Macquarie Island soil property data - January to March, 2013

Soil cores were collected from numerous locations across the Macquarie Island Isthmus to test the residual toxicity of petroleum hydrocarbons in sub-Antarctic soils.. Replicate samples were collected from each location and a single sample was collected from 50cm depth below the surface. Soil samples were collected in plastic sample jars.Column labelsSample - Unique numerical sample identifierLocation - Location identifier codeEasting - easting (m)Northing - northing (m)Depth - Depth of collection (cm) below surface% Organic - Organic matter determined by loss on ignition at 550 degrees centigrade% 2mm - Proportion of sample by mass with particle size greater than 2mm determined by dry sieving% 63 um - Proportion of sample by mass with particle size greater than 63 micron, less than 2mm determined by dry sieving% less than 63 um - Proportion of sample by mass with particle size less than 63 micron determined by dry sieving% Water - Proportion of water in field collected sample, determined by loss of mass after drying at 80deg C until constant weightCond uS/cm - Electrical conductivity of soil determined using field conductivity probe after addition of milli-Q water and shaking for 2 hpH - pH of soil determined using field pH probe after addition of milli-Q water and shaking for 2 h