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- W1448308503 abstract "In the last 10 years there has been a proliferation of weed risk assessment (WRA) systems developed in response to a need to make informed judgments on where to spend finite resources on weed control or eradication. Each WRA system varies in the type of input information required, and although there are common elements across all systems, there has not been a study to compare the outputs from each system. The early results presented here are part of a larger study that compares assessments of a common set of species with five different WRA systems, to determine if the assessment of weed risk to natural ecosystems in Australia is consistent between States. The results will also inform policy makers on the most suitable system for Western Australia (WA). Four of the systems are post-border models, and the fifth is a pre-border model used by Biosecurity Australia to predict weed potential (results not shown). The WA system included in this study is not being applied at the state level, but is being used by some regional and local groups to rank weed species. Species selected for assessment include those with a range of growth habits, life form (annual or perennial) and estimated weediness. Ten species were ranked from one to 10 based on the scores for two criteria of a WRA, invasiveness and impacts, and correlation coefficients (Rs) determined. The early assessment results of 10 species show correlations between systems vary for the two criteria. The outcome of invasiveness assessments shows weak non-significant positive correlations between all systems, with the exception of SA and NT, which are significantly positively correlated (Rs = 0.839) (Table 1). This is to be expected, as the NT system is a derivative of the SA system. However, for the assessment of impacts, correlations between all systems are strongly positive and significant, with only the SA and WA systems showing a coefficient of less than 0.8. It is interesting that for the invasiveness criterion there was a lack of consistency across systems. Which WRA works for Western Australia? A comparison of weed risk assessment systems available in Australia using species of varying growth habit, life form and weediness" @default.
- W1448308503 created "2016-06-24" @default.
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- W1448308503 date "2008-01-01" @default.
- W1448308503 modified "2023-09-28" @default.
- W1448308503 title "Which WRA works for Western Australia? A comparison of weed risk assessment systems available in Australia using species of varying growth habit, life form and weediness." @default.
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