August 13th, 2013 by Irene Miles
Quagga and Zebra Mussels are well-known names in the Great Lakes region, as these invasive species have already had an effect on marine wildlife. But both species are prevalent in waterways throughout the United States, and fighting their spread could require a boost from the Federal government.
From USA Today:
“The mussels, natives of Eastern Europe and Western Asia, were transported to the U.S. in the ballast water of trans-Atlantic cargo ships. They first appeared in the Great Lakes in the mid-1980s, and between 2000 and 2010, they cost that region’s water users some $5 billion. The invaders have since crossed the Rocky Mountains, likely hitching a ride on a vacationer’s boat (they can survive for weeks out of water).
Their rapid spread threatens water supplies and energy systems in the West, a region heavily dependent upon hydropower and often gripped by drought. In response, state officials have stepped up boat inspections and cleaning efforts in addition to calling for federal help.”
Read the complete article at the link above for more information about the spread of these invasives and how additional funding could help step up the fight against their spread.
August 7th, 2013 by Irene Miles
Researchers at the University of Illinois, working with the USGS and funded in part by Illinois-Indiana Sea Grant, have developed a modeling system that will help manage and prevent the spread of invasive Asian carp.
From Phys.org:
“The model, called Fluvial Egg Drift Simulator (FluEgg), follows a clutch of eggs over time as they travel downstream. Since carp spawn in turbulent waters, they seek places such as dams and spillways. To establish a large population in the Great Lakes, the carp would have to leave the lakes to spawn in the tributaries where the water moves rapidly, usually downstream from dams and spillways, where there is a lot of turbulence. The eggs have to stay suspended in the current to hatch – if they settle on the bottom, they die.
‘The challenge is, of all those million of eggs, how many of those end up hatching?’ said Marcelo Garcia, the U. of I. professor of civil and environmental engineering who led the project. ‘Our challenge has been to find a way to simulate this process from the spawning point all the way downstream. If the eggs are not kept in suspension, they will not be viable and they will die out. We have a model to look at certain streams – like tributaries to the Great Lakes – and figure out whether those streams are potential areas for Asian carp to reproduce. I think we have put together a tool that is going to be eye-opening, to say the least. It’s going to be a lot easier to visualize the transport and the conditions you need for hatching.'”
Read more about the model at the link above, and read about their outreach project here.
July 24th, 2013 by Irene Miles
Senators Mark Kirk (R) and Dick Durbin (D) of Illinois recently passed an amendment that would prevent the Army Corps of Engineers from moving critical invasive species prevention functions out of their current Chicago location .
From CBC News:
“An amendment to the Energy and Water Appropriations bill has passed and prevents the removal of critical functions and staff from the District Office of the U.S. Army Corps of Engineers in Chicago. The Windy City is home of the frontline fight against Asian carp entering the Great Lakes.
Republican Senator Mark Kirk and Senator Richard Durbin, a Democrat, proposed the amendment after U.S. Army Corps of Engineers announced plans to move Chicago district office functions to Detroit.
The senators believe the move, had it been made, would have potentially affected more than 200 employees who oversee projects such as Asian carp electric barriers and Chicago locks and dams designed to keep the invasive species out of the Great Lakes.”
Read the complete article at the link above to learn more.
July 12th, 2013 by Irene Miles
Greg Hitzroth, IISG’s organisms in trade outreach specialist, recently attended both the Northern Midwest Zen Nippon Airinkai Koi Club Show and the Indiana Koi and Water Garden Club Show to speak directly with water gardeners about making the right choices to prevent selecting and spreading invasive species.
The overall message he shared with the attendees was that even common plants associated with water gardens can quickly become “aquatic invaders” under the right conditions. Aquatic invaders are plants and animals that cause ecologic and economic harm once established in public waterways, and removing them can be very expensive and often impossible. One way that aquatic invaders are introduced or spread into public waters is through the intentional or unintentional release of species from water gardens and koi ponds.
Prevention is the best and most cost-effective way to keep aquatic invaders from spreading, and the gardeners and landscapers heard about a number of methods at the shows.
