Research vessel Theodore R. Schmudde anchors in the swift water before lowering the sand cam (metal object suspended to the pulleys at the front of the boat).
Images
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Research Vessel Lowering a Sand Cam
Research vessel Theodore R. Schmudde anchors in the swift water before lowering the sand cam (metal object suspended to the pulleys at the front of the boat).
Tandem Tracking
Biologists prepare to tandem track a flooded Missouri River in search of telemetered Pallid Sturgeon.
Biologists prepare to tandem track a flooded Missouri River in search of telemetered Pallid Sturgeon.
Implanting Telemetry Tag in Pallid Sturgeon
Acoustic telemetry tags have to be fairly small to fit inside a five to fifteen pound pallid sturgeon. The average tag is about the size of your ring finger (60-90 mm long and 16 mm diameter). That means the battery that powers the acoustic tag is small, too. A small battery means that the signal from the tag is relatively weak, or fairly quiet.
Acoustic telemetry tags have to be fairly small to fit inside a five to fifteen pound pallid sturgeon. The average tag is about the size of your ring finger (60-90 mm long and 16 mm diameter). That means the battery that powers the acoustic tag is small, too. A small battery means that the signal from the tag is relatively weak, or fairly quiet.
Yellowstone Tracking Boat
A radio tracking boat cruises down a flooded Yellowstone River in search of telemetered pallid sturgeon.
A radio tracking boat cruises down a flooded Yellowstone River in search of telemetered pallid sturgeon.
A Cormorant's Meal
After a long struggle to position the fish just right, a double-crested cormorant finishes off a relatively young spotted gar.
After a long struggle to position the fish just right, a double-crested cormorant finishes off a relatively young spotted gar.
Under the Everglades
Though not as charismatic, the underwater periphyton and other vegetation are the primary support for all other life in the ecosystem.
Though not as charismatic, the underwater periphyton and other vegetation are the primary support for all other life in the ecosystem.
Wildlife at Summer Lake Wildlife Area
A pair of pelicans and in the background a Great Blue Heron in a Wetland at Summerlake Wildlife Area.
A pair of pelicans and in the background a Great Blue Heron in a Wetland at Summerlake Wildlife Area.
Pollinator Hovering
Bumble bee over a cone flower.
Bumble bee over a cone flower.
Bumble Bee Air Traffic Control
Three bumble bees around a cone flower.
Three bumble bees around a cone flower.
Listening
A USGS employee locates a telemetry tagged pallid sturgeon between attempts to recapture the fish with a trammel net in the Missouri River.
A USGS employee locates a telemetry tagged pallid sturgeon between attempts to recapture the fish with a trammel net in the Missouri River.
Viewing Pacific Lamprey
Deputy Assistant Secretary Deanna Archuleta tours the Bonneville Dam to view the fish ladder and in particular the native Pacific Lampreys used as first foods by Tribes along the Columbia River.
Deputy Assistant Secretary Deanna Archuleta tours the Bonneville Dam to view the fish ladder and in particular the native Pacific Lampreys used as first foods by Tribes along the Columbia River.
Pallid Embryo
Pallid sturgeon embryo propagated at the Columbia Environmental Research Center.
Pallid sturgeon embryo propagated at the Columbia Environmental Research Center.
Sunrise on the Suisun Bay
Sunrise peering through early morning tule fog in Suisun Bay, California.
Sunrise peering through early morning tule fog in Suisun Bay, California.
A Mesquite Savanna Plant Community in the Sonoran Desert
A Mesquite Savanna Plant Community in the Sonoran DesertIn the semiarid mesquite savanna community, pictured here, perennial grasses and forbs both are likely to decline as annual and winter precipitation decline with forecasted climate change.
A Mesquite Savanna Plant Community in the Sonoran Desert
A Mesquite Savanna Plant Community in the Sonoran DesertIn the semiarid mesquite savanna community, pictured here, perennial grasses and forbs both are likely to decline as annual and winter precipitation decline with forecasted climate change.
Rockfishes Inhabit Oil Platforms
Rockfishes inhabit oil platforms offshore of California.
Rockfishes inhabit oil platforms offshore of California.
Florida Panther
Florida panther; Puma concolor coryi, remains one of the most endangered mammals in the world.
Florida panther; Puma concolor coryi, remains one of the most endangered mammals in the world.
Mbatuitui (Tringa flavipes, Tringa melanoleuca)
Two birds wading: note the diferences in size and bill: the bigger is the Greater.
Two birds wading: note the diferences in size and bill: the bigger is the Greater.
Gastrocopta germindens
Gastrocopta germindens shell viewed with a scanning electron microscope.
Gastrocopta germindens shell viewed with a scanning electron microscope.
Gastrocopta gularis
Gastrocopta gularis shell viewed with a scanning electron microscope.
Gastrocopta gularis shell viewed with a scanning electron microscope.
Wandering Snag Snail (Gastrocopta servilis)
Gastrocopta servilis shell viewed with a scanning electron microscope with a zoom-in of the aperture.
Gastrocopta servilis shell viewed with a scanning electron microscope with a zoom-in of the aperture.
Strobilops sp.
Strobilops sp. shell viewed with a scanning electron microscope with aperture facing up.
Strobilops sp. shell viewed with a scanning electron microscope with aperture facing up.