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The Influence of an Invasive Shrub, Buddleja Davidii on a Native Shrub, Griselinia Littoralis Transplanted into a New Zealand Floodplain Chronosequence
Citation:
TALLENT-HALSELL, N. G. AND L. Walker. The Influence of an Invasive Shrub, Buddleja Davidii on a Native Shrub, Griselinia Littoralis Transplanted into a New Zealand Floodplain Chronosequence. Presented at 93rd Ecological Society of America Annual Meeting, Milwaukee, WI, August 03 - 08, 2008.
Impact/Purpose:
Presentation
Description:
Griselinia littoralis, a native New Zealand shrub, was planted into a chronosequence (0 to 8 yrs since flooding) dominated by the non-indigenous shrub, Buddleja davidii in three New Zealand floodplains to determine to what extent facilitation and competitive inhibition may influence the establishment of the native species. Buddleja, an aggressive, highly invasive, ornamental shrub of Asian origin, may be suppressing slower-growing native species on New Zealand Floodplains, thus altering successional trajectories. Griselinia transplants (600) were planted in Buddleja-dominated communities representative of three successional stages (open, young and vigorous) for two growing seasons. Growth responses (i.e., above and below ground biomass, specific leaf area and height) between stages were compared using an analyses of variance.