Presence/ Absence data for Azorella dieback at locations on Macquarie Island (2008/09 - 2012/13)

These locations are presented in figure 2 of Bergstrom et al (in press). The dataset shows 523 sites at which a vegetation survey was conducted by one of the authors.

Locations were marked with either a differential GPS (+/- 0.5 m) or a handheld GPS (+/- 5m), and plot sizes ranged between point locations (AT and JS), 5 x 5 m (those acquired by DB, PB) and 30 x 30 m (those acquired by (JW and Tasmanian Parks and wildlife staff ). In each plot, the researcher recorded whether Azorella was present, and if present, whether dieback was also present. Many of these sites were repeatedly visited over the study period, and the Azorella status is reported for the final year of survey in that plot.