Curious about which #GreatLakes #AIS have the most severe or wide-ranging impacts across the basin? Check out this paper from MISG's #GLANSIS team about the top 10 aquatic invaders in our region! #NISAW

Bringing back some of the #GLANSIS team's greatest for #NationalInvasiveSpeciesAwarenessWeek: here's some great coverage of last year's landmark paper on the top 10 most impactful #GreatLakes #AIS!
#NISAW

Join the #GLANSIS team in Winnipeg next year at the joint #IAGLR & #SCAS-SCSA conference!

Our #GLANSIS program manager and I will be chairing Session 19 at IAGLR 2026, though ours is apparently one of SEVERAL invasive species-themed sessions — we’ve got strong overlap with sessions 18 and 52 proposed by our Canadian colleagues, so perhaps we can put our heads together and collaborate!

The #GLANSIS team will be chairing Session 19: Invasive Species Research and Communication! Submit your abstract soon and come join us in Winnipeg!

More information about #GLANSIS!!

I’ll be here all week along with my #GLANSIS teammates — come see us at the poster session, Friday’s invasive species session, or at the Sea Grant booth. (I’m pretty easy to spot — just look for the most loudly-patterned botanical- or fish-patterned shirt in a given room and come say hi!)

Screenshot from Presidential Memorandum: "The Administrator of the National Oceanic and Atmospheric Administration (NOAA) and the Director of the United States Fish and Wildlife Service, through their joint operation of the Aquatic Nuisance Species Task Force, shall prioritize support for research and management concerning the prevention, removal, and management of aquatic invasive species in the Great Lakes, including invasive carp. The Administrator of NOAA shall also prioritize this objective through the Great Lakes Aquatic Nuisance Species Information System and NOAA’s research and information-sharing work related to the growth and spread of aquatic invasive species."

Without our many federal, state, cooperative institute, and university partnerships, it would be impossible for the #GLANSIS team to fulfill our mission to provide the best possible invasive species data to scientists, environmental managers, legislators, and the public.

GLANSIS banner.

...including @umich.edu , @michiganstateu.bsky.social , @loyolachicago.bsky.social , @cornelluniversity.bsky.social , @sunyofficial.bsky.social , @waynestateresearch.bsky.social , @umnextension.bsky.social , and many more (including those not on Bluesky). Thanks for being amazing #GLANSIS partners!

A black carp being measured. Photo by U.S. Geological Survey Columbia Environmental Research Center.

Black carp (Mylopharyngodon piceus) are large, dark-colored fish that eat aquatic invertebrates like mussels and snails. This species can consume up to 20% of their body weight in prey per day, posing a threat to native invertebrates. Learn more at #GLANSIS: nas.er.usgs.gov/queries/grea...

A bighead carp. Photo by US Fish and Wildlife Service.

Bighead carp (Hypophthalmichthys nobilis) are similar to silver carp, distinguished by their low-set eyes and notably large heads. These fish outcompete native species for nutrients and can produce over a million eggs at a time. Learn more on #GLANSIS: nas.er.usgs.gov/queries/Grea...

A silver carp leaps dramatically out of the water.

Silver carp (Hypophthalmichthys molitrix) are filter feeders that outcompete native species for plankton. They're notorious for leaping out of the water when startled by boat motors, which can injure passengers on board. Learn more at their #GLANSIS profile: nas.er.usgs.gov/queries/grea...

A researcher holds a football-sized grass carp. Photo by US Fish and Wildlife service.

Grass carp (Ctenopharyngodon idella) are large herbivorous fish whose voracious appetites reduce aquatic plant populations, decrease water quality and food for native fish, disrupt the food web, and more. Read more on their #GLANSIS species profile here: nas.er.usgs.gov/queries/grea...

The fish commonly known as #InvasiveCarp are four separate species: grass carp, silver carp, bighead carp, and black carp. An overview of their impacts + ongoing management efforts is featured in an episode of the #GLANSIS video series “Managing Great Lakes Invaders”. www.youtube.com/watch?v=RKaW...

Protecting the Great Lakes from Invasive Carp MEMORANDUM FOR THE SECRETARY OF THE INTERIOR               THE SECRETARY OF

The #GLANSIS program was recently recognized in a Presidential Memorandum for our work protecting the #GreatLakes from #InvasiveCarp. Here's a 🧵 showcasing our species profiles + highlighting our partners who make the work of stopping Great Lakes AIS possible... www.whitehouse.gov/presidential...

A spotted lanternfly with wings outspread, recognizable for the black spots and bright orange lower wings

A scientific illustration of the spiky blade-shaped leaves and white lotus-like flower of hydrilla

Some excellent topics coming up in EGLE's NotMISpecies webinar series! Detecting invasive plants tucked underwater, an unconventional response to hydrilla, the squishable spotted lanternfly, and more: buff.ly/rZvghrQ #GLANSIS

Following the Great Lakes’ Most Unwanted GLANSIS Database Keeps Tabs on Biological Invaders The mouth of an invasive sea lamprey, one of the most notorious Great Lakes invasive species. Photo credit: Dave Brenner, Michigan Sea Grant. The …

How do researchers keep track of the nearly 200 nonindigenous aquatic species introduced to the #GreatLakes? This new blog post from NOAA GLERL, courtesy of partners at Michigan Sea Grant, highlights the #GLANSIS database, a one-stop shop for information about aquatic invaders!

