorphosis

Smoltification is a metamorphic event in salmon life history, which initiates downstream migration and pre-adapts juvenile salmon for seawater entry. While a number of reports concern thyroid hormones and smoltification, few and inconclusive studies have addressed the potential role of thyrotropin (TSH). TSH is composed of a α-subunit common to...

Fleming, Mitchell S; Maugars, Gersende; LaFont, Anne-Gaelle; Fontaine, Romain; Weltzien, Finn-Arne; McCormick, Stephen D.

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Year Published: 2019

North American Commission on Stratigraphic Nomenclature Note 69 – Application for addition of subseries/subepoch to the North American Stratigraphic Code

Consistency in stratigraphic nomenclature enables communication among scientists both regionally and globally, thus requiring the North American Stratigraphic Code, as presented by the North American Commission on Stratigraphic Nomenclature, to follow international convention. The ratification of three subseries of the Holocene by the...

Aubry, Marie-Pierre; Fluegeman, Richard H.; Edwards, Lucy E.; Pratt, Brian R.; Brett, Carlton E.

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Year Published: 2019

Assessment of skin and liver neoplasms in white sucker (Catostomus commersonii) collected in the Sheboygan River Area of Concern, Wisconsin, in 2017

Two hundred adult white sucker (Catostomus commersonii), age 3 years and older, were collected from the lower Sheboygan River Area of Concern in 2017, during the spring spawning run. Fish were euthanized, weighed, and measured, and any visible abnormalities were documented. Pieces of raised skin lesions as well as five to eight pieces of liver...

Blazer, Vicki S.; Walsh, Heather L.; Braham, Ryan P.; Mazik, Patricia M.
Blazer, V.S., Walsh, H.L., Braham, R.P., and Mazik, P.M., 2019, Assessment of skin and liver neoplasms in white sucker (Catostomus commersonii) collected in the Sheboygan River Area of Concern, Wisconsin, in 2017: U.S. Geological Survey Open-File Report 2019–1014, 18 p., https://doi.org/10.3133/ofr20191014.

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Year Published: 2019

Recreational impacts to wildlife: Managing visitors and resources to protect wildlife

Publication Abstract: Visitor use management is essential for maximizing benefits for visitors while achieving and maintaining desired resource conditions and visitor experiences on federally managed lands and waters. Visitor capacity, a component of visitor use management, is defined as the maximum amounts and types of visitor use that an area...

Marion, Jeffrey L.
Marion, Jeffrey L. 2019. Recreational Impacts to Wildlife: Managing Visitors and Resources to Protect Wildlife. Interagency Visitor Use Management Council Contributing Paper, Edition One.

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Year Published: 2019

Widespread global peatland establishment and persistence over the last 130,000 y

Glacial−interglacial variations in CO2 and methane in polar ice cores have been attributed, in part, to changes in global wetland extent, but the wetland distribution before the Last Glacial Maximum (LGM, 21 ka to 18 ka) remains virtually unknown. We present a study of global peatland extent and carbon (C) stocks through the last glacial...

Treat, Claire C.; Kleinen, Thomas ; Broothaerts , Nils ; Dalton , April S. ; Dommain, Rene; Douglas, Thomas A.; Drexler, Judith Z.; Finkelstein, Sarah A; Grosse, Guido; Hope , Geoffrey ; Hutchings , Jack ; Jones, Miriam C.; Kuhry, Peter; Lacourse, Terri; Lähteenoja, Outi ; Loisel, Julie; Notebaert , Bastiaan; Payne, Richard; Peteet, Dorothy M.; Sannel , A. Britta K. ; Stelling , Jonathan M. ; Strauss , Jens; Swindles, Graeme T.; Talbot, Julie ; Tarnocai, Charles; Verstraeten, Gert ; Williams , Christopher J. ; Xia , Zhengyu ; Yu, Zicheng; Väliranta, Minna ; Hättestrand, Martina ; Alexanderson, Helena ; Brovkin , Victor

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Year Published: 2019

Mercury speciation and retention in a salt marsh undergoing long-term fertilization

Experimental plots in Great Sippewissett Marsh (Falmouth, MA USA) have been undergoing long-term (>48 years) fertilization through the application of commercial sewage sludge-based fertilizer. The experimental treatment focuses on the effect of added nitrogen on the salt marsh plots, but also supplies mercury (Hg)...

Lamborg, Carl; Mincer, Tracy; Buchanan, William; Collins, Caroline; Swarr, Gretchen; Ganguli, Priya M.; Whalen, Kristen; Bothner, Michael H.; Valiela, Ivan

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Year Published: 2019

Flood-inundation maps for Lake Champlain in Vermont and New York

In 2016, digital flood-inundation maps along the shoreline of Lake Champlain in Addison, Chittenden, Franklin, and Grand Isle Counties in Vermont and northern Clinton County in New York were created by the U.S. Geological Survey (USGS) in cooperation with the International Joint Commission (IJC). This report discusses the creation of updated...

