Rainfall salt accessions in the Queensland Murray - Darling Basin

Soil Research ◽  
2006 ◽  
Vol 44 (6) ◽  
pp. 637 ◽  
Author(s):  
A. J. W. Biggs

Two east–west transects were established in southern Queensland to quantify rainfall inputs of chloride and associated ions. Electrical conductivity, pH, and major and minor ions were measured at 9 sites within the Queensland Murray–Darling Basin and 1 site to the east. Variability at some sites was high, possibly a function of the sample collection method. Ionic concentrations decreased with distance inland, a trend similar to that observed elsewhere in Australia, although values closer to the coast were higher than observed in southern and western Australia. Equations to predict both annual average rainfall chloride mass deposition and total salt deposition were derived.

1974 ◽  
Vol 1 (1) ◽  
pp. 55 ◽  
Author(s):  
DA Saunders

The nomenclatural history of the two forms of white-tailed black cockatoo is discussed. Their correct names are Calyptorhynchus baudinii baudinii Lear for the long-billed form, and C. b. latirostris Carnaby for the short-billed form. C. b. latirostris differs from baudinii in having a slightly shorter wing and shorter culmen, there being virtually no overlap in the range of culmen lengths between adults of the two subspecies. The adult skull of baudinii is wider and higher, with a longer culmen, lower mandible and gonys than latirostris. C. b. baudinii is found in areas with an annual average rainfall of 750 mm or more, whereas lativostris occurs where it is 300–750 mm. C. b. baudinii appears to be resident throughout the year whereas latirostris moves to the higher-rainfall areas during the non-breeding season, returning to the drier areas during the breeding season. For food baudinii depends on the seeds of the marri, Eucalyptus calophylla, whereas latirostris depends on seeds from the small hard fruits of species of Hakea and Dryandra. A mechanism for the separation of the two forms during the breeding season is suggested.


2014 ◽  
Vol 36 (2) ◽  
pp. 229 ◽  
Author(s):  
Jeff Short ◽  
Andrew Hide

The brushtail possum (Trichosurus vulpecula) was reintroduced to the fox-free habitat of the Wadderin Sanctuary in the eastern wheatbelt of Western Australia in 2008. Subsequent monitoring through to 2013 has revealed a small but healthy extant population that occupies all suitable habitat with some animals moving beyond the predator-free sanctuary to adjoining woodland patches. Possums occurred at a low density and had large home ranges relative to other studies at more mesic sites elsewhere. This is likely linked to the low productivity of the site (annual average rainfall of 332 mm) and one-way dispersal of young across the barrier fence. Possums preferentially occupied woodlands of York gum and salmon gum, utilised rock she-oak habitat, but made little use of shrubland and mallee habitats within the sanctuary. Female possums appeared to mature at an early age and to have young for much of the year. Recruitment was biased towards males in the first four years of establishment; although many appeared to rapidly disappear from the population. The success of this reintroduction is most likely linked to the initial release of possums into vacant habitat, the absence of foxes, and the ready availability of hollows in mature eucalypts and shelter sites in rock crevices.


2003 ◽  
Vol 9 (1) ◽  
pp. 49
Author(s):  
Dean melvin

Two properties, "Paradise" and "Cloverdowns", are farmed by the Melvin family near Dowerin in the central wheatbelt of Western Australia (see Fig. 1, Hobbs 2003). The annual average rainfall is 350 mm and, before Europeans settled the area, it was well vegetated with perennial vegetation. The sandplain soils were dominated by mallees Eucalyptus spp., Kwongan or heath (predominantly Myrtaceae, Proteaceae and Leguminosae), and patches of York Gum E. loxophleba woodland. The heavier soils such as the brown sandy loams and red brown loams were clothed in woodland of Salmon Gum E. salmonophloia and York gum. The gravelly sands were covered by Tamma scrub which was dominated by sheoak Allocasuarina spp.


