Journal articles: 'Murrumbidgee River'

1

Wasson, Bob, and Jon Olley. "The Murrumbidgee River Catchment, Australia." PAGES news 8, no. 3 (December 2000): 16. http://dx.doi.org/10.22498/pages.8.3.16.

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2

Bowmer, K. H., A. Padovan, R. L. Oliver, W. Korth, and G. G. Ganf. "Physiology of Geosmin Production by Anabaena circinalis Isolated from the Murrumbidgee River, Australia." Water Science and Technology 25, no. 2 (January 1, 1992): 259–67. http://dx.doi.org/10.2166/wst.1992.0060.

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Chemical analysis and sensory assessment of river waters from the Murrumbidgee and Murray Rivers showed geosmin is an important odor compound. Experiments in culture using Anabaena circinalis isolated from the Murrumbidgee River, New South Wales, Australia showed that changes in chlorophyll per unit dry weight resulting from alterations in light intensity were paralleled by similar changes in geosmin/dry weight such that geosmin concentration was correlated with chlorophyll a over an extreme range of light conditions. A.circinalis was a prolific producer of geosmin, but a substantial proportion of the total geosmin was often retained intra-cellularly and released on sonication or treatment with copper. Therefore water treatment processes should avoid cell lysis.

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3

Frazier, Paul, and Ken Page. "The effect of river regulation on floodplain wetland inundation, Murrumbidgee River, Australia." Marine and Freshwater Research 57, no. 2 (2006): 133. http://dx.doi.org/10.1071/mf05089.

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River regulation by headwater dams has altered the flow regime of rivers worldwide. For floodplain rivers, reduced connectivity between the main channel and floodplain wetlands has led to a decline in ecological health. Current river restoration theory advocates a return towards a more natural regime of floodplain wetland inundation. However, for many rivers, a poor understanding of the natural floodplain wetland inundation regime has hampered effective restoration management. This paper describes a technique for quantifying the effect of flow regulation on the inundation regime of floodplain wetlands on an extended reach of the Murrumbidgee River, Australia. A series of Landsat Thematic Mapper (TM) images, captured before and after a set of floods, was analysed to describe the relationship between flow and inundation for a 640 km river reach. These data were combined with historical regulated and modelled natural daily flow data to show that river regulation has reduced the duration and frequency of wetland inundation by ~40%. For the majority of wetlands the capture of small and medium floods in the headwater dams reduced wetland inundation substantially. However, for low connecting wetlands in reaches upstream of the main irrigation off-takes, summer irrigation flows have increased inundation.

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4

Shields, J., and R. Good. "Environmental water in a regulated river system: the Murrumbidgee River planning approach to the determination of environmental needs." Water Science and Technology 45, no. 11 (June 1, 2002): 241–49. http://dx.doi.org/10.2166/wst.2002.0401.

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The major platform of the Council of Australian Governments (COAG) water reform program is the equitable and sustainable sharing of surface and groundwater resources between the environment and consumptive water users. In the regulated section of the Murrumbidgee River below Burrinjuck Dam, approximately 2,800 GL of the available surface water (4,300 GL) is diverted or extracted for irrigation uses in the Murrumbidgee Irrigation Area and Districts, and in the Coleambally Irrigation Area. Environmental flow rules have been developed for the Murrumbidgee which provide for an allocation of water to the environment but on the basis of no more than a 10% impact on farm-gate income of irrigation farmers. This provision limits the volume of water that can be used for environmental purposes, so the most effective use must be made of it. To identify and quantify the benefits to the environment of this limited additional volume of water and to determine the most effective use of the water, an ldquo;environmental spreadsheet matrix” has been developed. This paper outlines the development and use of the matrix in the planned implementation of flow regimes appropriate to the protection and enhancement of riparian and aquatic ecosystems and ecological processes.

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Crook, David A., Damien J. O'Mahony, Bronwyn M. Gillanders, Andrew R. Munro, Andrew C. Sanger, Stephen Thurstan, and Lee J. Baumgartner. "Contribution of stocked fish to riverine populations of golden perch (Macquaria ambigua) in the Murray–Darling Basin, Australia." Marine and Freshwater Research 67, no. 10 (2016): 1401. http://dx.doi.org/10.1071/mf15037.

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Stocking of native fishes is conducted to augment riverine fisheries in many parts of the world, yet most stocking activities are conducted without empirical information on their effectiveness or impacts. In the Murray–Darling Basin (MDB), Australia, stocking has been underway for several decades to maintain recreational fisheries. We stocked chemically tagged golden perch (Macquaria ambigua) fingerlings in three rivers to determine the proportions of stocked fish within populations of the species. Stocked sites were monitored for up to 5 years in the Murrumbidgee River, Edward River and Billabong Creek and non-stocked sites were monitored in the Murray River. Catch per unit effort of stocked year classes increased substantially in Billabong Creek, with stocked fish contributing 100 (2005), 79 (2006) and 92% (2007). Chemically tagged fish comprised 18–38% of the respective age classes in the Murrumbidgee and Edward rivers and there was little evidence of natural recruitment in the non-stocked Murray River. Tagged fish generally attained the legal minimum size within 4 years and had dispersed up to 60km from the original release location. Our results demonstrate that artificial stocking has the potential to strongly influence the abundance and population structure of golden perch in rivers of the MDB.

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6

Hogg, ID, and RH Norris. "Effects of runoff from land clearing and urban development on the distribution and abundance of macroinvertebrates in pool areas of a river." Marine and Freshwater Research 42, no. 5 (1991): 507. http://dx.doi.org/10.1071/mf9910507.

