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Eastern Ecological Science Center images.

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A small brownish bird with a pink bill in the hands of a person that found the bird during a bird collision survey in Newark,
A banded Field Sparrow that was found as part of a bird collision survey at Prudential Tower in Newark, New Jersey in 2020.
A banded Field Sparrow that was found as part of a bird collision survey at Prudential Tower in Newark, New Jersey in 2020.
A Black-throated Blue Warbler at a stopover site along the Patuxent River
Black-throated Blue Warbler
Black-throated Blue Warbler
Black-throated Blue Warbler

A Black-throated Blue Warbler at a stopover site along the Patuxent River.  Photo courtesy of Michael Lutmerding of the EESC at Patuxent Research Refuge in Laurel, MD.

A Black-throated Blue Warbler at a stopover site along the Patuxent River.  Photo courtesy of Michael Lutmerding of the EESC at Patuxent Research Refuge in Laurel, MD.

Golden-winged Warbler at a stopover site during fall migration
Golden-winged Warbler
Golden-winged Warbler
Golden-winged Warbler

Golden-winged Warbler at a stopover site during fall migration                 

Golden-winged Warbler at a stopover site during fall migration                 

Atlantic Menhaden feeding in the Chesapeake Bay
Atlantic Menhaden
Atlantic Menhaden
Atlantic Menhaden

Atlantic Menhaden feeding in the Chesapeake Bay in Chesapeake Beach, MD, USA.. Photo by Mikey Lutmering.

Atlantic Menhaden feeding in the Chesapeake Bay in Chesapeake Beach, MD, USA.. Photo by Mikey Lutmering.

A pair of box turtles encountered during a survey
Box turtles in situ
Box turtles in situ
Box turtles in situ

A pair of box turtles encountered during a survey at the Patuxent Research Refuge in Laurel, MD

A pair of box turtles encountered during a survey at the Patuxent Research Refuge in Laurel, MD

Andy Royle processing a box turtle
Patuxent box turtle study
Patuxent box turtle study
Patuxent box turtle study

Andy Royle processing a box turtle.

Category: Ecosystems, Field Work, Herps, Research

Andy Royle processing a box turtle.

Category: Ecosystems, Field Work, Herps, Research

Eastern Box Turtle on path in forest
Eastern Box Turtle in Inwood, WV
Eastern Box Turtle in Inwood, WV
Eastern Box Turtle in Inwood, WV

Eastern Box Turtle in Inwood, WV. Eastern Box Turtles are common in this region, but are threatened or listed as species of special concern in some New England states.

Eastern Box Turtle in Inwood, WV. Eastern Box Turtles are common in this region, but are threatened or listed as species of special concern in some New England states.

Blue catfish specimen
Blue catfish specimen
Blue catfish specimen
Blue catfish specimen

Blue catfish (Ictalurus furcatus) are an important aquatic invasive species throughout many Chesapeake Bay tributaries.  Scientists from the EESC are working with federal, state, and regional partners to assess the potential impacts of blue catfish on native fauna and important fisheries resources throughout the region.

Blue catfish (Ictalurus furcatus) are an important aquatic invasive species throughout many Chesapeake Bay tributaries.  Scientists from the EESC are working with federal, state, and regional partners to assess the potential impacts of blue catfish on native fauna and important fisheries resources throughout the region.

Field staff measuring trail conditions such as soil loss at a permanent trail transect.
Trail Transect to Measure Soil Loss
Trail Transect to Measure Soil Loss
Trail Transect to Measure Soil Loss

Field staff are establishing a permanent transect to measure changes in trail conditions along this trail.  A self-leveling laser was used to set up the transect and the diagram illustrates how vertical measurements are collected to compute cross-sectional area soil loss measures.  

Field staff are establishing a permanent transect to measure changes in trail conditions along this trail.  A self-leveling laser was used to set up the transect and the diagram illustrates how vertical measurements are collected to compute cross-sectional area soil loss measures.  

A field of large boulders
Boulder Field
Boulder Field
Boulder Field

Boulder Field of Hickory Run State Park in Pennsylvania, taken in 2020 by Andrea Ostroff.        

Boulder Field of Hickory Run State Park in Pennsylvania, taken in 2020 by Andrea Ostroff.        

Heather Walsh performing a necropsy on a young of the year smallmouth bass from the Susquehanna River.
Necropsy of a young of the year smallmouth bass
Necropsy of a young of the year smallmouth bass
Necropsy of a young of the year smallmouth bass

As part of a fish health assessment, Heather Walsh is performing a necropsy on a young of the year smallmouth bass from the Susquehanna River.  Previously, young of the year smallmouth bass from the Susquehanna River drainage experienced fish kills and lesions.  This work was conducted to follow-up on the health status of these bass populations.

