A global study has found that expanding protected mangrove areas by a relatively small amount could significantly strengthen their resilience to climate change. Researchers report that a 7.3% increase in protected mangrove areas, if strategically located, could raise the resilience of global mangrove networks by about 13.3%.

The research highlights that protecting the right locations—rather than simply expanding conservation areas broadly—can improve mangrove ecosystems' ability to adapt to climate pressures such as sea-level rise and coastal development.

Mangrove forests grow along tropical and subtropical coastlines and play a crucial role in coastal ecosystems. They provide habitat for marine species, act as natural carbon sinks and help protect shorelines from storms and erosion.

Why mangroves matter for coastal environments

Mangroves are widely recognised for their ecological and protective functions. Their dense root systems stabilise coastal sediments and reduce the impact of waves and storm surges. These forests also support fisheries by serving as breeding grounds and nurseries for many fish and shellfish species.

In addition, mangroves store large amounts of carbon in both vegetation and soil, making them important ecosystems for climate mitigation.

However, mangrove forests face multiple threats. Coastal development, aquaculture expansion and infrastructure projects have contributed to habitat loss in several regions. Rising sea levels and changing climate conditions add further pressure on these ecosystems.

Because mangroves depend on specific coastal conditions to survive, environmental changes can limit their ability to migrate inland or adapt to new conditions.

Many mangroves are protected, but not always strategically

The study notes that around 43% of the world’s mangrove forests are already located within protected areas. However, these conservation zones were not always designed with future climate impacts in mind.

Some protected mangrove areas are located in regions that may become less suitable for mangrove survival as sea levels rise or coastal conditions change.

Researchers examined global mangrove distribution and climate projections to identify areas where protection would provide the greatest long-term benefit.

Their analysis found that protecting sites expected to remain suitable for mangroves in the future could significantly strengthen the overall resilience of mangrove ecosystems.

Strategic conservation could deliver larger benefits

The findings indicate that relatively small changes in conservation planning could produce measurable ecological gains.

Instead of expanding protected areas everywhere, the study suggests prioritising locations where mangroves are more likely to survive climate impacts. These areas may include regions with favourable coastal elevation, sediment supply or lower exposure to human development.

By focusing on these sites, conservation efforts could help maintain continuous networks of mangrove habitats that support biodiversity and ecosystem stability.

According to the research, this targeted approach could improve the resilience of mangrove networks by more than 13%, even with only a modest increase in protected area coverage.

The role of planning in future conservation

The study emphasises that conservation strategies must consider future environmental conditions rather than relying solely on current mangrove distribution.

Climate change is expected to alter coastlines through sea-level rise, changing sediment flows and increased storm activity. These factors can influence where mangroves can survive over the coming decades.

Integrating climate projections into conservation planning could therefore help identify locations where mangrove ecosystems are more likely to persist.

This approach may also support coastal communities that rely on mangroves for protection against storms and flooding.

Implications for global coastal management

Mangrove conservation is increasingly viewed as part of broader coastal management and climate adaptation strategies. Protecting and restoring these ecosystems can support biodiversity while reducing the risks associated with extreme weather events.

The study suggests that targeted conservation planning could improve the effectiveness of mangrove protection without requiring large expansions in protected areas.

As coastal regions face growing environmental pressures, understanding where conservation efforts will have the greatest impact may help guide future policies aimed at protecting coastal ecosystems.