Relevant bibliographies by topics / Eastern grey kangaroo – Ecology – Sydney

Academic literature on the topic 'Eastern grey kangaroo – Ecology – Sydney'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Eastern grey kangaroo – Ecology – Sydney"

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Power, Michelle L., Nicholas C. Sangster, Martin B. Slade, and Duncan A. Veal. "Patterns of Cryptosporidium Oocyst Shedding by Eastern Grey Kangaroos Inhabiting an Australian Watershed." Applied and Environmental Microbiology 71, no. 10 (October 2005): 6159–64. http://dx.doi.org/10.1128/aem.71.10.6159-6164.2005.

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ABSTRACT The occurrence of Cryptosporidium oocysts in feces from a population of wild eastern grey kangaroos inhabiting a protected watershed in Sydney, Australia, was investigated. Over a 2-year period, Cryptosporidium oocysts were detected in 239 of the 3,557 (6.7%) eastern grey kangaroo fecal samples tested by using a combined immunomagnetic separation and flow cytometric technique. The prevalence of Cryptosporidium in this host population was estimated to range from 0.32% to 28.5%, with peaks occurring during the autumn months. Oocyst shedding intensity ranged from below 20 oocysts/g feces to 2.0 × 106 oocysts/g feces, and shedding did not appear to be associated with diarrhea. Although morphologically similar to the human-infective Cryptosporidium hominis and the Cryptosporidium parvum “bovine” genotype oocysts, the oocysts isolated from kangaroo feces were identified as the Cryptosporidium “marsupial” genotype I or “marsupial” genotype II. Kangaroos are the predominant large mammal inhabiting Australian watersheds and are potentially a significant source of Cryptosporidium contamination of drinking water reservoirs. However, this host population was predominantly shedding the marsupial-derived genotypes, which to date have been identified only in marsupial host species.
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Balland, Jeff, Catherine A. Herbert, Justin A. Welbergen, and John M. Martin. "Habitat selection in a peri-urban area by a large mammal indicates a low potential for human–wildlife conflict." Wildlife Research 47, no. 5 (2020): 381. http://dx.doi.org/10.1071/wr19234.

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Abstract ContextIn Australia, various species of macropods (family Macropodidae) are known to occur within peri-urban areas, where they can be a source of human–wildlife conflict. Some species, such as the eastern grey kangaroo (Macropus giganteus), have received considerable research attention over the past few years following demands from land managers for evidence-based management guidelines; however, the ecology of other macropod species found in peri-urban areas, such as the eastern wallaroo (Osphranter robustus robustus), remains poorly understood. AimsThe aims were to determine the home range of male and female eastern wallaroos and assess habitat selection in order to define whether wallaroos in a peri-urban environment should be viewed as thriving (‘matrix-occupying’), persisting (‘matrix-sensitive’) or struggling (‘urban-sensitive’). MethodsHome range and habitat use of six adult male, five adult female and one subadult male eastern wallaroo were investigated using GPS telemetry between October 2017 and May 2018 in the south-west of Sydney. Key resultsHome ranges (mean±s.e.) of males (63.1±10.2ha) were significantly larger than those of females (31.1±3.3ha). Every adult wallaroo had highly overlapping monthly home ranges, indicating strong site fidelity in all individuals. Eastern wallaroos selected habitats based on vegetation composition during the night and canopy cover during the day. Grassland and open native woodlands were preferred during foraging activities at night. By contrast, human-modified habitats, including hard surfaces and lawns, were avoided at all times by all individuals. ConclusionThe results indicate that eastern wallaroos avoid human-modified features in the landscape, so they could be viewed as persisting (‘matrix-sensitive’) in peri-urban areas. ImplicationsCompared with matrix-occupying macropods, such as the eastern grey kangaroo, the eastern wallaroo is less likely to cause human–wildlife conflicts – a result of its avoidance of human-modified habitat. Land-use planning, involving green corridors linking remnant vegetation, should be implemented as part of urban planning to enable the persistence of diverse mammal populations in urban areas, particularly matrix-sensitive species.
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MAHONY, MICHAEL J., TRENT PENMAN, TERRY BERTOZZI, FRANK LEMCKERT, ROHAN BILNEY, and STEPHEN C. DONNELLAN. "Taxonomic revision of south-eastern Australian giant burrowing frogs (Anura: Limnodynastidae: Heleioporus Gray)." Zootaxa 5016, no. 4 (August 9, 2021): 451–89. http://dx.doi.org/10.11646/zootaxa.5016.4.1.

