Environmental Health

Multimedia

One-stop collection of videos, photography, and audio. All items in this gallery are considered public domain unless otherwise noted.

Filter Total Items: 346
Winnewissa Falls viewing area
July 30, 2020

Visitors at Winnewissa Falls viewing area, Pipestone National Monument

Visitors at Winnewissa Falls in Pipestone National Monument

Satellite data derived cyanobacteria biomass estimate
February 11, 2020

Aerial image and satellite derived image of Florida Lakes

This image is a cropped rendition of  two aerial images that demonstrate satellite-derived cyanobacteria concentrations in surface waters from an area in Florida. The top image is true-color photograph, and the bottom image is from the Medium Resolution

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Cyanobacteria Bloom Magnitude Estimated for Florida and Ohio Lakes
December 4, 2019

Algal bloom magnitude in Florida lakes

(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. Bar height and color are proportional to annual bloom magnitude (in A) and annual area-

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Map of the study region showing the location of lakes in (A) Florida and (B) Ohio
December 4, 2019

Map of the study region showing the location of lakes in FL and OH

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.

The cyanobacteria Gleotrichia shown under a microscope from a water sample collected at Ek Lake Trail
August 23, 2019

The cyanobacteria Gleotrichia shown under a microscope

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.

Two scientists viewing data on a computer screen
February 12, 2019

Scientists reviewing instrument performance

Scientists reviewing data to determine instrument performance at the Algal Toxins Laboratory in Lawrence Kansas.

Captive Japanese quail (Coturnix japonica)
December 31, 2018

Captive Japanese quail (Coturnix japonica)

Captive Japanese quail (Coturnix japonica), and wheat seeds with (brown) and without (cream) pesticide coatings used to treat insect pests. 

man holding up two small sample bags of larval fish
September 30, 2018

Collecting larval fish for the Dragonfly Mercury Project

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 Dragonfly

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An algal bloom near the Ash River Visitor Center at Kabetogama Lake, where visitors enjoy picnics and trails year-round
September 25, 2018

An algal bloom near the Ash River Visitor Center at Kabetogama Lake

An algal bloom near the Ash River Visitor Center at Kabetogama Lake, where visitors enjoy picnics and trails year-round.

Algal bloom near the Ash River boat dock, a public access point for boating and fishing on Kabetogama Lake
September 25, 2018

Algal bloom near the Ash River boat dock

Algal bloom near the Ash River boat dock, a public access point for boating and fishing on Kabetogama Lake. Microcystin has been detected at this location and at nearby Sullivan Bay at concentrations exceeding recreational guidelines.