The first way to keep these species from spreading is to avoid buying and using them at all. Instead, Greg recommended purchasing native species and avoiding known invasives like those on identified by Reuben Keller of Loyola University Chicago and Christa Gants and David Lodge of University or Notre Dame in their article (PDF). The Chicago Botanic Garden’s website has a list of invasive species and alternatives that are not invasive or environmentally threatening to help guide gardeners’ purchase.
Additionally, simple steps like finding appropriate alternatives to releasing these species (including trading, returning them to retailers, or properly disposing of them) can have a profound effect in keeping aquatic invaders from establishing in other areas.
Greg will be presenting this information at other upcoming shows and events, including this weekend’s Midwest Koi and Pond Show, and looks forward to providing information about preventing aquatic invaders to gardeners and hobbyists throughout the season. Illinois-Indiana Sea Grant is creating a number of educational materials about preventing these species from spreading, and more information about those will be posted soon.
June 27th, 2013 by Irene Miles
Illinois-Indiana Sea Grant’s summer interns are already hard at work assisting specialists in several areas, working directly on important issues and getting the public involved in problems facing the Great Lakes.
Alice Denny, one of the interns working with the aquatic invasive species team, has been working with AIS specialist Sarah Zack to bring important invasive species prevention information to fishing tournament organizers and participants. She just recently attended the first of several tournaments slated for this summer, and wrote in to tell us about the internship experience thus far.
“It has been a busy week for me at the AIS office. This summer I am primarily working with fishing tournament organizers and anglers to better understand their attitudes and practices in AIS prevention. Last weekend, I attended my first fishing tournament and had a great time. Although the weather was less than ideal at North Point Marina, Clean Boats Crew and I were able to reach out to the salmon and trout anglers in the Geoffrey Morris Memorial Tournament. Sarah and I attended the rules meeting Friday evening to talk about simple steps tournament anglers can take to prevent the spread of AIS. Then on Saturday I went to the weigh-in to speak with anglers one-on-one and hand out educational material. There were around 70 boats participating in the tournament, with multiple anglers per boat. The audience was receptive and I really enjoyed speaking with them about the importance of AIS prevention. I’ll be attending another tournament in Indiana next weekend, and I’m hoping for nice weather and lots of fish so I can reach as many anglers as possible! Overall I’m really enjoying working with this audience over the summer as I’m getting lots of experience with outreach.”
Several of our interns wrote about their experiences at the IAGLR 2013 conference, and there are many more events and projects they’ll be updating us on throughout the summer.
June 25th, 2013 by Irene Miles
Aquatic invaders come in a number of shapes, sizes, and varieties, and aren’t limited to mussels or fish. In addition to our “Be A Hero – Transport Zero” campaign asking boaters and water users to be on the lookout for invasive species, IISG has helped fund “Hydrilla Hunt!,” a program to keep this invasive plant from overtaking Illinois’ waters.
Hydrilla verticillata, commonly known as “hydrilla,” is an aquatic invasive “superweed” – a non-native plant that can grow quickly in waterways and cause serious environmental and economic damages. But before this species takes over, Illinois partners are asking water lovers for their help in preventing hydrilla’s spread.
“Recognized as one of the world’s worst weeds, hydrilla can grow an inch per day and form dense mats of vegetation at the water surface. Within the past few years, hydrilla has been discovered in Wisconsin and Indiana and it is expected to arrive in Illinois very soon. Our desirable native aquatic plants, sport fishing, native wildlife, waterfront property values, and recreational uses might all be seriously impacted.
‘Early detection of hydrilla could save Illinois millions of dollars in control costs,’ noted Cathy McGlynn, coordinator for the Northeast Illinois Invasive Plant Partnership (NIIPP). ‘Experience from other states shows that once a waterway becomes infested with hydrilla, it’s nearly impossible to control. Our hope in Illinois is to identify the plant at a very early stage when populations are still small enough to eradicate and manage,’ added McGlynn.”
