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One of the major strengths of the Northeast Area is the enthusiasm and commitment of our scientists to produce the type of high quality science that the USGS is known for. Working together with our partners across the nation, we have the ability to provide complete, integrated and holistic environmental information that will produce the best results that we can achieve.

Filter Total Items: 143
Red-eared Slider (Trachemys scripta elegans)
Date Published: August 29, 2016
Status: Completed

Endocrine Active Effects on Turtle Embryonic Development

The Challenge: Emerging contaminants may be in part responsible for recent endocrine disruption observed in fish in the Chesapeake Bay watershed. Endocrine active compounds implicated in the decline of fish populations may affect other wildlife as well. There are 6 species of turtles and 5 of snakes living within the main-stem and tidal areas of the Bay. As poikilotherms, reptiles are...

Box Turtle, Terrapene carolina
Date Published: August 26, 2016
Status: Completed

The Eastern Box Turtle at USGS Patuxent Wildlife Research Center, MD

The Challenge: Once common to forest and backyard habitats, the eastern box turtle (Terrapene carolina) has declined sharply. Threats to box turtles include loss and fragmentation of their habitat, road mortality, and commercial taking for the international pet trade. Researchers at the USGS Patuxent Wildlife Research Center have 70 years of records on a turtle population located within a 12...

Mammals of South America Vol 1 & 2
Date Published: August 23, 2016

The Mammals of South America

The Challenge: Accurate comprehensive information on current names of species and subspecies, their distributions, and means for their identification are required for effective conservation, management, scientific study, and enforcement of laws governing take, protection, and commerce. For the South American continent, up-to-date references containing this information have not been available...

Rafinesque's Cabree
Date Published: August 19, 2016

Rafinesque’s Mammals

The Challenge: Taxonomic nomenclature relies, in part, upon an accurate taxonomic history in order to establish the correct name for a taxon. Constantine S. Rafinesque (1783–1840), was a knowledgeable North American natural historian who was is responsible for describing and naming such iconic American mammals as the mule deer [Odocoileus hemionus (Rafinesque, 1817)] and the white-footed mouse...

Inverted x-rays of femurs of a least shrew
Date Published: August 19, 2016

Survival of the Least Fit: Incidence of Physical Trauma in a Wild Mammal Community

The Challenge: It has been generally considered that a severe injury to a wild mammal that seemingly limits its ability to forage for food or escape predators will almost certainly lead to that individual’s demise.  Inspection of skeletons of wild caught small mammals, however, has revealed a surprising number of individuals with healed fractures of the skeletal bones―including the primary...

Tree shrew cover page for Journal of Mammalogy
Date Published: August 19, 2016
Status: Active

Diversity and Biogeography of Treeshrews

The Challenge: Treeshrews (order Scandentia) are small-bodied mammals endemic to South and Southeast Asia. Since it was first described in 1820, the Common Treeshrew (Tupaia glis) has had a complex taxonomic history that has led to widely variable estimates of diversity, misidentification of populations, and general confusion regarding it and closely related species. One result is that T. glis...

Sea Otter
Date Published: August 19, 2016

Biodiversity of North American Mammals

The Challenge: Despite more than a century and a half of study, accurate understanding of the diversity North American mammalian species and the distribution of those species remains unrefined. Yet this understanding is essential for determining the conservation status of species, for mapping out potential disease reservoirs, and for understanding the response of species to habitat...

X-ray of a snake that has eaten a lizard
Date Published: August 18, 2016

Collections and Collection Management

The Challenge: How can we preserve and maintain evidence from our scientific past and continue to smartly expand that resource to help scientists find the answers to the questions and challenges they will face in the future?

A genetic analysis illustration
Date Published: August 10, 2016
Status: Active

Molecular Ecology Lab (MEL)

The Molecular Ecology Laboratory applies genetic and genomic technologies to address a variety of complex questions and conservation issues facing the management of the Nation's fish and wildlife resources. Together with our partners, we design and implement studies to document genetic diversity and the distribution of genetic variation among individuals, populations, and species. Information...

Collecting measurements from SET
Date Published: August 1, 2016
Status: Active

Hurricane Sandy Impacts on Coastal Wetland Resilience in the Northeast United States

The Challenge: The high winds and storm surge associated with Hurricane Sandy impacted coastal wetlands from Virginia to Maine. Understanding the ecological and geological impacts of hurricanes on coastal wetlands and their interactive effects with local conditions is important for identifying resilience of these communities to predicted global sea-level rise. Given the projected increase in...

USGS
Date Published: July 19, 2016
Status: Active

Patuxent Library Services

The Patuxent Library provides reference services and support to the staff of the Patuxent Wildlife Research Center and also responds to inquiries from the general public. The collection focuses on birds, contaminants, monitoring, and wetlands as related to wildlife research. 

