The pedogenesis of desert loam soils in the Barrier Range, western New South Wales. I. Soil parent materials

Soil Research ◽  
1982 ◽  
Vol 20 (4) ◽  
pp. 269 ◽  
Author(s):  
C.J. Chartres
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Saline Lake ◽  
New South ◽  
Morphological Properties ◽  
Parent Materials ◽  
Rock Types ◽  
Aeolian Deposits ◽  
South Wales ◽  
Mineral Assemblages

The particle-size distribution, silt (63-20 �m) mineralogy and micro-morphological properties of three desert loam soils developed over contrasting rock types are examined. The silt mineral assemblages in the soils contain more weatherable minerals and are more varied than those of the underlying rocks. Round to subround clayey pellets constitute the majority of the soil materials. Such pellets are probably aeolian in origin and are similar to clayey pellets originating in dried-out, saline lake beds elsewhere in southern Australia. The combination of aeolian silts and clays in the desert loam soils indicate that the soil parent materials are primarily transported aeolian deposits.

Characteristics of soil and productivity of Pinus radiata (D Don) in New South Wales .II. Pedogenesis on a range of parent materials

Soil Research ◽  
1986 ◽  
Vol 24 (1) ◽  
pp. 103 ◽  
Author(s):  
PJ Ryan
Keyword(s):  
Pinus Radiata ◽  
Soil Depth ◽  
New South ◽  
New South Wales ◽  
Morphological Properties ◽  
Slope Position ◽  
Site Classification ◽  
Physical Factors ◽  
Parent Materials ◽  
South Wales

Soil profile descriptions were made at a series of 11-year-old unfertilized Pinus radiata stands in the Lithgow district of New South Wales. Catenas within three soil parent materials were selected to compare variation in soil physical and morphological properties with growth of P. radiata. These parent materials were a Silurian siltstone, a Permian conglomerate and a Silurian-Devonian rhyolite. Basal area growth of the P. radiata stands increased down catenas on the Silurian siltstone as soil depth to a root impeding layer increased. Plateau soils on the Permian conglomerate had hardsetting surfaces and high gravel contents, and were associated with very poor pine growth. By way of contrast, lower slope, colluvial gradational earths were deep, fine-textured soils and supported more productive pine stands. The Silurian-Devonian rhyolite parent material produced highly leached soils, commonly with conspicuously bleached A2 horizons and poor sandy textures of surface soil. Both physical and chemical features of the rhyolite interacted with pedological processes to affect adversely soil physical conditions and trace element availability, in particular boron. The poorer P. radiata growth on lower or concave slope in comparison with upper slope position was a result of increased soil leaching and horizon differentiation. This pattern contrasted with improved pine growth on the deeper soils on lower slopes on the two sedimentary parent materials. These case studies emphasize the importance of geology and pedological processes when evaluating the applicability of specific soil physical factors to site classification for P. radiata plantations.

scholarly journals Blend of natural waxes as a matrix for aroma encapsulation

2017 ◽  
Vol 15 (2) ◽  
pp. 103-111
Author(s):  
Jelena Milanovic ◽  
Gordana Ilic-Sevic ◽  
Marijana Gavrilovic ◽  
Milutin Milosavljevic ◽  
Branko Bugarski
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Elevated Temperatures ◽  
Thermal Characteristics ◽  
Feed Additives ◽  
Morphological Properties ◽  
Particle Size Range ◽  
Carnauba Wax ◽  
Potential Applications

In this study, the possibility of using a blend of natural waxes (bees and carnauba) for encapsulation of some aroma compounds was investigated. Melt dispersion/melt solidification technique was applied for microbeads production. Since one of the most important characteristics of the particles are the size and shape, particle size distribution as well as morphological properties are tested. Thermal characteristics are also examined as significant properties for thermal behavior at elevated temperatures, important for application of encapsulated particles in food production processes. Different contents of the carnauba wax in the mixture with beeswax are investigated, from 10% to 50% (w/w). Since one of the potential applications of the encapsulated aroma is in feed additives production, the targeted particle size range was under 300 ?m to be suitable for handling and mixing with other powder substances. According to the obtained results, a higher carnauba wax content in the wax blend had an impact on particle size distribution. Also, it had an impact on the surface morphology and thermal properties. The obtained results may contribute to the development of methods of encapsulation of hydrophobic aromas in the natural wax matrix.

