USGS fish biologists launch at sunset on the Upper Missouri River for a night of sampling for larval pallid sturgeon.
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Boat Launch for Night Sampling
USGS fish biologists launch at sunset on the Upper Missouri River for a night of sampling for larval pallid sturgeon.
Ichthyoplankton Sample
Typical contents of a net deployment showing larval fish, possibly pallid sturgeon.
Typical contents of a net deployment showing larval fish, possibly pallid sturgeon.
ADCP Boat
A US Geological Survey hydroacoustic survey boat measures velocity profiles on the Upper Missouri River.
A US Geological Survey hydroacoustic survey boat measures velocity profiles on the Upper Missouri River.
ADCP Data Review
Research hydrologist Dr. Susannah Erwin and hydrologic technician Brian Anderson inspect ADCP data on the Upper Missouri River.
Research hydrologist Dr. Susannah Erwin and hydrologic technician Brian Anderson inspect ADCP data on the Upper Missouri River.
Pre-Sample Briefing
Pre-deployment briefing for the Upper Missouri River Pallid Sturgeon Drift Study. Fish biologists and physical scientists from Montana Fish Wildlife and Parks, US Geological Survey, U.S. Fish and Wildlife Service, University of Montana, Nebraska Game and Parks Commission, and US Army Corps of Engineers go over the sample design and assignments.
Pre-deployment briefing for the Upper Missouri River Pallid Sturgeon Drift Study. Fish biologists and physical scientists from Montana Fish Wildlife and Parks, US Geological Survey, U.S. Fish and Wildlife Service, University of Montana, Nebraska Game and Parks Commission, and US Army Corps of Engineers go over the sample design and assignments.
Distribution of Free Embryos to Boats
Distribution of free embryos to boats in preparation for mass release.
Distribution of free embryos to boats in preparation for mass release.
Larval Release
Simultaneous mass release of 700,000 free embryos from boats distributed across the channel of the Upper Missouri River.
Simultaneous mass release of 700,000 free embryos from boats distributed across the channel of the Upper Missouri River.
Processing a Drift Sample
Student Contractor Garrett Cook processes a drift sample collected on June 27 shortly after the free embryos and beads were released. Note the small cluster of pallid sturgeon free embryos and green beads in the lower portion of the sorting tray. These embryos and beads were elements of the Upper Missouri River drift experiment.
Student Contractor Garrett Cook processes a drift sample collected on June 27 shortly after the free embryos and beads were released. Note the small cluster of pallid sturgeon free embryos and green beads in the lower portion of the sorting tray. These embryos and beads were elements of the Upper Missouri River drift experiment.
Dye Preparation
USGS scientists prepare to mix rhodamine-WT dye for the dye trace experiment. The suits are to keep the harmless dye off of clothing.
USGS scientists prepare to mix rhodamine-WT dye for the dye trace experiment. The suits are to keep the harmless dye off of clothing.
Monitoring riparian vegetation along the Colorado River
Monitoring riparian vegetation along the Colorado RiverMonitoring riparian vegetation along the Colorado River downstream of Glen Canyon Dam
Monitoring riparian vegetation along the Colorado River
Monitoring riparian vegetation along the Colorado RiverMonitoring riparian vegetation along the Colorado River downstream of Glen Canyon Dam
Pallid Sturgeon Embryo
Developing pallid sturgeon embryo.
Developing pallid sturgeon embryo.
Pallid Sturgeon Embryo
Macro photo of a developing pallid sturgeon embryo. Developing embryo appears light gray
Macro photo of a developing pallid sturgeon embryo. Developing embryo appears light gray
Trout Movements on the Smith River, One of Montana's Most Important Recreational Fisheries
Trout Movements on the Smith River, One of Montana's Most Important Recreational FisheriesLed by Dr. Al Zale with the Montana Cooperative Fishery Research Unit at Montana State University, researchers Michael Lance and T. David Ritter are working closely with Montana Fish, Wildlife & Parks personnel, local landowners, and engineers to study salmonid movements in the popular Smith River system in central Montana.
Trout Movements on the Smith River, One of Montana's Most Important Recreational Fisheries
Trout Movements on the Smith River, One of Montana's Most Important Recreational FisheriesLed by Dr. Al Zale with the Montana Cooperative Fishery Research Unit at Montana State University, researchers Michael Lance and T. David Ritter are working closely with Montana Fish, Wildlife & Parks personnel, local landowners, and engineers to study salmonid movements in the popular Smith River system in central Montana.
Sleeping Bear Dunes, Michigan
The USGS monitors water quality at the Sleeping Bear Dunes National Lakeshore in Empire, Michigan.
The USGS monitors water quality at the Sleeping Bear Dunes National Lakeshore in Empire, Michigan.
Sleeping Bear Dunes National Lakeshore
The USGS monitors water quality at the Sleeping Bear Dunes National Lakeshore in Empire, Michigan.
The USGS monitors water quality at the Sleeping Bear Dunes National Lakeshore in Empire, Michigan.
Sandbar beach on the Colorado River in Grand Canyon
Sandbar beach on the Colorado River in Grand CanyonRiver channel mapping boats on a sandbar beach on the Colorado River, in Grand Canyon, 2016. USGS photo, public domain.
Sandbar beach on the Colorado River in Grand Canyon
Sandbar beach on the Colorado River in Grand CanyonRiver channel mapping boats on a sandbar beach on the Colorado River, in Grand Canyon, 2016. USGS photo, public domain.
A piping plover adult standing over a nest scrape with four eggs
A piping plover adult standing over a nest scrape with four eggsA piping plover adult standing over a nest scrape with four eggs. Photo was taken on the Garrison Reach of the Missouri River, North Dakota
A piping plover adult standing over a nest scrape with four eggs
A piping plover adult standing over a nest scrape with four eggsA piping plover adult standing over a nest scrape with four eggs. Photo was taken on the Garrison Reach of the Missouri River, North Dakota
Piping plover adult stands on a sandbar
A piping plover adult stands on a sandbar on the Garrison Reach of the Missouri River, North Dakota. The yellow alphanumeric leg flag and color bands that identify it are clearly visible.
A piping plover adult stands on a sandbar on the Garrison Reach of the Missouri River, North Dakota. The yellow alphanumeric leg flag and color bands that identify it are clearly visible.
Two banded piping plover adults stand near a nest
Two banded piping plover adults stand near a nest with a small video camera pointed at it on a sandbar on the Garrison Reach of the Missouri River, North Dakota. The yellow alphanumeric leg flag and color bands that identify it are clearly visible. Video cameras were used to identify adults attending nests.
Two banded piping plover adults stand near a nest with a small video camera pointed at it on a sandbar on the Garrison Reach of the Missouri River, North Dakota. The yellow alphanumeric leg flag and color bands that identify it are clearly visible. Video cameras were used to identify adults attending nests.
Pink-footed shearwater in flight
A pink-footed shearwater in flight.
A female Agassiz's desert tortoise at Joshua Tree National Park
A female Agassiz's desert tortoise at Joshua Tree National ParkA female Agassiz's desert tortoise at Joshua Tree National Park lounges in the entrance of her burrow, wearing a USGS radio.
A female Agassiz's desert tortoise at Joshua Tree National Park
A female Agassiz's desert tortoise at Joshua Tree National ParkA female Agassiz's desert tortoise at Joshua Tree National Park lounges in the entrance of her burrow, wearing a USGS radio.