starry trek

Starry Trek 2020

A huge thanks to all Starry Trek participants! We had over 212 people join in across the state. Collectively, you searched a total of 292 public accesses on 238 water bodies across Minnesota -- more than have been searched in any previous year of this event! 

Unfortunately, this year a group of volunteers in Stearns County did discover a previously unknown population of starry stonewort in Carnelian Lake. Minnesota DNR is working with Stearns County and Stearns County COLA to consider management options.

A pair of sharp, young eyes also made an interesting discovery in Briggs Lake (Sherburne County): Corbicula fluminea (often called Asian or golden clam). Minnesota is typically thought to be outside of the thermal tolerance for Corbicula, though we do have a couple populations reported in the Mississippi, St. Croix, and Minnesota river systems. In Minnesota, they are typically found near power plants where cooling water discharge keeps the waters warmer year round. Another Sherburne County lake has turned up some dead Corbicula shells the last couple years, but no live clams, making it a bit unique to have found young, live clams in an inland Minnesota lake. There is not evidence to suggest we should be alarmed by this find, as it’s suspected the long, cold winter months will cause the clams to die off and Minnesota is unlikely to support large, nuisance populations of Corbicula. Sherburne SWCD is currently considering continued volunteer monitoring efforts to help better understand the populations in the county and help with future early detection efforts thanks to this discovery. 

Each year we also get several new reports of Chinese and banded mystery snails that were not yet in the EDDMapS database (a nationwide invasive species reporting system). Not all of these are previously unknown populations, however many of these helped update the database, which is used by DNR and many other agencies to track populations of invasive species, so their discovery and reporting is still important and beneficial. 

There were also some fun and interesting native species finds that are worth mentioning. Volunteers in Lake County found a native milfoil species, Myriophyllum heterophyllum (sometimes called various-leaved or broad-leaved watermilfoil).  M. heterophyllum is a species of special concern in Minnesota and is a fun and rare find! Volunteers in Crow Wing County came across a strange, gelatinous blob. These were freshwater bryozoans! While most bryozoans are found in marine environments, we do have native, freshwater bryozoans in Minnesota.

Year Volunteers Water Bodies Monitored Public Accesses Monitored Starry Stonewort Found (new) Zebra Mussels Found (new) Eurasian Watermilfoil Found (new) Other AIS Found (new) Total New AIS Reports
2017 200 178 211 1 0 1 6 8
2018 222 186 223 2 1 0 2 5
2019 252 234 270 0 0 1 21 22
2020 212 238 292 1 0 0 6 7

About Starry Trek

Starry Trek is a statewide event focused on searching for one of Minnesota's newest aquatic invasive species, starry stonewort (and other invaders). Starry stonewort is an invasive algae that was first found in Lake Koronis in 2015 and has since spread to 14 Minnesota lakes (learn more about starry stonewort and our research here). This event is an opportunity for you and to team up with us and hundreds of your fellow Minnesotans to better understand its distribution in Minnesota. 

What do participants do during Starry Trek?

You will meet at a local training site hosted by one of our local partners where you will receive a brief training on how to identify starry stonewort and other target aquatic invasive species and how to follow the search protocols. Groups are then sent out to nearby priority lakes to follow the protocols and bring back any suspicious organisms. Starry Trek is a free event and no experience or special equipment is required. Participants under the age of 18 must be accompanied by a parent or guardian.


2020 Training Locations


How does participating in Starry Trek make a difference?

In both 2017 and 2018, Starry Trek volunteers discovered new populations of starry stonewort. Follow-up surveys by Minnesota DNR specialists confirmed these new findings in Lake Carnelian (Stearns County, 2020), Wolf Lake (Hubbard County, 2018) Lake Beltrami (Beltrami County, 2018) and Grand Lake (Stearns County, 2017). As a result of the Grand Lake discovery the local lake association and MN DNR teamed up in a rapid response plan to remove the small patch of starry stonewort. Other notable finds by Starry Trek participants include the discovery of a new populations of Eurasian watermilfoil in Winona County (2017) and Aitkin County (2019) and a new zebra mussel population in Dakota County (2018). Over 200 Minnesotans have joined in this effort and searched over 200 public water accesses each year since our inaugural event in 2017.