As part of a fish health assessment, Heather Walsh is performing a necropsy on a young of the year smallmouth bass from the Susquehanna River.  Previously, young of the year smallmouth bass from the Susquehanna River drainage experienced fish kills and lesions.  This work was conducted to follow-up on the health status of these bass populations.

Filtering water in Rock Creek Park
Filtering water in Rock Creek Park
Filtering water in Rock Creek Park
Filtering water in Rock Creek Park

This is Drew Kellogg, a 2019 USGS summer hire filtering water in Rock Creek Park for eDNA analyses. The eDNA will be screened for the presence of aquatic invertebrates. 

This is Drew Kellogg, a 2019 USGS summer hire filtering water in Rock Creek Park for eDNA analyses. The eDNA will be screened for the presence of aquatic invertebrates. 

Brendan Crossman takes a measurement with a salinity probe in a wetland adjacent to a forest.
Measuring salinity as part of a vegetation survey
Measuring salinity as part of a vegetation survey
Measuring salinity as part of a vegetation survey

Brendan Crossman measures porewater salinity in a vegetation plot situated on a survey transect from the wetland into the adjacent upland forest.

A colored map showing intensity of search, researcher movements, and box turtle capture locations.
Total search effort for box turtles by USGS EESC in 2020
Total search effort for box turtles by USGS EESC in 2020
Total search effort for box turtles by USGS EESC in 2020

Numerical values and colors represent the total frequency of observer passes through the center of each grid cell during the 60 d of survey activity (1–4 surveyors each survey day) by USGS EESC in 2020. For example, a value of 40 would mean that a given grid cell was searched 40 times during the season.

Numerical values and colors represent the total frequency of observer passes through the center of each grid cell during the 60 d of survey activity (1–4 surveyors each survey day) by USGS EESC in 2020. For example, a value of 40 would mean that a given grid cell was searched 40 times during the season.

Health Assessment on northern snakehead fish
Health Assessment on northern snakehead fish
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. 

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. 

Adult silver phase American Eel
Adult silver phase American Eel
Adult silver phase American Eel
Adult silver phase American Eel

A silver-phase American Eel in a northeastern river begins migrating downstream to the ocean to spawn in the Sargasso Sea. The migration can span hundreds of kilometers in freshwater rivers and thousands of kilometers at sea.

A silver-phase American Eel in a northeastern river begins migrating downstream to the ocean to spawn in the Sargasso Sea. The migration can span hundreds of kilometers in freshwater rivers and thousands of kilometers at sea.

Release of radio-tagged silver phase American Eel
Release of radio-tagged silver phase American Eel
Release of radio-tagged silver phase American Eel
Release of radio-tagged silver phase American Eel

Radio-tagged silver phase American Eels being released for a CAFRL telemetry study of downstream passage of eels at hydroelectric dams on the Shetucket River, Connecticut.

Radio-tagged silver phase American Eels being released for a CAFRL telemetry study of downstream passage of eels at hydroelectric dams on the Shetucket River, Connecticut.

Eel airlift bypass prototype
Eel airlift bypass prototype
Eel airlift bypass prototype
Eel airlift bypass prototype

Prototype design of an airlift developed at CAFL to transport downstream migrant eels through a bypass pipe and away from turbine intakes. The airlift design passes eels as well as a conventional siphon or gravity pipe.

Prototype design of an airlift developed at CAFL to transport downstream migrant eels through a bypass pipe and away from turbine intakes. The airlift design passes eels as well as a conventional siphon or gravity pipe.

Several people sit at a table under a wooden roof banding birds.
Old Banding Station
Old Banding Station
Old Banding Station

This is the banding station used by BBL for years before the recent upgrades. 

This is the banding station used by BBL for years before the recent upgrades. 

Densmore uses ultrasound
Densmore uses ultrasound
Densmore uses ultrasound
Densmore uses ultrasound

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

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

Eel electrosensitivity test apparatus
Eel electrosensitivity test apparatus
Eel electrosensitivity test apparatus
Eel electrosensitivity test apparatus

Apparatus used to test the sensitivity of eels to low-voltage pulsed DC electric fields. Knowledge of sensitivity of eels to electric fields enables development of behavioral barriers that use electricity to guide eels away from turbine intakes.

Apparatus used to test the sensitivity of eels to low-voltage pulsed DC electric fields. Knowledge of sensitivity of eels to electric fields enables development of behavioral barriers that use electricity to guide eels away from turbine intakes.

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