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: 16,199
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Year Published: 2016

The effectiveness of water-treatment systems for arsenic used in 11 homes in Southwestern and Central Ohio, 2013

In 2013, the U.S. Geological Survey and the Miami Conservancy District investigated the effectiveness of methods used to remove arsenic from drinking water at 11 homes in southwestern and central Ohio. The untreated (raw) ground-water had arsenic concentrations of 7.7–382 micrograms per liter (µg/L), and the median concentration was 30 µg/L. The...

Thomas, Mary Ann; Ekberg, Mike
Thomas, M.A., and Ekberg, Mike, 2016, The effectiveness of water-treatment systems for arsenic used in 11 homes in Southwestern and Central Ohio, 2013: U.S. Geological Survey Scientific Investigations Report 2015–5156, 26 p., http://dx.doi.org/10.3133/sir20155156.

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Year Published: 2016

Spatial capture-recapture: a promising method for analyzing data collected using artificial cover objects

Spatial capture–recapture (SCR) is a relatively recent development in ecological statistics that provides a spatial context for estimating abundance and space use patterns, and improves inference about absolute population density. SCR has been applied to individual encounter data collected noninvasively using methods such as camera traps,...

Sutherland, Chris; Munoz, David; Miller, David A.W.; Grant, Evan H. Campbell
Sutherland, C., Munoz, D. J., Miller, D. A. W., and Grant, E. H. C., 2016, Spatial capture-recapture: a promising method for analyzing data collected using artificial cover objects: Herpetologica, v. 72, no. 1, p. 6-12.

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Year Published: 2016

Baseline glucocorticoids are drivers of body mass gain in a diving seabird

Life-history trade-offs are influenced by variation in individual state, with individuals in better condition often completing life-history stages with greater success. Although resource accrual significantly impacts key life-history decisions such as the timing of reproduction, little is known about the underlying mechanisms driving resource...

Hennin, Holly; Berlin, Alicia; Love, Oliver P.
Hennin, H. L., Wells-Berlin, A. M., and Love, O. P., 2016, Baseline glucocorticoids are drivers of body mass gain in a diving seabird: Ecology and Evolution, v. 6, no. 6, p. 1702-1711.

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Year Published: 2016

Mercury remediation in wetland sediment using zero-valent iron and granular activated carbon

Wetlands are hotspots for production of toxic methylmercury (MeHg) that can bioaccumulate in the food web. The objective of this study was to determine whether the application of zero-valent iron (ZVI) or granular activated carbon (GAC) to wetland sediment could reduce MeHg production and bioavailability to benthic organisms. Field mesocosms were...

Lewis, Ariel S.; Huntington, Thomas G.; Marvin-DiPasquale, Mark C.; Amirbahman, Aria
Lewis, A.S., Huntington, T.G., Marvin-DiPasquale, M.C., and Amirbahman, A., 2016, Mercury remediation in wetland sediment using zero-valent iron and granular activated carbon: Environmental Pollution, v. 212, p. 366-373. http://dx.doi.org/10.1016/j.envpol.2015.11.047

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Year Published: 2016

Integrating geological archives and climate models for the mid-Pliocene warm period

The mid-Pliocene Warm Period (mPWP) offers an opportunity to understand a warmer-than-present world and assess the predictive ability of numerical climate models. Environmental reconstruction and climate modelling are crucial for understanding the mPWP, and the synergy of these two, often disparate, fields has proven essential in confirming...

Haywood, Alan M.; Dowsett, Harry J.; Dolan, Aisling M.

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Year Published: 2016

Bioaccessibility tests accurately estimate bioavailability of lead to quail

Hazards of soil-borne Pb to wild birds may be more accurately quantified if the bioavailability of that Pb is known. To better understand the bioavailability of Pb to birds, we measured blood Pb concentrations in Japanese quail (Coturnix japonica) fed diets containing Pb-contaminated soils. Relative bioavailabilities were expressed by comparison...