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We examined the effects of runoff from urban land clearing and development on the macroinvertebrate pool fauna of the Murrumbidgee River, Australia, over 1 year. Tuggeranong Creek, which flows through the urban development, often recorded higher instantaneous (storm) discharges than did the Murrumbidgee River. Monitoring of suspended solids during one storm event revealed high concentrations of suspended solids (max. 560 mg L-1) entering the Murrumbidgee River for an 8 h period. Such concentrations were not detected by regular two-monthly sampling, although concentrations were generally higher downstream of Tuggeranong Creek. Analysis of substratum particle size revealed a higher proportion of fine inorganic material (<250 pm) at stations downstream of Tuggeranong Creek, suggesting a settling of fine material discharged during storm events. Number of taxa and macroinvertebrate density were lower at downstream stations. We conclude that the deposition of fine inorganic sediment following storm events, and the resulting change in the composition of the substratum, was the major cause of low invertebrate numbers in pools downstream of the cleared catchment.

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7

Kingsford, R. T., and R. F. Thomas. "Use of satellite image analysis to track wetland loss on the Murrumbidgee River floodplain in arid Australia, 1975-1998." Water Science and Technology 45, no. 11 (June 1, 2002): 45–53. http://dx.doi.org/10.2166/wst.2002.0378.

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Demonstrating the extent of wetland loss and its causes are essential for policy makers and managers. We used Landsat satellite imagery to show major wetland loss in the Lower Murrumbidgee floodplain on the Murrumbidgee River in arid Australia. Stratification of the floodplain according to hydrology, use of imagery from the same time of year and the separation of developed areas, using ancillary information were essential. There was considerable loss of floodplain area over a 23 year period (1975-1998), mainly in the Nimmie-Caira stratum (59% loss), as wetland areas were replaced by irrigation bays. There was also a significant increase in fragmentation. For floodplain areas distant from the river, flooding patterns were more difficult to identify because of infrequent flooding and primary reliance on rainfall. Landsat imagery provided a powerful tool for demonstrating long-term changes in wetland area, even in highly variable environments. Such information can demonstrate the ecological costs of water resource development on floodplains, forming a basis for policy and management of rivers.

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8

Couch, Alan J., Peter J. Unmack, Fiona J. Dyer, and Mark Lintermans. "Who’s your mama? Riverine hybridisation of threatened freshwater Trout Cod and Murray Cod." PeerJ 4 (October 27, 2016): e2593. http://dx.doi.org/10.7717/peerj.2593.

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Rates of hybridization and introgression are increasing dramatically worldwide because of translocations, restocking of organisms and habitat modifications; thus, determining whether hybridization is occuring after reintroducing extirpated congeneric species is commensurately important for conservation. Restocking programs are sometimes criticized because of the genetic consequences of hatchery-bred fish breeding with wild populations. These concerns are important to conservation restocking programs, including those from the Australian freshwater fish family, Percichthyidae. Two of the better known Australian Percichthyidae are the Murray Cod,Maccullochella peeliiand Trout Cod,Maccullochella macquariensiswhich were formerly widespread over the Murray Darling Basin. In much of the Murrumbidgee River, Trout Cod and Murray Cod were sympatric until the late 1970s when Trout Cod were extirpated. Here we use genetic single nucleotide polymorphism (SNP) data together with mitochondrial sequences to examine hybridization and introgression between Murray Cod and Trout Cod in the upper Murrumbidgee River and consider implications for restocking programs. We have confirmed restocked riverine Trout Cod reproducing, but only as inter-specific matings, in the wild. We detected hybrid Trout Cod–Murray Cod in the Upper Murrumbidgee, recording the first hybrid larvae in the wild. Although hybrid larvae, juveniles and adults have been recorded in hatcheries and impoundments, and hybrid adults have been recorded in rivers previously, this is the first time fertile F1 have been recorded in a wild riverine population. The F1 backcrosses with Murray cod have also been found to be fertile. All backcrosses noted were with pure Murray Cod. Such introgression has not been recorded previously in these two species, and the imbalance in hybridization direction may have important implications for restocking programs.

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9

Usowicz, B., M. I. Łukowski, C. Rüdiger, J. P. Walker, and W. Marczewski. "Thermal properties of soil in the Murrumbidgee River Catchment (Australia)." International Journal of Heat and Mass Transfer 115 (December 2017): 604–14. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2017.08.021.

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10

Braaten, R., and G. Gates. "Groundwater–surface water interaction in inland New South Wales: a scoping study." Water Science and Technology 48, no. 7 (October 1, 2003): 215–24. http://dx.doi.org/10.2166/wst.2003.0443.

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Groundwater and surface water have traditionally been managed separately in New South Wales (NSW). However, where rivers and aquifers are hydraulically connected, groundwater pumping has the potential to deplete streamflow. To highlight the major areas of connection in inland NSW, major streams were overlaid with groundwater depth data and the locations of irrigation bores. A consistent pattern was revealed related to basin geomorphology. The main areas of connection are the mid-sections of the major rivers where alluvial systems are well developed yet still narrow and constricted and groundwater depths are shallow. The mapping was validated and the processes explored by calculating water balances for a connected and disconnected reach in the Murrumbidgee River. These showed that, in highly connected reaches, river losses and/or gains are closely related to groundwater levels.

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11

Thorton, S. A., and S. V. Briggs. "A survey of hydrological changes to wetlands of the Murrumbidgee River." Wetlands Australia 13, no. 1 (January 23, 2010): 1. http://dx.doi.org/10.31646/wa.158.

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12

Skinner, Stephen. "Some silkweeds (Zygnemataceae, Zygnemales, Charophyceae) from the Upper Murrumbidgee River catchment." Telopea 18 (September 22, 2015): 273–95. http://dx.doi.org/10.7751/telopea8752.