Water ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1708
Author(s):  
Yeon-Moon Choo ◽  
Sang-Bo Sim ◽  
Yeon-Woong Choe

The annual average rainfall in Busan area is increasing, causing frequent flooding of Busan’s Suyeong and Oncheon rivers. Due to the increase in urbanized areas and climate change, it is difficult to reduce flood damage. Therefore, new methods are needed to reduce urban inundation. This study models the effects of three flood reduction methods involving Oncheon River, Suyeong River, and the Hoedong Dam, which is situated on the Suyeong. Using EPA-SWMM, a virtual model of the dam and the rivers was created, then modified with changes to the dam’s height, the installation of a floodgate on the dam, and the creation of an underground waterway to carry excess flow from the Oncheon to the Hoedong Dam. The results of this study show that increasing the height of the dam by 3 m, 4 m, or 6 m led to a 27%, 37%, and 48% reduction in flooding, respectively, on the Suyeong River. It was also found that installing a floodgate of 10 × 4 m, 15 × 4 m, or 20 × 4 min the dam would result in a flood reduction of 2.7% and 2.9%, respectively. Furthermore, the construction of the underground waterway could lead to an expected 25% flood reduction in the Oncheon River. Measures such as these offer the potential to protect the lives and property of citizens in densely populated urban areas and develop sustainable cities and communities. Therefore, the modifications to the dam and the underground waterway proposed in this study are considered to be useful.


Lab on a Chip ◽  
2021 ◽  
Author(s):  
Dries Vloemans ◽  
Lorenz Van Hileghem ◽  
Wannes Verbist ◽  
Debby Thomas ◽  
Francesco Dal Dosso ◽  
...  

Dried blood spot (DBS) sampling by finger-pricking has recently gained a lot of interest as alternative sample collection method. The reduced invasiveness, requirement of lower sample volumes and suitability for...


2019 ◽  
Vol 57 (6) ◽  
pp. 3933-3951 ◽  
Author(s):  
Jiayi Li ◽  
Xin Huang ◽  
Ting Hu ◽  
Xiuping Jia ◽  
Jon Atli Benediktsson

2020 ◽  
Vol 30 (1) ◽  
pp. 226
Author(s):  
Ida Bagus Pramayoga ◽  
I Wayan Ramantha

Underlying this research are findings related to misuse and management of village funds in Gianyar District. This study aims to determine the effect of clarity of budget targets, competence of village officials, and leadership on accountability of village fund management in Gianyar District. The sample collection method used was a questionnaire and analyzed using Multiple Linear Regression analysis. Based on the results of the analysis conducted, it can be concluded that the clarity of the budget targets, the competence of the village apparatus, and leadership has a positive effect on the accountability of village fund management, which means that the clarity of the budget targets, the competence of the village apparatus, and the leadership of the related leaders are better. accountability of the management of village funds in the District of Gianyar.


2008 ◽  
Vol 26 (15_suppl) ◽  
pp. 22163-22163
Author(s):  
F. Kong ◽  
L. Wang ◽  
L. Zhao ◽  
Y. Chen ◽  
M. Anscher ◽  
...  

1980 ◽  
Vol 28 (6) ◽  
pp. 573 ◽  
Author(s):  
RJ Hnatiuk ◽  
AJM Hopkins

Observations of responses to aseasonal water stress are reported for 238 above-ground perennial species of native vascular plants in a 20 km2 area of Western Australia surveyed during the second consecutive year of below average rainfall. Eighty-six species (36%) were found with dead individuals. Both vegetative regeneration and seedling regeneration appeared to be successful means of surviving drought stress in this region. The drought affected species of the families Proteaceae and Epacridaceae more than those of other major families. There are similarities in the response of the vegetation to the two main, irregularly occurring phenomena, aseasonal drought and fire: both can affect vegetation over large areas and yet leave considerable patches within the area that are little affected. Together these two factors contribute to the production of complex and dynamic mosaic-patterns in the vegetation.


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