scholarly journals Assessing the spatial and temporal organization of Red Kangaroo, Western Grey Kangaroo and Eastern Grey Kangaroo populations in eastern Australia using multivariate autoregressive state‐space models

2021 ◽  
Vol 22 (S1) ◽  
pp. 106-123 ◽  
Author(s):  
Steven R. McLeod ◽  
Neal Finch ◽  
Glenn Wallace ◽  
Anthony R. Pople
Keyword(s):  
State Space ◽  
Temporal Organization ◽  
State Space Models ◽  
Red Kangaroo ◽  
Grey Kangaroo ◽  
Eastern Australia ◽  
Western Grey Kangaroo ◽  
Multivariate Autoregressive

The Effect of Temporary Closure of Watering Points on Grazing Intensity of Red and Grey Kangaroos With Related Observations on Feral Goats.

1997 ◽  
Vol 19 (2) ◽  
pp. 157 ◽  
Author(s):  
D Freudenberger ◽  
RB Hacker
Keyword(s):  
Grazing Intensity ◽  
Grazing Pressure ◽  
Red Kangaroo ◽  
Goat Grazing ◽  
Grey Kangaroo ◽  
Eastern Australia ◽  
Arid Rangelands ◽  
A Minor ◽  
Temporary Closure ◽  
Feral Goat

In this study we examined the utility of manipulating artificial waters as a means of managing total grazing pressure in semi-arid rangelands of eastern Australia. We tested the efficacy of 'Finlayson trough' exclosure technology at three locations, over two summers, in paddocks with red kangaroos (Macropus rufirs) and two species of grey kangaroo (M. giganteus and M. fuliginosus). We also examined the effect of closing off five waters on the distribution of feral goat grazing intensity at one study site. Generally, there were no apparent reductions in kangaroo and goat grazing intensity following 6-10 weeks of water exclosure, the exception being a minor reduction in red kangaroo grazing intensity at one location. We concluded that kangaroo and goat grazing pressure cannot be substantially reduced by simply closing off waters in and near paddocks for several months. Key words: kangaroos, water exclosure. feral goats, grazing pressure, paddock spelling

Distribution and abundance of kangaroos (Marsupialia: Macropodidae) at the time of European contact: Victoria.

1992 ◽  
Vol 15 (1) ◽  
pp. 81
Author(s):  
R.D. Barker ◽  
G. Caughley
Keyword(s):  
Nineteenth Century ◽  
Dominant Species ◽  
Turn Of The Century ◽  
Forest Clearing ◽  
European Contact ◽  
European Settlement ◽  
Red Kangaroo ◽  
Grey Kangaroo ◽  
Western Grey Kangaroo ◽  
Historic Data

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.

Forelimb musculature of kangaroos with particular emphasis on the tammar wallaby Macropus eugenii (Desmarest, 1817)

2010 ◽  
Vol 32 (1) ◽  
pp. 1 ◽  
Author(s):  
Kathryn J. Harvey ◽  
Natalie Warburton
Keyword(s):  
Evolutionary History ◽  
Spatial Arrangement ◽  
Tammar Wallaby ◽  
Macropus Eugenii ◽  
Red Kangaroo ◽  
Morphological Studies ◽  
Shoulder Muscles ◽  
Grey Kangaroo ◽  
Western Grey Kangaroo ◽  
Future Work

Comparative morphological studies can provide insights into an animal’s ecology and evolutionary history. Functional morphological studies of the kangaroo forelimb are few in number and new work could provide novel tools to aid in the interpretation of fossil taxa and the understanding of the evolutionary history of kangaroos and marsupials as a whole. A description of the shoulder and forelimb musculature of the tammar wallaby (Macropus eugenii) with comparisons to the red kangaroo (Macropus rufus Desmarest, 1842), the western grey kangaroo (Macropus fuliginosus Desmarest, 1817) and the quokka (Setonix brachyurus Quoy & Gaimard, 1830) is presented. The species chosen were readily available and represent a range in size of the archetypal kangaroo form. Muscle maps of forelimb and shoulder muscles were constructed as an aid to comparing the spatial arrangement of muscle origins and insertions. The anatomical pattern of forelimb musculature in terrestrial macropodine kangaroos and wallabies is highly conservative. Functionally, the musculature of the forelimb corresponds to a supporting role of the limb during slow pentapedal locomotion. The illustrations of muscle insertions provided in this work will be a useful reference for future work in comparative marsupial anatomy and palaeobiology.

scholarly journals MARSS: Multivariate Autoregressive State-space Models for Analyzing Time-series Data

The R Journal ◽  
2012 ◽  
Vol 4 (1) ◽  
pp. 11 ◽  
Author(s):  
Elizabeth,E. Holmes ◽  
Eric,J. Ward ◽  
Kellie Wills
Keyword(s):  
Time Series ◽  
State Space ◽  
Time Series Data ◽  
State Space Models ◽  
Series Data ◽  
Multivariate Autoregressive

The Distribution and Abundance of Kangaroos in relation to Environment in Western Australia

1983 ◽  
Vol 10 (3) ◽  
pp. 435 ◽  
Author(s):  
J Short ◽  
G Caughley ◽  
D Grice ◽  
B Brown
Keyword(s):  
Land Use ◽  
Western Australia ◽  
Arable Land ◽  
The State ◽  
Winter Rainfall ◽  
The North ◽  
Red Kangaroo ◽  
Grey Kangaroo ◽  
Western Grey Kangaroo ◽  
Almost All

Red and western grey kangaroos were surveyed from the air in Western Australia during the winter of 1981. The area covered, 1 528 000 km2 or 61% of the State, excluded only the Kimberleys in the north and the Gibson and Great Sandy Deserts of the interior. Hence almost all kangaroo range within the State was surveyed, to provide an estimate of 980 000 reds and 436 000 greys. Densities were much lower than those of the eastern States. Red kangaroos were most abundant in mulga shrubland, chenopod shrubland and tussock grassland, and least abundant in hummock grassland. Densities were associated strongly with land-use categories, being high in areas used for extensive sheep grazing and low in vacant Crown Land and arable land. In contrast to reds the western grey kangaroos were confined to the south and west of the state, their distribution being related more directly to climate than to vegetation or land use. They live in the winter rainfall zone. We suggest that their restricted breeding season results in peak nutritional demands associated with lactation, and hence energy requirements, being synchronized with the spring flush of pasture following winter rains. Approximately 14% of the red kangaroo and 8% of the western grey kangaroo populations in Western Australia were harvested legally in 1981.

Parameter Estimation Using a Modified Version of SPSA Algorithm Applied to State Space Models

2009 ◽  
Vol 129 (12) ◽  
pp. 1187-1194 ◽  
Author(s):  
Jorge Ivan Medina Martinez ◽  
Kazushi Nakano ◽  
Kohji Higuchi
Keyword(s):  
Parameter Estimation ◽  
State Space ◽  
State Space Models

Heat transfer modeling and identification using fractional order state space models

2008 ◽  
Vol 42 (6-8) ◽  
pp. 939-951 ◽  
Author(s):  
Tounsia Jamah ◽  
Rachid Mansouri ◽  
Saïd Djennoune ◽  
Maâmar Bettayeb
Keyword(s):  
Heat Transfer ◽  
State Space ◽  
Fractional Order ◽  
State Space Models ◽  
Heat Transfer Modeling ◽  
Order State
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