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13

Elmahdi, Amgad, Hector Malano, and Teri Etchells. "System dynamics and auto-calibration framework for NSM model: Murrumbidgee River." International Journal of Water 3, no. 4 (2007): 381. http://dx.doi.org/10.1504/ijw.2007.016321.

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14

PAGE, KENNETH, GERALD NANSON, and DAVID PRICE. "Chronology of Murrumbidgee River palaeochannels on the Riverine Plain, southeastern Australia." Journal of Quaternary Science 11, no. 4 (July 1996): 311–26. http://dx.doi.org/10.1002/(sici)1099-1417(199607/08)11:4<311::aid-jqs256>3.0.co;2-1.

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15

Hawkins, W. J., and D. A. Geering. "Water Quality Management – A Total Catchment Management Approach." Water Science and Technology 21, no. 2 (February 1, 1989): 281–88. http://dx.doi.org/10.2166/wst.1989.0064.

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Water quality standards set in the past have not helped resource managers in the decisions that they face in seeking sustainable development. Resource managers are looking for meaningful information on water quality so as to evaluate the resource, set priorities for action, and to monitor progress. Resource managers need to know how water quality affects, and is affected by, catchment uses and activities. Examples of three wild and scenic rivers, the Nymboida, Murrumbidgee, and Hawkesbury/Nepean River systems, demonstrate how a ‘Total Catchment Management' approach to resource use and resource protection has advantages for water quality management.

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16

McDonald, Suzanne, Jennifer M. Pringle, Paul D. Prenzler, Andrea G. Bishop, and Kevin Robards. "Bioavailability of dissolved organic carbon and fulvic acid from an Australian floodplain river and billabong." Marine and Freshwater Research 58, no. 2 (2007): 222. http://dx.doi.org/10.1071/mf06085.

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Dissolved organic carbon (DOC) is a vital resource for heterotrophic bacteria in aquatic ecosystems. The bioavailability of fulvic acid, which comprises the majority of aquatic DOC, is not well understood. The present study examined the bioavailability of bulk DOC and fulvic acid from two contrasting but inter-related water bodies: the Murrumbidgee River and adjacent Berry Jerry Lagoon. Bacteria utilised fulvic acids; however, bulk DOC was more bioavailable. Bacteria were able to utilise Murrumbidgee River DOC and fulvic acid more readily than Berry Jerry Lagoon DOC and fulvic acid, suggesting that the quality of carbon may be an important factor to consider when evaluating lateral exchange of nutrients between the main channel and floodplain. Chemical characteristics of fulvic acids appeared to explain some of the variation in fulvic acid bioavailability. The higher the molecular weight and complexity of the fulvic acid, the longer it took for bacteria to utilise the substrate (lag phase), but the larger the number of bacteria that grew on the substrate. The present study calls attention to the need for further multidisciplinary studies to address the quality of carbon in riverine-floodplain ecosystems.

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17

Charles, S. P., B. C. Bates, and N. R. Viney. "Linking atmospheric circulation to daily rainfall patterns across the Murrumbidgee River Basin." Water Science and Technology 48, no. 7 (October 1, 2003): 233–40. http://dx.doi.org/10.2166/wst.2003.0445.

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The hydrological cycle in Australia covers an extraordinary range of climatic and hydrologic regimes. It is now widely accepted that Australian hydrology is significantly different from all other regions and continents with the partial exception of southern Africa. Rainfall variability is very high in almost all regions with respect to amount and the lengths of wet and dry spells. These factors are keys to the behaviour and health of Australian aquatic ecosystems and water resources. Thus assessment of how rainfall may change under a potential future climate is critical. For a case study of the Murrumbidgee River Basin (MRB), a statistical downscaling model that links broad scale atmospheric circulation to multi-site, daily precipitation is assessed using observed data. This model can be driven with climate model simulations to produce rainfall scenarios at the scale required by impacts models. These can then be used in probabilistic risk assessments of climate change impacts on river health. These issues will be discussed in the context of assessing the potential impacts of precipitation changes due to projected climate change on river health.

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18

Vink, S., M. Bormans, P. W. Ford, and N. J. Grigg. "Quantifying ecosystem metabolism in the middle reaches of Murrumbidgee River during irrigation flow releases." Marine and Freshwater Research 56, no. 2 (2005): 227. http://dx.doi.org/10.1071/mf04187.

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The relative importance of floodplain carbon inputs and in-stream metabolic processes have not been well quantified in major Australian rivers. We quantified seasonal phytoplankton primary production and net ecosystem production during irrigation flow regimes at four sites each located ~100 km apart in the middle Murrumbidgee River. During flow periods dominated by storage release, ecosystem gross primary productivity, system respiration and phytoplankton chlorophyll concentrations all increased downstream so that overall net ecosystem metabolism was strongly net heterotrophic upstream and closer to balanced downstream. Phytoplankton production dominated ecosystem production throughout the entire reach and was likely to have been phosphorus limited throughout the study. Additionally, phytoplankton biomass was limited by short residence times at the upstream sites and nitrogen limited downstream in summer, despite an increase in turbidity. Both production and respiration rates were generally lower in winter, as expected, owing to lower temperatures.

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19

Jones, Gary J., and Wolfgang Korth. "In situ production of volatile odour compounds by river and reservoir phytoplankton populations in Australia." Water Science and Technology 31, no. 11 (June 1, 1995): 145–51. http://dx.doi.org/10.2166/wst.1995.0424.

