Lately, Sheboygan is on the upswing. This city in Wisconsin that sits along the Sheboygan River is booming with new housing, more tourism, and more water-based recreation opportunities, according to a recent Great Lakes Commission study. Illinois-Indiana Sea Grant (IISG), as part of a team of partners, provided expertise that contributed to this success story.

Not so long ago, the river was considered a black eye on the community. Labeled one of the most polluted rivers in the country, it was contaminated with an alphabet soup of PCBs and PAHs. With funding from the Great Lakes Restoration Initiative, approximately 300,000 cubic yards of contaminated sediment (or 15,000 full dump trucks) were removed from the river in 2012-2013. As a result, river-goers enjoy a deeper river with better navigation and access, and a cleaner habitat for fish and wildlife to thrive.

“There’s no question in my mind that if that cleanup effort hadn’t gone on, we would not see the kind of development and enthusiasm going on in our community,” said Adam Payne, Sheboygan County administrator. “It absolutely triggered a lot of the good things that are in play.”

As is typical for projects funded through the Great Lakes Legacy Act, partners were key to its success, including federal, state, local—agencies, non-for-profits, private companies—the list is extensive. “The level of collaboration and teamwork was unprecedented of anything I had seen in my career,” added Payne.

For its part, IISG funded research to assess the economic impact of the contaminated river on housing prices. “We looked at actual sales of single family houses in the area from 2002-2004,” explained John Braden, University of Illinois economist (now retired). “And we surveyed 850 residents to understand people’s perceptions of the river, and their willingness to pay more for housing if the river was cleaned up.”

Braden found that property values for homes within five miles of the contaminated waterways were significantly depressed—an 8 percent discount, on average. This research and related Sea Grant outreach helped illustrate the value of the cleanup, helped to keep the Sheboygan community informed about the remediation process as it happened, and helped to change the conversation about sediment remediation.

“Sediment remediation is very expensive, so how can we justify these multi-million dollar projects?” said Caitie Nigrelli, IISG social scientist. “The main goal is to improve environmental quality of water resources, but if we understand more of the benefits, we can make a better case for these projects.”

Nigrelli worked with a Sheboygan outreach team in 2012 to provide information to stakeholders and the public. She helped convey the results of Braden’s research in her outreach efforts through publications and other venues. In addition, bringing her social science expertise to the project, she oversaw a study to bring community perceptions to light to better understand how to communicate about the sediment remediation project and its benefits to the public.

“We found that while the river was viewed as an asset, it had a negative stigma,” said Nigrelli. “Our interviews before the remediation revealed that residents saw the water as unclean and some were hesitant and even afraid to come in contact with the water.”

Due to years of sedimentation, the depth of Sheboygan River was also viewed as a major concern as its shallowness limited access for larger boats and sailboats. While the point of the remediation was to remove contaminants, a side benefit was an increase in river depth. These and other findings helped Nigrelli and the outreach team target public information to address specific concerns.

Payne describes the value of a well-informed public in terms of just getting through the remediation process. “To put it in perspective, when we were removing the contaminated soil from the river and harbor, we had trucks coming and going through the heart of the city every three to five minutes, 24/7. That’s disruptive, lots of dust, noise, traffic and that obviously raises folks eyebrows and raises concerns. I think where outreach efforts were so helpful is in raising awareness with the public—these potential benefits are why we are going to go through this.”

To learn more about remediation partnership possibilities, “A Seat at the Table: Great Lakes Legacy Act” is a new video that explains what it means to be a cost-share partner with the Environmental Protection Agency under GLLA. The video uses interviews with partners to describe the benefits and challenges of cost-share partnering, the cost-sharing mechanism, examples of in-kind services and the flexibility of partnerships.

To see what successful partnerships can accomplish, follow Nigrelli (@Gr8LakesLady) on Twitter as she has been sharing 22 sediment site success stories, including before and after photos, contamination causes, partnerships and cleanup details. Follow and join the conversation using #22SedimentStories.

A collaborative research project about the impacts of quagga mussels in Lake Michigan has led to more funding for the issue from the National Science Foundation (NSF). The original project, jointly supported by the Illinois-Indiana and Wisconsin Sea Grant programs, looked at the effects of this invasive mussel in the deep parts of Lake Michigan on plankton abundance, the phosphorus cycle, and water movement.

Harvey Bootsma

The new project is funded by the Biological Oceanography and Physical Oceanography divisions of NSF for more than $1 million with the expectation that the results will be useful in understanding conditions in other large lakes as well coastal areas.