Flynn, Robert H.; Hayes, Laura
Flynn, R.H., and Hayes, L., 2019, Flood-inundation maps for Lake Champlain in Vermont and New York: U.S. Geological Survey Scientific Investigations Report 2018–5169, 14 p., https://doi.org/10.3133/sir20185169. [Supersedes USGS Scientific Investigations Report 2016–5060.]

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Year Published: 2019

Spatial distribution of nutrients, chloride, and suspended sediment concentrations and loads determined by using different sampling methods in a cross section of the Trenton Channel of the Detroit River, Michigan, November 2014–November 2015

The Detroit River separates the United States and Canada as it flows from Lake St. Clair to Lake Erie. The Trenton Channel is a 13-kilometer-long branch of the Detroit River that flows to the west of Grosse Ile before rejoining the Detroit River near its mouth, just before the Detroit River flows into Lake Erie. The U.S. Environmental Protection...

Totten, Alexander R.; Duris, Joseph W.
Totten, A.R., and Duris, J.W., 2019, Spatial distribution of nutrients, chloride, and suspended sediment concentrations and loads determined by using different sampling methods in a cross section of the Trenton Channel of the Detroit River, Michigan, November 2014–November 2015: U.S. Geological Survey Scientific Investigations Report 2018–5141, 25 p., https://doi.org/10.3133/sir20185141.

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Year Published: 2019

Fungicides: An overlooked pesticide class?

Fungicides are indispensable to global food security and their use is forecasted to intensify. Fungicides can reach aquatic ecosystems and occur in surface water bodies in agricultural catchments throughout the whole growing season due to their frequent, prophylactic application. However, in comparison to herbicides and insecticides, the exposure...

Zubrod, Jochen; Bundschuh, Micro; Arts, Gertie; Bruhl, Carsten; Imfeld, Gwenaël; Knäbel, Anja; Payraudeau, Sylvain; Rasmussen, Jes J; Rohr, Jason; Scharmüller, Andreas; Smalling, Kelly; Stehle, Sebastian; Schulz, Ralf; Schäfer, Ralf B.

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Year Published: 2019

An assessment of plant species differences on cellulose oxygen isotopes from two Kenai Peninsula, Alaska peatlands: Implications for hydroclimatic reconstructions

Peat cores are valuable archives of past environmental change because they accumulate plant organic matter over millennia. While studies have primarily focused on physical, ecological, and some biogeochemical proxies, cores from peatlands have increasingly been used to interpret hydroclimatic change using stable isotope analyses of cellulose...

Jones, Miriam; Anderson, Lesleigh; Keller, Katherine; Nash, Bailey; Littell, Virginia; Wooller, Matthew J.; Jolley, Chelsea

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Year Published: 2019

Unprocessed atmospheric nitrate in waters of the Northern Forest Region in the USA and Canada

Little is known about the regional extent and variability of nitrate from atmospheric deposition that is transported to streams without biological processing in forests. We measured water chemistry and isotopic tracers (δ18O and δ15N) of nitrate sources across the Northern Forest Region of the U.S. and Canada and reanalyzed data from other studies...

Sebestyen, Stepen D; Ross, Donald D; Shanley, James B.; Elliott, Emily M.; Kendall, Carol; Campbell, John L.; Dail, D Bryan; Fernandez, Ivan J; Goodale, Christine L; Lawrence, Gregory B.; Lovett, Gary M.; McHale, Patrick J; Mitchell, Myron J; Nelson, Sarah J.; Shattuck, Michelle D; Wickman, Trent R; Barnes, Rebecca T.; Bostic, Joel T.; Buda, Anthony R; Burns, Douglas A; Eshleman, Keith N.; Finlay, Jacques C.; Nelson, David M.; Ohte, Nobuhito; Pardo, Linda H; Rose, Lucy A; Sabo, Robert J; Schiff, Sherry L.; Spoelstra, John; Williard, Karl W

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Year Published: 2019

Evidence for a duplicated mitochondrial region in Audubon’s shearwater based on MinION sequencing

Mitochondrial genetic markers have been extensively used to study the phylogenetics and phylogeography of many birds, including seabirds of the order Procellariiformes. Evidence suggests that part of the mitochondrial genome of Procellariiformes, especially albatrosses, is duplicated, but no DNA fragment covering the entire duplication has been...

Torres, Lucas; Welch, Andreanna J.; Zanchetta, Catherine; Chesser, Terry; Manno, Maxime; Donnadieu, Cecile; Bretagnolle, Vincent; Pante, Eric

Filter Total Items: 1,709
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
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.

USGS team on the fantail of the R/V Savannah
April 20, 2018

Woods Hole oceanographic equipment recovery team

The USGS team (Eric Marsjanik, Steve Suttles, Dann Blackwood, Marinna Martini, and Ellyn Montgomery (l-r) on the fantail of the R/V Savannah as they steamed back to port after a successful recovery.

orange acoustic doppler current profiler floating in river surrounded by snow-covered trees
April 17, 2018

Cattaraugus Creek near Springville, NY

ADCP measurement on a snowy day at the Cattaraugus Creek near Springville, NY

Filter Total Items: 590