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: December 19, 2016
Status: Completed

The Release of Parent-reared Whooping Crane Colts into the Eastern Migratory Population

The Challenge: Whooping cranes have been successfully introduced using costume rearing techniques in either a direct autumn release or in an ultralight led migration from Wisconsin to Florida. In Florida, we have also released parent-reared whooping cranes. Not much is known about the learning that takes place in this K-selected species over the almost one year that the young whooping crane...

Date published: December 19, 2016
Status: Active

Implementing Cross Validation Approaches for Model Selection and Evaluating Goodness of Fit in Complex Hierarchical Models

It is (relatively) easy to construct complex hierarchical models for analysis of the North American Breeding Bird Survey (BBS), but deciding which model best describes population change is difficult.  We are developing methods for model selection for BBS and other important survey data sets, and using them to refine our estimates of population change from this important survey.

Date published: December 19, 2016
Status: Active

Population Change and Abundance of Black Ducks and Mallards in Eastern North America

The boreal forest in the northeastern United States and eastern Canada contains most of the breeding range of the American black duck (Anas rubripes).  We collaborate with scientists from the U. S. Fish and Wildlife Service to design and analyze waterfowl surveys in this large and often inaccessible area.

Date published: December 19, 2016
Status: Active

Design and Analysis of Surveys for Estimation of Temporal and Spatial Change in Animal Populations

Designing and analyzing large-scale animal surveys is an important focus of our research.  Although we conduct research into analysis methods for many surveys, the primary focus of this project is to conduct analyses and develop web-based summaries of data from the North American Breeding Bird Survey (BBS).

Date published: December 19, 2016
Status: Active

Hierarchical Models of Animal Abundance and Occurrence

The Challenge: Research goals of this project are to develop models, statistical methods, sampling strategies and tools for inference about animal population status from survey data. Survey data are always subject to a number of observation processes that induce bias and error. In particular, inferences are based on spatial sampling – we can only ever sample a subset of locations where species...

Date published: December 19, 2016
Status: Active

Spatial Capture-Recapture Models to Estimate Abundance and Density of Animal Populations

The Challenge: For decades, capture-recapture methods have been the cornerstone of ecological statistics as applied to population biology.  While capture-recapture has become the standard sampling and analytical framework for the study of population processes (Williams, Nichols & Conroy 2002) it has advanced independent of and remained unconnected to the spatial structure of the population...

Date published: December 19, 2016
Status: Active

Hierarchical Models for Estimation of Population Parameters

The Challenge: Much of wildlife research consists of the description of variation in data. Some of the variation results from spatial and temporal change in populations, while some results from biologically irrelevant sampling variation induced by the process of data collection. Distinguishing relevant from irrelevant variation is the first task of statistical analysis, but the job does not...

Date published: December 19, 2016
Status: Active

Development of Statistical Methods for Biological Applications

The Challenge: Wildlife science and management are guided by data, and it is unquestionably the case that the greatest success occurs when good data are analyzed by good statistical methods.

Date published: December 19, 2016
Status: Completed

Managing Free-Roaming Cats at the Patuxent Research Refuge

The Challenge: Free-roaming cats (Felis catus) are nonnative predators of small mammals, songbirds and gamebirds, reptiles, amphibians, and insects. They are also competitors of native predators and vectors for diseases to human and wildlife. The US Fish and Wildlife Service is authorized to remove cats from National Wildlife Refuges. Presently cat trapping on Refuge lands is conducted...

Date published: December 19, 2016
Status: Active

Characterization of Avian Hazards Following Chlorophacinone Use for Prairie Dog Control

The Challenge: Black-tailed prairie dogs are considered a keystone species for the prairie habitat. Many avian species are associated with black-tailed prairie dogs (Cynomys ludovicianus) in winter. Raptors feed on prairie dogs and non-raptor avian species forage within prairie dog colonies.  However prairie dogs are also considered agricultural pests. The first-generation anticoagulant...

Date published: December 16, 2016
Status: Active

Webcams - New York Water Science Center

Webcams have been installed at a number of locations in New York to allow you to view, in real time, the current river-stage conditions. 

Date published: December 14, 2016
Status: Active

Development of Computer Software for the Analysis of Animal Population Parameters

Biologists at USGS Patuxent, as well as cooperating agencies are constantly looking for new ways of answering questions about the status of animal populations and how animal populations change over time. To address these questions, data are collected on captures and or sightings of animals which can be used to estimate parameters which affect the population using legacy software. Over time,...

Contacts: James Hines
Filter Total Items: 16,206
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Year Published: 2019

Linking variability in climate to wetland habitat suitability: Is it possible to forecast regional responses from simple climate measures?

Temporary wetlands have value to both ecological and social systems. Interactions between local climate and the surrounding landscape result in patterns of hydrology that are unique to temporary wetlands. These seasonal and annual fluctuations in wetland inundation contribute to community composition and richness. Thus, predicting wetland...

