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

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.

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

Molecular Devices ImageXpress^† High-Content Imaging System that can generate more than 25,000 images in less than 5 hours of automated image acquisition.

Keith A. Loftin, USGS, is the lead scientist for algal and cyanobacterial toxins

Eosin-nigrosin staining of spermatozoa from common carp (Cyprinus carpio) testes collected from the Lake Mead National Recreation Area, Nevada

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.

U.S. Geological Survey (USGS) scientist working on data analysis of cyanotoxins in water samples

Microscopic video imaging is used for computerized analysis of sperm motility parameters

A USGS scientist prepares a sample to test the effect of antibiotics on denitrifying bacteria within a glove box. A glove box allows scientists to work with samples in an anaerobic (no oxygen) atmosphere, the conditions under which denitrification occurs.

Molecular Devices ImageXpress^† High-Content Imaging System

USGS scientists evaluating the nebulizer assembly in a mixed mode ionization source of a triple quadrupole mass spectrometer used to measure individual cyanotoxins

Tablet-enabled field forms have been developed to help coordinate field efforts, collect site information, GPS coordinates, photos, and control data collection.

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.

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

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

This image shows citizen scientists along with National Park Service personnel identifying invertebrates as part of the Dragonfly Mercury Project.

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