Influence of pH on copper and zinc uptake by soil clays

Soil Research ◽  
1981 ◽  
Vol 19 (3) ◽  
pp. 217 ◽  
Author(s):  
M Maguire ◽  
J Slavek ◽  
I Vimpany ◽  
FR Higginson ◽  
WF Pickering
Keyword(s):  
New South ◽  
Ph Dependence ◽  
Soil Horizons ◽  
Copper And Zinc ◽  
South Wales ◽  
Soil Clays ◽  
Wide Range ◽  
Ph Dependent ◽  
Free Material ◽  
Influence Of Ph

Nine soil clays were isolated from a wide range of soil horizons in New South Wales, and after minerological characterization, the adsorptive behaviour of the NH4+ form of the organic-free material was examined. The amount of copper and zinc sorbed increased with pH and, prior to precipitation of hydroxy species material, differences in pH-dependent capacity were discernible, reflecting differences in clay composition. Uptake at a fixed pH (5) did not always vary with concentration in accordance with Langmuir isotherms. Calculated parameters for amenable systems were similar to those observed by other workers, but capacities at a fixed pH proved to be less informative than pH dependence curves. The implications of the data for availability of the metal ions in the environment have been considered.

An economic analysis of a 10 year rate of stocking trial with fine-wool

1978 ◽  
Vol 18 (92) ◽  
pp. 370 ◽  
Author(s):  
JM George ◽  
RA Pearse
Keyword(s):  
New South ◽  
Climatic Conditions ◽  
Stocking Rate ◽  
Labour Costs ◽  
South Wales ◽  
Wide Range ◽  
Wool Yield ◽  
Stocking Rates ◽  
Price Relationships ◽  
Clover Pasture

Merino ewes were grazed for 10 years at stocking rates of 8, 12 and 16 ha-1, lambing in winter, spring or summer on a phalaris/white clover pasture on the Northern Tablelands of New South Wales. Wool production, wool yield and count, and lambing and weaning rates were established for the wide range of climatic conditions experienced. A spring lambing is indicated under the within-year price relationships experienced. Under a wide range of wool and lamb prices the optimum stocking rate varied from 12 to 16 ewes ha-1 depending on labour costs.

The distribution of the greater broad-nose bat Scoteanax rueppellii (Microchiroptera: Vespertilionidae) in relation to climate and topography.

2006 ◽  
Vol 28 (1) ◽  
pp. 77
Author(s):  
P. D. Wilson
Keyword(s):  
New South ◽  
Species Distributions ◽  
Museum Collections ◽  
Southern Limit ◽  
Climate Matching ◽  
Matching Algorithm ◽  
South Wales ◽  
Eastern Australia ◽  
Wide Range ◽  
Occurrence Records

Concepts of the distribution of the greater broad-nose bat (Scoteanax rueppellii) have changed significantly as occurrence records have accumulated over the years. Early accounts of the species' distribution suggested that it was restricted to the heavily timbered areas of eastern Australia, and occurred over a wide range of altitudes. However, recent summaries of the distribution of the species differ significantly from these early accounts. To reconcile these discrepancies, I collated records from museum collections and wildlife databases. These data clearly indicate that stated altitudinal limits for the species are not correct. The currently known southern limit of the species is near Eden, New South Wales (NSW). The distribution of the species was modelled using the DOMAIN climate matching algorithm. The model indicates that S. rueppellii may occur in East Gippsland, Victoria, suggests its likely occurrence in inland Queensland and northern NSW, but a low likelihood of occurrence in inland southern NSW. However, the data show strong spatial and temporal biases that restrict the confidence that may be placed in the model. It is argued that species distributions must be regarded as open and evolving hypotheses.

The effect of sowing rate on the yield and composition of wheat grown on soils of high fertility in southern New South Wales

1963 ◽  
Vol 3 (9) ◽  
pp. 114 ◽  
Author(s):  
JD Colwell
Keyword(s):  
Field Experiments ◽  
New South ◽  
New South Wales ◽  
Maximum Yield ◽  
Moisture Stress ◽  
High Fertility ◽  
Seeding Rate ◽  
Fertilizer Response ◽  
South Wales ◽  
Wide Range

The effects of the different sowing rates of 20, 40, and 60 lb of seed an acre on the yield, bushel weight, composition, and response to fertilizers, of wheat grown on soils of high fertility has been studied in seven field experiments in the wheat-belt of southern New South Wales. Seasonal conditions ranged from drought to lush growing conditions and in addition one experiment was irrigated to reduce the effects of moisture stress on plant growth. Yields ranged from 10 to 70 bushels of wheat an acre and fertilizer treatments gave both positive and negative effects. For the wide range of growth conditions, variation in seeding rate had only small and non-significant effects on grain yields, with the exception of the irrigated experiment where a consistent trend indicated the need for higher seeding rates for maximum yield. Effects of the seeding rates on grain size and composition and fertilizer response, were negligible. Losses in potential grain yield, caused by the exhaustion of soil moisture reserves by excessive vegetative growth of high fertility soils before grain development has been completed, does not seem to be reduced appreciably by the use of low seeding rates.

