BELÉM, Brazil, Dec 17 2025 (IPS) - On the Pacific Islands, where the ocean horizon is both a lifeline and a warning, communities have long interpreted environmental change through traditional knowledge, lived experiences, stories, and practice. Their observations echo those across the Pacific region, where traditional knowledge remains central to understanding shifting environments and responsible stewardship.

This grounding shaped the early work of Coral Pasisi, Director of Climate Change and Sustainability at the Pacific Community (SPC)—the region’s scientific and technical organization—and it is these experiences, including those from her home country of Niue, that anchor her lived realities and values to her work across the Pacific.

She remembers the early years of her scientific career, going from village to village with a laminated satellite image stitched with the cadastral base of roads and buildings, a few colored pens in hand, asking communities to add what they remembered.

“In times of drought, where were your main water source and caves? What areas remain important to protect as traditional medicines gathering or food security? Where are the traditional sites of ‘tapu’ and graves? And please mark where you remember waves reaching in the big cyclones experienced as far back as you can remember,” says Pasisi, explaining that they used the information to add important information into the Geographic Information System (GIS) to help understand environmental change and inform development resource use management plans.

“So, in one database, you have traditional knowledge, lived experience, and modern science together as a tool for governments and communities to make decisions.  It also provided certainty for development and investments the villages were seeking to advance their sustainable development aspirations.”

In a region where most countries and territories are Indigenous-run, the knowledge held by those with generations of traditional wisdom is science—it’s just verified in a different way than modern science. It enhances formal scientific data, giving countries twice as much information to track change and calibrate understanding.

“SPC probably has the world’s most advanced fish monitoring systems in the Pacific region. But we can’t take that data alone because there are always going to be some gaps, so it’s important that community knowledge and experience are also factored in to informing the state of fisheries in the region,” Pasisi adds.

“Pacific People are great storytellers, especially fishing folks, as I am one! But when you document those stories, including old photos, you can stitch together a timeline of the sizes of fish that were caught at different periods, the species of fish, and what they ate, and all of a sudden, you have this incredible documented knowledge from traditional practitioners that you can combine with the modern science and information.”

“So traditional knowledge and practice is basically applied science that has been refined over the years. It is just verified in different ways,” she says.

But climate change is making it harder for Indigenous people to apply this knowledge and anticipate change and response, because much of that knowledge was “tied to predictable seasons and patterns of occurrence, but those are going a little crazy now with climate change. In the Pacific, this loss of predictability affects food systems, freshwater access and coastal safety across all 22 Pacific Island Countries and Territories.  It even affects our five metropolitan members, but they have built modern systems of early warning, remote sensing and disaster management that are calibrated to cope better with the rapidly changing environment we are now in.”

The destabilization of once-reliable environmental signals has strengthened the region’s insistence that global action must align with the scientific findings of the Intergovernmental Panel on Climate Change (IPCC), which show that surpassing 1.5°C dramatically increases risks to reefs, fisheries, health and entire island ecosystems and territories.

This science underpins why Pacific countries place such emphasis on strong climate agreements and multilateral cooperation and accountability. A hard-won Advisory Opinion from the International Court of Justice (ICJ) reinforced this, affirming that keeping warming below 1.5°C is not just a political aspiration but a legal obligation rooted in international law.

“I think the ICJ Advisory Opinion is going to continue to play a very significant role in influencing the outcomes of the COP that was held in Brazil and all COPs to come.  There is nothing like the clarification of existing law and responsibility to help stakeholders stay on the right side of the law.  Frankly, the consequences of not doing so present much greater risks than litigation.  The highest price is existentiality and our region is on the front lines of that.”

“It’s highly beneficial, and it just gives, I think, a level of authority to the positions that our countries have held for a long time but which are often shot down by the ambiguity of interpreting agreements and responsibilities to deliver on those.  The capacity constraints of Pacific SIDS mean they are often up against huge delegations from larger countries that come with lots of fancy people who bring fancy language in and make all these very fancy arguments about what is legal and what isn’t,” Pasisi adds.  “The ICJ AO levels the playing field somewhat in that we don’t all need to be lawyers to understand what our responsibilities are and what the consequences of inaction could be; the highest court in the world has now done that for us.”

“There are many developed and developing countries that believe that this is an important tool in the international toolkit of global responsibility to help steer the world in the right direction.”

Pacific youth have echoed this call. The entire United Nations family supported the call for the ICJ AO process, and, at COP30, Pacific leaders, officials, partners and youth highlighted its value in upholding critical planetary tipping points like the 1.5°C limit in global warming underpinned by the best available science of the IPCC, reminding the world that decisions today will shape the survival, culture and sovereignty of future generations.

Climate finance was a major focus at COP30 as countries negotiated how to advance the implementation of the New Collective Quantified Goal on Climate Finance. The approval of the Belém “Mutirão” decision was a significant step, establishing a two-year work programme and recognizing the need to dramatically scale up climate finance.

For Pacific Small Island Developing States, however, the question is not only whether climate finance increases but also whether countries can actually access it. Many do not have the staffing, systems or financial structures required by major international funds. Without simplified and equitable access, Pasisi notes, increased pledges will not reach the places where they are most urgently needed.

These concerns were strongly voiced during the final plenary in Belém. Vanuatu’s Minister for Climate Change, Hon. Ralph Regenvanu, acknowledged the difficulties of the negotiations.

“We recognize that we did not get everything we wanted at this COP, but we also know that this is the nature of our processes, and we continue to move forward together in solidarity towards what science requires, what justice demands, and what our people deserve,” he said.

He reminded the world that current pledges do not keep warming below 1.5°C “as science and equity demand,” and that future negotiations and actions must address this gap honestly.

Looking ahead, COP31—co-hosted under the joint leadership of Australia—will include significant participation from Blue Pacific countries. A major pre-COP event is expected to take place within the region, focusing on the ocean, energy transition, and climate finance, amongst other things. The importance of capitalizing the Pacific Resilience Facility within the solutions of addressing the complex climate finance landscape of access for the region was spotlighted.

“In relation to the ocean, we really need people to understand the holistic value of that natural blue capital and infrastructure.  Whilst our  countries are on the front line of climate change, they are also holding the front line by protecting large swaths of intact marine ecosystems that play a huge role in planetary stability—from biodiversity to climate change,” Pasisi says.

“It seems very unjust that Pacific countries and territories on the front line cannot access the resources needed to respond to climate change and sustainably protect their large ocean real estate. So, informing that narrative from a Pacific lens is critical, showcasing not just the extreme manifestations of the impacts of climate change, but also the positivity and innovation that comes from there, this is what our region is very keen to showcase.”

And she says it is not just about this generation, but the “rights of future generations—it’s our children’s earth that we are  mortgaging right now.”

Her message echoes the wider Pacific call: climate action must be grounded in science, guided by justice, and shaped by the lived realities of Pacific communities. As seas rise, storms intensify and ecosystems shift, the combination of traditional knowledge, modern science and intergenerational leadership has become one of the Pacific’s strongest contributions to global climate diplomacy,  and one the world is increasingly recognizing as essential.

IPS UN Bureau Report

Excerpt:

We need people to understand the holistic value of that natural blue capital and infrastructure. Whilst our countries (in the Pacific) are on the front line of climate change, they are also holding the front line by protecting large swaths of intact marine ecosystems that play a huge role in planetary stability—from biodiversity to climate change. —Coral Pasisi, SPC’s Director of Climate Change and Sustainability