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

摘要: 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 km−2) during mid-1980s. Research from 1985 to 2000 inclusive has demonstrated positive curved relationship across years between frequency occurrence pig rooting and abundance (R2=0.48; P<0.001) extent ground rooting; more pigs, rooting. The decreased plant species richness. There was negative richness two sites (R2=0.81; P<0.0001 R2=0.67; P<0.0001), with declining zero intensive Since mid 1980s control work resulted significant (R2=0.39; decline an annual instantaneous change (r) −0.15 inclusive. results their implications for biodiversity conservation feral management are discussed.