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Posidonia australis, also known as fibre-ball weed or ribbon weed, is a species of seagrass that occurs in the southern waters of Australia. It forms large meadows important to environmental conservation. Balls of decomposing detritus from the foliage are found along nearby shore-lines.
The ecological community is "the assemblage of plants, animals and micro-organisms associated with seagrass meadows dominated by Posidonia australis occurring in the warm temperate Manning Shelf and Hawkesbury Shelf bioregions on the east coast of Australia."
Posidonia is a genus of flowering plants. It contains nine species of marine plants [ 3 ] (" seagrass "), found in the seas of the Mediterranean and around the south coast of Australia . The APG system (1998) and APG II system (2003) accept this genus as constituting the sole genus in the family Posidoniaceae , which it places in the order ...
Fucus serratus, "toothed wrack" Pelvetia canaliculata, "channelled wrack" Accumulation of detrital seagrass wrack (Posidonia australis) at West Beach, South Australia Wrack washed ashore in Brunswick, Georgia by Hurricane Matthew. Wrack is part of the common names of several species of seaweed in the family Fucaceae.
A species of Posidonia. A perennial rhizomatous herb that appears as stands in marine habitat. This species is found at depths from 1 to 30 metres on white sands, in areas subject to intense wave action. The leaf blades are 2.5 to 7 millimetres wide, and 1.25 metres long.
The western coast contain notable and diverse seagrass beds; Cockburn Sound and the Swan River estuary, and the Houtman Abrolhos, Rottnest and other islands. The Wooramel Seagrass Bank 12 species - estimated 4,500 km 2 of seabed - at Shark Bay is the largest reported seagrass meadows in the world (Walker, 1989).
Posidonia oceanica, commonly known as Neptune grass or Mediterranean tapeweed, is a seagrass species that is endemic to the Mediterranean Sea. [2] It forms large underwater meadows that are an important part of the ecosystem. The fruit is free floating and known in Italy as "the olive of the sea" (l'oliva di mare [3]).
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