Contacts: Shannon Beliew
Herring Gull
Date Published: July 14, 2016

Species Identification in the White-headed Gull Complex

The Challenge: The Federal Aviation Administration has long relied on the expertise provided by the Smithsonian Feather Identification Lab for identification of bird remains recovered from bird-aircraft (birdstrike) collisions. Recently, these identifications are increasingly reliant on data from mitochondrial DNA. While generally successful in delimiting species, mitochondrial DNA is not...

Filter Total Items: 944
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Year Published: 2017

Neutron scattering measurements of carbon dioxide adsorption in pores within the Marcellus Shale: Implications for sequestration

Shale is an increasingly viable source of natural gas and a potential candidate for geologic CO2sequestration. Understanding the gas adsorption behavior on shale is necessary for the design of optimal gas recovery and sequestration projects. In the present study neutron diffraction and small-angle neutron scattering measurements of adsorbed CO2...

Stefanopoulos, Konstantinos L.; Youngs, Tristan G. A.; Sakurovs, Richard; Ruppert, Leslie F.; Bahadur, Jitendra; Melnichenko, Yuri B.
Stefanopoulos, K.L., Youngs, T.G.A., Sakurovs, R., Ruppert, L.F., Bahadur, J., and Melnichenko, Y.B., 2017, Neutron scattering measurements of carbon dioxide adsorption in Marcellus Shale samples: Implications for sequestration: Environmental Science and Technology, v. 51, p 6515–6521.

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Year Published: 2017

Undiscovered porphyry copper resources in the Urals—A probabilistic mineral resource assessment

A probabilistic mineral resource assessment of metal resources in undiscovered porphyry copper deposits of the Ural Mountains in Russia and Kazakhstan was done using a quantitative form of mineral resource assessment. Permissive tracts were delineated on the basis of mapped and inferred subsurface distributions of igneous rocks assigned to...

Hammarstrom, Jane M.; Mihalasky, Mark J.; Ludington, Stephen; Phillips, Jeffrey; Berger, Byron R.; Denning, Paul; Dicken, Connie; Mars, John C.; Zientek, Michael L.; Herrington, Richard J.; Seltmann, Reimar
Hammarstrom, J. M., Mihalasky, M. J., Ludington, S., Phillips, J. D., Berger, B. R., Denning, P. D., … Seltmann, R. (2017). Undiscovered porphyry copper resources in the Urals—A probabilistic mineral resource assessment. Ore Geology Reviews, 85, 181–203

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Year Published: 2017

Geogenic organic contaminants in the low-rank coal-bearing Carrizo-Wilcox aquifer of East Texas, USA

The organic composition of groundwater along the Carrizo-Wilcox aquifer in East Texas (USA), sampled from rural wells in May and September 2015, was examined as part of a larger study of the potential health and environmental effects of organic compounds derived from low-rank coals. The quality of water from the low-rank coal-bearing Carrizo-...

Chakraborty, Jayeeta; Varonka, Matthew S.; Orem, William H.; Finkelman, Robert B.; Manton, William

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Year Published: 2017

Observations and a linear model of water level in an interconnected inlet-bay system

A system of barrier islands and back-barrier bays occurs along southern Long Island, New York, and in many coastal areas worldwide. Characterizing the bay physical response to water level fluctuations is needed to understand flooding during extreme events and evaluate their relation to geomorphological changes. Offshore sea level is one of the...

Aretxabaleta, Alfredo; Ganju, Neil K.; Butman, Bradford; Signell, Richard P.
Aretxabaleta, A. L., N. K. Ganju, B. Butman, and R. P. Signell (2017), Observations and a linear model of water level in an interconnected inlet-bay system, J. Geophys. Res. Oceans, 122, doi:10.1002/2016JC012318.

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Year Published: 2017

Microbial methane from in situ biodegradation of coal and shale: A review and reevaluation of hydrogen and carbon isotope signatures

Stable carbon and hydrogen isotope signatures of methane, water, and inorganic carbon are widely utilized in natural gas systems for distinguishing microbial and thermogenic methane and for delineating methanogenic pathways (acetoclastic, hydrogenotrophic, and/or methylotrophic methanogenesis). Recent studies of coal and shale gas systems have...

Vinson, David S.; Blair, Neal E.; Martini, Anna M.; Larter, Steve; Orem, William H.; McIntosh, Jennifer C.
Vinson, D. S., Blair, N. E., Martini, A. M., Larter, S., Orem, W. H., & McIntosh, J. C. (2017). Microbial methane from in situ biodegradation of coal and shale: A review and reevaluation of hydrogen and carbon isotope signatures. Chemical Geology, 453, 128-145.

