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PRIORITY INVASIVES

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Great Lakes Center, SAMC 319
SUNY Buffalo State
1300 Elmwood Ave., Buffalo, NY 14222

wnyprism@buffalostate.edu
(716) 878.4708

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Invasive Species Prioritization

WNY PRISM invasive species priority lists were developed by our Terrestrial and Aquatic Working Groups. Over the years the prioritization process has changed, but the involvement of partners in the effort remains the same.

Working Groups communicate through in-person meetings, conference calls/webinars and email. If you are interested in being part of our Working Groups, please contact Andrea Locke, WNY PRISM Coordinator at lockeas@buffalostate.edu.

Invasive Species Prioritization Tiers

The New York State Invasive Species Program has put in place a tiered ranking system for invasive species, to provide strategic management recommendations and prioritization assistance for partners and the public. WNY PRISM conducts comprehensive reviews of species tier rankings on a biennial basis, with the assistance of our partners and working groups, while also conducting periodic reviews as new information emerges. If you would like to be part of WNY PRISM’s Terrestrial and Aquatic Working Groups, to assist with this effort, please email us at wnyprism@buffalostate.edu.

Tier rankings are selected based on several criteria, primarily species presence and distribution within a designated area, in this case the WNY PRISM Region, and manageability. The system is scalable, so while the WNY PRISM rankings consider the entire 8-county geography that makes up the WNY PRISM Region, property managers can easily assign tiers to species based on their own site. For example, a species may be Tier 3 on a WNY PRISM level, but if that species is only present in small numbers that allow for site eradication to be feasible, it may be a Tier 2 species, and higher priority for you.

WNY PRISM Tier Rankings (groups in alphabetical order by common name) – updated October 2024

WNY PRISM Tier Rankings (groups in alphabetical order by scientific name) – updated October 2024

NYS Invasive Species Tier Ranking Chart

In addition to tier rankings, WNY PRISM maintains priority species lists for approaching region/watchlist (Tier 1) and early detection (Tier 2) species, to further assist with prioritizing management efforts. WNY PRISM also selects a rotating list of four species on which to focus survey efforts on within a given year, to improve presence and distribution data within iMapInvasives. We refer to these as our ‘data gap’ species.

WNY PRISM Species Priorities 2025

Early Detection Priorities

1. Ampelopsis glandulosaPorcelain Berry
2. Brachypodium sylvaticumSlender False Brome
3. Cytisus scopariusScotch Broom
4. Lycorma delicatulaSpotted Lanternfly
5. Oshuna crassipesWater Hyacinth
6. Persicaria perfoliataMile-a-Minute
7. Phellodendron amurenseAmur Corktree
8. Pistia stratiotesWater Lettuce
9. Procambarus clarkiiRed Swamp Crayfish
10. Salvia glutinosaSticky Sage

Approaching Region Priorities

1. Impatiens glanduliferaPolicemen's Helmet
2. Ludwigia peploides spp. glabrescensFloating Primrose Willow
3. Myriophyllum aquaticumParrot Feather Watermilfoil
4. Oplismenus undulatifoliusWavyleaf Basketgrass
5. Stratiotes aloidesWater Soldiers

Data Gap Species Priorities

1. Acer pseudoplatanusSycamore Maple
2. Aproceros leucopodaElm Zigzag Sawfly
3. Rhodotypos scandensBlack Jetbead
4. Rosa rugosaRugosa Rose