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Impact of Austropuccinia psidii (myrtle rust) on Myrtaceae-rich wet sclerophyll forests in south east Queensland

Pegg, G., Taylor, T., Entwistle, P., Guymer, G., Giblin, F. and Carnegie, A. (2017) Impact of Austropuccinia psidii (myrtle rust) on Myrtaceae-rich wet sclerophyll forests in south east Queensland. PLoS ONE, 12 (11). ISSN 19326203 (ISSN)

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Article Link(s): https://doi.org/10.1371/journal.pone.0188058

Abstract

In April 2010, Austropuccinia psidii (formerly Puccinia psidii) was detected for the first time in Australia on the central coast of New South Wales. The fungus spread rapidly along the east coast and can now be found infecting vegetation in a range of native forest ecosystems with disease impacts ranging from minor leaf spots to severe shoot and stem blight and tree dieback. Localised extinction of some plant species has been recorded. In 2014, the impact of A. psidii was observed for the first time in a wet sclerophyll site with a rainforest understory, dominated by species of Myrtaceae, in Tallebudgera Valley, south east Queensland, Australia. This study aimed to determine the impact of A. psidii on individual species and species composition. Here we provide quantitative and qualitative evidence on the significant impact A. psidii has in native ecosystems, on a broader range of species than previously reported. Archirhodomyrtus beckleri, Decaspermum humile, Gossia hillii and Rhodamnia maideniana are in serious decline, with significant increases in tree mortality over the period of our study. This research further highlights the potential of this invasive pathogen to negatively impact native ecosystems and biodiversity. © 2017 Pegg et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Item Type:Article
Business groups:Horticulture and Forestry Science
Additional Information:Open access
Keywords:Article Austropuccinia psidii community structure controlled study ecosystem forest Myrtaceae myrtle nonhuman plant community plant disease Puccinia qualitative analysis quantitative analysis Queensland rain forest species composition species difference tree
Subjects:Science > Invasive Species > Plants > Impact assessment
Plant pests and diseases
Forestry > Research. Experimentation
Deposited On:17 Jan 2018 01:03
Last Modified:17 Jan 2018 01:05

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