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E-Mail IMAGE: Dr Tim Doherty, School of Life and Environmental Sciences, the University of Sydney. Photographed here with a sand goanna in Mallee Cliffs, NSW, Australia. view more Credit: The University of Sydney For the first time, scientists have calculated the global impact of human activity on animal movement, revealing widespread impacts that threaten species survival and biodiversity. While it has been shown that activities such as logging and urbanisation can have big impacts on wildlife, the study by scientists at the University of Sydney and Deakin University in Australia shows that episodic events such as hunting, military activity and recreation can trigger even bigger changes in animal behaviour. ....
Human activity over the past 40 years has changed the behaviour of animals, increasing their movement by up to 70 per cent, a new study has warned. Researchers from the University of Sydney analysed 208 separate studies on 167 animal species published since the early 1980s to track animal movement. Human activity such as logging and urbanisation, as well as episodic events like hunting and military activity, disrupts animal movement as they flee humans or travel further to find mates and food, the study found. Animals looked at ranged from the sleepy orange butterfly to the heavily culled European badger, the black bear and the 2,000 kilogram great white shark. ....
The elk that can be found in Bear Valley Springs, Stallion Springs and in a slowly increasing wide area are a source of enjoyment and amazement for Tehachapi residents as well as visitors. Mostly the sightings are of bull elk, but the cows are, of course, key to the health and continuation of the herd. The elk are a subspecies known as either Rocky Mountain Elk or American Elk (Cervus canadensis nelsoni). At the time that Europeans arrived on the North American continent, elk were very widespread. These enormous deer were important to scores of Native tribes, and there were an estimated 10 million elk living in North America. ....