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Year Published: 2017

Cost implications of uncertainty in CO2 storage resource estimates: A review

Carbon capture from stationary sources and geologic storage of carbon dioxide (CO2) is an important option to include in strategies to mitigate greenhouse gas emissions. However, the potential costs of commercial-scale CO2 storage are not well constrained, stemming from the inherent uncertainty in storage resource estimates coupled with a lack of...

Anderson, Steven T.

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Year Published: 2017

Risk, liability, and economic issues with long-term CO2 storage—A review

Given a scarcity of commercial-scale carbon capture and storage (CCS) projects, there is a great deal of uncertainty in the risks, liability, and their cost implications for geologic storage of carbon dioxide (CO2). The probabilities of leakage and the risk of induced seismicity could be remote, but the volume of geologic CO2 storage (GCS)...

Anderson, Steven T.
Anderson, S.T., 2017, Risk, Liability, and Economic Issues with Long-Term CO2 Storage—A Review: Natural Resources Research, v. 26, no. 1, January, p. 89-112. ISSN: 1520-7439 DOI: 10.1007/s11053-016-9303-6

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Year Published: 2017

Geochemistry of host rocks in the Howards Pass district, Yukon-Northwest Territories, Canada: implications for sedimentary environments of Zn-Pb and phosphate mineralization

Detailed lithogeochemical data are reported here on early Paleozoic sedimentary rocks that host the large Howards Pass stratiform Zn-Pb deposits in Yukon-Northwest Territories. Redox-sensitive trace elements (Mo, Re, V, U) and Ce anomalies in members of the Duo Lake Formation record significant environmental changes. During the deposition of lower...

Slack, John F.; Falck, Hendrik; Kelley, Karen D.; Xue, Gabriel G.

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Year Published: 2017

Re-Os systematics and age of pyrite associated with stratiform Zn-Pb mineralization in the Howards Pass district, Yukon and Northwest Territories, Canada

Stratiform Zn-Pb deposits hosted in unmetamorphosed carbonaceous and siliceous mudstones of the Ordovician to Silurian Duo Lake Formation define the Howards Pass district in Yukon Territory and Northwest Territories, western Canada. Collectively, the deposits are amongst the largest in the world, containing drill-indicated and inferred resources...

Kelley, Karen D.; Selby, David; Falck, Hendrik; Slack, John F.
Kelley, K.D., Selby, D. Falck, H., and Slack, J.F., 2016, Re-Os systematics and age of pyrite associated with stratiform Zn-Pb mineralization in the Howards Pass district, Yukon and Northwest Territories, Canada

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Year Published: 2017

Evidence for early life in Earth’s oldest hydrothermal vent precipitates

Although it is not known when or where life on Earth began, some of the earliest habitable environments may have been submarine-hydrothermal vents. Here we describe putative fossilized microorganisms that are at least 3,770 million and possibly 4,280 million years old in ferruginous sedimentary rocks, interpreted as seafloor-hydrothermal vent-...

Dodd, Matthew S.; Papineau, Dominic; Grenne, Tor; Slack, John F.; Rittner, Martin; Pirajno, Franco; O’Neil, Jonathan; Little, Crispin T.S.
Dodd M.S., Papineau D., Grenne T., Slack J.F., Rittner M., Pirajno F., O'Neil J., Little C.T.S. Evidence for early life in hydrothermal vent precipitates Nature 543, 60–64 (02 March 2017)

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Year Published: 2017

Leaching of trace elements from Pittsburgh coal mill rejects compared with coal combustion products from a coal-fired power plant in Ohio, USA

We investigated the leachability of elements from mill rejects from the high-sulfur, bituminous Upper Pennsylvanian Pittsburgh coal, using the synthetic groundwater leaching procedure (SGLP), long-term leaching (LTL), and the U.S. Environmental Protection Agency's (EPA's) toxicity characteristic leaching procedure (TCLP), and...

Jones, Kevin B.; Ruppert, Leslie F.
Jones, K.B., and Ruppert, L.F., 2017, Leaching of trace elements from Pittsburgh coal mill rejects compared with coal combustion products from a coal-fired power plant in Ohio, USA: International Journal of Coal Geology, v. 171, p. 130–141, https://doi.org/10.1016/j.coal.2017.01.002.

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Year Published: 2017

Geologic assessment of undiscovered oil and gas resources—Lower Cretaceous Albian to Upper Cretaceous Cenomanian carbonate rocks of the Fredericksburg and Washita Groups, United States Gulf of Mexico Coastal Plain and State Waters

In 2010, the U.S. Geological Survey (USGS) assessed Lower Cretaceous Albian to Upper Cretaceous Cenomanian carbonate rocks of the Fredericksburg and Washita Groups and their equivalent units for technically recoverable, undiscovered hydrocarbon resources underlying onshore lands and State Waters of the Gulf Coast region of the United States. This...