Managing Great Lakes Invaders (GLANSIS video series) The Great Lakes are one of the most unique freshwater systems in the world. Millions of people love the Great Lakes -- and so do many invasive species. Check...

Thank you to all of our partners and reviewers who contributed to the #AIS video series we shared last week for #NISAW – we couldn’t have done it without you! You can find the complete #GLANSIS Invasive Species Video Series here at the link:

Here’s a perfect article for #NationalInvasiveSpeciesAwarenessWeek, and I’m not just saying that because I’m the lead author on the paper in question! 😉 Click through for some super cool data visualizations and learn more about the work my team at #GLANSIS does to stop aquatic invaders! #NISAW

GLANSIS banner with collage of invasive species.

Want to learn more about these #GreatLakes #AIS? Then check out #GLANSIS, which serves as a “one-stop shop” for more info about aquatic invaders. Find ID guides, life history, maps, risk assessments, and more – and share your data with us, too! https://buff.ly/3BvQbkX #NISAW

Screenshot of a youtube video showing the outline of the Great Lakes, with the caption "The Great Lakes are one of the most unique freshwater systems in the world."

For #NationalInvasiveSpeciesAwarenessWeek (2/24-2/28), we’re featuring a #GLANSIS animated video series about #GreatLakes #InvasiveSpecies, ft. invasive carp, sea lamprey, mussels, ballast water invaders, + more, and how regional partners work together to stop them. Stay tuned! #NISAW

….I’ll be honest, y’all, it’s tough to be my team’s comms specialist right now: I would truly love to spend all my time telling you about our amazing work at #GLANSIS and how we can protect our Great Lakes from invasive species, but current events are making even bigger threats apparent. 🫠

Contribute to GLANSIS: NOAA Great Lakes Environmental Research Laboratory - Ann Arbor, MI, USA Information from NOAA-GLERL

Do you have #GreatLakes #AIS data you’d like to share? Contact the #GLANSIS team to do so -- you can also direct us to additional resources or contribute to our peer review process! https://buff.ly/41mdtYU #InvSpWk #NISAW

GLANSIS risk explorer evaluates the potential for Great Lakes biological invasions The Risk Assessment Clearinghouse makes it easier for scientists and environmental managers to compare and contrast cutting-edge risk information to inform their own decisions.

The #GLANSIS Risk Assessment Clearinghouse lets users access and compare #GreatLakes #AIS risk literature, including assessments, methods and results, from collaborators in the region. Learn more at the link: https://bit.ly/3tQX7EN #InvSpWk #NISAW

The GLANSIS Map Explorer: Tracking Great Lakes Invaders The Great Lakes Aquatic Nonindigenous Species Information System (GLANSIS) is a user-friendly information portal designed specifically for the Great Lakes basin, using verified reports to document…

The #GLANSIS Map Explorer lets users view species distributions, generate custom maps, and explore habitat relationships with additional map layers from our partners. Learn more about this tool here: https://bit.ly/3p9BdsY #NISAW #InvSpWk

Database provides a diverse toolkit for the fight against aquatic invaders Learn how to use the online List Generator to find what species have become established in your watershed.

The #GLANSIS Species List Generator allows users to generate custom lists of #AIS reported in their geographic area, and access profiles of each of these species that detail ID, ecology, impacts, management and control info. Learn more about this tool: https://bit.ly/2Z9ReEv #NISAW

A screenshot of the GLANSIS database landing page.

Today we're highlighting @NOAA #GLANSIS to explore data on #GreatLakes #AquaticInvasiveSpecies! From species profiles to risk assessments to map data, GLANSIS makes historical data + cutting-edge research on #AIS available to scientists + the public. https://buff.ly/3BvQbkX

The GLANSIS database logo against a collage of aquatic invasive species.

#GLANSIS is a Great Lakes-specific hub of the USGS NAS database, and has data-sharing agreements with #MISIN, #EDDMapS, #iMapInvasives, and more to track #AIS in the #GreatLakes basin. Explore GLANSIS for yourself here: https://buff.ly/3BvQbkX #InvSpWk #NISAW

GLANSIS: A ‘one-stop shop’ for information on aquatic invaders National Invasive Species Awareness Week, Part 2: The Great Lakes Aquatic Nonindigenous Species Information System provides profiles, maps, and further reading for scientists and citizens alike.

Next week (2/24-2/28) is #NationalInvasiveSpeciesAwarenessWeek! Stay tuned as we feature content from #GLANSIS: a database hosting maps, ID, ecology, management, control, risk info, and more for 180+ #AIS in the #GreatLakes region. Learn more here: https://bit.ly/3qg28Vr #InvSpWk #NISAW

Boosting again — come help the #GLANSIS team review our #GreatLakes #AquaticInvasiveSpecies risk assessments and species profiles for #AIS (and get paid for doing so!)