Creating resilient lands and waters while protecting biodiversity through invasive species prevention and management

The St. Lawrence-Eastern Lake Ontario (SLELO) Partnership for Regional Invasive Species Management (PRISM) is in cooperation with The New York State Department of Environmental Conservation and more than twenty-three regional partner organizations. Our mission is to protect native habitats, biodiversity, natural areas, and freshwater resources by using a collaborative and integrated approach to invasive species management with emphasis on prevention, early detection, rapid response, education, and outreach.

You can help prevent and manage invasive species, too! Join our protectors by taking the Pledge to Protect against invasive species. We’ll arm you with the information you need to protect our region, based on the outdoor environments you live, work and play in. Protectors receive monthly emails with simple steps to take, education on invasive species and badges to share on social media. Read More…

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Our work is a collaborative effort among multiple partners. Our work is focused on priority initiatives identified by our partnership. These priorities guide our strategic planning and actions and are aligned with our mission to protect our lands and waters from the impacts of invasive species.                       Read More.. 


As the SLELO PRISM continues to implement successful and innovative projects, our team has expanded to meet the needs of our program. This increased capacity allows us to deliver more effective and targeted approaches to invasive species spread prevention, early detection, control and management. Learn more about the staff and how our roles tie together to deliver the most successful program possible. Read More..

Discovering populations of invasive species before they become too large to manage, known as Early Detection, gives a strategic advantage to prevention and management initiatives. You can aid early detection efforts in the St. Lawrence Eastern Lake Ontario Region by joining our Invasive Species Volunteer Surveillance Network (VSN), and by joining other volunteer opportunities we offer.  Read More…


Birds as a Habitat Health Indicator

In addition to being extraordinarily wonderful ambassadors for North American wildlife, as biological indicators birds are relatively quick to respond to changes in ecosystem composition, structure, and function; this includes those changes brought by both the invasion and management of invasive species.

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Protector’s Activity: Check Your Property for Invasive Plants

This fall and winter keep an eye out for bittersweet and porcelain berry which are easily identified by their distinctive berries that appear this time of year. These invasive woody vines grow over understory vegetation and strangle trees. Check out this Protector’s blog to learn to recognize these invasive plants and steps you can take now to get a head start on controlling them before the next growing season.

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Virtual Hike Challenge

SLELO PRISM will hold our annual Virtual Hike Challenge (VHC) again this winter. The challenge, happening November 2023, through March 2024, pairs winter hiking with simple instructions to help keep an eye out for hemlock woolly adelgid (HWA). HWA is an invasive forest pest that is confirmed to be present in Oswego County and is spreading along the Eastern Lake Ontario shoreline.

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Species Spotlight: 2023 Autumn Newsletter

Microstegium vimineum, commonly known as stiltgrass, is native to East Asia and the Caucasus mountains. When introduced to an area, stiltgrass has the ability to take over, crowding out ecologically important species.Learn more about stiltgrass and best management options.

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Partner Spotlight: 2023 Autumn Newsletter

More than 600 middle school students in districts from Jefferson, Oswego, Monroe, and Niagara counties participated in both classroom and hands-on educational experiences focused on monitoring water quality and habitats in the Lake Ontario-St. Lawrence River watersheds.

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VSN Story Map Update

Recently, SLELO PRISM updated its VSN webpage with a more modern, user- friendly web mapping experience. The new application provides species identification information and suggested survey sites for six focal species: hemlock woolly adelgid, spotted lanternfly, elm zigzag sawfly, porcelain berry, fanwort, and tench.

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Elm Zig-Zag Sawfly Update

Elm zigzag sawfly (Aproceros leucopoda), an exotic pest native to East Asia that feeds exclusively on elm species, has been detected in many locations across New York State this season. EZS was first detected in St. Lawrence County in August 2022. Since, it has been found in Allegany, Ontario, Madison, Ulster, Schenectady, Albany, Saratoga, Warren, and Clinton, with new counties being confirmed weekly.

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