Montipora effusa
Overview
Montipora effusa is a colonial stony coral in the family Acroporidae, typically forming encrusting to laminar (plate-like) growth forms. Like other Montipora species, it builds its skeleton from calcium carbonate and relies on symbiotic zooxanthellae algae for the bulk of its energy needs, supplementing this through capture of plankton with its polyps' tentacles. As a reef-building species, it contributes to the structural complexity of coral reef ecosystems, providing habitat and shelter for numerous invertebrates and fish.
The species occurs in shallow marine neritic waters across parts of the western Pacific and Southeast Asia, with confirmed records in Australia, Malaysia, China, and Japan. It is generally associated with reef environments in coastal and nearshore zones.
Montipora effusa faces a range of ongoing pressures. Fishing and harvesting activities, along with recreational use of reef areas, cause direct physical damage to colonies. Water quality is degraded by domestic and urban wastewater discharge, agricultural runoff from non-timber crop production, and other pollution sources, all of which can stress coral tissue and promote disease.
Disease outbreaks and pressure from problematic native species, as well as invasive species, further compound these stressors. Habitat shifting and alteration, linked to broader environmental change, threaten the stability of the reef substrates the species depends on.
Conservation of this species is largely addressed through broader marine protected area networks and regional reef management programs across its range countries, alongside international monitoring under the IUCN Red List framework, which currently lists it as Endangered. Water quality regulation and fisheries management measures in some jurisdictions provide indirect protection.
The population trend is decreasing, and no specific abundance figures are available. Given the combination of localized human pressures and broader habitat degradation, the species' outlook remains concerning without sustained intervention.
Montipora effusa, a coral species, faces ongoing damage from fishing and harvesting activities, recreational use of its reef habitat, and competition or disease from other invasive and native species. It also suffers from pollution, including sewage and wastewater runoff, agricultural chemicals draining from nearby farms, and broader changes to its habitat caused by shifting ocean conditions. Based on the ongoing nature of all these pressures, the threats to this coral appear to be stable to intensifying, with no signs of easing.
Habitat
Conservation measures underway
Other threatened species in ACROPORIDAE
Threatened in Australia
Frequently asked questions
Why is Montipora effusa classified as Endangered?
Where does Montipora effusa live?
What are the main threats to Montipora effusa?
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