The zebrafish developmental cardiovascular toxicity high-content screening assay uses a 384-well plate format to maximize number of treatments and replicates possible on each plate.
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TZebrafish developmental cardiovascular toxicity high-content screen
The zebrafish developmental cardiovascular toxicity high-content screening assay uses a 384-well plate format to maximize number of treatments and replicates possible on each plate.
Molecular Devices ImageXpress† High-Content Imaging System
High-Content Screening Laboratory — Columbia, Missouri. Molecular Devices ImageXpress† High-Content Imaging System
High-Content Screening Laboratory — Columbia, Missouri. Molecular Devices ImageXpress† High-Content Imaging System
Ozark Spring - a perennial spring in Phelps County, Missouri
Ozark Spring is a perennial spring in northern Phelps County, Missouri. It generates a rill that flows into Spring Creek which flows into the Gasconade River. It provides year-round water to livestock in the area.
Ozark Spring is a perennial spring in northern Phelps County, Missouri. It generates a rill that flows into Spring Creek which flows into the Gasconade River. It provides year-round water to livestock in the area.
Asian Carp Removal in Missouri
In 2018, USGS and partners completed an incredible feat against a harmful aquatic invasive species when over 240,000 pounds of invasive Silver Carp and Bighead Carp were removed from Creve Coeur Lake in Maryland Heights, Missouri.
In 2018, USGS and partners completed an incredible feat against a harmful aquatic invasive species when over 240,000 pounds of invasive Silver Carp and Bighead Carp were removed from Creve Coeur Lake in Maryland Heights, Missouri.
Greg Delzer Talking with the Local Press Regarding the AEM Flight Plan
USGS Scientist, Greg Delzer, talking with the local press regarding the AEM flight plan and details on what USGS and others will be collecting and analyzing.
USGS Scientist, Greg Delzer, talking with the local press regarding the AEM flight plan and details on what USGS and others will be collecting and analyzing.
RESOLVE bird used to collect airborne electromagnetic data
USGS team of scientists were on site before the survey to help answer questions and go over last minute flight and data collection details. (Photo includes individuals from USGS: Iowa/Illinois Water Science Center, Dakota Water Science Center, Denver Crustal Geophysics Group, Office of Communication, and Branch of Geophysics)
USGS team of scientists were on site before the survey to help answer questions and go over last minute flight and data collection details. (Photo includes individuals from USGS: Iowa/Illinois Water Science Center, Dakota Water Science Center, Denver Crustal Geophysics Group, Office of Communication, and Branch of Geophysics)
Pilot and Crew Discussing Flight Plan for collecting AEM Data
Helicopter pilot and crew discussing flight plan and data collection before lifting off.
Helicopter pilot and crew discussing flight plan and data collection before lifting off.
Helicopter Lifting Off to Start a Data Collection Run for EM Data
Helicopter lifting off to start a data collection run.
Helicopter lifting off to start a data collection run.
Samplers used for sampling hydrophilic organic chemicals from water
Passive Sampling Research—Columbia, Missouri. The polar organic chemical integrative sampler (POCIS - on the left) and semipermeable membrane devices (SPMDs - on the right) samplers are used for sampling hydrophilic organic chemicals from water. The SPMDs sampler can also be deployed for air sampling.
Passive Sampling Research—Columbia, Missouri. The polar organic chemical integrative sampler (POCIS - on the left) and semipermeable membrane devices (SPMDs - on the right) samplers are used for sampling hydrophilic organic chemicals from water. The SPMDs sampler can also be deployed for air sampling.