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The production of volatile odour compounds by freshwater phytoplankton was monitored weekly from November to April (summer period) 1990/91 at two sites: (1) Hay Weir pool on the Murrumbidgee River, NSW and (2) Carcoar Dam, near Blayney, NSW. During this period, the phytoplankton of the Murrumbidgee River was dominated by two species of the diatom Melosira, and the cyanobacterium Anabaena sp. Carcoar Dam was mostly dominated by the cyanobacteria Microcystis aeruginosa and Anabaena sp. The major odour compounds detected were geosmin, β-cyclocitral, β-ionone, geranylacetone, and 6-methylhept-5-en-2-one. Clmparison of multivariate statistical analyses of the volatile odour compound profiles and algal population data provided strong evidence for the hypothesis that the major source of many of these odour compounds was the phytoplankton. Total (intra+extracellular) geosmin concentration was strongly correlated with Anabaena abundance with no significant difference in geosmin production between sites. From the overall average of 10 fg geosmin cell−1 it is possible to predict that taste and odour problems, due to geosmin, may be experienced at Anabaena abundances of > 1,000-2,000 cells ml−1 in temperate Australian waters. β-cyclocitral concentration was correlated with Microcystis abundance at Carcoar Dam (10 fg β-cyclocitral cell−1), but with Anabaena sp. abundance at Hay Weir (2 fg cell−1).

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20

Robertson, Alistar I., Adrienne Burns, and Terry J. Hillman. "Scale-dependent lateral exchanges of organic carbon in a dryland river during a high-flow experiment." Marine and Freshwater Research 67, no. 9 (2016): 1293. http://dx.doi.org/10.1071/mf15371.

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We estimated the magnitude and direction of exchanges of particulate organic carbon (POC) and dissolved organic carbon (DOC) between the river and four floodplain wetlands (billabongs) and a 140-km reach of riverbank and floodplain of the Murrumbidgee River during a managed high-flow experiment. There was a net transport of organic carbon from the river to billabongs during connection, ranging from 87 to 525kg POC per billabong or from 1.4 to 5.7g POC m–2 of billabong sediment surface area and from 36 to 4357kg DOC, or from 0.4 to 29.8g DOC m–2. At the whole-reach scale, there was a net loss of 754Mg POC from the river channel to riverbank and floodplain and a net input of 821Mg DOC to the river channel. This DOC input, which was small relative to the total organic carbon in transit, was likely to have contributed significantly to oxidative processes in the river. The DOC entering the river was derived from litter and soils in riverbank habitats or from abraded biofilms in the river channel. The results support an extended flood-pulse concept that includes in-channel flow pulses as important elements in the biogeochemistry of dryland rivers. Piggybacking dam releases on tributary flows to deliver in-channel flows delivers significant benefit for riverine organic-matter cycles.

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21

Peischl, S., J. P. Walker, C. Rüdiger, N. Ye, Y. H. Kerr, E. Kim, R. Bandara, and M. Allahmoradi. "The AACES field experiments: SMOS calibration and validation across the Murrumbidgee River catchment." Hydrology and Earth System Sciences 16, no. 6 (June 22, 2012): 1697–708. http://dx.doi.org/10.5194/hess-16-1697-2012.

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Abstract. Following the launch of the European Space Agency's Soil Moisture and Ocean Salinity (SMOS) mission on 2 November 2009, SMOS soil moisture products need to be rigorously validated at the satellite's approximately 45 km scale and disaggregation techniques for producing maps with finer resolutions tested. The Australian Airborne Cal/val Experiments for SMOS (AACES) provide the basis for one of the most comprehensive assessments of SMOS data world-wide by covering a range of topographic, climatic and land surface variability within an approximately 500 × 100 km2 study area, located in South-East Australia. The AACES calibration and validation activities consisted of two extensive field experiments which were undertaken across the Murrumbidgee River catchment during the Australian summer and winter season of 2010, respectively. The datasets include airborne L-band brightness temperature, thermal infrared and multi-spectral observations at 1 km resolution, as well as extensive ground measurements of near-surface soil moisture and ancillary data, such as soil temperature, soil texture, surface roughness, vegetation water content, dew amount, leaf area index and spectral characteristics of the vegetation. This paper explains the design and data collection strategy of the airborne and ground component of the two AACES campaigns and presents a preliminary analysis of the field measurements including the application and performance of the SMOS core retrieval model on the diverse land surface conditions captured by the experiments. The data described in this paper are publicly available from the website: http://www.moisturemap.monash.edu.au/aaces.

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22

Peischl, S., J. P. Walker, C. Rüdiger, N. Ye, Y. H. Kerr, E. Kim, R. Bandara, and M. Allahmoradi. "The AACES field experiments: SMOS calibration and validation across the Murrumbidgee River catchment." Hydrology and Earth System Sciences Discussions 9, no. 3 (March 2, 2012): 2763–95. http://dx.doi.org/10.5194/hessd-9-2763-2012.

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Abstract. Following the launch of the European Space Agency's Soil Moisture and Ocean Salinity (SMOS) mission on 2 November 2009, SMOS products need to be rigorously validated at the satellite's approximately 45 km scale, and disaggregation techniques for maps with finer resolutions tested. The Australian Airborne Cal/val Experiments for SMOS (AACES) provide the basis for one of the most comprehensive assessments of SMOS data world-wide by covering a range of topographic, climatic and land surface variability within an approximately 500 × 100 km2 study area, located in South-East Australia. The AACES calibration and validation activities consisted of two extensive field experiments which were undertaken across the Murrumbidgee River catchment during the Australian summer and winter season of 2010, respectively. The data sets include airborne L-band brightness temperature, thermal infrared and multi-spectral observations at 1 km resolution, as well as extensive ground measurements of near-surface soil moisture and ancillary data, such as soil temperature, soil texture, surface roughness, vegetation water content, dew amount, leaf area index and spectral characteristics of the vegetation. This paper explains the design and data collection strategy of the airborne and ground component of the two AACES campaigns and presents a preliminary analysis of the field measurements including the application and performance of the SMOS core retrieval model on the diverse land surface conditions captured by the experiments. The data described in this paper are publicly available from the website: http://www.moisturemap.monash.edu.au/aaces.

