Management Targets

From its list of Target Species, APIPP further prioritizes species for management based on threat level, known distribution, and most importantly, ability to be effectively controlled. Not all species have effective control options and others are already widespread and provide limited opportunity to achieve long-term success or prevent reinvasion even if management occurs.

APIPP uses the scores from the New York State Ranking System for Evaluating Non-Native Plant and Animal Species for Invasiveness and PRISM Threat Ranking Forms to complete a Manageability Scoring Matrix. Those Target Species that score high in the matrix (above 42 points) are prioritized for APIPP’s ongoing rapid response and control efforts. The full list of APIPP’s management targets can be found below.

Terrestrial Management Targets Aquatic Management Targets
Knotweed species (Reynoutria spp.) Water chestnut (Trapa natans)
Giant hogweed (Heracleum mantegazzianum) Eurasian watermilfoil (Myriophyllum spicatum)
Common reed grass (Phragmites australis) Variable-leaf watermilfoil (Myriophyllum heterophyllum)
Scotch broom (Cytisus scoparius) Fanwort (Cabomba caroliniana)
Purple loosestrife (Lythrum salicaria)
Yellow iris (Iris pseudacorus)
Tree of heaven (Ailanthus altissima)
Lesser celandine (Ficaria verna)
Norway maple (Acer platanoides)
Garlic mustard (Alliaria petiolata)
Swallow-wort species (Cynanchum louiseae & Cynanchum rossicum)
Japanese barberry (Berberis thunbergii)
Mile-a-minute (Persicaria perfoliata)
Japanese angelica tree (Aralia elata)

Infestations of target management species are then organized into potential management projects based on the conservation, economic or societal asset that APIPP is seeking to protect, and evaluated using The Nature Conservancy’s Invasive Plant Management Decision Analysis Tool (IPMDAT). Those that “Proceed” are adopted as APIPP management projects.

The program continues to develop and provide management guidance for other lower ranking species and addresses infestations of these species on a case by case basis.