Variation in Morphological Properties and Particle Size Distribution of Alfisols, Inceptisols and Entisols in the Gubi Soil Series, Bauchi, Nigeria

2006 ◽  
Vol 6 (13) ◽  
pp. 2821-2824 ◽  
Author(s):  
N. Voncir . ◽  
T. Kparmwang . ◽  
A.A. Amba . ◽  
A.M. Hassan .
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Morphological Properties ◽  
Soil Series

Cladonema timmsii, a new species of hydromedusa (Cnidaria : Hydrozoa) from a salt lake in South Australia

Zootaxa ◽  
2008 ◽  
Vol 1826 (1) ◽  
pp. 59 ◽  
Author(s):  
LISA-ANN GERSHWIN ◽  
WOLFGANG ZEIDLER
Keyword(s):  
New Species ◽  
Saline Lake ◽  
Salt Lake ◽  
New South ◽  
South Australia ◽  
Northern Territory ◽  
Stomach Wall ◽  
Sexually Dimorphic ◽  
South Wales ◽  
A New Species

Cladonema timmsii, sp. nov., is described from Blue Lagoon, an inland saline lake on Eyre Peninsula, near Cactus Beach, due south of Penong, Australia. It is a small medusa with a bell height and diameter of about 2.0mm. It differs from its congeners in having (1) sexually dimorphic gonads, i.e., the males bearing six radially arranged gonadal pouches on the stomach wall, the females lacking gonadal pouches, having instead smooth gonads; (2) different arrangements of nematocyst warts on the main tentacle branches (two rows) and side branches (one row). It is further characterized by having (1) nine simple radial canals, each corresponding with a tentacle bulb bearing a 7-branched stinging tentacle and about six suctorial branches; (2) six oral tentacles with very short stalks, each bearing a terminal nematocyst knob; (3) dark red, lensed ocelli. This is the first report of a species of Cladonema from Australian waters; members of the genus are also reported herein from the Northern Territory and New South Wales.

Surface structure in gray clays of northwestern New South Wales in relation to micromorphology, cation suite and particle size attributes

Soil Research ◽  
1992 ◽  
Vol 30 (1) ◽  
pp. 1 ◽  
Author(s):  
IP Little ◽  
AJ Ringrose-Voase ◽  
WT Ward
Keyword(s):  
Particle Size ◽  
Surface Structure ◽  
New South ◽  
Clay Mineralogy ◽  
Clay Content ◽  
Structural Behaviour ◽  
South Wales ◽  
Field Assessment ◽  
Structured Soils ◽  
Textural Attributes

Considerable differences in surface structure (0-100 mm) were observed in the field in two adjacent areas of grey clays near Narrabri, N.S.W. The absence of any differences in clay mineralogy and granulometry of the sand fraction supported the field assessment that both types of soil were similar in provenance. A transect of soil profiles including seven with poor structure and five with well-structured surface horizons was examined. The field observations of structure were supported by photographs of the surface, and water entry after rain. Micromorphological examination showed that closely spaced porphyric to adporphyric fabric in the poorly structured soils contributed to poor structure, highlighting the importance of textural attributes. The well-structured soils had a more widely spaced porphyric fabric. A measure of dispersibility depending on clay content and exchangeable plus soluble Na, Ca and Mg tallied very well with the field assessment of soil structure. Five groups were obtained from a euclidean distance/flexible sort strategy on the basis of cation suite, carbon content and particle size attributes. The groups identified areas of poor structure very well and the groups appear to be discriminated mainly on the basis of differences in Na, Ca and clay content. Treating the transect as a continuum of soils of very poor structure at site 1 grading to very good at site 12 showed that greater values for Ca, K, and clay were associated with good structure and greater values for Mg, C and silt were associated with poor structure. The sodium adsorption ratio and ionic strength of the soil solution were not on their own good predictors of structural behaviour possibly due to the independent contribution of Ca and Mg in this respect.

