However, theseall rely on destructive sampling and ultimately a non-intrusive andnon-destructive method of estimating water availability is requiredto avoid ongoing sampling and damage to these fragile and finiteAntarctic communities. The outliers in Fig. 7 showing 0% mosshealth can be explained by the fact that these quadrats have a smallupstream area (hence their low value on the x-axis), however, theyare not directly fed by the snow pack