Great Lakes Science Center

Multimedia

Filter Total Items: 164
Smelt Closeup
March 28, 2019

A Smelt Closeup

Closeup view of a Smelt (Osmerus mordax)

Diver using camera and scooter completing a transect
March 14, 2019

Diver swimming a circular transect

This SCUBA diver is using a camera integrated with a scooter running a circular transect. The white line attached to the scooter is also attached to a pivot point at the center of the sample area.

Dive camera system on the boat
March 14, 2019

Dive Camera System Ready to Deploy In Lake Ontario

An integrated camera and scooter system is ready to deploy in Lake Ontario. The camera is used to record circular transects.

Adaptive Management Forum
February 28, 2019

Adaptive Management Forum Brochure

Adaptive Management Forum Brochure.This conference was held at the University of California, Davis on February 5-6, 2019.

2019 GLB NOSB 1st Place Winner Troy High School
February 2, 2019

2019 GLB NOSB 1st Place Winner Troy High School

2019 GLB NOSB 1st Place Winner Troy High School.

Holding a Chinook Salmon
December 31, 2018

Holding a Chinook Salmon

Carson Pritchard (left), a former GLSC contractor and 4-H camp counselor, shows off a Great Lakes Chinook salmon with a 4-H camper. Alewife are the primary forage of Chinook salmon. Consequently, understanding alewife age dynamics helps fishery managers balance predator numbers with the available prey. This photo was taken in 2018, prior to the COVID-19 pandemic.

Viewing an Otolith Under a Microscope
December 31, 2018

Viewing an Otolith Under a Microscope

Lynn Ogilvie, a USGS biological science technician, adjusts an otolith under a microscope. Photographs of otoliths are taken using a camera mounted on top of the microscope and a video feed on the computer. Notice the magnified otolith on the screen in the background. This photo was taken in 2018, prior to the COVID-19 pandemic.

Graduate Students Mounting and Reading Otoliths
December 31, 2018

Graduate Students Mounting and Reading Otoliths

State University of New York-Brockport graduate student, Tom Bianchi, interprets alewife otolith ages (foreground) while student contractor Scott Minihkiem (background) mounts otoliths in epoxy. Bianchi is evaluating how alewife age influences reproductive success and was trained in otolith techniques at the GLSC’s Lake Ontario Biological Station. This photo was taken in

...
Otoliths in Vials
December 31, 2018

Otoliths Waiting to be Aged

Hundreds of alewife otoliths, all stored in separate vials, wait to be aged at the GLSC Lake Ontario Biological Station.

Grass Carp Eggs Under a Microscope
December 31, 2018

Grass Carp Eggs Under a Microscope

Grass Carp Eggs being examined under a microscope to determine developmental stage.

Grass Carp Larva
December 31, 2018

Maumee River Grass Carp Larva

A Grass Carp larva captured during a survey in the Maumee River, a Lake Erie tributary. Grass Carp are an invasive species that consume vegetation destroying habitat used by other species.

Using Bongo Nets to Collect Fish Larvae
December 31, 2018

Scientists Looking for Grass Carp Larvae

Dr. Patrick Kocovsky and Maddy Tomczak, University of Toledo student, look for Grass Carp lavae and eggs in the Sandusky River using a set of bongo nets, so named because they resemble bongo drums.  The nets are deployed one above the other so that one samples the surface water while the other samples deeper water.