The 1,000-Mile Great Lakes Adventures

Showing posts with label USGS. Show all posts
Showing posts with label USGS. Show all posts

Sunday, April 26, 2015

The Day I Held a Lamprey

The United States Geological Service (USGS)
 has a research facility on northern Lake Huron dedicated to studying and controlling the invasive lamprey. This creature (it resembles an eel, but is actually in a separate class) suctions on to large fish and literally sucks the life out of them.

I interviewed Dr. Mike Hansen, Field Station Supervisor, for my second book. 

While back in Rogers City recently to give a talk at the library, I stopped in at the facility to see 
Dr. Hansen and tour the facility.

USGS Station signs

 Lamprey entered Lake Erie through the Welland Canal in the 1930s. Prior to this, the lamprey had populated Lake Ontario, but were prevented from moving into the other lakes by Niagara River and the mighty Niagara Falls.

Lauren (a communications rep) with the eggs from just one female lamprey 

A single lamprey lays tens of thousands of eggs. It is impossible to eradicate them, so controlling the population is the best option.

Lamprey are kept in these containers for study

 This facility studies the lamprey, organizes monitoring of streams and rivers where they spawn, and coordinates the treatment of waterways to kill lamprey when they are in the larval stage.

It's best to keep your eye on the lamprey...especially if it's got an eye on you

The multi-toothed suction mouth of the lamprey



Juvenile lamprey. Not so scary, but they'll latch on faster than the adults 

You can stop in and get a tour of the station located on Hammond Bay just north of Rogers City on Wednesdays and Thursdays at 2pm, or by appointment.
Learn more about the station HERE
And read about this important work in my second book, A 1,000-Mile Great Lakes Walk.

Saturday, November 9, 2013

Annual Lake Michigan Bottom Survey



That's me on board the SS Grayling


I was thrilled to be invited to come aboard the vessel used for the USGS annual bottom survey of the Great Lakes!

This year, the scientists used an underwater camera


Dr. David "Bo" Bunnell of the Great Lakes Science Center


The boat is outfitted with specialized machinery for the trawl

Yellow perch

USGS logo on the Grayling


Alewives




Dr. David "Bo" Bunnell assesses the catch



Quagga mussel


A deep water species, the slimy scalpin



Check out the video from this day out on the lake below. This experience will be part of my newest book, 
A 1,000-MILE GREAT LAKE 
ISLAND ADVENTURE, 
which will be released in 2015.