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Hopping Down the Main Street: Eastern Grey Kangaroos at Home in an Urban Matrix.

Coulson G, Cripps JK, Wilson ME - Animals (Basel) (2014)

Bottom Line: Vehicles were the major (47%) cause of mortality of tagged adults.Road-kills were concentrated (74%) in autumn and winter, and were heavily male biased: half of all tagged males died on roads compared with only 20% of tagged females.We predict that this novel and potent mortality factor will have profound, long-term impacts on the demography and behavior of the urban kangaroo population at Anglesea.

View Article: PubMed Central - PubMed

Affiliation: Department of Zoology, The University of Melbourne, Parkville, VIC 3010, Australia. gcoulson@unimelb.edu.au.

ABSTRACT
Most urban mammals are small. However, one of the largest marsupials, the Eastern Grey Kangaroo Macropus giganteus, occurs in some urban areas. In 2007, we embarked on a longitudinal study of this species in the seaside town of Anglesea in southern Victoria, Australia. We have captured and tagged 360 individuals to date, fitting each adult with a collar displaying its name. We have monitored survival, reproduction and movements by resighting, recapture and radio-tracking, augmented by citizen science reports of collared individuals. Kangaroos occurred throughout the town, but the golf course formed the nucleus of this urban population. The course supported a high density of kangaroos (2-5/ha), and approximately half of them were tagged. Total counts of kangaroos on the golf course were highest in summer, at the peak of the mating season, and lowest in winter, when many males but not females left the course. Almost all tagged adult females were sedentary, using only part of the golf course and adjacent native vegetation and residential blocks. In contrast, during the non-mating season (autumn and winter), many tagged adult males ranged widely across the town in a mix of native vegetation remnants, recreation reserves, vacant blocks, commercial properties and residential gardens. Annual fecundity of tagged females was generally high (≥70%), but survival of tagged juveniles was low (54%). We could not determine the cause of death of most juveniles. Vehicles were the major (47%) cause of mortality of tagged adults. Road-kills were concentrated (74%) in autumn and winter, and were heavily male biased: half of all tagged males died on roads compared with only 20% of tagged females. We predict that this novel and potent mortality factor will have profound, long-term impacts on the demography and behavior of the urban kangaroo population at Anglesea.

No MeSH data available.


Related in: MedlinePlus

Abundance of Eastern Grey Kangaroos Macropus giganteus at Anglesea Golf Club from surveys conducted in winter and summer, inconsistently at first, from 2004 to 2014. Data for 2004 and 2006 compiled from Inwood et al. [35].
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animals-04-00272-f003: Abundance of Eastern Grey Kangaroos Macropus giganteus at Anglesea Golf Club from surveys conducted in winter and summer, inconsistently at first, from 2004 to 2014. Data for 2004 and 2006 compiled from Inwood et al. [35].

Mentions: The abundance of kangaroos on the golf course declined by about 100 animals in the last decade, from a peak of 359 in summer 2004 to 237–263 in the last four summers (Figure 3). Winter counts have shown a similar decline, from 290 in 2006 to 142–210 in the last four winters (Figure 3). An oscillating pattern of winter troughs and summer peaks in abundance has also been evident since twice-yearly surveys began in 2010. In the last seven surveys, 46–66% of the kangaroos seen were tagged (Figure 3).


Hopping Down the Main Street: Eastern Grey Kangaroos at Home in an Urban Matrix.

Coulson G, Cripps JK, Wilson ME - Animals (Basel) (2014)

Abundance of Eastern Grey Kangaroos Macropus giganteus at Anglesea Golf Club from surveys conducted in winter and summer, inconsistently at first, from 2004 to 2014. Data for 2004 and 2006 compiled from Inwood et al. [35].
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4494371&req=5

animals-04-00272-f003: Abundance of Eastern Grey Kangaroos Macropus giganteus at Anglesea Golf Club from surveys conducted in winter and summer, inconsistently at first, from 2004 to 2014. Data for 2004 and 2006 compiled from Inwood et al. [35].
Mentions: The abundance of kangaroos on the golf course declined by about 100 animals in the last decade, from a peak of 359 in summer 2004 to 237–263 in the last four summers (Figure 3). Winter counts have shown a similar decline, from 290 in 2006 to 142–210 in the last four winters (Figure 3). An oscillating pattern of winter troughs and summer peaks in abundance has also been evident since twice-yearly surveys began in 2010. In the last seven surveys, 46–66% of the kangaroos seen were tagged (Figure 3).

Bottom Line: Vehicles were the major (47%) cause of mortality of tagged adults.Road-kills were concentrated (74%) in autumn and winter, and were heavily male biased: half of all tagged males died on roads compared with only 20% of tagged females.We predict that this novel and potent mortality factor will have profound, long-term impacts on the demography and behavior of the urban kangaroo population at Anglesea.

View Article: PubMed Central - PubMed

Affiliation: Department of Zoology, The University of Melbourne, Parkville, VIC 3010, Australia. gcoulson@unimelb.edu.au.

ABSTRACT
Most urban mammals are small. However, one of the largest marsupials, the Eastern Grey Kangaroo Macropus giganteus, occurs in some urban areas. In 2007, we embarked on a longitudinal study of this species in the seaside town of Anglesea in southern Victoria, Australia. We have captured and tagged 360 individuals to date, fitting each adult with a collar displaying its name. We have monitored survival, reproduction and movements by resighting, recapture and radio-tracking, augmented by citizen science reports of collared individuals. Kangaroos occurred throughout the town, but the golf course formed the nucleus of this urban population. The course supported a high density of kangaroos (2-5/ha), and approximately half of them were tagged. Total counts of kangaroos on the golf course were highest in summer, at the peak of the mating season, and lowest in winter, when many males but not females left the course. Almost all tagged adult females were sedentary, using only part of the golf course and adjacent native vegetation and residential blocks. In contrast, during the non-mating season (autumn and winter), many tagged adult males ranged widely across the town in a mix of native vegetation remnants, recreation reserves, vacant blocks, commercial properties and residential gardens. Annual fecundity of tagged females was generally high (≥70%), but survival of tagged juveniles was low (54%). We could not determine the cause of death of most juveniles. Vehicles were the major (47%) cause of mortality of tagged adults. Road-kills were concentrated (74%) in autumn and winter, and were heavily male biased: half of all tagged males died on roads compared with only 20% of tagged females. We predict that this novel and potent mortality factor will have profound, long-term impacts on the demography and behavior of the urban kangaroo population at Anglesea.

No MeSH data available.


Related in: MedlinePlus