Who organizes the event?

Starry Trek is organized by the Minnesota Aquatic Invasive Species Research Center and University of Minnesota Extension in partnership with the Minnesota Department of Natural Resources. Funding for Starry Trek is provided in part by the Environment and Natural Resources Trust Fund. Starry Trek is held in coordination with AIS Snapshot Day, an aquatic invasive species search event held in Wisconsin on the same day hosted by the River Alliance of Wisconsin, University of Wisconsin Extension, and Wisconsin Department of Natural Resources.


COVID-19 Information

We have made some changes to how Starry Trek will operate in 2020 to help limit the spread of COVID-19. We want all our participants to be as safe as possible while helping to search for aquatic invasive species. Please be sure to read all these COVID-19 related protocols before registering for this event.

  • Registration is required by August 6, 2020. We will not be able to accommodate late or on-site registration this year as we will need accurate head counts to appropriately plan equipment and social distancing.
  • Social-distancing is required. All participants and local coordinators must maintain at least 6 feet from other individuals who are not from the same household during training and monitoring.
  • All activities will take place outdoors. Because the risk of spreading COVID-19 is significantly lower in outdoors environments, all local training sites are required to be held outdoors this year.
  • No carpooling with individuals from outside your household. Because vehicle travel involves extended period in an enclosed space with limited opportunity for social distancing, we are asking that you do not carpool with individuals who are not part of your household. If you are partnered with a non-household member, you should drive separately to each monitoring site.
  • Participants will not be able to visit monitoring sites alone. This has been a safety protocol for this event since its launch. Because you will be traveling to potentially remote locations and there is no way for the local coordinator to know where you are at any given time, we require a buddy system as a precaution in the event of an emergency. We encourage you to sign up with your family, other members of your household, or individuals within your current social bubble. If you do not sign up with someone else, we will do our best to pair you with another participant. Remember to practice social distancing.
  • We will provide masks and hand sanitizer. Please follow the masking requirements as listed in Executive Order 20-81. We will be providing disposable masks to all registered participants. Participants are encouraged to wear the provided masks or their own masks from home while at the local training site, receiving equipment, or near individuals from a different household, and are required to if within six feet of individuals of different househoulds. Similarly, frequent use of the provided hand sanitizer is encouraged as appropriate. You may choose if you would like to take turns sharing equipment (like plant sampling rakes) or designate duties with your partner to prevent sharing of equipment. If you do share equipment, make sure to use hand sanitizer in between uses.
  • Bring your own water and snacks. We are discouraging community snacks at local training sites this year. It's summer, so be sure to bring water and stay hydrated and bring any snacks you think you may want while participating in this event.
  • Do not come if you are experiencing any COVID-19 symptoms. We're so glad that you want to join in and be a part of this event, but if you are experiencing a fever or any other COVID-19 symptoms, please stay home, get well soon, and we'll hope to see you next year! Please review COVID-19 symptoms on the MDH website here.

Thanks to our 2020 partners! In no particular order:

Todd SWCD, Lake of the Woods SWCD, Cass County Environmental Services, Douglas County Land and Resource Management, Ramsey County Parks, Sr. Croix River Association, Chisago County, Youth Eco Solutions (YES!), Hubbard County Environmental Services, Isanti SWCD, Aitkin County SWCD, AIS Detectors volunteers, Carver County Water Management Organization, Big Stone County 4-H, Forest Lake Lake Association, Crow Wing County Land Services, Stearns County COLA, Sherburne SWCD, Beltrami County Environmental Services, Becker SWCD, Turtle Lake Association, Lake County SWCD, OMNI Brewing Company, Coon Creek Watershed District.


Where have Starry Trek volunteers gone in the past?

Other ways to get involved

If you'd like to get notified when registration opens for Starry Trek, please enter your information in this contact form and we'll add you to our mailing list! Signing up via this form will only add you to emails regarding Starry Trek.


starry trek
starry trek