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Extent of dense native woodland and exotic weed infestation in the extensive grazing lands of the Upper Herbert and Upper Burdekin River Catchments of far north Queensland: results of a producer survey

Shaw, K.A. and Kernot, J.C. (2004) Extent of dense native woodland and exotic weed infestation in the extensive grazing lands of the Upper Herbert and Upper Burdekin River Catchments of far north Queensland: results of a producer survey. Tropical Grasslands, 38 . pp. 112-116.

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Publisher URL: http://www.tropicalgrasslands.asn.au

Abstract

The Mt Garnet Landcare Group commissioned a survey of landholders within the Upper Herbert and Upper Burdekin River Catchments to assess the density of native woodlands and to gauge the extent of exotic weed infestation. Twenty-four of 49 landholders responded, representing an area of nearly 500 000 ha or 47% of the total area. Dense native woodland covers 24% (>117 000 ha) of the area surveyed, while a further 30% (140 000 ha) supports moderately dense stands. The dense stands are largely confined to the highly fertile alluvial soils (26% dense woodland) and the lower fertility sandy-surfaced soils (33% or >96 000 ha). Moderate and dense infestations of exotic weeds, principally Lantana camara, occur on 54% (20 000 ha) of alluvial soils and on 13% of sandy-surfaced soils (39 000 ha), where praxelis (Praxelis clematidia) is the major weed. Basaltic soils have low levels of both dense woodland and exotic weed infestation. Some implications of the results are discussed.

Item Type:Article
Additional Information:© The Tropical Grassland Society of Australia Inc. Journal subscribers may be able to access the published version of this article. Use hypertext link above to access publisher’s web site.
Keywords:Weeds; native woodland.
Subjects:Science > Invasive Species > Plants
Forestry > History of forestry. Forest conditions
Plant pests and diseases > Weeds, parasitic plants etc
Agriculture > Agriculture (General) > Agricultural education > Research. Experimentation
Deposited On:08 Jul 2004
Last Modified:05 Apr 2011 04:32

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