Davis C; Miller D; Campbell Grant, Evan H.; Halstead, Brian; Kleeman, Patrick M.; Walls, Susan; Barichivich, William

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Year Published: 2019

Movement ecology of reintroduced migratory Whooping Cranes

No abstract available.

Teitelbaum, Claire S.; Converse, Sarah J.; Fagan, William F.; Mueller, Thomas
Mueller, T., Teitelbaum, C.S., Fagan, W.F., and Converse, S.J., 2018, Movement Ecology of Reintroduced Migratory Whooping Cranes, in French, J.B., Jr., Converse, S.J., and Austin, J.E., editors, Whooping Cranes: Biology and Conservation: San Diego, CA, Academic Press, Biodiversity of the World: Conservation from Genes to Landscapes, p. 217-238.

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Year Published: 2019

Reproduction and reproductive strategies relevant to management of Whooping Cranes ex situ

Due to the small population size (∼400 birds) and continuing threats to wild Whooping Cranes (Grus americana), an ex situ (captive) population is maintained to contribute to the recovery of the species. The goals of the captive breeding program are to provide opportunity for research and birds for reintroduction. However, reproduction...

Songsasen, Nucharin; Converse, Sarah J.; Brown, Megan
Songsasen, N., Converse, S.J., and Brown, M., 2018, Reproduction and Reproductive Strategies Relevant to Management of Whooping Cranes Ex Situ, in French, J.B., Jr., Converse, S.J., and Austin, J.E., editors, Whooping Cranes: Biology and Conservation: San Diego, CA, Academic Press, Biodiversity of the World: Conservation from Genes to Landscapes, p. 373-388.

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Year Published: 2019

Population dynamics of reintroduced Whooping Cranes

Because of the small size and restricted range of the Aransas-Wood Buffalo Population, reintroduction is a prominent element of the recovery effort to ensure persistence of Whooping Cranes (Grus americana). A fundamental objective of all Whooping Crane reintroduction efforts is the establishment of a self-sustaining population. Therefore...

Converse, Sarah J.; Servanty, Sabrina; Moore, Clinton T.; Runge, Michael C.
Converse, S.J., Servanty, S., Moore, C.T., and Runge, M.C., 2018, Population Dynamics of Reintroduced Whooping Cranes, in French, J.B., Jr., Converse, S.J., and Austin, J.E., editors, Whooping Cranes: Biology and Conservation: San Diego, CA, Academic Press, Biodiversity of the World: Conservation from Genes to Landscapes, p. 139-160.

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Year Published: 2019

Whooping Cranes past and present

The Whooping Crane (Grus americana), endemic to North America, is the rarest of all crane species. It is believed that in the early 1800s, the Whooping Crane was widespread in North America, though it was never very abundant. Whooping Crane numbers decreased precipitously as westward migration of Euro-American settlers converted ...

French, John B.; Converse, Sarah J.; Austin, Jane E.
French, J.B., Jr., Converse, S.J., and Austin, J.E., 2018, Whooping Cranes Past and Present, in French, J.B., Jr., Converse, S.J., and Austin, J.E., editors, Whooping Cranes: Biology and Conservation: San Diego, CA, Academic Press, Biodiversity of the World: Conservation from Genes to Landscapes, p. 3-16.

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Year Published: 2019

Reproductive failure in the Eastern Migratory Population: The interaction of research and management

The reintroduction of the Eastern Migratory Population of Whooping Cranes (Grus americana) has shown the most promise of any effort to date toward the establishment of a self-sustaining population. However, reproduction – including both nest success and chick survival – has been a major challenge. Here, we review the research and...

Converse, Sarah J.; Strobel, Bradley N.; Barzen, Jeb A.
Converse, S.J., Strobel, B.N., and Barzen, J.A., 2018, Reproductive Failure in the Eastern Migratory Population: The Interaction of Research and Management, in French, J.B., Jr., Converse, S.J., and Austin, J.E., editors, Whooping Cranes: Biology and Conservation: San Diego, CA, Academic Press, Biodiversity of the World: Conservation from Genes to Landscapes, p. 161-178.

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Year Published: 2019

India National Gas Hydrate Program Expedition 02 summary of scientific results: Evaluation of natural gas hydrate-bearing pressure cores

India’s National Gas Hydrate Program (NGHP) Expedition-02 was conducted in 2015 with the goal of investigating numerous locations that had been determined to be prospective for gas hydrate at high saturation in sand-rich reservoirs. Initial logging while drilling data revealed extensive sand-rich gas hydrate occurrences at multiple drill sites in...

Boswell, R.; Yoneda, J.; Waite, William F.

