Feral pigs in Namadgi National Park, Australia: dynamics, impacts and management

Feral pigs (Sus scrofa) have spread through Namadgi National Park (NNP) in south-eastern Australia since the early 1960s at a mean rate of 4 km/year. Pigs were abundant (approximately 1-2 pigs km-2) during the mid-1980s. Research from 1985 to 2000 inclusive has demonstrated a positive curved relationship across years between the frequency of occurrence of pig rooting and pig abundance (R2=0.48; P<0.001) and the extent of ground rooting; more pigs, more rooting. The ground rooting decreased plant species richness. There was a negative curved relationship between plant species richness and the extent of pig rooting at two sites (R2=0.81; P<0.0001 and R2=0.67; P<0.0001), with plant richness declining to zero with intensive pig rooting. Since the mid 1980s intensive pig control work has resulted in a significant (R2=0.39; P<0.001) decline in pig abundance with an annual instantaneous rate of change (r) of -0.15 between 1985 and 2000 inclusive. The results and their implications for biodiversity conservation and feral pig management are discussed.

Author Hone, J.
Date null
Year 2002
Secondary title Biological Conservation
Volume 105
Number 2
Institution University of Canberra
Pages 231-242
Notes Notes
Region Australia - national
Links https://www.ingentaconnect.com/content/els/00063207/2002/00000105/00000002/art00185