Toxic Substances Hydrology Program

Multimedia

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

Filter Total Items: 211
Image of numerous aquatic macroinvertebrate taxa in a tray of water
June 4, 2020

Numerous aquatic macroinvertebrate taxa collected from a stream

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

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. 

Dark sand surrounding the entrance to a harbor; a caution sign is featured in the foreground
September 30, 2018

Photograph of the entrance to Grand Traverse Bay Harbor

Photograph of the entrance to Grand Traverse Bay Harbor, located 8 kilometers downdrift of the spoils pile. Migration of the dark-colored stamp sands (moving from left to right) has buried the original beach, overtopped the wall, and partially blocked the channel. The high sedimentation rate requires frequent dredging to maintain navigation, which for the 2018 survey was

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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.

Using the 384-well plate format, a single zebrafish embryo is tested in each well
September 24, 2018

Using the 384-well plate format, a single zebrafish embryo is tested

Using the 384-well plate format, a single zebrafish embryo is tested in each well. This is an example of a 72 hour post fertilization fli1:egfp zebrafish (3 millimeters long) imaged under a fluorescein isothiocyanate (FITC) filter.