Study

The response of native species to removal of invasive exotic grasses in a seasonally dry Hawaiian woodland

  • Published source details D'Antonio C.M., Hughes R.F., Mack M., Hitchcock D. & Vitousek P.M. (1998) The response of native species to removal of invasive exotic grasses in a seasonally dry Hawaiian woodland. Journal of Vegetation Science, 9, 699-712.

Actions

This study is summarised as evidence for the following.

Action Category

Mechanically/manually remove invasive plants

Action Link
Forest Conservation
  1. Mechanically/manually remove invasive plants

    A replicated, controlled study in 1991-1994 in dry tropical forest in Hawaii, USA (D'Antonio et al. 2010) found that removal of invasive grass species increased the relative growth rate and biomass of two of four native shrubs. For hopbrush Dodonaea viscosa and Hawaiian hawthorn Osteomeles anthyllidifolia changes in basal circumference (removal: 13% and 13%; control: 7% and 5%, respectively) and biomass (removal: 33% and 40%; control: 12% and 13%, respectively) were higher in removal than control plots. For maiele Styphelia tameiameia and Metrosideros polymorpha changes in basal circumference (removal: 5% and 9%; control: 4% and 9%, respectively) and biomass (removal: 10% and 3%; control: 6% and 2%, respectively) were similar between treatments. Trees of the four dominant shrub species were monitored in three control (untreated) and four removal (all introduced grasses removed) plots (20 × 20 m) established in spring 1991. Data was collected in 1992 and 1994.

     

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