Invasive Species Action Network

06/03/2026

On your next paddling adventure, check out the nearest cleaning station, and be sure to your gear. Help protect our water resources, and have a positive impact on the places we love. Be a Pain in the ANS and stop aquatic invaders.

Learn more and take action: cpw.info/PainIntheANS 🌞🛶💙

06/02/2026

THIS WEEKEND, join ISAN at Lake Sakakawea, North Dakota, for a fun weekend learning about responsible recreation on the lake!💙🛶

We'll be discussing all things aquatic nuisance species (ANS), giving away prevention tools, and helping folks clean their equipment. Once ANS are introduced to a waterbody, they are extremely hard to remove and can drastically change the waters we love. As outdoor recreationists, we have a responsibility to protect our favorite places from ANS.

If you’ll be around Lake Sakakawea, be sure to stop by and visit ISAN and their partners to learn more about ANS prevention, boating best practices, and, of course, grab some free prevention tools!

06/01/2026

Join the Woody Invasives Working Group for a River Tour on Thursday, July 16, 2026 in Billings, Montana.

In the morning a limited number of spots are available to board jet boats to see firsthand the negative impacts that woody invasive species have on riparian ecosystems along the Yellowstone River. Seats are limited and these spots will be filled on a first-come, first-served basis. RSVP as soon as possible to reserve your seat on a boat!

In the afternoon, lunch will be provided followed by presentations and a panel discussion regarding impacts of woody invasive species to Montanans’ way of life. This portion is open to all, but RSVP is still required.

Go to https://www.eventbrite.com/e/wiwg-river-tour-tickets-1988409960719?aff=oddtdtcreator&keep_tld=true to RSVP by June 30th. See you there!

An opportunity to view and learn about the negative impacts of woody invasive species in Montana.

05/29/2026

Happy Friday, all!💙🌞

Did you know that an invasive (zebra or quagga) mussel infestation would cost Montana MILLIONS! A study from 2019 estimated up to:

-$112M in lost revenue
-$122M in mitigation costs
-$497M in property value loss

You can prevent the spread of invasive mussels and other aquatic invasives by practicing every time you recreate on the water.

05/28/2026

to our recent field day with Valley Falls Schools. We partnered up with Kansas Department of Wildlife & Parks and others to talk with students about invasive species, macroinvertebrates, native plants, and more! It was a hot day at the marsh (especially in the afternoon), but the students really stuck with us! 🔅

One of our partners added that the event reminded them of "the power of educating young students, we don't get to interact with K-12 students often and their energy is infectious." We couldn't agree more! This is just one piece of our Chickadee Checkoff grant project - stay tuned for more updates.

05/27/2026

Next week, join ISAN at Lake Sakakawea, North Dakota, for a fun weekend of boating and learning about responsible recreation!🌿🚣‍♀️💦

We'll be at boat ramps around the lake, discussing all things invasive species, giving away prevention tools, and helping folks clean their equipment. When you’re out on the water this summer, don’t forget to between waterbodies. And remember, stopping at watercraft inspections is a must for boaters of ALL types in North Dakota.

If you’ll be around Lake Sakakawea, be sure to stop by and visit ISAN and our partners to learn more about ANS prevention, boating best practices, and, of course, grab some free prevention tools.

05/25/2026

Happy Memorial Day! Today, we honor those who gave their lives while serving. And we’re thinking of those who have lost someone they love.

We hope you enjoy the day with your loved ones and remember those who served and sacrificed. If you plan on spending the holiday out on the water, don't forget to practice clean, drain, dry to protect the places we all love. Happy Memorial Day!❤️💙

05/22/2026

As Emerald Ash Borer Awareness Week comes to a close, we thought that we would remind everyone why it's important not to move firewood.

Many wood-boring invasive species spend the majority of their life underneath the bark of a tree. When a tree is turned into firewood, these individuals can remain alive in the wood. When this material is transported to a new area, the invasive species hidden within the relocated firewood can emerge as adults ready to infest the surrounding forest.

Learn more at dontmovefirewood.org.

05/20/2026

S-shaped tunnels, d-shaped exit holes, bark splits, and crown dieback can all be signs of emerald ash borer (EAB) infestation.

Learning these symptoms of EAB infestation and regularly checking your ash trees is one easy way you can prevent the spread of EAB and other damaging forest pests. If you notice a suspicious tree or insect, report it at iNaturalist.org.

05/18/2026

Happy Emerald Ash Borer (EAB) Awareness Week!🍃💚

As an invasive forest pest, EAB lacks predators to keep it in check. Once an ash tree is infected, it is very difficult to save the tree, and most die within 3 to 5 years. Luckily, this pest cannot infest any trees other than ash. This week, we encourage you to learn about the signs and symptoms of EAB, how to prevent the spread, and what you can do to help.

-Don’t move firewood. Instead, burn it where you buy it. Invasive insects are transported by humans, often in firewood.
-Learn how to identify ash trees and identify signs of infestation.
-As always, if you have a suspicious tree or insect, report it to .

Find more information at DontMoveFirewood.org.