Images

A cyanobacterial bloom in late fall at Ash River Harbor in Kabetogama Lake, Voyageurs National Park

Cyanobacterial bloom at Kabetogama Lake in Voyageurs National Park

Cyanobacterial bloom in Kabetogama Lake with fall leaves in the background

Glen Canyon Dam jet tubes releasing water into the Colorado River for a November 2018 high flow experiment. The increase in flow of the Colorado River downstream of the dam mobilizes sand at the bottom of the river and that sand rebuilds sandbars in Grand Canyon.

Remote Camera, 30-mile Camp (River MIe 30.7)

Panoramic view of scientists in boat on Hells Canyon Reservoir, Idaho

Particulate matter captured on a quartz fiber filter at the Mercury Research Laboratory.

Native birds resting on marker buoys in Brownlee Reservoir, Idaho.

Draining overlying water from sedimentation sampler at Brownlee Reservoir, Idaho.

Grand Teton National Park in autumn.

Fathead minnows (Pimephales promelas) in an exposure tank housed inside of a mobile laboratory at the legacy fire-training area contaminated by PFAS derived from aqueous film-forming foams on Cape Cod, Massachusetts.

Pond mussel (Ligumia subrostrata) in an exposure tank housed inside of a mobile laboratory at the legacy fire-training area contaminated by PFAS derived from aqueous film-forming foams on Cape Cod, Massachusetts

Mobile laboratory deployed at the legacy fire-training area contaminated by per- and polyfluoroalkyl substances (PFAS) derived from aqueous film-forming foams on Cape Cod, Massachusetts. 

Passive samplers in an exposure tank housed inside of a mobile laboratory at the legacy fire-training area contaminated by PFAS derived from aqueous film-forming foams on Cape Cod, Massachusetts

A large airtanker dropped fire suppressant on the ground to help stop the spread of the Eyrie Fire in Boise, Idaho.

Between 2009 and 2018, scientists conducted a national scale assessment of mercury accumulation in the National Park System using dragonfly larvae as biosentinels (species that accumulate a pollutant in their tissues as an index of exposure to other organisms without significant adverse effects to the biosentinel) through a citizen science network called the Dragonf

Photovoltaic, or solar, cells array at the Ivanpah Solar Power Facility in the Mojave Desert and a wind energy facility in the Northeastern United States.

A completed restoration field trial site just after installation. Half of the site is seeded, and the other half had plants and weed cloth (white fabric) installed.

These workers are planting seedlings as part of the restoration field trial network. Each garden in the network is examining seedlings and seeds in conjunction with restoration treatments to better und

View of a recently installed Restoration Field Trial Network site in the rangelands of Northern Arizona.

A Pallid bat (Antrozous pallidus) is outfitted with a radio transmitter to help lead us to its roost. The transmitter is attached with a temporary adhesive that will wear off within around 2 weeks, about as long as the battery life of the transmitter lasts.