Bruce Call is a Interdisciplinary Physical Scientist and Geographer at the Columbia Environmental Research Center.
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Bruce Call
Bruce Call is a Interdisciplinary Physical Scientist and Geographer at the Columbia Environmental Research Center.
Wild Black Carp
A black carp collected by USGS scientists from the Mississippi River. Credit: USGS.
A black carp collected by USGS scientists from the Mississippi River. Credit: USGS.
Wild Black Carp
A commercially caught wild black carp from the Mississippi River. Credit: USGS.
A commercially caught wild black carp from the Mississippi River. Credit: USGS.
USGS larval sampling boats wait out a fast approaching thunderstorm
USGS larval sampling boats wait out a fast approaching thunderstorm before deploying nets in the Upper Missouri River to collect drifting pallid sturgeon free embryos.
USGS larval sampling boats wait out a fast approaching thunderstorm before deploying nets in the Upper Missouri River to collect drifting pallid sturgeon free embryos.
White-tailed bucks at Lake of the Ozarks
Two white-tailed bucks (deer) looking at the camera at Lake of the Ozarks, Missouri.
Two white-tailed bucks (deer) looking at the camera at Lake of the Ozarks, Missouri.
A larval sampling boat with nets prepared for deployment
A larval sampling boat with nets prepared for deployment
A larval sampling boat with nets prepared for deployment
A fisheries technician prepares to release a tagged pallid sturgeon
A fisheries technician prepares to release a tagged pallid sturgeon into the Yellowstone River, Montana
A fisheries technician prepares to release a tagged pallid sturgeon into the Yellowstone River, Montana
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.
Examination of a Black Carp
A USGS intern preparing to examine a black carp captured from the wild. This fish and others were examined for various aspects of their life history, including age, the environments in which they have lived and whether they were naturally reproduced. Credit: USGS.
A USGS intern preparing to examine a black carp captured from the wild. This fish and others were examined for various aspects of their life history, including age, the environments in which they have lived and whether they were naturally reproduced. Credit: USGS.
Logs and Debris in the Yellowstone River
Logs and debris are a common occurrence during recent high flows in the Yellowstone River.
Logs and debris are a common occurrence during recent high flows in the Yellowstone River.
Releasing a Pallid Sturgeon on the Yellowstone River
Student Services contractor, Tanner, Cox releasing a pallid sturgeon on the Yellowstone River.
Student Services contractor, Tanner, Cox releasing a pallid sturgeon on the Yellowstone River.
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.
Montana Bound
A USGS scientist inventories his equipment at the Columbia Environmental Research Center before embarking on the trip to Montana for fieldwork.
A USGS scientist inventories his equipment at the Columbia Environmental Research Center before embarking on the trip to Montana for fieldwork.
Examining Pallid Sturgeon Eggs
Biological science aid, Marlee Malmborg, examines and records the viability of pallid sturgeon eggs at the Columbia Environmental Research Center.
Biological science aid, Marlee Malmborg, examines and records the viability of pallid sturgeon eggs at the Columbia Environmental Research Center.
Lake sturgeon at the USGS Columbia Environmental Research Center
USGS Biologist prepares to artificially spawn a female lake sturgeon in the laboratory at the Columbia Environmental Research Center.
USGS Biologist prepares to artificially spawn a female lake sturgeon in the laboratory at the Columbia Environmental Research Center.
USGS Biologist prepares to release a reproductive female sturgeon.
USGS Biologist Sabrina Davenport prepares to release a reproductive female pallid sturgeon.
USGS Biologist Sabrina Davenport prepares to release a reproductive female pallid sturgeon.
Newly hatched pallid sturgeon free embryos.
Pallid sturgeon free embryos on the day of hatch, approximately 8-9 mm (about 0.33 of an inch) in length.
Pallid sturgeon free embryos on the day of hatch, approximately 8-9 mm (about 0.33 of an inch) in length.
Pallid sturgeon free embryo at approximately 2 days post-hatch
Pallid sturgeon free embryo at approximately 2 days post-hatch, approximately 11-12 mm (about 0.45 of an inch) in length.
Pallid sturgeon free embryo at approximately 2 days post-hatch, approximately 11-12 mm (about 0.45 of an inch) in length.
Pallid sturgeon free embryo at approximately 5 days post-hatch
Figure 3. Pallid sturgeon free embryo at approximately 5 days post-hatch, approximately 14-15 mm (about 0.57 of an inch) in length.
Figure 3. Pallid sturgeon free embryo at approximately 5 days post-hatch, approximately 14-15 mm (about 0.57 of an inch) in length.
Pallid sturgeon free embryo at approximately 10 days post-hatch
Pallid sturgeon free embryo at approximately 10 days post-hatch, approximately 19-20 mm (about 0.77 of an inch) in length.
Pallid sturgeon free embryo at approximately 10 days post-hatch, approximately 19-20 mm (about 0.77 of an inch) in length.