The principal investigators are Harvey Bootsma and Qian Liao with the University of Wisconsin-Milwaukee,

and Cary Troy with Purdue University. David Cannon is a Ph.D. student working on the project at Purdue.

In the original project, the team discovered that quagga mussels in Lake Michigan are eating more plankton than what is reaching them by sinking from above. They’ll be looking at how and why this could happen with the new project.

“We think that food delivery to the bottom of the lake is not just determined by the passive settling of phytoplankton as it’s sinking through the water, but that

Cary Troy

plankton is always being circulated in the lake,” said Bootsma. “It’s like the plankton are on a kind of conveyor belt where they’re going up and down.”

The researchers now will be studying turbulence in the entire water column.

Troy studied the impact mussels have on water movement as they filter it—sucking in water and spitting it

out. “Although this filtering has a dramatic effect on water quality, we found that quaggas do not strongly influence movement throughout the entire water column,” explained Cannon.

But the movement they cause in the thin layer immediately above the lake bed—a

Qian Liao

phenomenon consistent throughout the year thanks to stable temperatures at the bottom of Lake Michigan—is an element missing from most mussel filtration models.

The researchers also found that the mussels are changing the phosphorus cycle in the lake. “The nutrient-loading models used to set limits for phosphorus aren’t accurate anymore because of these new components to the ecosystem – bottom-dwelling filter feeders,” Bootsma said. “They have changed the rules for how Lake Michigan works.

David Cannon

“Lake managers have a conundrum right now. They’ve got too much algae in the nearshore zone and they want to reduce phosphorus to solve that problem. But there’s not enough phytoplankton in the offshore zone because of the mussels. So if they reduce phosphorus loading in the lake, they could make that offshore problem even worse so that there’s virtually no food left out there for the rest of the food web,” Bootsma said.

With the new project, Bootsma said his team hopes to determine what the “sweet spot” is for phosphorus loading. “There may not be one perfect phosphorus load that solves both the nearshore and offshore problem, but we’d like to try and find one that minimizes the nuisance algae while at the same time keeps the offshore animals alive with enough plankton production.”

The NSF project will start this spring. “Although we’re focusing on Lake Michigan, the work has implications for most of the other Great Lakes as well as other lakes in general that are being invaded by mussels,” Bootsma said. “We’re looking at a fundamental change in the way lakes work, and that’s the kind of thing the NSF is interested in.”

“It’s generally accepted that the ecosystems of smaller, shallower lakes—Lake Erie, for example—are at the greatest risk of quagga mussel invasion,” Cannon added. “Our results could help show other researchers that the effects of mussels on large, deep lakes cannot be ignored and, more importantly, how they can be accounted for.”

Irene Miles, IISG coordinator of strategic communication, contributed to this post.

Illinois-Indiana Sea Grant is a part of University of Illinois Extension and Purdue University Extension.

Scenes of massive snowfall in Great Lakes communities like Kalamazoo and Buffalo may become a thing of the past. A new study out of the University of Wisconsin suggests the region could see less lake effect snow as soon as the mid-21st century due to climate change. The total amount of precipitation will likely go up, but warmer temperatures and less lake ice means the air blowing east across the lakes will bring rain instead. 

The biggest change from snow to rain would be in November, the study shows, making the massive lake effect storm near Buffalo last month less likely by 2100. That storm dumped 90 inches of snow in some areas in five days. Thirteen people died and more than 100 miles of the New York State Thruway was shut down for days.  

[Michael] Notaro’s article was published in the Journal of Climate just days before the Buffalo-area storm. He is a senior scientist at the Nelson Institute Center for Climatic Research in Madison, Wisc. 

The paradox of lake effect snow, however, is that before it begins to drop off after 2050 it might actually increase for a few decades, according to research by Notaro and Colgate University professor Adam Burnett. 

“My original idea was that in the short run, as the lakes become warmer and and lake ice disappears, we would still have enough cold air around to produce lake effect snow,” said Burnett, whose 2003 study showed a rise in lake effect snow from Lake Ontario. “You could end up with some pretty serious snows like we saw in Buffalo.” Read more

***Photo A: Lake effect snow near Buffalo, NY in November. Photo by Michael Garrood. 
***Photo B: From WGGB in western Massachusetts. 

Scientists from Central Michigan University’s Institute for Great Lakes Research (IGLR) are expanding their basin-wide Great Lakes coastal wetlands monitoring program with help from grant funding from the U.S. Fish and Wildlife Service and the Wisconsin and Illinois-Indiana Sea Grant programs. The program is one part of a collaborative project that brings together researchers from IGLR, Notre Dame, and the University of Wisconsin-Green Bay. The results will help natural resource managers better target protection and restoration efforts.