IMIS | Flanders Marine Institute

Flanders Marine Institute

Platform for marine research


Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Natural recolonisation of seagrasses at a disused sewage sludge outfall
Bryars, S.; Neverauskas, V. (2004). Natural recolonisation of seagrasses at a disused sewage sludge outfall. Aquat. Bot. 80(4): 283-289.
In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770, more
Peer reviewed article  

Available in  Authors 

    Sea grass; Posidonia König, 1805 [WoRMS]; ISW, Australia, South Australia, Adelaide [Marine Regions]; Marine

Authors  Top 
  • Bryars, S.
  • Neverauskas, V.

    Digested sludge from a sewage outfall that operated for 15 years adjacent to Adelaide in South Australia caused total seagrass loss in a 365 ha area around the outfall. Eight years after its closure, an underwater survey was conducted to determine the extent of seagrass recovery in a 2 ha area immediately adjacent to the disused outfall. Total seagrass cover was estimated to be 28% comprising 23% Halophila australis, 3% Posidonia angustifolia, 1% Posidonia sinuosa, and less than 1% each for Zostera tasmanica and Amphibolis antarctica. The recovery of seagrasses at the outfall site is probably due to recolonisation by propagules from a distant source. While results from this study suggest that seagrasses can return to a severely polluted site if the pollution source is removed and that Posidonia can be a primary coloniser of disturbed sites, they also suggest that it will take many decades for the seagrass community to recover to its former state.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors