Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Images
Powerline sites with the trap arrangement (small bowls with soapy water hanging from a frame; the bees are attracted to and get entrapped in the water).
Powerline sites with the trap arrangement (small bowls with soapy water hanging from a frame; the bees are attracted to and get entrapped in the water).
Researchers emptying a set of traps. The team uses a hand-net to capture larger bees observed along the transects. The same approach is used in the non-powerline land cover types to survey bees in those land covers.
Researchers emptying a set of traps. The team uses a hand-net to capture larger bees observed along the transects. The same approach is used in the non-powerline land cover types to survey bees in those land covers.
Underwater image of a wave breaking over a coral reef on Kwajalein Atoll in the Republic of the Marshall Islands. This image shows how the high hydrodynamic roughness of live, healthy corals causes friction that induces breaking of waves over coral reefs, reducing wave energy at the shoreline that can cause flooding and island overwash.
Underwater image of a wave breaking over a coral reef on Kwajalein Atoll in the Republic of the Marshall Islands. This image shows how the high hydrodynamic roughness of live, healthy corals causes friction that induces breaking of waves over coral reefs, reducing wave energy at the shoreline that can cause flooding and island overwash.
Scientist surgically implants an acoustic transmitter in a shovelnose sturgeon to monitor spawning behavior during controlled experiments.
Scientist surgically implants an acoustic transmitter in a shovelnose sturgeon to monitor spawning behavior during controlled experiments.
On April 29, hydrologic technicians Anthony Underwood and Jeremiah Pomerleau visited the USGS gaging station on the St. John River at Ninemile Bridge and found a sea of broken up, dirty ice left behind by a recent ice jam.
According to Anthony, photos don't do the size and scale of the ice chunks any justice.
On April 29, hydrologic technicians Anthony Underwood and Jeremiah Pomerleau visited the USGS gaging station on the St. John River at Ninemile Bridge and found a sea of broken up, dirty ice left behind by a recent ice jam.
According to Anthony, photos don't do the size and scale of the ice chunks any justice.
Researchers count out 800 eight-day old, free embryo lake sturgeon for studies of downstream dispersal in experimental streams.
Researchers count out 800 eight-day old, free embryo lake sturgeon for studies of downstream dispersal in experimental streams.
Lake sturgeon free embryos at 3 days post hatch. Free embryos at this stage have only a rudimentary mouth, their pectoral fins are only beginning to develop, and they rely on a large yolk sac for food.
Lake sturgeon free embryos at 3 days post hatch. Free embryos at this stage have only a rudimentary mouth, their pectoral fins are only beginning to develop, and they rely on a large yolk sac for food.
USGS research geographer Ben Jones is dressed warmly as he stands next to portable core-drilling device in a snow-covered area.
USGS research geographer Ben Jones is dressed warmly as he stands next to portable core-drilling device in a snow-covered area.
The new, large research vessel (R/V) Arcticus will enable USGS Great Lakes Science Center scientists to explore fish health and water quality in Lakes Michigan and Huron.
The new, large research vessel (R/V) Arcticus will enable USGS Great Lakes Science Center scientists to explore fish health and water quality in Lakes Michigan and Huron.
The new, large research vessel (R/V) Arcticus will enable USGS Great Lakes Science Center scientists to explore fish health and water quality in Lakes Michigan and Huron.
The new, large research vessel (R/V) Arcticus will enable USGS Great Lakes Science Center scientists to explore fish health and water quality in Lakes Michigan and Huron.
The new, large research vessel (R/V) Arcticus will enable USGS Great Lakes Science Center scientists to explore fish health and water quality in Lakes Michigan and Huron.
The new, large research vessel (R/V) Arcticus will enable USGS Great Lakes Science Center scientists to explore fish health and water quality in Lakes Michigan and Huron.
Newly hatched lake sturgeon free embryos. Sturgeon embryos hatch without well-developed eyes, mouth, or fins and rely on a large yolk sac to fuel rapid early development.
Newly hatched lake sturgeon free embryos. Sturgeon embryos hatch without well-developed eyes, mouth, or fins and rely on a large yolk sac to fuel rapid early development.
A slice of a piston core containing wood and plant material from Russell Key in Florida Bay, Everglades National Park, April 18, 2014. The large piece of wood is from a red mangrove. Photo: USGS
A slice of a piston core containing wood and plant material from Russell Key in Florida Bay, Everglades National Park, April 18, 2014. The large piece of wood is from a red mangrove. Photo: USGS
The transition between a mud flat on the interior of Bob Allen Key (Florida Bay, Everglades National Park) and the mangroves that form the islands’ protective outer berm. These black mangroves have pneumatophores – parts of the root that function like snorkels, allowing the roots to “breathe” when water overlies the mud flat. Photo: Anna Wachnicka, FIU
The transition between a mud flat on the interior of Bob Allen Key (Florida Bay, Everglades National Park) and the mangroves that form the islands’ protective outer berm. These black mangroves have pneumatophores – parts of the root that function like snorkels, allowing the roots to “breathe” when water overlies the mud flat. Photo: Anna Wachnicka, FIU
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.
A USGS scientist uses a remotely controlled "z-boat" to survey the experimental ponds at the Columbia Environmental Research Center.
A USGS scientist uses a remotely controlled "z-boat" to survey the experimental ponds at the Columbia Environmental Research Center.
USGS hydrologic technician Jayson Blom collects a water-level measurement at a monitoring well on the U.S. Department of Energy's Idaho National Laboratory site. During the summer of 2014, water levels measured at the site reached all-time lows.
USGS hydrologic technician Jayson Blom collects a water-level measurement at a monitoring well on the U.S. Department of Energy's Idaho National Laboratory site. During the summer of 2014, water levels measured at the site reached all-time lows.
U. S. Geological Survey Scientists Carol Johnson, Eric White and Tim McCobb prepare to deploy geophysical equipment in a coastal embayment April 9, 2015 in Falmouth, Massachusetts.
U. S. Geological Survey Scientists Carol Johnson, Eric White and Tim McCobb prepare to deploy geophysical equipment in a coastal embayment April 9, 2015 in Falmouth, Massachusetts.
Laboratory technician Amelia Ulmer filters water collected in the field, to be analyzed for environmental DNA in the laboratory of Dr. Margaret Hunter. This sample was tested for Burmese python eDNA, in a process similar to that developed by Dr. Hunter for manatee eDNA.
Laboratory technician Amelia Ulmer filters water collected in the field, to be analyzed for environmental DNA in the laboratory of Dr. Margaret Hunter. This sample was tested for Burmese python eDNA, in a process similar to that developed by Dr. Hunter for manatee eDNA.
One of six experimental stream segments used to study the dispersal of free embryo sturgeon at the Columbia Environmental Research Center. The stream segment is 5 meters long and 0.5 meters wide, and is filled with cobble-sized rock to a depth of 12 centimeters. Streams are covered during studies.
One of six experimental stream segments used to study the dispersal of free embryo sturgeon at the Columbia Environmental Research Center. The stream segment is 5 meters long and 0.5 meters wide, and is filled with cobble-sized rock to a depth of 12 centimeters. Streams are covered during studies.
The new, large research vessel (R/V) Arcticus will enable USGS Great Lakes Science Center scientists to explore fish health and water quality in Lakes Michigan and Huron.
The new, large research vessel (R/V) Arcticus will enable USGS Great Lakes Science Center scientists to explore fish health and water quality in Lakes Michigan and Huron.