On the east coast of Lombok Island, where the smell of salt air mingles with the brackish water of mangrove estuaries, Jamil stands at the water's edge holding a bucket of fish guts and chicken heads, watching for the telltale ripples that signal feeding time. At 63, he has spent his life harvesting mud crabs from these waters—but in recent years, Jamil made a choice that would help reshape both his livelihood and the ecosystem beneath his feet.
Until recently, the story of Indonesian fishing communities like Sugian was one of quiet desperation. East Lombok district tops Indonesia's 500-plus districts for overseas migration, with about 14,000 people—roughly 1% of the district's population—receiving permits to work abroad each year. Mothers become domestic workers in the Middle East; fathers take jobs as ship crew via Taiwan or laborers on Malaysian plantations. The reason is stark: the local minimum wage sits at 2.7 million rupiah, roughly $150 per month—less than half what workers earn in Jakarta. When mud crab populations crashed from overzealous fishing, the few economic anchors holding families together began to slip away.
The solution emerged from understanding the crabs themselves. Unlike most farmed aquatic species, mud crabs thrive specifically in the muddy, sheltered conditions of mangrove ecosystems. The roots provide shelter, stabilize temperatures, and support the microorganisms and nutrients the crabs need. When young crabs mature in these waters alongside newly planted mangroves—a practice called silvofishery—something remarkable happens: not only do the mangroves recover, but the crabs grow larger and fetch higher prices when sold. "If you sell them immediately when they're small, they're cheaper," Jamil explained. By raising crabs to adulthood instead, fishers earn more while stewarding a sustainable population.
The timing is urgent. Indonesia hosts the world's largest mangrove estate—around 3.3 million hectares—yet studies show up to 40% has been degraded or cleared, primarily by crab, fish, and shrimp cultivation since the 1980s. A government pledge to plant 600,000 hectares by 2024 fell far short of its goal. Silvofishery offers a different path: mangroves protected while productivity from a commercially vital fishery increases. Indonesia's aquaculture exports alone were valued at $5.5 billion in 2021.
Yet progress remains fragmented. Local officials acknowledge that most silvofishery initiatives have been forged through trial and error, with a lack of technical training constraining growth. Still, in Sugian's brackish mangroves, the principle is proving itself. "If the habitat is good, the crabs will return—so cultivation is important, but the natural environment must also be restored," said Muslim, head of the fisheries department in West Nusa Tenggara province. As Jamil tends his ponds and new mangrove saplings push through the mud, he represents something larger: a community discovering that food security and ecological restoration are not competing demands, but interwoven necessities.