A watershed decision support tool for managing invasive species on Hawai‘i Island, USA

•Developed a decision support tool (DST) for forested watersheds on Hawai‘i island.•The DST targeted enhancing or protecting water yield by managing strawberry guava.•Water yield modeled across several invasion and climate change scenarios.•DST prioritization was similar across scenarios despite variability in water yield.•We found limited access to high priority areas restricts current management goals.