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Title: Prolonged summer flooding switched dominance from the invasive weed Lippia ('Phyla canescens') to native species in one small, ephemeral wetland.
Contributor(s): Price, Jodi Nicole  (author); Gross, Caroline L  (author)orcid ; Whalley, Ralph D  (author)orcid 
Publication Date: 2010
DOI: 10.1111/j.1442-8903.2010.00514.x
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Abstract: Lippia ('Phyla canescens', Verbenaceae) is an invasive perennial forb from South America that is now widespread throughout the Murray Darling Basin in Australia, threatening the biological values of internationally significant wetlands (Ramsar sites) and the productivity of the grazing industry (Earl 2003). In the Gwydir Wetlands in north western NSW, the spread of Lippia has been associated with large and widespread flooding that occurred in the late 1990s (McCosker 1998). Lippia dominance is believed to be favoured by the altered flood regimes associated with river regulation, namely a reduction in the frequency and duration of flooding. Studies have found Lippia to occur in infrequently flooded sites (Blanch et al. 1999; Mawhinney 2003) and at higher elevations in the floodplain (Blanch et al. 2000). Glasshouse studies have found that Lippia growth is stunted at inundation depths of 20 cm, although no mortality was reported (McCosker 1994; Hobson 1999). This has lead to a widespread belief that restoration of a more 'natural' flood regime may assist in Lippia control. However, few data are available to support this notion.
Publication Type: Journal Article
Source of Publication: Ecological Management & Restoration, 11(1), p. 61-63
Publisher: John Wiley & Sons, Inc
Place of Publication: Australia
ISSN: 1442-8903
Fields of Research (FoR) 2008: 050209 Natural Resource Management
050103 Invasive Species Ecology
050102 Ecosystem Function
Socio-Economic Objective (SEO) 2008: 960805 Flora, Fauna and Biodiversity at Regional or Larger Scales
961202 Rehabilitation of Degraded Farmland, Arable Cropland and Permanent Cropland Environments
960501 Ecosystem Assessment and Management at Regional or Larger Scales
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article

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