Target & Watched Species

The New York State Department of Environmental Conservation (NYSDEC) ranks invasive plants and animals by threat level on an ongoing basis through the New York State Ranking System for Evaluating Non-Native Plant and Animal Species for Invasiveness. APIPP further assesses these species using the PRISM Threat Ranking Forms.

Those terrestrial and aquatic invasive species that are present in the Adirondack PRISM and rank “High” or “Very High” under the PRISM ranking process are classified as targets. Target Species are prioritized for APIPP’s ongoing prevention, surveillance, and education and outreach efforts. They are also assessed for potential management and, if pass, classified as management targets.

Species that are present in New York State and have not yet been detected within the Adirondack PRISM, but rank “High” or “Very High” under the PRISM ranking process are classified as Watched Species for APIPP’s ongoing early detection and rapid response efforts. The PRISM threat ranking assessment outcomes for APIPP’s Target and Watched species can be found below.

Target

Watched

Plants

Animals

Plants

Animals

Knotweed species (Reynoutria spp.) Emerald ash borer (Agrilus planipennis) Porcelain berry (Ampelopsis glandulosa) Eurasian Boar (Sus scrofa)
Common reed grass (Phragmites australis) Hemlock woolly adelgid (Adelges tsugae) Slender falsebrome (Brachypodium sylvaticum) Asian longhorned beetle (Anoplophora glabripennis)
Purple loosestrife (Lythrum salicaria) Sirex (European) woodwasp (Sirex noctilio) Wineberry (Rubus phoenicolasius) Quagga mussel (Dreissena rostriformis bugensis)
Japanese angelica tree (Aralia elata) Balsam woolly adelgid (Adelges piceae) Japanese stiltgrass (Microstegium vimineum) Rusty crayfish (Orconectes rusticus)
Mile-a-minute (Persicaria perfoliata) Zebra mussel (Dreissena polymorpha) Hydrilla (Hydrilla verticillata)
Japanese barberry (Berberis thunbergii) Chinese mystery snails (Cipangopaludina chinensis)
Swallow-wort species (Cynanchum louiseae & Cynanchum rossicum) Spiny waterflea (Bythotrephes cederstroemi)
Oriental bittersweet (Celastrus orbiculatus)  Asian clam (Corbicula fluminea)
Lesser celandine (Ficaria verna) Fishhook waterflea (Cercopagis bengoi)
Bush honeysuckles (Lonicera spp.)
Garlic mustard (Alliaria petiolata)
Burning bush (Euonymus alatus)
Common buckthron (Rhamnus cathartica)
Autumn olive (Elaeagnus umbellata)
Multiflora rose (Rosa multiflora)
Norway maple (Acer platanoides)
Scotch broom (Cytisus scoparius)
Cup plant (Silphium perfoliatum)
Reed canary grass (Phalaris arundinacea)
Tree of heaven (Ailanthus altissima)
Yellow iris (Iris pseudacorus)
Glossy buckthorn (Frangula alnus)
Giant hogweed (Heracleum mantegazzianum)
Eurasian watermilfoil (Myriophyllum spicatum)
Variable-leaf watermilfoil (Myriophyllum heterophyllum)
European frog-bit (Hydrocharis morsus-ranae)
Water chestnut (Trapa natans)
Curly-leaf pondweed (Potamogeton crispus)
Fanwort (Cabomba caroliniana)