Beyer, W. Nelson; Basta, Nicholas T; Chaney, Rufus L.; Henry, Paula F. P.; Mosby, David; Rattner, Barnett A.; Scheckel, Kirk G.; Sprague, Dan; Weber, John

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Year Published: 2016

Observations of recruitment and colonization by tunicates and associated invertebrates using giant one-meter2 recruitment plates at Woods Hole, Massachusetts

Large recruitment plates measuring 1 × 1 m were deployed over an 18-month period from September 2013 to March 2015 for the purpose of documenting recruitment and colonization processes of marine invertebrate species at Woods Hole, Massachusetts. Each side of two plates was subdivided into 16 subareas (25 × 25 cm), and an observational...

Valentine, Page C.; Carman, M.R.; Blackwood, Dann S.
Valentine, Page, Carman, Mary R., and Blackwood, Dann, 2016, Observations of recruitment and colonization by tunicates and associated invertebrates using giant one-meter2 recruitment plates at Woods Hole, Massachusetts: Management of Biological Invasions, v. 7, p. 115-130.

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Year Published: 2016

The Laramide Caborca orogenic gold belt of northwestern Sonora, Mexico; white mica 40Ar/39Ar geochronology from gold-rich quartz veins

Introduction This report contains reduced 40Ar/39Ar geochronological data from 63 hydrothermal white mica samples separated from orogenic gold-rich quartz veins in the Laramide Caborca orogenic gold belt (COGB) of northwestern Sonora, Mexico. The main objective of this report is to present the sample locations, 40Ar/39Ar experimental methodology,...

Izaguirre, Aldo; Kunk, Michael J.; Iriondo, Alexander; McAleer, Ryan J.; Caballero-Martinez, Juan Antonio; Espinosa-Arámburu, Enrique
Izaguirre, Aldo, Kunk, M.J., Iriondo, Alexander, McAleer, Ryan, Caballero-Martínez, J.A, and Espinosa Arámburu, Enrique, 2016, The Laramide Caborca orogenic gold belt of northwestern Sonora, Mexico; white mica 40Ar/39Ar geochronology from gold-rich quartz veins: U.S. Geological Survey Open-File Report 2016–1008, 30 p., http://dx.doi.org/10.3133/ofr20161008.

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Year Published: 2016

Effects of permafrost aggradation on peat properties as determined from a pan-Arctic synthesis of plant macrofossils

Permafrost dynamics play an important role in high-latitude peatland carbon balance and are key to understanding the future response of soil carbon stocks. Permafrost aggradation can control the magnitude of the carbon feedback in peatlands through effects on peat properties. We compiled peatland plant macrofossil records for the northern...

Treat, Claire C.; Jones, Miriam C.; Camill, P.; Gallego-Sala, A.; Garneau, M.; Harden, Jennifer W.; Hugelius, G.; Klein, E.S.; Kokfelt, Ulla; Kuhry, P.; Loisel, Julie; Mathijssen, J.H.; O'Donnell, J.A.; Oksanen, P.O.; Ronkainen, T.M.; Sannel, A. B. K.; Talbot, J. J.; Tarnocal, C.M.; Valiranta, M.
Treat, C.C., Jones, M.C., Camill, P., Gallego-Sala, A., Gameau, M., Harden, J.W., Hugelius, G., Klein, E.S., Kokfelt, U., Kuhry, P. Loisel, J., Mathijssen, P.J.H., O'Donnell, J.A., Oksanen, P.O., Ronkainen. T.M., Sannell, A.B.K., Talbot, J., Valiranta, M., 2016, Effects of permafrost aggradation on peat properties as determined from a pan-Arctic synthesis of plant macrofossils: Journal of Geophysical Research. Biogeosciences, 121, doi:10.1002/2015JG003061.

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Year Published: 2016

Evaluating a portable cylindrical bait trap to capture diamondback terrapins in salt marsh

Diamondback terrapins (Malaclemys terrapin) are currently in decline across much of their historical range, and demographic data on a regional scale are needed to identify where their populations are at greatest risk. Because terrapins residing in salt marshes are difficult to capture, we designed a cylindrical bait trap (CBT) that could be...

