One key finding is just how disproportionate the impacts are. Between 1980 and 2019, invasive species caused more than $11.7 billion in damages across US and US-affiliated islands. When adjusted for land area, that’s five times higher per square kilometer than on the US continent. Islands import most of their food and goods, rely heavily on tourism and military transport, and often have limited resources to respond when new pests arrive.

But the paper also shows that the biggest challenges are not about a lack of tools or knowledge. This research, led by Pacific RISA PI Laura Brewington as part of her service on the US Invasive Species Advisory Committee, identifies three lessons that apply not only to US islands, but to island nations around the world. First, local capacity and trust determine whether efforts succeed. Programs that invest in local jobs, training, and community engagement are more likely to detect invasions early, while long-term support of island-led research, workforce development, and implementation supports sustained management as climate extremes intensify. Second, prevention at ports of entry matters. Airports, seaports, and shipping routes are the main gateways for invasive species. When inspections are inconsistent or under-resourced, new pests slip through—and the costs multiply later. Third, long-term control tools are essential but often underused. Islands have successfully applied biological control, targeted chemical treatments, and ecosystem restoration, but these approaches are frequently limited by short-term funding or regulatory delays. Expanding access to conservation-relevant tools and investing in restoration infrastructure also both increase ecosystem resilience following disturbance.

“In many cases, the science exists and the solutions are known,” says lead author Laura Brewington. “The real challenge is making sure systems are in place to prevent invasions in the first place and to act quickly and effectively when they occur.”

The paper also highlights promising examples, from interagency agreements in the Pacific to biofouling controls in Australia and community-driven biosecurity efforts in Mexico. These cases show that coordination and sustained investment can make a real difference. Islands are often described as “sentinels” for environmental change. But in the case of invasive species, they are also shields—protecting surrounding regions from further spread. Strengthening island biosecurity isn’t just an island issue. It’s a global one. Download the paper here.

Featured image: Sunset over Tumon Bay, Guam. Credit: Laura Brewington

]]> 7326 https://www.pacificrisa.org/2024/03/18/palau-climate-services-and-coordination-workshop/ Mon, 18 Mar 2024 19:38:09 +0000 https://www.pacificrisa.org/?p=6541 Read More]]> As part of Pacific RISA’s UNEP CIS-Pac5 research program on climate information and early warning systems, the team convened a Sector-based Climate Services and Coordination Workshop in Koror, Palau from February 26 to March 1, 2024. The workshop was funded by the Green Climate Fund and hosted by the US National Oceanic and Atmospheric Administration, Pacific RISA, and the University of Hawaii in partnership with the Palau Ministry of Finance Bureau of Budget and Planning, Palau Office of Climate Change, and the Palau Weather Service Office.

“The challenges of climate change aren’t coming–we are living them”

~President Surangel Whipps of Palau

The workshop aimed to both facilitate the development and delivery of locally relevant and impact-driven climate early warning products to support sector-based decision-making in Palau and foster increased alignment and coordination of climate projects in country, including within the UNEP CIS-Pac5 as well as across other partners, such as the Local 2030 Islands Network.

To develop Climate Early Warning Systems (CLEWS), Pacific RISA followed the Pacific Islands Dialog process that was developed by NOAA in collaboration with USAID throughout the Pacific Islands region. Participants heard stories about climate events and impacts in Palau and engaged in interactive breakout activities to construct historical timelines and maps: creating a dataset of the “where and when” of those events and impacts that would later serve as a template for creating prototypes of sector-specific CLEWS for agriculture and health.

During the week, the Local2030 Islands Network celebrated the launch of a new Palau Green Growth Dashboard, a public-private partnership to track Palau’s progress toward locally-relevant sustainable development goals. Pacific RISA collaborators from the University of Guam’s Center for Island Sustainability and Guam Green Growth were present for the launch and were central to the development of Palau’s dashboard. Additional workshop sessions were dedicated to presentations by partners in the UNEP CIS-Pac5 program and discussions around how to harmonize data, as a means to support communication, coordination, and collaboration across projects and initiatives within Palau, and elevate the important messages from the week. Throughout the workshop, local artist Janine Tewid created a live graphic interpretation of the CLEWS discussions, which was unveiled at a reception held the evening of February 29.

Featured image: the Rock Islands of Palau. Photo by Krista Jaspers.