Avicennia integra

Avicennia integra is a mangrove tree restricted to Australia, notable for the pencil-like pneumatophores it sends upward through tidal mud to allow gas exchange in oxygen-poor soils. Like other mangroves, it tolerates saline conditions through salt-excreting leaf glands and produces water-dispersed propagules adapted to tidal transport. As a foundation species of the intertidal zone, it stabilizes coastal sediments, buffers shorelines from erosion and storm surge, and provides habitat and nursery grounds for fish, crustaceans, and birds.

The species occurs along Australia's coastline within marine intertidal and coastal/supratidal habitats, typically in estuarine and sheltered coastal zones where mangrove communities establish on soft substrates.

Its population is in decline, driven by a combination of ongoing pressures. Coastal urban development and associated infrastructure, including roads, are encroaching on mangrove stands, while aquaculture expansion converts intertidal habitat directly. Discharge from domestic wastewater and agricultural and forestry effluents degrades water quality in estuarine systems, and unspecified pollution sources add further stress.

Conversion of adjacent land for non-timber crops contributes to habitat alteration, and localized logging and wood harvesting remove individual trees. Storms and flooding, potentially intensifying with climatic change, add physical damage to already fragmented stands.

Conservation attention for this species is linked to broader Australian mangrove and coastal wetland protections, including habitat regulations restricting clearing and reclamation in intertidal zones, along with water quality management programs targeting estuarine pollution. Species-specific recovery programs are limited.

Given the breadth and persistence of threats affecting its restricted range, Avicennia integra is assessed as Vulnerable, with a continuing decreasing population trend and no clear indication of reversal.