A UK-led international conservation fund has reported the first measurable signs of recovery in the world’s mangrove forests, which have suffered decades of systematic destruction. The Mangrove Breakthrough initiative, launched by the UK government in partnership with the Global Mangrove Alliance, announced that satellite data and on-the-ground surveys show a net increase in mangrove cover across key regions for the first time since systematic record-keeping began in 1996.
The restoration gains are concentrated in Southeast Asia, West Africa, and parts of Latin America. Indonesia, which holds over a fifth of the world’s mangroves, has recorded a 3.2 percent net increase in cover since 2020, following a nationwide moratorium on conversion of mangroves to shrimp farms and palm oil plantations. Similar reversals have been noted in Nigeria and Ghana, where community-led replanting programmes have been scaled up with international funding.
The fund, which has mobilised over £850 million since 2021, attributes the turnaround to a combination of legal protections, economic incentives for local communities, and large-scale replanting using improved techniques. Mangroves are critical carbon sinks, storing up to five times more carbon per hectare than tropical forests. Their root systems also protect coastlines from storm surges and provide nursery grounds for fish stocks worth an estimated £40 billion annually to global fisheries.
Dr. Helena Cartwright, the lead author of the assessment and a marine ecologist at the University of Cambridge, said the data suggests that while the overall area of mangroves is still far below pre-industrial levels, the trend has shifted from loss to net gain. “We are now seeing the first signs of a genuine reversal,” she said. “The challenge will be sustaining this progress against ongoing pressures from aquaculture, urban expansion, and climate change.”
The report acknowledges that restoration efforts have not succeeded everywhere. In Myanmar and parts of Central America, mangrove loss continues at alarming rates due to illegal logging and weak enforcement. The fund has called for stronger cross-border cooperation and the inclusion of mangroves in national climate pledges under the Paris Agreement.
Environmental groups have cautiously welcomed the findings. Greenpeace International noted that while the recovery is encouraging, it must not distract from the need to protect existing, intact mangroves. “Restoration is not a substitute for conservation,” said its forests campaign lead, Marta Giraldo. “These ecosystems take decades to recover fully, and many of the newly planted trees are still vulnerable.”
The UK Foreign, Commonwealth and Development Office, which coordinates the fund, described the report as a vindication of its approach. A spokesperson said: “This shows that targeted international investment, combined with local ownership, can reverse environmental degradation at scale. The UK will continue to champion mangrove restoration as a cost-effective solution to climate adaptation and biodiversity loss.”
The findings come ahead of the UN Climate Conference, COP29, in November, where mangroves are expected to feature prominently in discussions on natural climate solutions.