Thermal relations of the malle fragon Amphibolurus fordi (Lacertilia : Agamidae)

1974 ◽  
Vol 22 (3) ◽  
pp. 319 ◽  
Author(s):  
HG Cogger
Keyword(s):  
Body Temperature ◽  
Field Study ◽  
New South ◽  
Close Association ◽  
The Body ◽  
Total Effect ◽  
Body Temperatures ◽  
South Wales ◽  
Wide Range ◽  
Thermal Relations

A field study of the thermal relationships of the small agamid lizard A. fordi has been carried out in two areas of mallee in central western New South Wales, where this lizard occurs only in close association with the grass Triodia scariosa. The body temperatures characteristic of various phases in this lizard's die1 cycle have been determined. The behavioural techniques employed to regulate temperature are described; they are similar to those used by a wide range of diurnal heliothermic lizards in other regions. The total effect of these thermoregulatory responses is to maintain an internal thermal environ- ment approaching homoiothermy while the lizard is active. For A. fordi the eccritic body temperature determined from animals in the field is 36.9+-0.16C. Lowering of activity thermal levels occurs in winter, and can be induced at any time by even mild starvation.

Some investigations into soil and vegetation relationships associated with alkaline-saline soil surfaces in the Walcha area, Northern Tablelands, New South Wales

1995 ◽  
Vol 46 (1) ◽  
pp. 209 ◽  
Author(s):  
KH Kreeb ◽  
RDB Whalley ◽  
JL Charley
Keyword(s):  
Cynodon Dactylon ◽  
New South ◽  
New South Wales ◽  
Soil Surface ◽  
Tree Planting ◽  
Soil Parameters ◽  
Alkali Cations ◽  
Grazing Land ◽  
South Wales ◽  
Wide Range

The characteristics of the soil, vegetation and groundwater at a dryland salinity site on Miramoona, a property near Walcha on the Northern Tablelands of New South Wales, were investigated. Soil parameters measured at 23 points along a 200 m transect were highly correlated with the pattern of vegetation. Of overriding significance was soil pH, which varied from a high of over 10 on bare areas delineated by Critesion marinum and Cynodon dactylon to a low of less than 5 on grazing land supporting the growth of a wide range of pasture species. The bare areas were characterized by alkalinity. While they were sodic at all depths measured, they were only marginally saline and then only at the soil surface. The chemical composition of the groundwater collected from three piezometer tubes varied quite markedly over the site. It is hypothesized that the presence of alkaline bare areas on the Northern Tablelands is not a new problem, but rather the natural result of alternating wet and dry periods which have induced accumulation of carbonates and bicarbonates of the alkali cations, notably sodium. Drainage of the original perched swamps by the early landholders, tree clearing and the grazing of domestic livestock would have accelerated the process since European settlement. However, tree planting would appear unlikely to have any impact on the reclamation process in the short term. A more viable option would be the recreation of the original swamps in suitable situations, although this solution would create problems for grazing management.

Distribution of Nocturnal Forest Birds and Mammals in North-Eastern New South Wales: Relationships With Environmental Variables and Management History.

1995 ◽  
Vol 22 (3) ◽  
pp. 359 ◽  
Author(s):  
RP Kavanagh ◽  
S Debus ◽  
T Tweedie ◽  
R Webster
Keyword(s):  
New South ◽  
New South Wales ◽  
Forest Birds ◽  
Dry Forest ◽  
Forest Types ◽  
Regional Survey ◽  
Similar Frequency ◽  
South Wales ◽  
Wide Range ◽  
North Eastern

A regional survey of the forests in north-eastern New South Wales recorded eight species of nocturnal forest birds and nine species of arboreal marsupials from 291 sites. Three major environmental gradients accounting for the distribution of these species in north-eastern New South Wales were identified: elevation, forest type (wet forest types having a dense mesic understorey or dry forest types having an open or sparse understorey), and logging intensity. Characteristic assemblages of species were associated with each end of these three gradients. A core group of species occurred across a wide range of environmental conditions, including logged and unlogged forest. Most species occurred with similar frequency in logged and unlogged forest. Implications for forest management are discussed.

scholarly journals Animals of Arid Australia: out on their own?

