Aboriginal serrated and perforated shell artefacts from the Murray River, South Australia

2021 ◽  
Author(s):  
AMY ROBERTS ◽  
CRAIG WESTELL ◽  
CHRISTOPHER WILSON ◽  
MICHELLE C. LANGLEY ◽  
RIVER MURRAY AND MALLEE ABORIGINAL CORPORATION ◽  
...  
Keyword(s):  
South Australia ◽  
Murray River ◽  
Perforated Shell

Gordon Roy Cameron, 1899-1966

1968 ◽  
Vol 14 ◽  
pp. 83-116
Keyword(s):  
Small Town ◽  
South Australia ◽  
Growing Up ◽  
Hill Country ◽  
The Bible ◽  
Murray River ◽  
The Family ◽  
The Government ◽  
Opening Up

Gordon Roy Cameron was born in Australia on 30 June 1899 at Echuca, a small town on the Victoria side of one of the bends on the Murray River. His father, George Cameron, was then a Methodist minister at a small village called Wamboota. George Cameron’s parents (Grandfather Cameron and his wife, earlier a Miss Miller) who came of hard-working farming stock in Dyce, Aberdeenshire, with forbears in Inverness and Fort Augustus, had left Aberdeen for Australia the day after their marriage early in the 1870’s and taken up land in Minlaton in St Vincent’s peninsula, South Australia. They had eleven children, of whom George Cameron was the eldest; he seems to have had a hard life on the farm. When he was twelve years old the Government of Victoria began opening up the Mallee area in northern Victoria, and he and his father each drove a wagon containing members of the family and their few goods over the 500 miles trek—much of it over uncleared scrub, desert and hill country—from Minlaton to the Mallee area, where they took up about a hundred acres of scrub to make a farm, later extended to some two thousand acres. There they and their neighbours built the mud house that still survived in 1920. Some fourteen years later the farm was going well, the younger children were growing up, and George Cameron, who had recently taken part in Bible Christian services and had developed a reputation as a local preacher, decided to join the Bible Christians as a candidate for the Ministry. In due course he was appointed to a circuit as a probationer in Horsham, North Victoria, where he met Emily Pascoe, whom he later married.

Ecological and physiological impacts of salinisation on freshwater turtles of the lower Murray River

2012 ◽  
Vol 39 (8) ◽  
pp. 705 ◽  
Author(s):  
Deborah S. Bower ◽  
Clare E. Death ◽  
Arthur Georges
Keyword(s):  
Saline Lake ◽  
South Australia ◽  
Freshwater Turtle ◽  
Plasma Sodium ◽  
Freshwater Species ◽  
Freshwater Turtles ◽  
Brackish Lake ◽  
Ecological Processes ◽  
Murray River ◽  
Chelodina Longicollis

Context The increasing intensity and extent of anthropogenically mediated salinisation in freshwater systems has the potential to affect freshwater species through physiological and ecological processes. Determining responses to salinisation is critical to predicting impacts on fauna. Aims We aimed to quantify the response of wild-caught turtles from freshwater lakes that had become saline in the lower Murray River catchment. Methods Plasma electrolytes of all three species of freshwater turtle from South Australia were compared among two freshwater sites (Horseshoe Lagoon and Swan Reach), a brackish lake (Lake Bonney) and a saline lake (Lake Alexandrina). Key results Chelodina longicollis, C. expansa and Emydura macquarii from a brackish lake had higher concentrations of plasma sodium and chloride than those from freshwater habitats. However, osmolytes known to increase under severe osmotic stress (urea and uric acid) were not elevated in brackish sites. Turtles from the highly saline lake were colonised by an invasive marine worm which encased the carapace and inhibited limb movement. Conclusions Freshwater turtles in brackish backwaters had little response to salinity, whereas the C. longicollis in a saline lake had a significant physiological response caused by salt and further impacts from colonisation of marine worms. Implications Short periods of high salinity are unlikely to adversely affect freshwater turtles. However, secondary ecological processes, such as immobilisation from a marine worm may cause unexpected impacts on freshwater fauna.

scholarly journals 3D Mapping of the Submerged Crowie Barge Using Electrical Resistivity Tomography

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Kleanthis Simyrdanis ◽  
Ian Moffat ◽  
Nikos Papadopoulos ◽  
Jarrad Kowlessar ◽  
Marian Bailey
Keyword(s):  
Electrical Resistivity ◽  
Electrical Resistivity Tomography ◽  
South Australia ◽  
Field Studies ◽  
Resistivity Tomography ◽  
High Resolution Mapping ◽  
Murray River ◽  
Resolution Mapping ◽  
Mapping Techniques

This study explores the applicability and effectiveness of electrical resistivity tomography (ERT) as a tool for the high-resolution mapping of submerged and buried shipwrecks in 3D. This approach was trialled through modelling and field studies of Crowie, a paddle steamer barge which sunk at anchor in the Murray River at Morgan, South Australia, in the late 1950s. The mainly metallic structure of the ship is easily recognisable in the ERT data and was mapped in 3D both subaqueously and beneath the sediment-water interface. The innovative and successful use of ERT in this case study demonstrates that 3D ERT can be used for the detailed mapping of submerged cultural material. It will be particularly useful where other geophysical and diver based mapping techniques may be inappropriate due to shallow water depths, poor visibility, or other constraints.

New radiocarbon ages for the Lower Murray River, South Australia

2012 ◽  
Vol 47 (3) ◽  
pp. 157-160 ◽  
Author(s):  
CHRISTOPHER WILSON ◽  
STEWART FALLON ◽  
TOM TREVORROW
Keyword(s):  
South Australia ◽  
Murray River

A World That Was: The Yaralde of the Murray River and the Lakes, South Australia.

