Migration patterns of five fish species in the Murray-Darling River system

Results of a fish tagging study carried out in the Murray River, South Australia from 1974 to 1978, are presented. Of 14 333 fish tagged, 1276 were recaptured and the records of these recaptures yield evidence on the movements of several species of both commercial and recreational interest. Some golden perch (Macquaria ambigua) migrated extensively upstream, many moving more than 1000 km. The migration followed, and appeared to be triggered by, a rise in water level at the onset of major flooding. The upstream migrations, made only by mature fish, appear to be a reproduction strategy to ensure that the eggs, which are buoyant, are distributed downstream. In contrast, common carp (Cyprinus carpio), which lay adhesive, demersal eggs, did not migrate but made only random, short- distance movements. Although data on other species were fewer due to their smaller populations, it appears that Murray cod (Maccullochella peeli) and catfish (Tandanus tandanus), both of which have demersal eggs, show similar movement patterns to carp whereas silver perch (Bidyanus bidyanus), which lays buoyant eggs, is similar to golden perch. The implications of these results, with regard to the establishment and maintenance of populations of each of the species, are discussed.

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Will rising salinity in the Murray - Darling Basin affect common carp (Cyprinus carpio L.)?

Marine and Freshwater Research ◽

10.1071/mf06021 ◽

2006 ◽

Vol 57 (8) ◽

pp. 817 ◽

Cited By ~ 12

Author(s):

Nick R. Whiterod ◽

Keith F. Walker

Keyword(s):

Common Carp ◽

River System ◽

Lethal Effects ◽

Common Carp Cyprinus Carpio ◽

Murray Darling Basin ◽

Aquatic Flora ◽

Salinity Levels ◽

The Common ◽

Mature Fish ◽

Basin Wetlands

Salinisation in the Murray–Darling Basin, Australia, may affect aquatic flora and fauna, including the common carp, an alien species that has become the most common fish in the river system. This study describes the responses of juvenile carp (31–108 mm total length) to salinity levels that prevail in some wetlands of the lower reaches of the River Murray. Carp are moderately tolerant of salinity (direct transfer LC50: 11 715 mg L–1), particularly after slow acclimation (LC50: 13 070 mg L–1), but sub-lethal effects are evident at lower salinities. These include effects on osmoregulation (>7500 mg L–1), behaviour (7500–12 500 mg L–1) and sperm motility in mature fish (150–300 mm) (8330 mg L–1). Salinities in some Murray–Darling Basin wetlands already approach half seawater (17 500 mg L–1) and carp populations in these important nursery areas could be impacted through sub-lethal effects on adults and lethal effects on juveniles, eggs and sperm.

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The Ngarrindjeri nomenclature of birds in the Lower Murray River region, South Australia

Transactions of the Royal Society of South Australia ◽

10.1080/03721426.2018.1534530 ◽

2018 ◽

Vol 143 (1) ◽

pp. 118-146 ◽

Cited By ~ 1

Author(s):

Philip A. Clarke

Keyword(s):

South Australia ◽

Murray River ◽

River Region

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HIGH RESOLUTION PALAEOGEOGRAPHIC MAPPING OF THE FLUVIAL-LACUSTRINE PATCHAWARRA FORMATION IN THE COOPER BASIN, SOUTH AUSTRALIA

The APPEA Journal ◽

10.1071/aj01005 ◽

2002 ◽

Vol 42 (1) ◽

pp. 65 ◽

Cited By ~ 4

Author(s):

P.C. Strong ◽

G.R. Wood ◽

S.C. Lang ◽

A. Jollands ◽

E. Karalaus ◽

...

