Download Applied Population and Community Ecology: The Case of Feral by Jim Hone PDF

By Jim Hone

Content material:
Chapter 1 creation (pages 1–8):
Chapter 2 utilized inhabitants and group Ecology (pages 09–19):
Chapter three surroundings (pages 20–28):
Chapter four inhabitants Ecology of Feral Pigs (pages 29–53):
Chapter five flooring Disturbance and Feral Pigs (pages 54–70):
Chapter 6 Feral Pig inhabitants administration (pages 71–96):
Chapter 7 group Ecology (pages 97–120):
Chapter eight the longer term: administration strategies (pages 121–140):
Chapter nine Conclusions (pages 141–146):

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Extra info for Applied Population and Community Ecology: The Case of Feral Pigs in Australia

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2006). 3 kg (Twigg et al. 2007), compared with mean bodyweights of adult males of 72 kg and adult females of 62 kg (Hampton et al. 2004a). In Texas, adult males weighed 76 kg on average and adult females 62 kg, though these were not significantly different (Ilse & Hellgren 1995). The age structure of feral pig populations has been reported in some studies. At Long Plain and Yarrangobilly in northern Kosciuszko National Park, the age structure of a feral pig population was estimated in 1985–8 (Saunders 1988, 1993).

The group size data from Kosciuszko and Namadgi National Parks can be put into a wider context. 4 The frequency distribution of group size of feral pigs in Namadgi National Park. Observations occurred during 1984 and 1986, prior to intensive pig control. Population Ecology of Feral Pigs 37 (Twigg et al. 2005). 1 pigs in a study in southern Queensland (Spencer et al. 2005). The latter study used genetic analysis and suggested that many groups were matriarchal assemblages of related individuals but that the groups were dynamic in composition, with individuals entering and leaving.

Biases in such estimation have been shown to occur in feral pigs from semi-arid environments but not from the Australian high country in Kosciuszko National Park (Choquenot & Saunders 1993). The latter study showed that pigs from Kosciuszko laid cementum rings in their lower first incisor teeth and the authors suggested this might occur annually. Ages estimated from cementum rings were positively correlated with age determined from body measurements, like those used by Boreham (1981), and from tooth-wear measures, like those used by Giles (1980).

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