WetlandInfo—your first-stop-shop for wetland management resources in Queensland

Wonderful wetlands

Wetlands are important for our environment, economy and our livelihoods. They have many functions from reducing floods to producing clean water and food for humans, industry and agriculture. They provide important habitat for many animals and plants. Wetlands are the great ‘connectors’ across our landscape providing places for our enjoyment and relaxation. Regardless of whether you are doing a school or uni assignment, managing a wetland or undertaking research, you will find a wealth of information here on WetlandInfo. Read more…

WetlandInfo feature species

The feature plant for August is the grey mangrove, Avicennia marina. Avicennia marina is a species of mangrove tree classified in the plant family Acanthaceae (formerly in the Verbenaceae or Avicenniaceae). It occurs in the intertidal zones of estuarine areas. The Grey mangrove is a highly variable tree, with three subspecies. It has been reported to tolerate extreme weather conditions, high winds, and various pests and diseases. It has smooth light-grey bark made up of thin, stiff, brittle flakes. It also has aerial roots (pneumatophores) that grow to a height of about 20 cm, and a diameter of 1 cm. These allow the plant to absorb oxygen, which is deficient in its habitat. These roots also anchor the plant during the frequent inundation of seawater in the soft substrate of tidal systems.

Nitrogen is processed by mangroves, providing a vital ecosystem service. Mangrove forests are highly productive, and are a major long-term sink for nitrogen.

Additional information

• Species profile
• Atlas of Living Australia.