Acropora dendrum

Acropora dendrum is a stony coral of the family Acroporidae, forming branching colonies typical of the genus. Like other Acropora species, it relies on symbiotic zooxanthellae for energy through photosynthesis, and reproduces via mass spawning events synchronized with lunar and seasonal cues. As a reef-building species, it contributes to the physical structure of reef habitats, providing shelter and substrate for numerous other marine organisms, from fish to invertebrates.

The species occurs in marine neritic waters across parts of the western Pacific, with recorded presence in Australia, Vanuatu, China, Japan, and Palau. It is generally restricted to shallow, light-penetrated reef environments where calcification and photosynthetic activity can be sustained.

The species faces a broad range of ongoing pressures. Fishing and harvesting activities, along with recreational use of reef areas, cause direct physical damage. Water quality is degraded by domestic and urban wastewater, agricultural runoff, and effluents from non-timber crop production.

Invasive species and disease outbreaks, compounded by problematic native species interactions, add further biological stress. Habitat alteration, storms, flooding, and fire-related land-use impacts also affect coastal and adjacent terrestrial systems that influence reef health. These combined stressors have driven a declining population trend.

Conservation efforts for Acropora corals generally include marine protected area designations, water quality regulation, coral restoration and propagation programs, and monitoring of reef health across the species' range countries. Enforcement of fishing restrictions and reduction of land-based pollution sources are also part of broader regional reef management strategies.

Acropora dendrum is currently classified as Endangered, with a decreasing population trend. Given the cumulative and ongoing nature of the threats it faces, its long-term outlook remains uncertain without sustained reductions in pollution, harvesting pressure, and climate-related disturbances.