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Size-biomass relationships for Australian populations of the invasive rangeland shrub Parkinsonia Aculeata L

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Grice, A. C., Campbell, S. D., McKenzie, J.R., Whiteman, L.V. and Lukitsch, B.V. (2002) Size-biomass relationships for Australian populations of the invasive rangeland shrub Parkinsonia Aculeata L. The Rangeland Journal, 24 (2). pp. 207-218. ISSN 1036-9872

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Article Link: https://doi.org/10.1071/RJ02011

Abstract

Parkinsonia aculeata is an invasive, introduced shrub that is found in all mainland states of Australia except Victoria. It is especially prevalent north of the tropic of Capricorn. Size-biomass relationships were established for this species using data from 167 shrubs spread across eight sites in the Northern Territory and north-eastern Queensland. Above-ground dry weight (W, kg) can be predicted from plant height (H, m), canopy diameter (D, m) or stem cross-sectional area (A, cm2) using the equations: W = 0.025 H4.47 W = 0.091 D3.64 W = 0.022 A1.61 These relationships are linear when plotted on log-log scales. Although there was a significant effect of "site" on the log-log relationships between above-ground dry weight and size variables, the amount of information lost by not using site-specific equations is relatively small. These results provide reliable methods for estimating above-ground biomass in this species, the most robust being based on measurements of stem diameter at 20 cm above ground level.

Item Type:Article
Subjects:Plant pests and diseases > Weeds, parasitic plants etc
Live Archive:17 Jan 2024 23:36
Last Modified:17 Jan 2024 23:36

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