Characteristics of the Psidium cattleianum invasion of secondary rainforests

David Tng, Miriam Goosem, Claudia Paz, Noel Preece, Stephen Goosem, Roderick Fensham, Susan Laurance

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Strawberry guava (Psidium cattleianum) is a shade-tolerant shrub or small tree invader in tropical and subtropical regions and is considered among the world's top 100 worst invasive species. Studies from affected regions report deleterious effects of strawberry guava invasion on native vegetation. Here we examine the life history demographics and environmental determinants of strawberry guava invasions to inform effective weed management in affected rainforest regions. We surveyed the vegetation of 8 mature rainforest and 33 successional sites at various stages of regeneration in the Australian Wet Tropics and found that strawberry guava invasion was largely restricted to successional forests. Strawberry guava exhibited high stem and seedling densities, represented approximately 8% of all individual stems recorded and 20% of all seedlings recorded. The species also had the highest basal area among all the non-native woody species measured. We compared environmental and community level effects between strawberry guava-invaded and non-invaded sites, and modelled how the species basal area and recruitment patterns respond to these effects. Invaded sites differed from non-invaded sites in several environmental features such as aspect, distance from intact forest blocks, as well as supported higher grass and herb stem densities. Our analysis showed that invasion is currently ongoing in secondary forests, and also that strawberry guava is able to establish and persist under closed canopies. If left unchecked, strawberry guava invasion will have deleterious consequences for native regenerating forest in the Australian Wet Tropics. � 2016 Ecological Society of Australia.
    Original languageEnglish
    Pages (from-to)344-354
    Number of pages11
    JournalAustral Ecology
    Volume41
    Issue number4
    DOIs
    Publication statusPublished - 24 May 2016

    Fingerprint

    rainforest
    rain forests
    stem
    basal area
    seedling
    subtropical region
    vegetation
    secondary forest
    tropical region
    invasive species
    herb
    weed
    tropics
    life history
    shrub
    regeneration
    canopy
    grass
    stems
    effect

    Cite this

    Tng, D., Goosem, M., Paz, C., Preece, N., Goosem, S., Fensham, R., & Laurance, S. (2016). Characteristics of the Psidium cattleianum invasion of secondary rainforests. Austral Ecology, 41(4), 344-354. https://doi.org/10.1111/aec.12319
    Tng, David ; Goosem, Miriam ; Paz, Claudia ; Preece, Noel ; Goosem, Stephen ; Fensham, Roderick ; Laurance, Susan. / Characteristics of the Psidium cattleianum invasion of secondary rainforests. In: Austral Ecology. 2016 ; Vol. 41, No. 4. pp. 344-354.
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    abstract = "Strawberry guava (Psidium cattleianum) is a shade-tolerant shrub or small tree invader in tropical and subtropical regions and is considered among the world's top 100 worst invasive species. Studies from affected regions report deleterious effects of strawberry guava invasion on native vegetation. Here we examine the life history demographics and environmental determinants of strawberry guava invasions to inform effective weed management in affected rainforest regions. We surveyed the vegetation of 8 mature rainforest and 33 successional sites at various stages of regeneration in the Australian Wet Tropics and found that strawberry guava invasion was largely restricted to successional forests. Strawberry guava exhibited high stem and seedling densities, represented approximately 8{\%} of all individual stems recorded and 20{\%} of all seedlings recorded. The species also had the highest basal area among all the non-native woody species measured. We compared environmental and community level effects between strawberry guava-invaded and non-invaded sites, and modelled how the species basal area and recruitment patterns respond to these effects. Invaded sites differed from non-invaded sites in several environmental features such as aspect, distance from intact forest blocks, as well as supported higher grass and herb stem densities. Our analysis showed that invasion is currently ongoing in secondary forests, and also that strawberry guava is able to establish and persist under closed canopies. If left unchecked, strawberry guava invasion will have deleterious consequences for native regenerating forest in the Australian Wet Tropics. � 2016 Ecological Society of Australia.",
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    Tng, D, Goosem, M, Paz, C, Preece, N, Goosem, S, Fensham, R & Laurance, S 2016, 'Characteristics of the Psidium cattleianum invasion of secondary rainforests', Austral Ecology, vol. 41, no. 4, pp. 344-354. https://doi.org/10.1111/aec.12319

    Characteristics of the Psidium cattleianum invasion of secondary rainforests. / Tng, David; Goosem, Miriam; Paz, Claudia; Preece, Noel; Goosem, Stephen; Fensham, Roderick; Laurance, Susan.

    In: Austral Ecology, Vol. 41, No. 4, 24.05.2016, p. 344-354.

    Research output: Contribution to journalArticleResearchpeer-review

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    Tng D, Goosem M, Paz C, Preece N, Goosem S, Fensham R et al. Characteristics of the Psidium cattleianum invasion of secondary rainforests. Austral Ecology. 2016 May 24;41(4):344-354. https://doi.org/10.1111/aec.12319