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

This spreadsheet shows the location and health status of Azorella macquariensis plants in study plots across Macquarie Island between the summers of 2008/09 and 2011/1 2. 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. The table below provides details of the fields in the spreadsheet.

Field Name - Description
AzMaClass - Status of Azorella macquariensis in that study plot. Possible values are: Healthy Azorella, Dieback present, or No Azorella

Researcher - Name of the researcher who collected the data

SiteID - Unique identification code for each study plot

Easting - Easting in UTM Zone 57S

Northing - Northing in UTM ZOne 57S