Chemical studies of four swamps on the northern tablelnds New South Wales

1980 ◽  
Vol 31 (6) ◽  
pp. 729 ◽  
Author(s):  
SV Briggs

Concentrations of calcium. magnesium, sodium, potassium. nitrate-nitrogen and phosphate-phosphorus, and conductivity, total alkalinity, pH and water level were measured monthly in four swamps on the northern tablelands of New South Wales. The order of cationic dominance in the wetlands was Na ≥ Mg > Ca > K One wetland had markedly higher ionic concentrations than the rest, possibly because of an urban area in its catchment. Rainfall, water level and the effects of season on nutrient uptake and release by aquatic vegetation accounted for much of the temporal variation in ionic concentrations and loadings in the wetlands. There was no obvious correlation between water chemistry of the wetlands and waterbird densities.

Author(s):  
A. Liversidge

Some specimens of this rare mineral have recently been kindly forwarded to me by Mr. J. R. McKay, Manager of the Broken Hill South Silver Mining Company, New South Wales, together with a report upon them by Mr. J. O. Armstrong of the above mine, and Mr. A. D. Carmichael of the Broken Hill Proprietary Block 10 mine, as follows :—“Mineral found at the Broken Hill South Mine, at the 300 feet level in the carbonate of lead stopes, below original water level.


1985 ◽  
Vol 36 (1) ◽  
pp. 59 ◽  
Author(s):  
SV Briggs ◽  
MT Maher ◽  
SM Carpenter

Water chemistry in two impermanent wetlands in inland south-westem New South Wales was studied as part of a larger investigation into the relationship between water level rises and waterfowl breeding in such wetlands. Ionic dominances, nutrient levels and relationships between nutrient or ion and wetland, season, water level and moisture regime are considered. Sodium, potassium, calcium and chloride concentrations, conductivity and pH were inversely related to water level. Total loads of iron, phosphate, nitrate and sulfate increased as the wetlands flooded during wetting phases. Nitrate and phosphate levels in experimental tanks also peaked after flooding. The effect of wetland drying and reflooding on nutrient availability is discussed.


Soil Research ◽  
1989 ◽  
Vol 27 (4) ◽  
pp. 607 ◽  
Author(s):  
GM Bowman

Calcareous sands (Fluvisols/Regosols) and Podzol soils of at least seven different ages (0, 2500, 3000, 5000, 5800, 6200 and 6500 calendar years) form a soil chronosequence in the prograded beach-ridge plain near Moruya Heads, on the south coast of New South Wales. Ages of the soils were determined by radiocarbon dating of marine shell deposited with the sediment. The soils range from undifferentiated quartz sand mixed with marine shell debris at the youngest site, to well developed podzols with pronounced AI, A2 and iron-humus B horizons at the oldest sites. Age trends are evident in a range of physical and chemical soil properties, the most significant of which are: an increase in the thickness of the A2 and B horizons with a concomitant decrease in C horizon thickness; a decrease in Munsell colour chroma in the A1 and A2 horizons and an increase in B horizon chroma; a fall in the pH of all horizons (particularly in the younger soils); an increase in depth to the leaching front of marine shell carbonate; the progressive leaching of HC1-extractable manganese, calcium, magnesium and sodium from the soil profiles; and the progressive development of the A2 and B horizons in terms of HC1-extractable iron and aluminium.


Data ◽  
2021 ◽  
Vol 6 (10) ◽  
pp. 101
Author(s):  
Cristina N. A. Viola ◽  
Danielle C. Verdon-Kidd ◽  
David J. Hanslow ◽  
Sam Maddox ◽  
Hannah E. Power

Continuous water level records are required to detect long-term trends and analyse the climatological mechanisms responsible for extreme events. This paper compiles nine ocean water level records from gauges located along the New South Wales (NSW) coast of Australia. These gauges represent the longest and most complete records of hourly—and in five cases 15-min—water level data for this region. The datasets were adjusted to the vertical Australian Height Datum (AHD) and had the rainfall-related peaks removed from the records. The Unified Tidal Analysis and Prediction (Utide) model was subsequently used to predict tides for datasets with at least 25 years of records to obtain the associated tidal residuals. Finally, we provide a series of examples of how this dataset can be used to analyse trends in tidal anomalies as well as extreme events and their causal processes.


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