2009 ◽  
Vol 15 (1) ◽  
pp. 76
Author(s):  
Hannah Nicholas
Keyword(s):  
Land Use ◽  
Plenary Session ◽  
Arid Zone ◽  
New South ◽  
New South Wales ◽  
South Wales ◽  
Wide Range

Comprising the proceedings and plenary session of the forum ?Animals of arid Australia: out on their own?? held in Mosman, New South Wales in 2004, this publication consists of 17 papers that bring together a range of themes on the fauna and land use of Australia?s arid zone. The authors encompass various disciplines and backgrounds, and a wide range of skills.

Geoarchaeology of Aboriginal Landscapes in Semi-arid Australia

2014 ◽  
Author(s):  
Simon Holdaway ◽  
Patricia Fanning
Keyword(s):  
Aboriginal People ◽  
Arid Zone ◽  
New South ◽  
New South Wales ◽  
Research Station ◽  
Spatial And Temporal Scales ◽  
The Past ◽  
South Wales ◽  
Wide Range ◽  
Arid Zone Research

This book provides readers with a unique understanding of the ways in which Aboriginal people interacted with their environment in the past at one particular location in western New South Wales. It also provides a statement showing how geoarchaeology should be conducted in a wide range of locations throughout Australia. One of the key difficulties faced by all those interested in the interaction between humans and their environment in the past is the complex array of processes acting over different spatial and temporal scales. The authors take account of this complexity by integrating three key areas of study – geomorphology, geochronology and archaeology – applied at a landscape scale, with the intention of understanding the record of how Australian Aboriginal people interacted with the environment through time and across space. This analysis is based on the results of archaeological research conducted at the University of New South Wales Fowlers Gap Arid Zone Research Station between 1999 and 2002 as part of the Western New South Wales Archaeology Program. The interdisciplinary geoarchaeological program was targeted at expanding the potential offered by archaeological deposits in western New South Wales, Australia. The book contains six chapters: the first two introduce the study area, then three data analysis chapters deal in turn with the geomorphology, geochronology and archaeology of Fowlers Gap Station. A final chapter considers the results in relation to the history of Aboriginal occupation of Fowlers Gap Station, as well as the insights they provide into Aboriginal ways of life more generally. Analyses are well illustrated through the tabulation of results and the use of figures created through Geographic Information System software. Winner of the 2015 Australian Archaeology Association John Mulvaney Book Award

Variation in Australian and European collections of Trifolium glomeratum L. and the provisional distribution of the species in southern Australia

1974 ◽  
Vol 25 (1) ◽  
pp. 73 ◽  
Author(s):  
RG Woodward ◽  
FHW Morley
Keyword(s):  
Dry Matter ◽  
New South ◽  
South Australia ◽  
Growing Season ◽  
Strongly Correlated ◽  
Collection Site ◽  
South Wales ◽  
Matter Production ◽  
Wide Range ◽  
Flower Growth

Seventy-four lines of Trifolium glomeratum L. from a wide range of Australian and European environments were grown in a glasshouse at Canberra. Time to flower, growth habit, leaf markings, stipule colour, floret colour and dry matter production varied among collections, and within some lines. Numbers of flowers per plant, leaf: stem ratio, and dry matter yields were correlated with days to flower. The variation within the European collection was similar to that within the Australian collection. Time of flowering has probably been important in natural selection in this species, since the date of flowering at Canberra was strongly correlated with date of the end of the growing season (defined by effective rainfall) at the collection site of each ecotype. A survey during 1970 through New South Wales, Victoria and South Australia showed the western limit of spread of T. glomeratum to be through Garah, Burren Junction, Coonamble, Euabalong,Booligal, Moulamein, Beulah, Lake Hindmarsh, Mannum and Jamestown. Extrapolation of climatic restrictions to Western Australia indicated that the species could exist west of Lake Biddy, and possibly north and east to Geraldton and Esperance. The distribution appears to be controlled by the shortest length of growing season in which the species can germinate, grow, and set viable seed.

Variation in Eucalyptus nitens Maiden in Response to Temperature and Seed Source

1976 ◽  
Vol 24 (2) ◽  
pp. 167 ◽  
Author(s):  
KR Shepherd ◽  
JCG Banks ◽  
WJ Atyeo
Keyword(s):  
New South ◽  
Leaf Shape ◽  
Growth Potential ◽  
Uniform Temperature ◽  
South Wales ◽  
Temperature Regimes ◽  
Eastern Australia ◽  
Wide Range ◽  
A Minor ◽  
Response To Temperature

E. nitens is a minor species of south-eastern Australia, having the growth potential for afforestation purposes. Variation was studied in seedlings raised under a wide range of temperature regimes with seed from six representative provenances. The results suggest that the species can be readily divided into three broad groupings, the two northern outlier occurrences of Ebor and Barrington, those in southern New South Wales, and the most southerly occurrences in Victoria. Leaf shape was found to be the best discriminatory character as it was independent of temperature. The provenances could also be distinguished on the basis of leaf area, but only when plants were raised under uniform temperature conditions.

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