Captive Japanese quail (Coturnix japonica), and wheat seeds with (brown) and without (cream) pesticide coatings used to treat insect pests.
Images
All items in this gallery are considered public domain unless otherwise noted.
Captive Japanese quail (Coturnix japonica), and wheat seeds with (brown) and without (cream) pesticide coatings used to treat insect pests.
Biplot of principal component analysis of soil elemental composition data. Background and enriched samples are denoted. Colored points are from potentially enriched soils at mine sites, and black points are from unmined background sites. The effect of different elements on the analysis is shown by the rays, which are labeled to identify the elements.
Biplot of principal component analysis of soil elemental composition data. Background and enriched samples are denoted. Colored points are from potentially enriched soils at mine sites, and black points are from unmined background sites. The effect of different elements on the analysis is shown by the rays, which are labeled to identify the elements.
A cyanobacterial bloom in late fall at Ash River Harbor in Kabetogama Lake, Voyageurs National Park
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 at Kabetogama Lake in Voyageurs National Park
Cyanobacterial bloom in Kabetogama Lake with fall leaves in the background
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.
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.
An algal bloom near the Ash River Visitor Center at Kabetogama Lake, where visitors enjoy picnics and trails year-round.
Tablet-enabled field forms have been developed to help coordinate field efforts, collect site information, GPS coordinates, photos, and control data collection.
Tablet-enabled field forms have been developed to help coordinate field efforts, collect site information, GPS coordinates, photos, and control data collection.
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.
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.
Molecular Devices ImageXpress† High-Content Imaging System that can generate more than 25,000 images in less than 5 hours of automated image acquisition.
Molecular Devices ImageXpress† High-Content Imaging System that can generate more than 25,000 images in less than 5 hours of automated image acquisition.
U.S. Geological Survey (USGS) scientist working on data analysis of cyanotoxins in water samples
U.S. Geological Survey (USGS) scientist working on data analysis of cyanotoxins in water samples
USGS scientists evaluating the nebulizer assembly in a mixed mode ionization source of a triple quadrupole mass spectrometer used to measure individual cyanotoxins
USGS scientists evaluating the nebulizer assembly in a mixed mode ionization source of a triple quadrupole mass spectrometer used to measure individual cyanotoxins
Keith A. Loftin, USGS, is the lead scientist for algal and cyanobacterial toxins
Keith A. Loftin, USGS, is the lead scientist for algal and cyanobacterial toxins
Molecular Devices ImageXpress† High-Content Imaging System
Molecular Devices ImageXpress† High-Content Imaging System
Microscopic video imaging is used for computerized analysis of sperm motility parameters
Microscopic video imaging is used for computerized analysis of sperm motility parameters
Eosin-nigrosin staining of spermatozoa from common carp (Cyprinus carpio) testes collected from the Lake Mead National Recreation Area, Nevada
Eosin-nigrosin staining of spermatozoa from common carp (Cyprinus carpio) testes collected from the Lake Mead National Recreation Area, Nevada
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.
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.
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.
linkFathead 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.
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.
linkFathead 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
linkPond 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
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
linkPond 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
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
linkPassive 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
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
linkPassive 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
Mobile laboratory at the legacy fire-training area contaminated by PFAS derived from aqueous film-forming foams on Cape Cod, Massachusetts.
linkMobile 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.
Mobile laboratory at the legacy fire-training area contaminated by PFAS derived from aqueous film-forming foams on Cape Cod, Massachusetts.
linkMobile 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.