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The rarely encountered giant burrowing frog, Heleioporus australiacus, is distributed widely in a variety of sclerophyll forest habitats east of the Great Dividing Range in south-eastern Australia. Analyses of variation in nucleotide sequences of the mitochondrial ND4 gene and thousands of nuclear gene SNPs revealed the presence of two deeply divergent lineages. Multivariate morphological comparisons show the two lineages differ in body proportions with > 91% of individuals being correctly classified in DFA. The two lineages differ in the number and size of spots on the lateral surfaces and the degree by which the cloaca is surrounded by colour patches. The mating calls are significantly different in number of pulses in the note. The presence of a F2 hybrid in the area where the distribution of the two taxa come into closest proximity leads us to assign subspecies status to the lineages, as we have not been able to assess the extent of potential genetic introgression. In our sampling, the F2 hybrid sample sits within an otherwise unsampled gap of ~90km between the distributions of the two lineages. The nominate northern sub-species is restricted to the Sydney Basin bioregion, while the newly recognised southern subspecies occurs from south of the Kangaroo Valley in the mid-southern coast of New South Wales to near Walhalla in central Gippsland in Victoria. The habitat of the two subspecies is remarkably similar. Adults spend large portions of their lives on the forest floor where they forage and burrow in a variety of vegetation communities. The southern subspecies occurs most commonly in dry sclerophyll forests with an open understory in the south and in open forest and heath communities with a dense understory in the north of its distribution. The northern subspecies is also found in dry open forests and heaths in association with eroded sandstone landscapes in the Sydney Basin bioregion. Males of both taxa call from both constructed burrows and open positions on small streams, differing from the five Western Australian species of Heleioporus where males call only from constructed burrows. Using the IUCN Red List process, we found that the extent of occupancy and area of occupancy along with evidence of decline for both subspecies are consistent with the criteria for Endangered (A2(c)B2(a)(b)).
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Brunton, Elizabeth A., Sanjeev K. Srivastava, and Scott Burnett. "Spatial ecology of an urban eastern grey kangaroo (Macropus giganteus) population: local decline driven by kangaroo–vehicle collisions." Wildlife Research 45, no. 8 (2018): 685. http://dx.doi.org/10.1071/wr18077.

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Context As urban landscapes proliferate globally, the need for research into urban wildlife interactions is magnified. The eastern grey kangaroo (Macropus giganteus) is a widespread species commonly involved in wildlife–vehicle collisions in urban areas in Australia. Despite the many urban kangaroo populations and associated conflicts with human activities, few studies have examined how eastern grey kangaroos interact with, and are affected by, the urban matrix. Aims The present study aimed to quantify kangaroo demography, movements, habitat utilisation and exposure to risks during a period of intensive urban development in a rapidly changing suburb located in a region undergoing high urban growth rates. Methods We utilised foot-based census surveys, global positioning system (GPS) collars, direct observations and reports of wildlife mortality between 2014 and 2016. Geographical information systems (GIS) were used to integrate GPS-tracking data with spatial layers, to quantify kangaroo movements and habitat utilisation. Key results The kangaroo population underwent a steep decline and kangaroo–vehicle collisions were the main source of mortality (73%) during the study period. Kangaroos were regularly exposed to the risk of injury, with roads intersecting many parts of their home range. Kangaroos showed positive habitat selection both for lawn and forest habitats and kangaroo movement and presence at the study site were influenced by high-quality forage and cover. Conclusions The present research has highlighted that despite areas of suitable habitat remaining, road-kill was a major contributor to localised kangaroo-population decline. We showed that habitat preferences of eastern grey kangaroos in this urban area were consistent with those in natural landscapes. Implications The present study is the first to implicate kangaroo–vehicle collisions as the major factor in population decline in kangaroos. These findings can be utilised to guide design and placement of kangaroo–vehicle collision mitigation and assist in planning of urban areas, particularly where kangaroo populations are in decline. Local extirpation of urban kangaroo populations would be greatly reduced by incorporating site-specific kangaroo habitat preferences and existing patterns of kangaroo habitat use in infrastructure planning. The study has contributed to our understanding of the effects of roads on urban wildlife in general and highlighted the importance of landscape permeability.
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Speare, Richard, and David Banks. "A Trichoepithelioma in a Wild Eastern Grey Kangaroo (Macropus giganteus)." Journal of Wildlife Diseases 23, no. 3 (July 1987): 508–9. http://dx.doi.org/10.7589/0090-3558-23.3.508.

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Hopwood, PR, and RM Butterfield. "The Locomotor Apparatus of the Crus and Pes of the Eastern Gray Kangaroo, Macropus-Giganteus." Australian Journal of Zoology 38, no. 4 (1990): 397. http://dx.doi.org/10.1071/zo9900397.

