AusPlots Forest Fuel Survey site-level data summary, 2014 - 2015 

Fuel and grass height measurements: The height of fuel (litter or woody fuels) and grass above the mineral soil are measured at eighteen points along the transect (nine 10 cm increments from each 7.0 m and 22.0 m) using a builders ruler [see Manual Fuel load survey]. 

Woody fuel counts : Woody fuels were measured in four size classes [(1) 0-6 mm; (2) 6-25 mm; (3) 25-76 mm; and (4) >76 mm] at varying scales along the 28.3 m transect. Woody fuels were measured as counts of vertical planar intercepts. Size classes (1) and (2) were counted along two 2 m sub-transects between 6-8 m and 20-22 m. Size class (3) is counted in two 4m sub-transects between 5-9 m and 19-23 m. Size class (4) is counted along the entire 28.3 m transect. The diameter at intercept is also recorded for size class (4), as well as the estimated diameter of the hollow centre (if present) [see Manual Fuel load survey]. 

Fine litter, grass, herbs and vines measurement : The projective cover and mass of fine litter, grass, herbs and vines were recorded separately from two 1x1 m quadrats at 7-8 m and 22-21 m along the transect. A representative sample of each component from the site was collected, taken to the lab, weighed, dried to a constant weight at 70°C and re-weighed to estimate moisture content [see Manual Fuel load survey]. 

Duff depth measurement: The depth of duff (where present) was recorded from two soil cores per 1 x 1 m quadrat, totalling 16 across the site[see Manual Fuel load survey]. 

Soil Sampling: Soil samples were collected from 1 x 1 m quadrats, with four 10 cm soil cores being collected from each transect (two from each quadrat). Soil cores were bulked for each transect, kept in a cooler bag during the day, and dried in an oven for 48 hours at 105 degrees celsius on return to the lab [see Manual Soil sampling]. 

Installation of litterfall traps : The litterfall traps used are 0.75 x 0.75 m in dimension and have an input area of 0.56 m2. Four litterfall traps were placed across the site. One corner of the litterfall trap aligned with a steel dropper. The frame for each litterfall trap has constructed from 32mm diameter PVC pipe, including four 57 cm lengths and four 6.8 cm lengths (which form the sides), and four 47 cm lengths (which form the legs). These are joined with four right-angle elbow joins and four T joins. The net for the litterfall trap was manufactured from a 1.8 x 1.8 m piece of shadecloth, which has splits along each side through which the side lengths of PVC pipe were threaded. The frame was assembled and secured with PVC cement solvent on- site. The legs have pre-drilled holes at the base, and have been pinned to the ground using tent pegs [see Manual Litterfall traps]. 

Installation of temperature and humidity data loggers : Three iButton data loggers have been installed at each site. Two are Thermochron DS1922L, which record temperature at four-hourly intervals, and one is a Hygrochron DS1923, which records both temperature and humidity at four-hourly intervals. iButtons have been attached to plastic fobs, which were wired on to the top of a steel dropper and placed inside the yellow safety cap. 

Sampling Design : Gradient Designs; Repeated Measures; Self-selected (Landscape Scale) Sampling 

Flora Sampling: Quadrat/Plot/Grid; Transect Sampling