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Year Published: 2019

Evidence for shelf acidification during the onset of the Paleocene-Eocene Thermal Maximum

A transect of paleoshelf cores from Maryland and New Jersey contains a ~0.19 m to 1.61 m thick interval with reduced percentages of carbonate during the onset of the Paleocene-Eocene Thermal Maximum (PETM). Outer paleoshelf cores are barren of nannofossils and correspond to two minor disconformities. Middle paleoshelf cores contain a mixture of...

Bralower, Timothy J.; Kump, Lee R.; Robinson, Marci M.; Self-Trail, Jean M.; Lyons, Shelby L.; Babila, Tali; Ballaron, Edward; Freeman, Katherine H.; Hajek, Elizabeth A.; Rush, William; Zachos, James C.

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Year Published: 2019

In vivo effects of 17α-ethinylestradiol, 17B-estradiol and 4-nonylphenol on insulin-like growth-factor binding proteins (igfbps) in Atlantic salmon

Feminizing endocrine disrupting compounds (EDCs) affect the growth and development of teleost fishes. The major regulator of growth performance, the growth hormone (Gh)/insulin-like growth-factor (Igf) system, is sensitive to estrogenic compounds and mediates certain physiological and potentially behavioral consequences of EDC exposure. Igf...

Breves, Jason P.; Duffy, Tara A.; Einarsdottir, Ingibjörg E.; Björnsson, Björn Thrandur; McCormick, Stephen D.

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Year Published: 2019

A review of coastal management approaches to support the integration of ecological and human community planning for climate change

The resilience of socio-ecological systems to sea level rise, storms and flooding can be enhanced when coastal habitats are used as natural infrastructure. Grey infrastructure has long been used for coastal flood protection but can lead to unintended negative impacts. Natural infrastructure often provides similar services as well as added benefits...

Powell, Emily J.; Tyrrell, Megan C.; Milliken, Andrew; Tirpak, John M.; Staudinger, Michelle D.

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Year Published: 2019

Passive experimental warming decouples air and sediment temperatures in a salt marsh

Open top chambers (OTCs) are a commonly used passive warming technique in experimental warming studies. OTCs have been shown to be effective in multiple types of terrestrial systems, but their utility in wetland environments remains uncertain. The objective of this work was to evaluate the effectiveness of using OTCs to warm a temperate salt marsh...

Carey, Joanna C.; Kroeger, Kevin D.; Zafari, Babak; Tang, Jianwu

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Year Published: 2019

Isolation, characterization and molecular identification of a novel aquareovirus that infects the endangered fountain darter, Etheostoma fonticola

The fountain darter Etheostoma fonticola (FOD) is a federally endangered fish listed under the US Endangered Species Act. Here, we identified and characterized a novel aquareovirus isolated from wild fountain darters inhabiting the San Marcos River. This virus was propagated in Chinook salmon embryo (CHSE)-214, rainbow trout gonad-2 and...

Iwanowicz, Luke R.; Iwanowicz, Deborah D.; Adams, Cynthia R.; Lewis, Teresa; Brandt, Tom; Sanders, Lakyn R.; Cornman, Robert S.

Filter Total Items: 1,774
Ice-like gas hydrates under capping rock encrusted with mussels on the sea floor
December 31, 2017

Ice-like gas hydrates under capping rock encrusted with mussels

Ice-like gas hydrates under capping rock encrusted with mussels on the sea floor of the northern Gulf of Mexico.

Two maps; the left hand one shows brown land, blue water, and red arrows. The right hand one shows colored survey tracklines
December 31, 2017

Maps with key features and shaded relief of the study area

Left: Key features in and around the Gulf of Alaska. A black rectangle outlines our 2016 study area along the Queen Charlotte-Fairweather fault. Red arrows indicate relative tectonic plate motions. Right: A shaded relief map of the 2016 study area. Rainbow colors show seafloor depths acquired by the USGS in 2015 and 2016. Red indicates shallower depths. Purple zigzag lines

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Three panels with bright colors showing underwater bathymetry features
December 31, 2017

Perspective views of multibeam bathymetry data acquired by the USGS

Perspective views of multibeam bathymetry data acquired by the USGS aboard the R/V Medeia. Shallower depths in red. Arrows point to the distinct line in the seafloor associated with the Queen Charlotte-Fairweather fault.

A scientist explains an illustration on a poster presentation to a congressman in a suit
December 31, 2017

Elizabeth Pendleton describes USGS work to map the Mass. seafloor

Elizabeth Pendleton describes USGS work to map the Massachusetts seafloor to State Senator Viriato “Vinny” deMacedo.

Steve Suttles and Neil Ganju surveying the position of a deployed oceanographic platform in Great South Bay, NY
December 31, 2017

Scientific Research in Great South Bay, NY

Steve Suttles and Neil Ganju surveying the position of a deployed oceanographic platform in Great South Bay, NY