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23

Speer, M. S. "Digitization of weekly Murrumbidgee River heights at Hay South Eastern Australia 1873-2017." Geoscience Data Journal 5, no. 1 (June 2018): 9–13. http://dx.doi.org/10.1002/gdj3.54.

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24

Chessman, Bruce C., and Lorraine Hardwick. "Water Regimes and Macroinvertebrate Assemblages in Floodplain Wetlands of the Murrumbidgee River, Australia." Wetlands 34, no. 4 (April 15, 2014): 661–72. http://dx.doi.org/10.1007/s13157-014-0532-3.

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25

Growns, Ivor, Ian Wooden, and Craig Schiller. "Use of instream wood habitat by Trout Cod Maccullochella macquariensis (Cuvier) in the Murrumbidgee River." Pacific Conservation Biology 10, no. 4 (2004): 261. http://dx.doi.org/10.1071/pc040261.

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Microhabitat use of instream wood habitat by Trout Cod Maccullochella macquariensis (Cuvier), a critically endangered species with a restricted distribution, was examined in the Murrumbidgee River in New South Wales, Australia. Habitat variables were scored or measured at 100 m intervals along the river or wherever Trout Cod were captured using electrofishing. The occurrence of Trout Cod was significantly dependent on the presence of instream woody habitat and 95% of samples where trout cod were caught were associated with the presence of woody habitat. Trout Cod were more likely to be found on simply-structured woody habitats, away from the river-bank and their abundance showed no relationship with water velocity. The low abundance of other fish species at the sampling sites suggests that the relationships demonstrated are not due to inter-species interactions. The results will assist with specific management actions to restore and protect populations of this endangered species.

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Page, K. J., G. C. Nanson, and P. S. Frazier. "Floodplain Formation and Sediment Stratigraphy Resulting from Oblique Accretion on the Murrumbidgee River, Australia." Journal of Sedimentary Research 73, no. 1 (January 1, 2003): 5–14. http://dx.doi.org/10.1306/070102730005.

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27

Higgisson, William, Dianne Gleeson, Linda Broadhurst, and Fiona Dyer. "Genetic diversity and gene flow patterns in two riverine plant species with contrasting life-history traits and distributions across a large inland floodplain." Australian Journal of Botany 68, no. 5 (2020): 384. http://dx.doi.org/10.1071/bt20074.

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Gene flow is a key evolutionary driver of spatial genetic structure, reflecting demographic processes and dispersal mechanisms. Understanding how genetic structure is maintained across a landscape can assist in setting conservation objectives. In Australia, floodplains naturally experience highly variable flooding regimes that structure the vegetation communities. Flooding plays an important role, connecting communities on floodplains and enabling dispersal via hydrochory. Water resource development has changed the lateral-connectivity of floodplain-river systems. One possible consequence of these changes is reduced physical and subsequent genetic connections. This study aimed to identify and compare the population structure and dispersal patterns of tangled lignum (Duma florulenta) and river cooba (Acacia stenophylla) across a large inland floodplain using a landscape genetics approach. Both species are widespread throughout flood prone areas of arid and semiarid Australia. Tangled lignum occurs on floodplains while river cooba occurs along rivers. Leaves were collected from 144 tangled lignum plants across 10 sites and 84 river cooba plants across 6 sites, on the floodplain of the lower and mid Lachlan River, and the Murrumbidgee River, NSW. DNA was extracted and genotyped using DArTseq platforms (double digest RADseq). Genetic diversity was compared with floodplain-river connection frequency, and genetic distance (FST) was compared with river distance, geographic distance and floodplain-river connection frequency between sites. Genetic similarity increased with increasing floodplain-river connection frequency in tangled lignum but not in river cooba. In tangled lignum, sites that experience more frequent flooding had greater genetic diversity and were more genetically homogenous. There was also an isolation by distance effect where increasing geographic distance correlated with increasing genetic differentiation in tangled lignum, but not in river cooba. The distribution of river cooba along rivers facilitates regular dispersal of seeds via hydrochory regardless of river level, while the dispersal of seeds of tangled lignum between patches is dependent on flooding events. The genetic impact of water resource development may be greater for species which occur on floodplains compared with species along river channels.

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28

Wen, Li, Kerrylee Rogers, Joanne Ling, and Neil Saintilan. "The impacts of river regulation and water diversion on the hydrological drought characteristics in the Lower Murrumbidgee River, Australia." Journal of Hydrology 405, no. 3-4 (August 2011): 382–91. http://dx.doi.org/10.1016/j.jhydrol.2011.05.037.

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29

Linternmans, M. "The Status and Distribution of The Platypus (Ornithorhynchus anatinus) In the Australian Capital Territory with Notes on Some Localised Declines." Australian Mammalogy 20, no. 2 (1998): 306. http://dx.doi.org/10.1071/am98314.

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Incidental captures of platypuses have been recorded during fisheries research programs conducted in the Australian Capital Territory over the past 25 years. Ad hoc records have also been recorded from Australian Capital Territory Parks and Conservation Service staff and members of the public as part of an ongoing database project known as the ACT Vertebrate Atlas. Information is presented on the distribution and relative abundance of platypuses in the major ACT streams. There appear to have been some localised declines in a number of ACT platypus populations in the Murrumbidgee, Molonglo and Queanbeyan River systems. Possible reasons behind these declines are discussed.

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Whitford, Troy. "An Historical Analysis of Cattle Grazing Practices on the Murrumbidgee River Flood Plain 1895-1996." Rural Society 9, no. 2 (January 1999): 457–72. http://dx.doi.org/10.5172/rsj.9.2.457.