Swanson, Sharon M.; Enomoto, Catherine B.; Dennen, Kristin O. ; Valentine, Brett J.; Cahan, Steven M.
Swanson, S.M., Enomoto, C.B., Dennen, K.O., Valentine, B.J., and Cahan, S.M., 2017, Geologic assessment of undiscovered oil and gas resources—Lower Cretaceous Albian to Upper Cretaceous Cenomanian carbonate rocks of the Fredericksburg and Washita Groups, United States Gulf of Mexico Coastal Plain and State Waters: U.S. Geological Survey Open-File Report 2016–1199, 69 p., https://doi.org/10.3133/ofr20161199.

Filter Total Items: 174
February 29, 2016

Pre-measurement Tests in TRDI SxS Pro

In this video, we will highlight the necessary pre-measurement tests as part of a midsection ADCP measurement in TRDI SxS Pro. Note: Use of trade names is for descriptive purposes only, and does not imply endorsement by the USGS. For additional videos in this series, visit the following link: 

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February 29, 2016

Starting Edge Data Collection in TRDI SxS Pro

In this video, we will demonstrate how to collect a starting edge as part of a midsection ADCP measurement in TRDI SxS Pro. Note: Use of trade names is for descriptive purposes only, and does not imply endorsement by the USGS. For additional videos in this series, visit the following link: 

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February 29, 2016

Maine Cooperative Snow Survey

This video provides some background information and presents the general procedures associated with the Maine Cooperative Snow Survey.

 

Special thanks to Jim Caldwell with the USGS, Maine Office and Amber Whittaker and Dan Locke with the Maine Geological Survey for developing the scripts and story board, and serving as on-screen talent. 
 

February 29, 2016

Accounting for Under Ice Flow Angles in TRDI SxS Pro

In this video, we will discuss the specifics of accounting for under ice flow angles in the TRDI SxS Pro software. Note: Use of trade names is for descriptive purposes only, and does not imply endorsement by the USGS. For additional videos in this series, visit the following link: 

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February 29, 2016

Review of Midsection Method/Considerations with an ADCP

In this video, we will briefly review the midsection method and some considerations when using this method with an ADCP. Note: Use of trade names is for descriptive purposes only, and does not imply endorsement by the USGS. For additional videos in this series, visit the following link: 

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February 29, 2016

Field Notes in SVMobile for a Midsection ADCP Measurement

In this video, we will review the procedures for documenting an ADCP midsection measurement in SVMobile. Note: Use of trade names is for descriptive purposes only, and does not imply endorsement by the USGS. For additional videos in this series, visit the following link: https://www2.usgs.gov/

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February 29, 2016

Midsection, ADCP, section by section, TRDI SxS Pro

In this video, we will briefly review how you register an ADCP in the TRDI SxS Pro software, enabling it for use. Note: Use of trade names is for descriptive purposes only, and does not imply endorsement by the USGS. For additional videos in this series, visit the following link: https://www2.

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January 31, 2016

Midsection ADCP Measurements for Check Measurements

In this video, we will highlight the advantages of using an ADCP with the midsection method as a check measurement. Note: Use of trade names is for descriptive purposes only, and does not imply endorsement by the USGS. For additional videos in this series, visit the following link: https://www2.

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Scientist collects samples from a temporary wooden platform in a New Jersey salt marsh
December 31, 2015

USGS scientist collects samples in a New Jersey salt marsh

Caption: USGS scientist Zafer Defne measures water and sediment movement at Forsythe National Wildlife Refuge, New Jersey. Defne is co-author with USGS' Neil Ganju of a 2017 study on how to estimate coastal salt marshes' potential longevity, based on their sediment budgets and the ratio of open water to vegetation. Photo: Sandra Brosnahan, USGS

USGS' Owen Brenner wading with GPS backpack
December 31, 2015

Wading in the breach to precisely measure it

USGS employee Owen Brenner walks across the Fire Island wilderness breach carrying a GPS backpack that allows him to collect precise elevation data in the shallows.

Scientist sets up solar-powered research station amid Fire Island dunes
December 31, 2015

Setting up a science base in a barrier island wilderness

USGS scientist BJ Reynolds sets up a solar-powered, satellite-uplinked GPS base station in the Fire Island Wilderness Area to support detailed elevation surveys.

Monarchs
December 31, 2015

Monarchs

The Eastern, migratory population of monarch butterflies has declined by about 80 percent over the last decade.

 

Filter Total Items: 139