Effects of soil disturbance and weed removal on germination within woodlands infested by boneseed (Chrysanthemoides monilifera ssp. monilifera)
P.B. ThomasA, H. PossinghamB and R. RoushB
A Centre for Integrated Catchment Management, University of Western Sydney, Hawkesbury, Richmond, New South Wales 2753, Australia.
B Department of Applied and Molecular Ecology, University of Adelaide, Waite Campus, Glen Osmond, South Australia 5064, Australia.
The effects of controlling the environmental weed boneseed(Chrysanthemoides monilifera (L.) Norl. ssp. monilifera (DC.) Norl.) on subsequent regeneration within two open woodlands in the Mount Lofty Ranges were investigated. The techniques used to control boneseed involved combinations of three levels of soil disturbance; minimum, low and high, and two levels of mulching; removing the cut/uprooted plants or stacking them in the centre of the quadrat. The germination of all plant species were unaffected by an interaction between these factors, or by mulching. The emergence of two native geophytes, Arthropodium sp. and Lagenifera stipitata (Labill.) Druce decreased with increasing levels of soil disturbance. Fewer Stipa setacea R.Br., Freesia sp., Homeria flaccida Sweet, Caesia vittata R.Br. and orchid plants emerged within areas infested by boneseed.
Plant Protection Quarterly (2000) 15 (1) 6-13.