Images

Native to the Great Lakes, this virile or northern crayfish (Faxonius virilis) was collected from a gillnet in the Northern Refuge of Lake Michigan during a fall lake trout spawner survey. Photo credit: Patty Dieter, USGS.

USGS researchers tagging recently caught lake whitefish that will be released back into Lake Huron for an acoustic telemetry project to track fish movements. Photo credit: Chris Holbrook, USGS.

Leaving Alpena for a day of Great Lakes science during the Lake Huron fall forage fish survey. Photo credit: Cory Brant, USGS.

A slimy sculpin (Cottus cognatus) surrounded by rocks in Lake Superior. Photo credit: Scott Dwyer, USGS.

A burbot (Lota lota) between rocks illuminated by a dive light at night, in Lake Superior. Photo credit: Alden Tilley, USGS.

A larval coregonine, collected by USGS scientists during the 2022 Cooperative Science and Monitoring Initiative survey on Lake Huron, is examined and identified using a stereo microscope and high-resolution camera. Photo credit: Cory Brant, USGS.

Fisheries Technician Kristy Phillips (GLSC-Ann Arbor) demonstrates fish aging using the annular rings in fish scales for USGS Director David Applegate. Photo Credit: Josh Miller (USGS).

USGS Director David Applegate along with Associate Director Anne Kinsinger and Dr. Kurt Kowalski listen to Dr. Wes Bickford describe invasive Phragmites australis and the research being done at the Great Lakes Science Center to control it. Photo Credit: Josh Miller (USGS)

USGS Director David Applegate, along with Associate Director Anne Kinsinger and Dr. Bo Bunnell listen to Dr. Ed Roseman describe the life cycle of lake sturgeon. Photo Credit: Josh Miller (USGS).

USGS Director David Applegate looks at Sea Lamprey in a tank at the Great Lakes Science Center. Dr. Bo Bunnell and Kevin Keeler describe the animal and our work with this invasive species. Photo Credit: Josh Miller (USGS).

USGS scientists busy developing methods for identifying pollinators using environmental-DNA. Photo credit: Dawn Shively, USGS (contractor).

Preparing flower samples for spiking with known DNA for a method development experiment evaluating pollinator environmental-DNA recovery from flowers. Photo credit: Dawn Shively, USGS (contractor).

The tour group, from left to right, included Scott Miehls and Tyler Bruning (USGS-GLSC), Sabina Ziola (Procom), Nick Johnson (USGS-GLSC), Krzysztof Niezabitowski (Procom), and Pete Hrodey (USFWS). Photo credit: Andrea Miehls, USGS. 

A unique perspective of the Great Lakes Science Center’s research vessel Sturgeon while docked in Kilarney, Ontario, during the 2022 hydroacoustic fishery assessment. Photo credit: Kristy Phillips, USGS.

Approaching the Port Washington Breakwater Light in Wisconsin on a foggy Lake Michigan while heading out for a day of trawling aboard the USGS research vessel Arcticus during a fall forage fish survey. Photo credit: Patty Dieter, USGS.

This image taken on 28 September 2022 depicts a control patch of Phragmites australis after treatment with water. Photo Credit: Spencer Widin

Characteristic visual differences between control plots receiving water treatment (left) and experimental plots receiving bioherbicide treatment (right).  Photo Credit: Spencer Widin, USGS.

Grasshopper resting on common teasel (Dipsacus fullonum). Photo credit: Taaja Tucker-Silva, USGS.

This image taken on 28 September 2022 depicts a test patch of Phragmites australis after treatment with a bioherbicide. Photo Credit: Spencer Widin

View of the north side of the Big Tub lighthouse looking out on Lake Huron in Tobermory, Ontario, at the tip of the Bruce Peninsula in Lake Huron. Photo credit: Kristy Phillips, USGS.

A pair of shaggy ink cap mushrooms on a gravel path near the Big Tub Lighthouse in Tobermory, Ontario. Photo credit: Kristy Phillips, USGS.