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31

Ren, Shiquan, and Richard T. Kingsford. "Modelling impacts of regulation on flows to the Lowbidgee floodplain of the Murrumbidgee River, Australia." Journal of Hydrology 519 (November 2014): 1660–67. http://dx.doi.org/10.1016/j.jhydrol.2014.09.003.

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32

Wen, Li. "Reconstruction natural flow in a regulated system, the Murrumbidgee River, Australia, using time series analysis." Journal of Hydrology 364, no. 3-4 (January 2009): 216–26. http://dx.doi.org/10.1016/j.jhydrol.2008.10.023.

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Dietrich, Claude R., Timothy R. Green, and Anthony J. Jakeman. "An analytical model for stream sediment transport: application to Murray and Murrumbidgee river reaches, Australia." Hydrological Processes 13, no. 5 (April 15, 1999): 763–76. http://dx.doi.org/10.1002/(sici)1099-1085(19990415)13:5<763::aid-hyp779>3.0.co;2-c.

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34

Kandasamy, J., D. Sounthararajah, P. Sivabalan, A. Chanan, S. Vigneswaran, and M. Sivapalan. "Socio-hydrologic drivers of the pendulum swing between agricultural development and environmental health: a case study from Murrumbidgee River basin, Australia." Hydrology and Earth System Sciences 18, no. 3 (March 13, 2014): 1027–41. http://dx.doi.org/10.5194/hess-18-1027-2014.

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Abstract. This paper presents a case study centred on the Murrumbidgee River basin in eastern Australia. It illustrates the dynamics of the balance between water extraction and use for food production, and efforts to mitigate and reverse consequent degradation of the riparian environment. In particular, the paper traces the history of a pendulum swing between an exclusive focus on agricultural development and food production in the initial stages and its attendant socio-economic benefits, followed by the gradual realization of the adverse environmental impacts, subsequent efforts to mitigate these with the use of remedial measures, and ultimately concerted efforts and externally imposed solutions to restore environmental health and ecosystem services. The 100-year history of development within the Murrumbidgee is divided into four eras, each underpinned by the dominance of different values and norms and turning points characterized by their changes. The various stages of development can be characterized by the dominance, in turn, of infrastructure systems, policy frameworks, economic instruments, and technological solutions. The paper argues that, to avoid these costly pendulum swings, management needs to be underpinned by long-term coupled socio-hydrologic system models that explicitly include the two-way coupling between human and hydrological systems, including the slow evolution of human values and norms relating to water and the environment. Such coupled human–water system models can provide insights into dominant controls of the trajectory of their co-evolution in a given system, and can also be used to interpret patterns of co-evolution of such coupled systems in different places across gradients of climatic, socio-economic and socio-cultural conditions, and in this way to help develop generalizable understanding.

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Kandasamy, J., D. Sounthararajah, P. Sivabalan, A. Chanan, S. Vigneswaran, and M. Sivapalan. "Socio-hydrologic drivers of the Pendulum Swing between agriculture development and environmental health: a case study from Murrumbidgee River Basin, Australia." Hydrology and Earth System Sciences Discussions 10, no. 6 (June 5, 2013): 7197–233. http://dx.doi.org/10.5194/hessd-10-7197-2013.

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Abstract. This paper presents a case study centered on the Murrumbidgee river basin in eastern Australia that illustrates the dynamics of the balance between water extraction and use for food production and efforts to mitigate and reverse consequent degradation of the riparian environment. In particular the paper traces the history of a pendulum swing between an exclusive focus on agricultural development and food production in the initial stages and its attendant socio-economic benefits, followed by the gradual realization of the adverse environmental impacts, efforts to mitigate these with the use of remedial measures, and ultimately concerted efforts and externally imposed solutions to restore environmental health and ecosystem services. The 100 yr history of development within Murrumbidgee is divided into four eras, each underpinned by the dominance of different norms/goals and turning points characterized by their changes. The various stages of development can be characterized by the dominance, in turn, of infrastructure systems, policy frameworks, economic instruments, and technological solutions. The paper argues that, to avoid these costly pendulum swings, management needs to be underpinned by long-term coupled socio-hydrologic system models that explicitly include the two-way coupling between human and hydrological systems, including evolution of human values/norms relating to water and the environment. Such coupled human-water system models can provide insights into dominant controls of the trajectory of their co-evolution in a given system, and can also be used to interpret patterns of co-evolution of such coupled systems in different places across gradients of climatic, socio-economic and socio-cultural conditions, and in this way to help develop generalizable understanding.

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Verstraeten, Gert, Ian P. Prosser, and Peter Fogarty. "Predicting the spatial patterns of hillslope sediment delivery to river channels in the Murrumbidgee catchment, Australia." Journal of Hydrology 334, no. 3-4 (February 2007): 440–54. http://dx.doi.org/10.1016/j.jhydrol.2006.10.025.

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Ryder, Darren S., Robyn J. Watts, Errol Nye, and Adrienne Burns. "Can flow velocity regulate epixylic biofilm structure in a regulated floodplain river?" Marine and Freshwater Research 57, no. 1 (2006): 29. http://dx.doi.org/10.1071/mf05099.

