LOWLAND PACA

Cuniculus paca (Linnaeus, 1766)
IUCN: Least Concern - Decreasing

ECOLOGICAL ROLE

The forest's most important remaining large seed carrier

The paca is Cóbano's most important large rodent and one of the forest's primary handlers of large-seeded tree species - partially replacing, at a reduced scale, the seed dispersal functions once performed by the tapir and spider monkey before their local extinction. By caching seeds and dispersing them away from parent trees into locations where germination is possible, paca contribute directly to forest regeneration and tree species diversity. They also serve as a key prey species for both puma and ocelot, forming an essential link in the food chain that supports Cóbano's remaining large predators.

HABITAT & REQUIREMENTS

Riparian forest, closed canopy, reliable water

Paca are habitat specialists in the precise sense. They require closed canopy overhead, dense riparian vegetation for shelter, and reliable access to water - they will not cross open ground and are rarely found far from forest-covered watercourses. This specificity makes their distribution a fine-grained indicator of riparian habitat connectivity and forest structural integrity. They are sensitive to hunting pressure and respond rapidly to elevated disturbance, declining quickly when pressure increases and recovering with equal speed when it is reduced - making them a responsive and practical measure of the effectiveness of community-level conservation effort.

WHAT WE LOSE

Tree diversity - and a critical link in the predator food chain

Where paca populations fall, the seed dispersal of large-fruited tree species is compromised - shifting forest regeneration toward species with smaller seeds and alternative dispersal vectors, and gradually reducing tree diversity across the landscape. For the predator community, paca scarcity forces puma and ocelot to shift their prey base toward smaller or more accessible animals - increasing predation pressure on domestic poultry and small livestock in communities bordering forest. Paca are also among the most heavily hunted species in the district. Their decline is often the first signal that hunting pressure in an area has exceeded what the population can sustain - an early warning that is worth heeding before the consequences reach the predator tier above them.

BACK TO FOCAL SPECIES

WHAT WE HAVE ALREADY LOST

Four species. Gone within living memory.

Their loss is documented in the historical record of Cabo Blanco and the surrounding peninsula. Each represents not just an absent animal, but a missing ecological function.