Mikhail Malin, visiting IBIW scientist, prepares to lowers a hydroacoustic transducer into the water from a CERC research vessel below Bagnell Dam on the Osage River, Missouri. The CERC and IBIW collaborated with the Missouri Cooperative Fish and Wildlife Research Unit at the University of Missouri to assess the distribution of paddlefish below the dam us
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Lowering a Hydroacoustic Transducer
Mikhail Malin, visiting IBIW scientist, prepares to lowers a hydroacoustic transducer into the water from a CERC research vessel below Bagnell Dam on the Osage River, Missouri. The CERC and IBIW collaborated with the Missouri Cooperative Fish and Wildlife Research Unit at the University of Missouri to assess the distribution of paddlefish below the dam us
Newly Reconstructed Pond
Beau Griffith, a biological technician at CERC, stands at the bottom of one of the newly reconstructed ponds designed to conduct long-term studies with sturgeon and other riverine species. A divider and circulators can be installed in the sandy-bottomed ponds to create the continuous water current that sturgeon prefer.
Beau Griffith, a biological technician at CERC, stands at the bottom of one of the newly reconstructed ponds designed to conduct long-term studies with sturgeon and other riverine species. A divider and circulators can be installed in the sandy-bottomed ponds to create the continuous water current that sturgeon prefer.
USA-NPN Citizen-Scientist Lucille Tower
USA-National Phenology Network citizen-scientist Lucille Tower records the one millionth observation on maple vine in the large nature database.
USA-National Phenology Network citizen-scientist Lucille Tower records the one millionth observation on maple vine in the large nature database.
Herpetology
A USGS herpetologist with a Sonora Mud Turtle (Kinosternon sonoriense; photo left) and Red-eared Slider (Trachemys scripta elegans;
photo right) at Montezuma Well, Montezuma Castle National Monument.
A USGS herpetologist with a Sonora Mud Turtle (Kinosternon sonoriense; photo left) and Red-eared Slider (Trachemys scripta elegans;
photo right) at Montezuma Well, Montezuma Castle National Monument.
Strobilops sp.
Strobilops sp. shell viewed with a scanning electron microscope.
Strobilops sp. shell viewed with a scanning electron microscope.
Thysanophora caecoides
Thysanophora caecoides shell viewed with a scanning electron microscope.
Thysanophora caecoides shell viewed with a scanning electron microscope.
Glossy Granule Snail (Guppya gundlachi)
Ventral view of Guppya gundlachi shell observed with a scanning electron microscope.
Ventral view of Guppya gundlachi shell observed with a scanning electron microscope.
Minute Gem Snail (Hawaiia minuscula)
Hawaiia minuscula shell viewed with a scanning electron microscope with aperture facing up.
Hawaiia minuscula shell viewed with a scanning electron microscope with aperture facing up.
Yam Babybody Snail (Pupisoma dioscoricola)
Pupisoma dioscoricola shell viewed with a scanning electron microscope.
Pupisoma dioscoricola shell viewed with a scanning electron microscope.
Ribbed Pinwheel Snail (Radiodiscus millecostatus)
Radiodiscus millecostatus shell viewed with a scanning electron microscope with aperture facing up.
Radiodiscus millecostatus shell viewed with a scanning electron microscope with aperture facing up.
Median Striate Snail (Striatura meridionalis)
Striatura meridionalis shell viewed with a scanning electron microscope.
Striatura meridionalis shell viewed with a scanning electron microscope.
Lucidella lirata
Lucidella lirata shell viewed with a scanning electron microscope.
Lucidella lirata shell viewed with a scanning electron microscope.
Ornamented Bivalve Mollusk
Bivalve mollusk with a highly-ornamented shell. (Scanned From Negative)
Bivalve mollusk with a highly-ornamented shell. (Scanned From Negative)
Chanomphalus pilsbryi
Chanomphalus pilsbryi shell viewed with a scanning electron microscope.
Chanomphalus pilsbryi shell viewed with a scanning electron microscope.
Studying Marsh Subsidence
National Wetlands Research Center workers set bench marks to study marsh subsidence.
National Wetlands Research Center workers set bench marks to study marsh subsidence.
Upstream View of the Rio Nigua at Turnpike
When the river stops flowing the channel becomes brushy because of the moisture in the river bottom. The location is 17º59'15"N, 66º17'40" and the elevation is 10 m. All photographs are at the same location.
When the river stops flowing the channel becomes brushy because of the moisture in the river bottom. The location is 17º59'15"N, 66º17'40" and the elevation is 10 m. All photographs are at the same location.
Cattle and Cattle Egrets (Bubulcus ibis)
A pair of unidentified grazing cattle (Bovidae Family) with cattle egrets (Bubulcus ibis) in the grass. Deforestation is visible in the background.
A pair of unidentified grazing cattle (Bovidae Family) with cattle egrets (Bubulcus ibis) in the grass. Deforestation is visible in the background.
Removing Blood Sample of Shortnose Sturgeon
Removing a blood sample from a shortnose sturgeon to determine a colorimetric technique for revealing sex and establish contaminant levels.
Removing a blood sample from a shortnose sturgeon to determine a colorimetric technique for revealing sex and establish contaminant levels.
Oil Well
Oil well and a looming storm.
Brine Pit
Brine pit in Sheridan County, Montana.
Brine pit in Sheridan County, Montana.
Electrofishing Boat
Marc Blouin, NBS Research Biologist, uses an electrofishing boat to obtain information on fish populations in the Black River in Lorain, Ohio.
Marc Blouin, NBS Research Biologist, uses an electrofishing boat to obtain information on fish populations in the Black River in Lorain, Ohio.