Petis Bois model
A perspective model of the morphology and geologic framework near Petit Bois Island showing the relationships between seafloor features and the subsurface. The barrier islands rest on the island plaftorm. Petis Bois Pass and offshore shoals are clearly visible from the acoustic surveys. The bathymetry, sidescan sonar, and sediment
A perspective model of the morphology and geologic framework near Petit Bois Island showing the relationships between seafloor features and the subsurface. The barrier islands rest on the island plaftorm. Petis Bois Pass and offshore shoals are clearly visible from the acoustic surveys. The bathymetry, sidescan sonar, and sediment
A customized extraction system used for collection and extraction
Environmental Chemistry Laboratory — Columbia, Missouri. Customized extraction system
Environmental Chemistry Laboratory — Columbia, Missouri. Customized extraction system
Louisiana coastal wetland change rates over time
Graph of land area change rate in coastal Louisiana from 1932–2016. The red line approximates the long-term land area change rate. 95 out of 100 statistical analyses would produce a very similar trend (dotted blue lines). Credit: USGS
Graph of land area change rate in coastal Louisiana from 1932–2016. The red line approximates the long-term land area change rate. 95 out of 100 statistical analyses would produce a very similar trend (dotted blue lines). Credit: USGS
Cuban treefrogs have leaped into Louisiana
Non-native Cuban treefrogs have established a breeding population in New Orleans, Louisiana, the first such population on the U.S. mainland outside Florida. The treefrogs were discovered at the Audubon Zoo shortly after a shipment of palm trees from Florida were planted in the zoo's elephant enclosure in 2016.
Non-native Cuban treefrogs have established a breeding population in New Orleans, Louisiana, the first such population on the U.S. mainland outside Florida. The treefrogs were discovered at the Audubon Zoo shortly after a shipment of palm trees from Florida were planted in the zoo's elephant enclosure in 2016.
Microscopic video imaging is used for computerized analysis of sperm m
Photomicroscopy and Flow Cytometry Laboratory — Lafayette, Louisiana. Microscopic video imaging is used for computerized analysis of sperm motility parameters
Photomicroscopy and Flow Cytometry Laboratory — Lafayette, Louisiana. Microscopic video imaging is used for computerized analysis of sperm motility parameters
Hurricane Harvey Inundates Gulf Coast
Hurricane Harvey made landfall on the Gulf Coast of Texas as a Category 4 hurricane on the night of August 25, 2017. It then stalled over southeastern Texas as a tropical storm and continued to creep northeast over Louisiana.
Hurricane Harvey made landfall on the Gulf Coast of Texas as a Category 4 hurricane on the night of August 25, 2017. It then stalled over southeastern Texas as a tropical storm and continued to creep northeast over Louisiana.
Map shows early wetland losses in red, recent losses in purple
This map shows the historic trend in wetland losses, with early losses in red and the most recent ones in purple.
This map shows the historic trend in wetland losses, with early losses in red and the most recent ones in purple.
Louisiana's Coastal Wetland Loss Rate Continues to Slow
An aerial view of southeast Louisiana coastal marshes.
An aerial view of southeast Louisiana coastal marshes.
Restoration projects help some Louisiana coastal wetlands rebuild
Satellite images of the same wetland taken in 2008 and 2016 show a wetland restoration project has produced some gains in marsh area.
Satellite images of the same wetland taken in 2008 and 2016 show a wetland restoration project has produced some gains in marsh area.
Changing vegetation in the Delta 2016-2017
Chart showing changes in vegetation density in the Mississippi River delta in Louisiana, May 2015-May 2016. From a USGS Open File Report published in July 2017 by co-authors Elijah Ramsey III and Amina Rangoonwala,
Chart showing changes in vegetation density in the Mississippi River delta in Louisiana, May 2015-May 2016. From a USGS Open File Report published in July 2017 by co-authors Elijah Ramsey III and Amina Rangoonwala,
Collecting Sturgeon Free Embryos
A biological science technician collects pallid sturgeon free embryos from the sampling nets in the experimental streams at the Columbia Environmental Research Center.
A biological science technician collects pallid sturgeon free embryos from the sampling nets in the experimental streams at the Columbia Environmental Research Center.
Preparing Swim Chambers
A biological science technician prepares the swim chambers to assess the swimming abilities of young pallid sturgeon.
A biological science technician prepares the swim chambers to assess the swimming abilities of young pallid sturgeon.