Images

A visitor from the public learns about amphibians at the Northeast Amphibian Research and Monitoring Initiative's booth at the 2023 Earth Day Celebration and Open House at USGS Eastern Ecological Science Center - Leetown Research Laboratory.

USGS Eastern Ecological Science Center staff prepare for public visitors at the Northeast Amphibian Research and Monitoring Initiative booth, part of the 2023 Earth Day Celebration and Open House at the Leetown Research Laboratory.

Stonefly larvae, a type of aquatic macroinvertebrate. These individuals were collected for display during the 2023 Earth Day Celebration and Open House at USGS Eastern Ecological Science Center - Leetown Research Laboratory. 

In April, USGS scientist Alexis Weinnig and other scientists collected eDNA during a deep-sea exploration aboard the NOAA Ship Okeanos Explore as part of the NOAA Ocean Exploration expedition, EX2301. During the trip, a Remotely Operated Vehicles (ROV) collected water that was filtered on board the ship for eDNA left in the water by nearby organisms.

Alexis Weinnig, USGS Biologist, and NOAA Scientist Ashley Marranzino work together to filter seawater for eDNA from a CTD rosette while aboard the NOAA Ship Okeanos Explorer. eDNA will allow for the detection of biology in the surrounding seawater.

Screenshot of EcoSHEDS home page, a USGS web application. EcoSHEDS is a collection of Spatial Hydro-Ecological Data Systems (SHEDS) designed to improve our understanding of stream ecosystems.

Toads (Anaxyrus sp.) lay their eggs in long thin strands, which helps distinguish them from other anuran species which may lay their eggs singly or in round clusters.

These are the eggs of the southern leopard frog (Lithobates sphenocephalus). Leopard frog eggs are laid in tight clusters, and they have contrasting colors of black on the upper side and white on the underside.

Biologists search for Red Knots on the mudflats at Gray's Harbor and decide where to set the nets. Photo credit: Zak Pohlenm, USFWS

EESC facilities and Fish Passage Design & Analysis team members constructed wooden Denil fishway baffles for the 2023 D-Cylinder study in Conte's Fish Passage Complex

Blotchy bass syndrome (BBS) is the presence of hyperpigmentation (melanosis) on the external surface of black basses. This condition has received increased attention from anglers and resource managers in recent years and is a popular topic of discussion and reporting on angling websites and blogging platforms.

A biologist installs a passive integrated transponder (PIT) tag into a brook trout

Biologist prepare brook trout for a study of environmental DNA (eDNA)          

Biologists photograph brook trout as part of a study on environmental DNA (eDNA)

A biologist measures the length of a brook trout as part of a study on environmental DNA (eDNA).

Preparing test diet to determine the toxicity of rodenticide to non-target predatory birds in a effort to mitigate risk

Alex Haro standing next to the USGS table display the AFS SNE Chapter Meeting 

Canada Geese using a small retention pond near a commercial poultry facility.           

Beautiful, early morning sunrise of a reservoir located at the Fish Health Lab in Kearneysville, WV.  This photo was taken during a bird walk to participate in the nationwide Christmas Bird Count conducted by eBird.

Diagram depicting the sources of drinking water (surface water and groundwater), known and potential sources of contaminants introduced to drinking water (urban and agricultural land use, runoff, infiltration, waste, and wastewater sources) and routes of potential exposure from the point of use (drinking water in the home, at work, and from bottled water). 

A steel support structure for the upcoming 2023 D-Cylinder fish ladder study installed in the East Flume of the Conte Research Lab's Fish Passage Complex by USGS employees Rolando (Marty) Garcia and Aaron Heisey.