Predicting the distribution of Emex in Australia

P.C. PheloungA,C, John K. ScottB and R.P. RandallA

A Agriculture Western Australia, 3 Baron-Hay Court, South Perth, Western Australia 6151, Australia.

B CSIRO Division of Entomology, CRC for Weed Management Systems, Private Bag, PO Wembley, Western Australia 6014, Australia.

C Present address: Plant Quarantine Policy Branch, Australian Quarantine Inspection Service, GPO Box 858, Canberra, ACT 2601, Australia.


The potential distribution of Emex australis and E. spinosa in Australia was predicted using information on the present distribution and conditions suitable for plant growth. Two computer based systems, CLIMEX and the Agriculture Western Australia program, Climate, were used to make the predictions. The results indicate that the present distribution of E. australis is close to its potential, but could spread further along the south coast of Western Australia and into Tasmania. Emex spinosa is also widespread, but the potential distribution is considerably more than the existing distribution.


Plant Protection Quarterly (1996) 11 (4) 138-140.