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Biodiversity and invasive grass species: multiple-use or monoculture?

Ferdinands, Keith, Beggs, Kerry and Whitehead, Peter J. (2005). Biodiversity and invasive grass species: multiple-use or monoculture?. Wildlife Research,32(5):447-457.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 17 times in Scopus Article | Citations

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IRMA ID A00009xPUB10
Title Biodiversity and invasive grass species: multiple-use or monoculture?
Author Ferdinands, Keith
Beggs, Kerry
Whitehead, Peter J.
Journal Name Wildlife Research
Publication Date 2005
Volume Number 32
Issue Number 5
ISSN 1035-3712   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-25144433885
Start Page 447
End Page 457
Total Pages 11
Publisher CSRIO Publishing
Field of Research 0608 - Zoology
HERDC Category C1 - Journal Article (DEST)
Abstract Invasive plants are recognised as a major threat to biodiversity conservation worldwide. Despite this recognition, our understanding of the mechanisms controlling the invasion process and its impact on flora and fauna is often poor. We examined the impact of an invasive aquatic grass species, para grass (Urochloa mutica), on seasonally inundated wetlands in tropical northern Australia. Flora and avifauna were surveyed at sites invaded by para grass and in native vegetation. Spatial information systems were used to design surveys and determine environmental correlates of para grass distribution and so predict the potential future spread of para grass and infer impacts in the absence of control. Where para grass was present the median number of plant taxa was similar to 75% lower. Few birds showed preference for habitats invaded by para grass, and most birds were associated with areas of native vegetation or other habitats with little or no para grass. The study identified several wetland habitats that are at greater risk of invasion, based on the apparent habitat preferences of para grass. The degradation or loss of some of these 'at-risk' habitats, including Oryza meriodionalis grasslands that play an integral role in the wetland food chain, has important ramifications for the levels of biodiversity supported by the wetlands.
Keywords plant-communities
australia
DOI http://dx.doi.org/10.1071/WR04036   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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