Images

Microscopic appearance of normal and melanistic skin in fish from Chesapeake Bay watershed.

Map of the migratory pathway of glaucous gulls from Alaska to Russia and down Pacific US coastline

White barn in a rural setting in North Dakota.

A well pump in rural North Dakota.

Visitors at Winnewissa Falls in Pipestone National Monument

Researchers instruct volunteers on how to collect dragonfly larvae in Glacier NP as a part of the Dragonfly Mercury Project.

Benthic macroinvertebrate taxa collected from Straight Run, Tioga County, Pennsyvania, USA. 

This image is a cropped rendition of  two aerial images that demonstrate satellite-derived cyanobacteria concentrations in surface waters from an area in Florida.

Picture of a woman fly fishing at Black Bay National Wildlife Refuge in Virginia.  Credit: U.S. Fish and Wildlife Service.

Lab Instrumentation used for target analyses at the OGRL at the KS WSC. Image is of part of the Instrument Laboratory. 

A three year study was conducted in seasonal wetlands to determine if a deep and shallow water pool resulted in a reduction of methylmercury in caged fish and surface water.

Graphical depiction of a seasonal wetland engineered to have a deeper pool and more open water on the downstream side of the wetland. This management strategy was tested during a 3-year period to determine if it resulted in a reduction of methylmercury in caged fish and surface water.

(A). Algal bloom magnitude in Florida lakes in 2011 before normalization and (B) after normalization by lake surface area. Area-normalized magnitude (km⁻²) of selected lakes provided as part of bar labels in parenthesis.

Map of the study region showing the location of lakes in (A) Florida and (B) Ohio. In total, 135 lakes in Florida and 21 lakes in Ohio, were resolvable with the full resolution MERIS data and are used in this study. Land and lakes are shown in gray and blue colors respectively.

This picture shows MJF in Reston working with his team on work planning guidance for the scientists funded by the Ecosystems Mission Area, Environmental Health Program

This photo show runoff from an experimental plot through a weir.  Scientists carried out the study at the Oklahoma State University South Central Research Station in Chickasha, Oklahoma. Its a good example of rain induced runoff. 

Graphical depiction of three sources of variation that can affect accumulation of methylmercury in black rails: habitat (sediment) biogeochemistry, food web structure and biomagnification, and diet composition. Methylmercury moves from the sediment into the wetland food web and accumulates in rail tissues.

The cyanobacteria Gleotrichia shown under a microscope from a water sample collected at Ek Lake Trail, a popular recreational area in Kabetogama Lake where algal blooms frequently occur. Gleotrichia  can produce microcystin.

An algal bloom forming in Kabetogama Lake near Kabetogama Visitor Center, Voyageurs National Park

Groundwater sampling along the north well transect at the Bemidji site.

Collecting a sediment core with the freezing drive shoe technology on a hollow stem auger drill rig at Bemidji oil spill site.