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Scour is one of the most important regulators of biofilm structure and function, especially in floodplain rivers where low gradients and flood frequencies limit potential for scouring. In this study, we experimentally examined the effects of flow velocity on the biomass and taxonomic composition of epixylic biofilms from floodplain reaches of the Murrumbidgee River, south-eastern Australia. Six blocks from each combination of colonisation period (30 or 70 days) and condition (wet or dried), were individually exposed to no velocity (control), or velocities of 0.3 m s−1 (low), 0.55 m s−1 (intermediate), or 1 m s−1 (high) in a laboratory flume. Biofilms exposed to all the experimental velocities had significantly lower dry mass (F3,94; P < 0.001), ash-free dry mass (F3,94; P < 0.001) and chlorophyll a (F3,94; P < 0.001) than the control. Losses of ash-free dry mass (F1,94; P < 0.05) and chlorophyll a (F1,94; P < 0.001) were significantly higher from wet biofilms exposed to each velocity than from dried biofilms. All velocities resulted in a substantial reduction in taxonomic richness among all treatments, with filamentous chlorophytes completely removed by velocities of 0.55 m s−1. These results indicate the potential to delineate thresholds for the response of biofilm biomass and algal taxa to flow velocity in floodplain rivers based on knowledge of antecedent conditions regulating biofilm development. This information significantly improves our understanding of the potential for ecological change using environmental flow releases in low-gradient floodplain rivers.

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Kingsford, R. T., and R. F. Thomas. "Destruction of Wetlands and Waterbird Populations by Dams and Irrigation on the Murrumbidgee River in Arid Australia." Environmental Management 34, no. 3 (August 24, 2004): 383–96. http://dx.doi.org/10.1007/s00267-004-0250-3.

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Page, Ken, Arthur Read, Paul Frazier, and Nick Mount. "The effect of altered flow regime on the frequency and duration of bankfull discharge: Murrumbidgee River, Australia." River Research and Applications 21, no. 5 (2005): 567–78. http://dx.doi.org/10.1002/rra.828.

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Forbes, Jamin P., Robyn J. Watts, Wayne A. Robinson, Lee J. Baumgartner, Aldo S. Steffe, and Jeff J. Murphy. "Recreational Fishing Effort, Catch, and Harvest for Murray Cod and Golden Perch in the Murrumbidgee River, Australia." North American Journal of Fisheries Management 35, no. 4 (July 2015): 649–58. http://dx.doi.org/10.1080/02755947.2015.1032452.

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Woolfrey, A. R., and P. G. Ladd. "Habitat preference and reproductive traits of a major Australian riparian tree species (Casuarina cunninghamiana)." Australian Journal of Botany 49, no. 6 (2001): 705. http://dx.doi.org/10.1071/bt01009.

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The population structure and reproductive biology of the river oak (Casuarina cunninghamiana) were studied along the Murrumbidgee River on the Southern Tablelands of eastern Australia. The species has cone-like infructescences but is not serotinous, with samaras released when they are mature. Samaras were mostly distributed by wind close to female trees but were also carried by water. The first year of study (1985) appeared to be a mast year for seed production with much lower seed fall in the following year. Seedling establishment was spatially very variable, mostly under female canopies and appeared earlier on soil within the river channel than on the bank. Turnover was high and seedlings in the river channel generally died after being inundated. Most trees were within 3 m of the mean river level. However, the total distribution of adults was within the envelope of maximum floods in the area but establishment was not dependent on floods. The population structure was the result of yearly recruitment, although episodic events (floods, drought) may enhance or decrease establishment. Pot-trial results paralleled the field situation with substrate and water-table level not affecting germination of seed but strongly influencing seedling growth. Plants grew best on cobble substrates under a low water-table regime and poorly on cobbles with high water and sandy substrate under all water-table levels. Cobble banks seemed the best substrate for growth within the river channel and establishment may be prolific. Less-abundant seedling establishment occurred upslope but controls over this were not investigated.

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Conyers, M. K., I. Hume, G. Summerell, D. Slinger, M. Mitchell, and R. Cawley. "The ionic composition of the streams of the mid-Murrumbidgee River: Implications for the management of downstream salinity." Agricultural Water Management 95, no. 5 (May 2008): 598–606. http://dx.doi.org/10.1016/j.agwat.2008.01.007.

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Wallbrink, P. J., A. S. Murray, J. M. Olley, and L. J. Olive. "Determining sources and transit times of suspended sediment in the Murrumbidgee River, New South Wales, Australia, using fallout137Cs and210Pb." Water Resources Research 34, no. 4 (April 1998): 879–87. http://dx.doi.org/10.1029/97wr03471.

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Kingsford, R. T. "Ecological Impacts and Institutional and Economic Drivers for Water Resource Development--a Case Study of the Murrumbidgee River, Australia." Aquatic Ecosystem Health & Management 6, no. 1 (January 2003): 69–79. http://dx.doi.org/10.1080/14634980301480.

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Mueller, Daniela, Zenobia Jacobs, Tim J. Cohen, David M. Price, Ivars V. Reinfelds, and James Shulmeister. "Revisiting an arid LGM using fluvial archives: a luminescence chronology for palaeochannels of the Murrumbidgee River, south-eastern Australia." Journal of Quaternary Science 33, no. 7 (August 24, 2018): 777–93. http://dx.doi.org/10.1002/jqs.3059.

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O'Gorman, Emily. "Growing rice on the Murrumbidgee River: cultures, politics, and practices of food production and water use, 1900 to 2012." Journal of Australian Studies 37, no. 1 (March 2013): 96–115. http://dx.doi.org/10.1080/14443058.2012.748673.

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Higgisson, William P., Paul O. Downey, and Fiona J. Dyer. "Changes in Vegetation and Geomorphological Condition 10 Years after Riparian Restoration." Water 11, no. 6 (June 14, 2019): 1252. http://dx.doi.org/10.3390/w11061252.

