<P> In 2009 as part of the Q150 celebrations, the dingo fence was announced as one of the Q150 Icons of Queensland for its role as an iconic "innovation and invention". </P> <P> It seems that there are fewer kangaroos and emus on the northwestern side of the fence where the dingoes are, suggesting that the dingoes' presence reduces the populations of those animals . It has also been suggested that the larger kangaroo populations inside the fence have been caused by the lack of dingo predation, and competition for food leads to lower sheep stocking rates than would be possible without the fence . </P> <P> Believed to have been introduced into Australia by Aboriginals between 4,600 and 18,300 years ago, the dingo's status as a native or introduced species in Australia has been a controversy . According to Dr. Mike Letnic, at the Centre for Ecosystem Science, UNSW, the dingo, as Australia's top predator, has an important role in maintaining the balance of nature and that reintroduced or existing dingo populations could increase biodiversity across more than 2 million square kilometres of Australia (Avolia 2009). Where dingoes had been exterminated, Dr. Letnic found increased abundances of introduced red foxes and herbivores, while small native mammals and grasses were lost . In 2011 the Liberal MP for Stuart, Dan van Holst Pellekaan, called for a $200 bounty on dingos . </P> <P> Although the fence has helped reduce the loss of sheep to predators, the exclusion of dingoes has allowed for increased pasture competition from rabbits, kangaroos and emus . Sheep are being lost to increasing numbers of feral dogs . </P>

The impacts of the 3200 mile dingo fence in australia include all of the following except