Henry, Paula F. P.; Haramis, G. Michael; Day, Daniel D.
Henry, P. F. P., Haramis, G. M., and Day, D. D., 2016, Evaluating a portable cylindrical bait trap to capture diamondback terrapins in salt marsh: Wildlife Society Bulletin, v. 40, no. 1, p. 160-168.

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Year Published: 2016

Ascent ability of brown trout, Salmo trutta, and two Iberian cyprinids − Iberian barbel, Luciobarbus bocagei, and northern straight-mouth nase, Pseudochondrostoma duriense − in a vertical slot fishway

Passage performance of brown trout (Salmo trutta), Iberian barbel (Luciobarbus bocagei), and northern straight-mouth nase (Pseudochondrostoma duriense) was investigated in a vertical slot fishway in the Porma River (Duero River basin, Spain) using PIT telemetry. We analysed the effects of different fishway discharges on motivation and passage...

Sanz-Ronda, Fco. Javier; Bravo-Cordoba, F.J.; Fuentes-Perez, J.F.; Castro-Santos, Theodore R.
Sanz-Ronda, F. J., J. Ruiz-Legazpi, F. J. Bravo-Córdoba, S. Makrakis and T. Castro-Santos. 2015. Ascent ability of brown trout, Salmo trutta, and two Iberian cyprinids − Iberian barbel, Luciobarbus bocagei, and northern straight-mouth nase, Pseudochondrostoma duriense −in a vertical slot fishway. Knowledge and Management of Aquatic Ecosystems.2016(417): 10. DOI: http://dx.doi.org/10.1051/kmae/2015043

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Year Published: 2016

Estimating time-dependent connectivity in marine systems

Hydrodynamic connectivity describes the sources and destinations of water parcels within a domain over a given time. When combined with biological models, it can be a powerful concept to explain the patterns of constituent dispersal within marine ecosystems. However, providing connectivity metrics for a given domain is a three-dimensional problem...

Defne, Zafer; Ganju, Neil K.; Aretxabaleta, Alfredo

Filter Total Items: 1,774
Health Assessment on northern snakehead fish

Health Assessment on northern snakehead fish

Dr.s Densmore and Henderson conducting a health assessment on a northern snakehead fish. This fish species is an air breather so health assessments out of water are not impossible to perform. 

Image: Spednic Lake Sunrise

Spednic Lake Sunrise

Sunrise on the shore of Spednic Lake before heading out on the lake to collect data for a study. 

Densmore uses ultrasound

Densmore uses ultrasound

Dr. Christine Densmore, DVM uses an ultrasound on fish as part of a health assessment.

Image: Kenduskeag Stream

Kenduskeag Stream

Six Mile Falls on Kenduskeag Stream at USGS station 01037000.

Head of the Meadow Beach video camera 2 snapshot

Two video cameras are mounted on a bluff near Head of the Meadow Beach, Cape Cod National Seashore, North Truro, MA. One camera looks directly offshore (north east), and the second looks alongshore (north-northeast). The snapshot is the first frame of the video, just like a standard photo. Today’s most recent image from camera 2, pointing offshore, is shown here. Please

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Image: Flooded Road

Flooded Road near USGS gaging station 01055500 in Turner, Maine

Stop sign at the end of School House Hill Rd in Turner, Maine near USGS gaging station 01055500 on the Nezinscot River.

Photograph of Head of the Meadow Beach shoreline

Head of the Meadow Beach video camera 1 bright image

Two video cameras are mounted on a bluff near Head of the Meadow Beach, Cape Cod National Seashore, North Truro, MA. One camera looks directly offshore (north east), and the second looks alongshore (north-northeast). A “bright” image shows the brightest pixel values throughout the video, useful for identifying the position of maximum wave run-up on the beach, position of

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