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|Title:||Changes in vegetation patterns on the margins of a constructed wetland after 10 years|
|Citation:||Ecological Management & Restoration Online, 2004; 5(2):111-117|
|Publisher:||Blackwell Publishing Asia|
|Leigh M. Garde, Jason M. Nicol, John G. Conran|
|Abstract:||A constructed urban wetland in Adelaide was surveyed 18 months and 10 years after construction to see how shoreline vegetation, soil electrical conductivity (EC), texture and pH changed over time and to provide data for future site management. Multivariate analysis detected four plant associations at 18 months: salt-tolerant taxa on conductive clays; a weed-dominated community on lower EC soil; and two smaller waterlogged, low EC clusters dominated by Common Reed (Phragmites australis) and Sea Club-Rush (Bolboschoenus caldwellii), respectively. At 10 years, site cover and heterogeneity was higher, with the margins dominated by Phragmites and salt-tolerant species. EC was much lower and more uniform, and the soils were heavier and more alkaline. Managed storm water flushing apparently lowered soil EC, but possibly also disturbed the shoreline. However, weeds were still common, and the potential for domination by Phragmites at the expense of other native shoreline species means that ongoing monitoring and hydrological and vegetation management are essential to maintain site habitat diversity.|
|Description:||The definitive version is available at www.blackwell-synergy.com|
|Appears in Collections:||Earth and Environmental Sciences publications|
Environment Institute publications
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