The relation between herbage copper, EDTA-extractable soil copper and species composition in pastures growing on a range of soil types

1977 ◽  
Vol 28 (6) ◽  
pp. 981 ◽  
Author(s):  
F Beavington ◽  
WA Wright
Keyword(s):  
Species Composition ◽  
New South ◽  
Acid Soils ◽  
Soil Types ◽  
Parent Materials ◽  
Copper Status ◽  
South Wales ◽  
Supporting Soil ◽  
Low Levels ◽  
Extractable Soil

A survey of the copper status of herbage and its supporting soil over various soil parent materials (all with acid soils) on part of the coast of New South Wales showed levels of herbage copper ranging from < 1 to 14 ppm, EDTA-extractable soil copper from 0.2 to 32 ppm and a correlation between these two variables of r = 0.51 (P < 0,001). Very low levels of herbage copper were associated with high proportions of inferior grasses and both were associated with low 'available' soil copper. High levels of herbage copper were associated with high proportions of clover though not necessarily with the highest levels of 'available' soil copper. The content of molybdenum in herbage varied widely giving many very low copper/molybdenum ratios.

Zeolite Facies and Regional Rank of Bituminous Coals

1966 ◽  
Vol 103 (5) ◽  
pp. 414-422 ◽  
Author(s):  
Hanan J. Kisch
Keyword(s):  
Carbon Content ◽  
New South ◽  
Geothermal Gradient ◽  
Stability Range ◽  
Upper Carboniferous ◽  
South Wales ◽  
Partial Pressures ◽  
Mineral Assemblages ◽  
Higher Rank ◽  
Depth Of Burial

AbstractDiagnostic analcime-, heulandite-, and laumontite-bearing mineral assemblages from four areas in the Upper Carboniferous and the Permian of New South Wales have been correlated with the rank of the associated coals, represented by the carbon content of vitrinite. The coals are high-volatile bituminous to semi-anthracitic; their vitrinites contain from about 82 per cent up to an estimated 91 per cent carbon. Analcime-quartz is found associated with the lower-rank, the laumontite-rich assemblages with the higher-rank coals. Comparison with a similar correlation in Northern Yakutia (U.S.S.R.) indicates that diagnostic zeolites are not necessarily associated with coals of the same range of rank in different areas. Unlike the occurrence and stability range of burial metamorphic zeolitic assemblages, degree of coalification is probably independent of partial pressures of H2O and CO2: it is controlled mainly by maximum depth of burial, its duration, and the geothermal gradient.

Body lengths and maximum gut food-particle sizes of the dominant cladocerans and calanoid copepods in Wallerawang Reservoir, New South Wales

1991 ◽  
Vol 42 (4) ◽  
pp. 399 ◽  
Author(s):  
T Kobayashi
Keyword(s):  
Particle Size ◽  
Competitive Ability ◽  
New South ◽  
Particle Sizes ◽  
Calanoid Copepods ◽  
Food Particle ◽  
South Wales ◽  
Cladoceran Species ◽  
Body Sizes ◽  
Food Particles

Body length influences the maximum gut food-particle size of the dominant cladocerans and calanoid copepods in Wallerawang Reservoir. For the Wallerawang cladocerans, a linear regression equation, similar to the Northern Hemisphere equivalent, relates food-particle and body sizes. The larger cladoceran species ingest larger food particles than do the smaller species they displace, thus seemingly supporting the size-efficiency hypothesis. On the other hand, the competitive ability of the Wallerawang calanoid copepods cannot be explained simply by the observed differences in the upper food-particle size limit of these species.

Sign in / Sign up

Export Citation Format

Share Document