Because this species can spread so quickly, the “Hydrilla Hunt!” program is asking boaters, fishermen, swimmers, sailors, and more to help locate it and notify them via e-mail with photos if possible.
June 14th, 2013 by Irene Miles
Illinois-Indiana Sea Grant and the Illinois Department of Natural Resources are collaborating on a new campaign to get boaters, fishers, divers, and everyone who loves spending time on the water involved in protecting the environment.
“Be a Hero – Transport Zero” is a multi-season message that strikes at one of the big problems facing our waterways – aquatic invasive species. With three simple steps, though, everyone can help stop the spread of these aquatic invaders. Each time you leave a body of water, just take a minute to go through these easy procedures:
– Remove any plants, animals, and mud from boats, trailers and equipment
– Drain everything (bait buckets, live wells, etc.)
– Dry everything with a towel
From boaters and kayakers to waterfowl hunters, scuba divers, sea plane operators, and more, everyone can help prevent invasive species from taking over their favorite waterways with these three actions.
June 11th, 2013 by Irene Miles
Governors of the Great Lakes states and Canadian officials have recently vowed to work more closely to combat aquatic invasive species that threaten the Great Lakes system, but disagreements over the best course(s) of action linger.
From The Detroit News:
“But the difficult balancing act of weighing the economic and transportation interests of the eight states and two Canadian providences against the long-term ecological stability of the Great Lakes and St. Lawrence Seaway was on full display Saturday at the Mackinac Island summit of regional officials.
Illinois Gov. Pat Quinn, whose state has faced criticism and lawsuits for moving too slow to combat the invading Asian carp, surprised fellow governors by shifting the state’s position to support the sealing off of the manmade Chicago waterways that connect the Mississippi River to the Great Lakes.
‘Ultimately, I think we have to separate the basins,’ Quinn said at the first meeting of the Council of Great Lakes Governors in eight years. ‘I really feel that is the ultimate solution. We have to do it.’
Quinn’s endorsement of separating the two basins, seen as a potential breakthrough by environmentalists, was criticized by neighboring Indiana Gov. Mike Pence, even as the Great Lakes leaders sought to appear united on other issues at the summit.
Pence said his state remains opposed to closing the Chicago Sanitary and Ship Canal’s connection to Mississippi River tributaries that provide a southern transportation route for freighters carrying $1.9 billion in goods annually from Indiana factories and farms.”
Read the complete article at the link above.
June 3rd, 2013 by Irene Miles
IISG’s science writer, Anjanette Riley, is at the 2013 International Association for Great Lakes Research conference at Purdue University. She’ll be blogging from the sessions all week providing an inside look at the newest research on the health of the Great Lakes. Here’s today’s post:
“There is more food for Asian carp in Lake Michigan than people thought. In a morning filled with new insights into these invasive species’ biology and potential impact in the Great Lakes, this fact rang the loudest for me. I have read some of the research in recent years speculating that Asian carp could not survive in much of the Great Lakes, which have less of the phytoplankton and zooplankton than the ravenous eaters need. What my fellow session attendees and I learned this morning, though, is that the plankton population has been underestimated. There are more–much more–of the smallest species living in the nearshore waters of Lake Michigan than previously believed.
According to researchers from the Illinois Natural History Survey, the cause of the miscalculation is a common testing method that uses a filter too large to trap many of the microscopic species in the lake. Additional testing measures show that the number of some plankton species found in the lake is roughly the same as in rivers where Asian carp are known to thrive, like the Ohio and Missouri Rivers. And there are plankton species in the lake that are not found in many of these waterways. Taken together, this means that likelihood that Asian carp can make Lake Michigan their home may be higher than previous data has indicated.
The session this morning also taught me that carp will branch away from their favorite dish to eat the particulates from decomposed animals and plants that line the floors of lakes and rivers. These exist in much higher numbers than plankton and their stock is continuously replenished as aquatic matter dies. Although it is still unknown whether Asian carp would choose this food over others (or eat it only when there is nothing else), this could mean that plankton in the Great Lakes may not have to bear the brunt of the carp’s huge diet alone if the invasive fish were ever to take up residence.”
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