1995 ◽  
Vol 68 (1) ◽  
pp. 147
Author(s):  
David Turner ◽  
Ronald M. Berndt ◽  
Catherine H. Berndt ◽  
John E. Stanton
Keyword(s):  
South Australia ◽  
Murray River

scholarly journals At the End of the River: The Coorong and Lower Lakes

2010 ◽  
Vol 16 (4) ◽  
pp. 290
Author(s):  
Roger L Groome
Keyword(s):  
South Australia ◽  
Environmental Values ◽  
Associate Professor ◽  
Murray River ◽  
The University

This is a marvelous text (29 cm X 23 cm, 247 pp) on the Coorong and other waters at the mouth of the Murray River in South Australia, their social and environmental values, and the problems which beset them. The Coorong itself is an unusual 110 kilometers long but narrow lagoon, running southeast along the coast from the Murray mouth. Authored principally by Associate Professor David Paton of the University of Adelaide, the text also contains vignettes by 22 other contributors. Its ten chapter are illustrated by 150 colour photographs (no less than 35 photographers contributed) and 35 are so delightful sketches. Almost 300 references are included, plus 50 tables and diagrams.

scholarly journals Modelling effects of water regulation on the population viability of threatened amphibians

2021 ◽  
Author(s):  
Rupert Mathwin ◽  
Skye Wassens ◽  
Matthew Gibbs ◽  
Jeanne Young ◽  
Qifeng Ye ◽  
...  
Keyword(s):  
Extinction Risk ◽  
South Australia ◽  
Environmental Water ◽  
River Regulation ◽  
Local Extinction ◽  
River Channels ◽  
Floodplain Wetlands ◽  
Inundation Frequency ◽  
River Floodplains ◽  
Murray River

The regulation of river systems alters hydrodynamics and often reduces lateral connectivity between river channels and floodplains. For taxa such as frogs that rely on floodplain wetlands to complete their lifecycle, decreasing inundation frequency can reduce recruitment and increase the probability of local extinction. We virtually reconstructed the inundation patterns of wetlands under natural and regulated flow conditions and built stochastic population models to quantify the probability of local extinction under different inundation scenarios. Specifically, we explored the interplay of inundation frequency, habitat size, and successive dry years on the local extinction probability of the threatened southern bell frog Litoria raniformis in the Murray River floodplains of South Australia. We hypothesised that the changes in wetland inundation resulting from river regulation are driving the decline of L. raniformis in this system. Since river regulation began in the 1920s, the inundation frequency of many reliable breeding habitats has decreased to a point where they no longer support local populations. Increasing successive dry years drives the probability of local extinction, particularly in smaller wetlands. Larger wetlands and those with more frequent average inundation are less susceptible to these effects. Synthesis and Applications. Although the availability of suitable habitats has reduced, environmental water provision is a promising tool to mitigate the negative impacts of river regulation on amphibian populations. Our modelling approach can be used to prioritise the delivery of environmental water (through pumping or the operation of flow-regulating structures) to minimise the probability of local extinction in L. raniformis and potentially many other frog species. By quantifying the extinction risk of amphibian populations, we can strategically manage environmental water to reduce successive catastrophic breeding failures and increase the probability of persistence.

THE SOUTH AUSTRALIAN CONTINENTAL SHELF AS A HABITAT FOR PETROLEUM

1964 ◽  
Vol 4 (1) ◽  
pp. 53
Author(s):  
Reg. C. Sprigg
Keyword(s):  
Continental Shelf ◽  
Lower Cretaceous ◽  
Structural Break ◽  
Continental Drift ◽  
South Australia ◽  
The South ◽  
The North ◽  
Preferred Habitat ◽  
Murray River ◽  
Petroleum Generation

The Continental Shelf off South Australia is predicted to be a preferred habitat of petroleum. Non-metamorphosed sediments which are known or presumed to extend onto this shelf include Permian, Cretaceous and Cainozoic sediments. A single presumed Permian trough lying seaward of, and sub-parallel to, the Coorong is interpreted (aeromagnetic data) to extend to possibly 4,000 feet. As part of the Permian fossil valley system of central-eastern South Australia is is predicted to be filled by shales and sands with limited marine facies, and by glacigene sediments. The north-south orientation of the trough would require a landmass to the south from which the Permian glaciers originated. Some form of continental drift may be required to satisfy this requirement.An east-west graben or geosyncline (Gambier-Otway Basin) choked with Cretaceous mudstones and sub-greywackes projects across the shelf in the extreme south-east. Landward dips at depth extending well out beneath the shelf, may suggest a southerly boundary to the basin consistent with a pre-existing landmass in this direction.Extensive erosion at the close of Lower Cretaceous times accords with major geological change at least in more southerly shelf areas. Marine sedimentary onlap and overlap become conspicuous elements, and the accumulation of oceanward thickening sedimentary deposits is more in keeping with outbuilding terrace development. A major structural break accordingly is indicated at the end of the Lower Cretaceous, at which time development of the modern continental shelf began.The Murray River had its principal outlets in the extreme south-east zone during mid-Cretaceous to early Tertiary times, but shifted to its present position during late Cainozoic at which time its sediments were swept across the developing shelf south of Kangaroo Island. Thick sedimentary developments in each of these areas provide promising environment for petroleum generation. These are areas of extensive coastal bitumen activity.Principal petroleum prospects are to be expected within the Middle Cretaceous to Tertiary developments, but older Cretaceous and Permian deposits are potentially prospective.

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