Articles citing this paper

^A Department of Geography, University of Wales Swansea, Singleton Park, Swansea SA2 8PP, United Kingdom.

^B School of Geography, University of Plymouth, Drake Circus, Plymouth PL4 8AA, United Kingdom. Telephone: +44 (0)1752 233069; fax: +44 (0)1752 233054; email: william.blake@plymouth.ac.uk

^C Telephone: +44 (0)1792 2955236; fax: +44 (0)1792 295955; email: R.A.Shakesby@swan.ac.uk

^D School of Ecology and Environment, Deakin University, Warrnambool Campus, PO Box 423, Vic. 3280, Australia. Telephone +61 3 5663 3535; fax: + 61 3 556 33143; email: frankst@deakin.edu.au

^E Wageningen University, Department of Environmental Science, Nieuwe Kanaal 11, 6709 PA Wageningen, The Netherlands. Telephone: +31 (0) 317 489 111; fax: +31 (0)317 48 39 99;

^F Department of Physical Geography, Macquarie University, North Ryde, Sydney, NSW 2109, Australia. Telephone: +61 2 9850 7990; fax: +61 2 9850 8420; email: ghumphre@laurel.ocs.mq.edu.au

^G CSIRO Land & Water, GPO Box 1666, Canberra, ACT 2601, Australia. Telephone: +61 2 6246 5823; fax: +61 2 6246 5800; email: Peter.Wallbrink@csiro.au

^H Corresponding author. Telephone: +44 1792 295147; fax: +44 1792 295955; email: S.Doerr@swansea.ac.uk