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The bones and muscles of the crus and pes of the grey kangaroo are described and illustrated. The hopping of grey kangaroos is also described. The morphology of the musculo-skeletal elements of the crus and pes, together with muscle weight distribution in the pelvic limb, are discussed in relation to hopping. Several errors in the literature on the kangaroo locomotor apparatus are identified.
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Barker, R. D., and G. Caughley. "Distribution and abundance of kangaroos (Marsupialia: Macropodidae) at the time of European contact: Victoria." Australian Mammalogy 15, no. 1 (1992): 81. http://dx.doi.org/10.1071/am92011.

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The dominant species of large macropods in Victoria are the Eastern Grey Kangaroo (Macropus giganteus) and the Southern (= Western) Grey Kangaroo (M. fuliginosus). On the limited historic data available there is no indication that their ranges have changed since European settlement. The Red Kangaroo (M. rufus) was restricted to the northwest corner of the state, then as now. Moderate densities of Grey Kangaroos at settlement increased under forest clearing, probably peaking about the mid-nineteenth century. With intensification of farming and associated heavy hunting they declined again to establish by about the turn of the century the distribution of modera te density that we see today.
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Wright, SM. "Observations of the behaviour of male eastern grey kangaroos when attacked by dingoes." Wildlife Research 20, no. 6 (1993): 845. http://dx.doi.org/10.1071/wr9930845.

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Interactions between dingoes and male eastern grey kangaroos observed at Wallaby Creek (in northeastern New South Wales) are described. Other than simple flight, large male kangaroos can react to dingoes by defending themselves or fleeing to water. A male kangaroo defended himself during an encounter lasting over 60min. His actions included high-standing, kicking, thumping the tail, and hopping towards and watching the dingo. The encounter was made up of six intense bouts, during which the dingo was within 5m of the kangaroo. Most bouts involved the dingo circling and the kangaroo turning to face the dingo, with the kangaroo's degree of reaction depending on the distance to the dingo. The response of the kangaroo diminished during later bouts. A second kangaroo fled to water when pursued by a dingo and after swimming to shallow water lowered his body so only his head showed. The dingo remained on the bank watching for some time. Both encounters ended with the dingo leaving.
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Cairns, S. C., G. W. Lollback, and N. Payne. "Design of aerial surveys for population estimation and the management of macropods in the Northern Tablelands of New South Wales, Australia." Wildlife Research 35, no. 4 (2008): 331. http://dx.doi.org/10.1071/wr07079.

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As part of a kangaroo management program, eastern grey kangaroos (Macropus giganteus) and common wallaroos (M. robustus robustus) are harvested from three kangaroo management zones in north-eastern New South Wales, Australia. To set sustainable harvest quotas, it is necessary to obtain reasonably accurate estimates of the sizes of the populations of these two species of macropod. Recently, this has been done on two occasions using helicopter line-transect surveys. For the most recent of these surveys, conducted in 2004, each management zone was subdivided into three strata of increasing kangaroo density and the surveys were designed in relation to this stratification using an automated survey design algorithm. The results of the surveys were that eastern grey kangaroo densities were estimated as 8.11 ± 1.81 km–2 in the Glen Innes zone, 10.23 ± 2.41 km–2 in the Armidale zone and 4.82 ± 0.87 km–2 in the Upper Hunter zone. Wallaroo densities for these three zones were 3.06 ± 0.73 km–2, 5.68 ± 3.45 km–2 and 4.40 ± 1.01 km–2 respectively. The wallaroo densities were determined by multiplying the initial estimated densities by a correction factor of 1.85. Across the three kangaroo management zones, eastern grey kangaroo densities did not change in any significant way between the two surveys. This was also the case for wallaroos in the Glen Innes and Armidale zones. Wallaroo density in the Upper Hunter zone, however, increased significantly between the two surveys. Over a decade before these surveys were conducted, a series of ground surveys using walked line-transect sampling were undertaken. The density estimates derived from the helicopter surveys proved to be broadly comparable to those derived from the ground surveys, suggesting that conducting helicopter line-transect surveys designed using the method deployed here is effective in producing population estimates for the purpose of kangaroo management.
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Jaremovic, Renata V., and David B. Croft. "Comparison of Techniques to Determine Eastern Grey Kangaroo Home Range." Journal of Wildlife Management 51, no. 4 (October 1987): 921. http://dx.doi.org/10.2307/3801761.

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Dissertations / Theses on the topic "Eastern grey kangaroo – Ecology – Sydney"

1

Billing, Justin Heybourne. "Analysis of the nutritional ecology of eastern grey kangaroos (Macropus giganteus) using faecal near infrared reflectance spectroscopy." Phd thesis, 2009. http://hdl.handle.net/1885/150128.

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