A coastal mangrove state forest on Puerto Rico's southern shore, protecting mangroves, salt ponds, and rich birdlife.
Aguirre State Forest
Aguirre State Forest (Bosque Estatal de Aguirre) is a publicly administered nature reserve on the southern coast of Puerto Rico, one of twenty state forests across the commonwealth. Stretching across the municipalities of Guayama and Santa Isabel, it centers on extensive mangrove coastlines, low-lying keys, and floodplain forests, with a character strongly shaped by the adjacent Jobos Bay estuary.
The forest is ecologically significant because its mangrove systems and tropical salt ponds create a transitional habitat where marine, brackish, and freshwater environments overlap. It forms part of the Jobos Bay Important Bird Area and has been recognized by BirdLife International as an important marine and terrestrial bird site, while also supporting reptiles, amphibians, bats, and West Indian manatees in its lagoon systems.
Beyond its ecological profile, Aguirre State Forest is also tied to Puerto Rico's agricultural heritage. It takes its name from the nearby Central Aguirre, a historic sugarcane plantation complex, and the forest reflects the broader landscape history of Puerto Rico's south coast, where industrial activity and natural coastal ecosystems remain closely intertwined.