July 30, 2009
Today was exciting! We had a news crew from WBKB television, a reporter from the Alpena News, and two wonderful speakers from the Michigan Department of Natural Resources Fisheries Research Station in Alpena, who were shuttled over to the Lake Guardian shortly after breakfast. Dave Fielder, a fisheries biologist with MDNR, started off our day of learning with a presentation on the Walleye populations of Saginaw Bay. The Walleye are increasing in numbers after the decrease of the Ailwife species in the Saginaw Bay. What makes this extremely interesting is that the Chinook Salmon were brought in to help out with the alewife problem, and it is the only time that an invasive species has ever been introduced to control another invasive species that had a positive outcome. (Ever hear of a cute little toxic critter in Australia called the Cane Toad?)
After the talk about the walleye recovery, we went outside to Station 26 and collected more data—this was our time to shine in front of the camera! We did the secchi disk, plankton nets, PONAR, and rosette. The news crew suited up and followed us out onto the deck. They mostly stayed back to watch and film, but one adventurous anchor tried to participate and grabbed the PONAR. Sharing what we had learned from the Lake Guardian marine techs early in the workshop, we ever-so-politely told her not to touch that one, because “it can rip your fingers off.” She quickly switched over to a safer prop, the sediment pulled up in the PONAR, which we now lovingly call “Muck.” Her brief report of what we were doing with it was to be featured on the evening news. Even though our group missed the actual broadcast, we heard that it was great, and we also made the top headline of The Alpena News in print and on line.
We ate a wonderful meal of taco casserole and lasagna (Did we mention that we love our cooks, Carl and Donna?), and then headed back to the science lab for another great presentation. Jim Johnson, who is also a Michigan DNR fisheries biologist, made the trek to the ship to speak with us about the history of the Chinook Salmon in the Great Lakes. For the younger “students,” the salmon have not always been present in the lakes, but they were actually introduced into the lakes in the 1960’s to try and take care of an Alewife overabundance problem the Great Lakes was experiencing. (Tons of dead fish were washing ashore in Lake Michigan.) The outcome achieved was better than most had anticipated. The sport-fishing industry grew, and the alewife population dwindled.
After Jim was finished speaking the visitors took the boat back to Alpena, and we raised the anchor so that we could set off to our next sampling spot. Group A took charge like pros. They tested in record time, and we were off to our next stop. The afternoon was given to us to work on our research projects, do a group concept mapping of our journals, prepare our styrofoam cups and spheres for “the deep” on Thursday, or whatever else we needed to work on. Some groups worked up on deck while our ship glided along the blue waters of Lake Huron - it was cool seeing the remains of the shipwrecked Nordmeer, which sank in 1966 - while others congregated in the science labs of the ship. Evening came, and we made one more hunt for Mysids. Even though we did not find any, we did bring up a different zooplankton, Holopedium gibberum, that is relatively rare in this part of Lake Huron. Before we studied it under a microscope, it looked like clear fish eggs.
As our week is starting to near the end, we’ve learned so much about the Great Lakes ecosystem and each other. We have grown to be friends as well as colleagues. It’s not just the cooks we love, but all the crew and scientists on board. Each person has helped us somewhere along the way in this learning adventure, and they are all very much appreciated. With any group that is together for more than a few days, ours has developed inside jokes….like David’s traveling socks, Barfometers, Shaggy, and the Benthic Babes or Muck Girls. Even the word “pheromones” can make some of us smile. The blog team asked each person to write down one “aha” moment today. Some wrote cute things about the week, others were very deep and thoughtful, but each is one thing that will stick with us far beyond the sea legs and feeling perfectly still buildings sway under our feet.
My ‘aha moment’ was when I found out the vast amount of differences in depth and the overall bathymetry of the Great Lakes. It shows the importance of knowing this information for shipping, boating, research, etc.
An ‘aha moment’ is the realization that the Great Lakes have had more changes in 17 years than in the last 10,000 years!
I am so glad I am learning and participating in so much more than I anticipated.
There is more to the study of the Great Lakes than recording changes. There are still discoveries and connections (Guy Meadow’s amazing study of Lake Huron’s ridge as a hunting corridor of ice age people.
Where have all the walleye’s gone? Now I know!
I take for granted everything we’ve learned about our environment: This trip has given me a new appreciation for the experience, dedication, and knowledge of our scientists and researchers – a great field for my students to consider.
I’ve had more than one ‘aha moment;’ too many to possibly count probably. I’ve been very surprised by the complexity of the research going on in the Great Lakes, and I’m glad I had this opportunity to see how much I still have to learn.
There are an amazing number of ship wrecks in Lake Huron in the vicinity of Thunder Bay because of the unique topography.
Finding out that there are hundreds, maybe thousands of unmapped shipwrecks really brought out the curious, child-like, loves mysteries archeologist in me.
There are no boring invasive species! So much to learn, know and understand about them.
The research done with sea lamprey is really interesting. The idea of lamprey using pheromones to communicate is fascinating.
Our visit to the NOAA Maritime Shipwreck Museum in Alpena drove home the awesome power of the lakes in general and Lake Huron specifically. The Great Lakes should never be taken lightly and always be respected.
Golly, an ancient hunting ground was recently discovered in Lake Huron!!!
And for the best quote for today…When asked how he stays so thin with all he eats, a COSEE student responded with “I dunno, the more I eat, the more I poop.”
Don’t forget to check out the article in the July 25th Detroit Free Press Local news briefs: Teachers to travel around Lake Huron
And another in the Fort Mill Times “Teachers to study Lake Huron aboard EPA vessel”(Published July 23, 2009)
The Alpena News