Effects of grazing, trenching and surface soil disturbance on ground cover in woody encroachment on the Cobar Pediplain, south-eastern Australia

2013 ◽  
Vol 96 ◽  
pp. 80-86 ◽  
Author(s):  
Rhiannon Smith ◽  
Matthew Tighe ◽  
Nick Reid ◽  
Sue Briggs ◽  
Brian Wilson
Keyword(s):  
Surface Soil ◽  
Ground Cover ◽  
Soil Disturbance ◽  
Woody Encroachment ◽  
South Eastern ◽  
Eastern Australia ◽  
South Eastern Australia

Factors related to gully erosion in woody encroachment in south-eastern Australia

CATENA ◽  
2010 ◽  
Vol 83 (2-3) ◽  
pp. 148-157 ◽  
Author(s):  
Carlos Muñoz-Robles ◽  
Nick Reid ◽  
Paul Frazier ◽  
Matthew Tighe ◽  
Sue V. Briggs ◽  
...  
Keyword(s):  
Gully Erosion ◽  
Woody Encroachment ◽  
South Eastern ◽  
Eastern Australia ◽  
South Eastern Australia

Effects of fire retardant on heathland soils in south-eastern Australia

Soil Research ◽  
2007 ◽  
Vol 45 (8) ◽  
pp. 607 ◽  
Author(s):  
P. Hopmans ◽  
N. Collett ◽  
R. Bickford
Keyword(s):  
Surface Soil ◽  
Fire Retardant ◽  
Total Carbon ◽  
Rapid Decline ◽  
Surface Soils ◽  
South Eastern ◽  
Eastern Australia ◽  
Pre Treatment ◽  
The Impact ◽  
South Eastern Australia

A study was undertaken to assess the effects of fire retardant application, unmodified by heat of fire, on soil properties in 2 fire-prone heathland communities at Marlo and the Grampians in south-eastern Australia. Fire retardant (Phos-Chek D75-R at 0.144 g/L) was applied at rates of 0.5, 1.0, and 1.5 L/m2 and compared with control treatments of nil and 1.0 L/m2 of water. Monitoring of surface soils showed that pH at both sites decreased while soil salinity increased immediately after application followed by a rapid decline to pre-treatment values within 12 months. The impact of retardant on total carbon and nitrogen was minor and within the range of natural variation of C and N in surface soils at both sites. Levels of readily available or labile forms of N increased at both sites but declined rapidly to background values after 12 months. Applications of retardant progressively increased extractable P in the surface soil at Marlo, in contrast to the Grampians where a rapid increase was observed after two months followed by a decline after 12 months. These results showed a significant increase in labile P in the surface soil after 12 months and also indicated that a large proportion of the phosphate applied had leached into the subsoil. Likewise, fire retardant applied at the highest rate caused increases in labile sulfate after 2 months at both sites, followed by a rapid decline to background levels. It is expected that the elevated levels of soil phosphate in particular could have a long-term impacts on growth and composition of heathland vegetation known to be sensitive to elevated levels of phosphate in soil.

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