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Riparian restoration is an important objective for landscape managers seeking to redress the widespread degradation of riparian areas and the ecosystem services they provide. This study investigated the long-term outcomes of ‘one-off’ restoration activities undertaken in the Upper Murrumbidgee Catchment, NSW, Australia. The objective of the restoration was to protect and enhance riparian vegetation and control erosion, and consequently reduce sediment and nutrient delivery into the Murrumbidgee River. To evaluate the outcomes 10 years after restoration, rapid riparian vegetation and geomorphological assessments were undertaken at 29 sites spanning the four different restoration methods used (at least five replicates per treatment), as well as at nine comparable untreated sites. We also trialed the use of aerial imagery to compare width of riparian canopy vegetation and projective foliage cover prior to restoration with that observed after 10 years. Aerial imagery demonstrated the width of riparian canopy vegetation and projective foliage cover increased in all restored sites, especially those with native plantings. The rapid assessment process indicated that 10 years after riparian restoration, the riparian vegetation was in a better condition at treated sites compared to untreated sites. Width of riparian canopy vegetation, native mid-storey cover, native canopy cover and seedling recruitment were significantly greater in treated sites compared to untreated sites. Geomorphological condition of treated sites was significantly better than untreated sites, demonstrating the importance of livestock exclusion to improve bank and channel condition. Our findings illustrate the value of ‘one-off’ restoration activities in achieving long-term benefits for riparian health. We have demonstrated that rapid assessments of the vegetation and geomorphological condition can be undertaken post-hoc to determine the long-term outcomes, especially when supported with analysis of historical aerial imagery.

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van Emmerik, T. H. M., Z. Li, M. Sivapalan, S. Pande, J. Kandasamy, H. H. G. Savenije, A. Chanan, and S. Vigneswaran. "Socio-hydrologic modeling to understand and mediate the competition for water between agriculture development and environmental health: Murrumbidgee River basin, Australia." Hydrology and Earth System Sciences 18, no. 10 (October 29, 2014): 4239–59. http://dx.doi.org/10.5194/hess-18-4239-2014.

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Abstract. Competition for water between humans and ecosystems is set to become a flash point in the coming decades in many parts of the world. An entirely new and comprehensive quantitative framework is needed to establish a holistic understanding of that competition, thereby enabling the development of effective mediation strategies. This paper presents a modeling study centered on the Murrumbidgee River basin (MRB). The MRB has witnessed a unique system dynamics over the last 100 years as a result of interactions between patterns of water management and climate driven hydrological variability. Data analysis has revealed a pendulum swing between agricultural development and restoration of environmental health and ecosystem services over different stages of basin-scale water resource development. A parsimonious, stylized, quasi-distributed coupled socio-hydrologic system model that simulates the two-way coupling between human and hydrological systems of the MRB is used to mimic and explain dominant features of the pendulum swing. The model consists of coupled nonlinear ordinary differential equations that describe the interaction between five state variables that govern the co-evolution: reservoir storage, irrigated area, human population, ecosystem health, and environmental awareness. The model simulations track the propagation of the external climatic and socio-economic drivers through this coupled, complex system to the emergence of the pendulum swing. The model results point to a competition between human "productive" and environmental "restorative" forces that underpin the pendulum swing. Both the forces are endogenous, i.e., generated by the system dynamics in response to external drivers and mediated by humans through technology change and environmental awareness, respectively. Sensitivity analysis carried out with the model further reveals that socio-hydrologic modeling can be used as a tool to explain or gain insight into observed co-evolutionary dynamics of diverse human–water coupled systems. This paper therefore contributes to the ultimate development of a generic modeling framework that can be applied to human–water coupled systems in different climatic and socio-economic settings.

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Fujioka, Toshiyuki. "The basin-wide denudation history in the Murrumbidgee River catchment: a combined approach using cosmogenic nuclides, U-series and luminescence dating." Quaternary International 279-280 (November 2012): 153. http://dx.doi.org/10.1016/j.quaint.2012.08.154.

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50

van Emmerik, T. H. M., Z. Li, M. Sivapalan, S. Pande, J. Kandasamy, H. H. G. Savenije, A. Chanan, and S. Vigneswaran. "Socio-hydrologic modeling to understand and mediate the competition for water between agriculture development and environmental health: Murrumbidgee River Basin, Australia." Hydrology and Earth System Sciences Discussions 11, no. 3 (March 24, 2014): 3387–435. http://dx.doi.org/10.5194/hessd-11-3387-2014.

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Abstract. Competition for water between humans and ecosystems is set to become a flash point in the coming decades in many parts of the world. An entirely new and comprehensive quantitative framework is needed to establish a holistic understanding of that competition, thereby enabling the development of effective mediation strategies. This paper presents a modeling study centered on the Murrumbidgee River Basin (MRB). The MRB has witnessed a unique system dynamics over the last 100 years as a result of interactions between patterns of water management and climate driven hydrological variability. Data analysis has revealed a pendulum swing between agricultural development and restoration of environmental health and ecosystem services over different stages of basin scale water resource development. A parsimonious, stylized, quasi-distributed coupled socio-hydrologic system model that simulates the two-way coupling between human and hydrological systems of the MRB is used to mimic dominant features of the pendulum swing. The model consists of coupled nonlinear ordinary differential equations that describe the interaction between five state variables that govern the co-evolution: reservoir storage, irrigated area, human population, ecosystem health, and a measure of environmental awareness. The model simulations track the propagation of the external climatic and socio-economic drivers through this coupled, complex system to the emergence of the pendulum swing. The model results point to a competition between human "productive" and environmental "restorative" forces that underpin the pendulum swing. Both the forces are endogenous, i.e., generated by the system dynamics in response to external drivers and mediated by humans through technology change and environmental awareness, respectively. We propose this as a generalizable modeling framework for coupled human hydrological systems that is potentially transferable to systems in different climatic and socio-economic settings.

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Journal articles on the topic 'Murrumbidgee River'

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