Keyword(s):

High Resolution ◽

South Australia ◽

River System ◽

Structural Features ◽

Gas Reservoirs ◽

Predictive Tool ◽

Sequence Stratigraphic ◽

Channel Belt ◽

Reservoir Connectivity ◽

Cooper Basin

Fluvial-lacustrine reservoirs in coal-bearing strata provide a particular challenge for reservoir characterisation because of the dominance of coal on the seismic signature and the highly variable reservoir geometry, quality and stratigraphic connectivity. Geological models for the fluvial gas reservoirs in the Permian Patchawarra Formation of the Cooper Basin are critical to minimise the perceived reservoir risks of these relatively deep targets. This can be achieved by applying high-resolution sequence stratigraphic concepts and finescaled seismic mapping. The workflow begins with building a robust regional chronostratigraphic framework, focussing on widespread lacustrine flooding surfaces and unconformities, tied to seismic scale reflectors. This framework is refined by identification of local surfaces that divide the Patchawarra Formation into high-resolution genetic units. A log facies scheme is established based on wireline log character, and calibrated to cores and cuttings, supported by analogue studies, such as the modern Ob River system in Western Siberia. Stacking patterns within each genetic unit are used to determine depositional systems tracts, which can have important reservoir connectivity implications. This leads to the generation of log signature maps for each interval, from which palaeogeographic reconstructions are generated. These maps are drawn with the guiding control of syn-depositional structural features and net/ gross trends. Estimates of fluvial channel belt widths are based on modern and ancient analogues. The resultant palaeogeography maps are used with structural and production data to refine play concepts, as a predictive tool to locate exploration and development drilling opportunities, to assess volumetrics, and to improve drainage efficiency and recovery during production of hydrocarbons.

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Spatial partitioning in the use of structural woody habitat supports the cohabitation of two cod species in a large lowland river

Marine and Freshwater Research ◽

10.1071/mf15067 ◽

2016 ◽

Vol 67 (12) ◽

pp. 1835 ◽

Cited By ~ 4

Author(s):

J. A. Lieschke ◽

J. P. Lyon ◽

P. D. Moloney ◽

S. J. Nicol

Keyword(s):

Lowland River ◽

Specific Interactions ◽

Negative Consequences ◽

Catch Per Unit Effort ◽

Spatial Partitioning ◽

Murray River ◽

Eastern Australia ◽

The Common ◽

Species Specific ◽

Murray Cod

Many freshwater fish worldwide have been shown to use Structural Woody Habitat (SWH) for a variety of reasons. The mid reaches of the Murray River, a large lowland river in south-eastern Australia, was surveyed by boat electrofishing, to investigate the use of SWH type (hollows, rootmass and solids), SWH distance to bank (near bank, intermediate to bank and mid-channel) and the interaction between SWH type and distance to bank. The study found that Murray cod catch per unit effort (CPUE) increased in near-bank areas when hollows were a component of the SWH. The CPUE of trout cod was higher when hollows were present. However, the interactions between distance to bank and hollow SWH were complex and dependent on presence or absence of rootmass. The species-specific interactions between SWH microhabitat and distance to bank found within this study has important relevance for stream managers. The common practice of realigning SWH favours Murray cod over trout cod, which could have negative consequences for the endangered trout cod. More broadly, managers may need to consider a balance of SWH type and where it is placed in the river for the species they are targeting when rehabilitating rivers via the introduction of SWH.

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Gordon Roy Cameron, 1899-1966

Biographical Memoirs of Fellows of the Royal Society ◽

10.1098/rsbm.1968.0005 ◽

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.

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Timing of host-seeking behaviour of the mosquitoes Anopheles annulipes sensu lato Walker and Coquillettidia linealis (Skuse) (Diptera: Culicidae) in the Murray River Valley, South Australia

Australian Journal of Entomology ◽

10.1111/j.1440-6055.2005.00463.x ◽

2005 ◽

Vol 44 (2) ◽

pp. 110-112 ◽

Cited By ~ 1

Author(s):

Craig R Williams

Keyword(s):

South Australia ◽

River Valley ◽

Host Seeking ◽

Murray River

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

Wildlife Research ◽

10.1071/wr11214 ◽

2012 ◽

Vol 39 (8) ◽

pp. 705 ◽

Cited By ~ 8

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.

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

International Journal of Geophysics ◽

10.1155/2018/6480565 ◽

2018 ◽

Vol 2018 ◽

pp. 1-11 ◽

Cited By ~ 6

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.

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