Images

Tissue sections are mounted on glass slides, stained and examined with a microscope that magnifies cellular details up to 2,000 times with brightfield or fluorescence imaging. Microscopes are used in our research to understand the pathological changes caused by infectious agents such as bacteria, fungi, parasites and viruses.

Andy Reeves, in the USGS Alaska Science Center Molecular Ecology Laboratory, preparing to sequence influenza A viruses collected from wild birds sampled in Alaska.

Andy Reeves, USGS Alaska Science Center, prepares to sequence influenza A viruses in the Molecular Ecology Laboratory. The samples were collected from wild birds in Alaska.

Andy Reeves, in the USGS Alaska Science Center Molecular Ecology Laboratory, preparing to sequence influenza A viruses collected from wild birds sampled in Alaska.

USGS scientist Amy Simonson making a stream flow measurement in the Peconic River on Long Island, New York

Weir  or low dam at the Peconic River

Standard design broad crested weir control for streamgage on the Millstone River in NJ.

Non-native Cuban treefrogs have established a breeding population in New Orleans, Louisiana, the first such population on the U.S. mainland outside Florida. The treefrogs were discovered at the Audubon Zoo shortly after a shipment of palm trees from Florida were planted in the zoo's elephant enclosure in 2016.

Arctica islandica shells have been sectioned with a saw and embedded in epoxy for further analysis.

Still-image from video camera atop the Dream Inn looks eastward over Main Beach and boardwalk in Santa Cruz, CA.

Quantitative Polymerase Chain Reaction (qPCR) assay for the detection of Renibacterium salmoninarum DNA. A nucleic acid sequence detection system is shown.

Quantitative polymerase chain reaction (qPCR) assay for the detection of Renibacterium salmoninarum DNA. Observation of qPCR results on the screen of a sequence detection system.

Biologist, John T. makes a high water measurement at stream gage 03145484 Raccoon Creek near Granville, OH. High water measurements ensure accurate flood forecasting by NOAA for downstream citizens and property owners. These forecasts can help people prepare for the rising waters, help reduce property damages, and most importantly save lives. 

Jemez Falls located in the Jemez Mountains near Santa Fe, New Mexico

Figure 1. Photographs of commercial, expanded vermiculite ore from the four major historical sources: Libby, Montana; Palabora, South Africa; Louisa, Virginia; and Enoree, South Carolina. Scale of the rightmost image in each set is the same as the left image unless otherwise labeled.

This is a downstream view of the Herring River from the Chequessett Neck Road dike. The site was visited on November 6, 2017 to collect water-quality samples. An automated sampler inside the gage house was used to collect samples over an approximately 24-hour period and combine them into two bottles.

Northeast Region Photo Contest Winner | Oct. 2019 | USGS at Work
Water quality sampling on the Delaware River at Montague, NJ (01438500)

A harmful algal bloom in a New York lake

Saltwater Interface Mapping using electromagnetic sounding - Long Island

Seafloor photograph of a spider crab, sediment, rocks, taken by the Woods Hole Coastal and Marine Science Center SeaBOSS during a deployment off the R/V Connecticut in Long Island Sound

Long Island Sound Survey mapping team.  This project is a collaboration of several agencies and institutions including Univ of Connecticut, Univ of New Haven, Connecticut Department of Energy and Environmental Protection, NOAA, LDEO, USGS