Invasive species control efforts are paying off, UH report finds

Three biological control programs aimed at tackling invasive species in Hawaii are showing positive economic returns, with two delivering especially strong results, according to a recent economic analysis conducted by the University of Hawaii Economic Research Organization.

The programs target the coffee berry borer, erythrina gall wasp, and fireweed, with all work taking place on the Big Island.

The report found that the biocontrol program targeting the coffee berry borer, a major pest affecting Big Island coffee growers, could deliver up to $42 in benefits for every $1 spent — a benefit-cost ratio of 42 — making it one of the most cost-effective efforts of its kind.

Even under more conservative estimates, the return remains strong at $21 for every $1 invested, with a net economic bene