The development of Early Permian sequences and hydrothermal alteration in the Myall Syncline, central eastern New South Wales

1992 ◽  
Vol 39 (2) ◽  
pp. 223-237 ◽  
Author(s):  
R. B. Jenkins ◽  
J. E. Nethery
Keyword(s):  
Hydrothermal Alteration ◽  
New South ◽  
New South Wales ◽  
Early Permian ◽  
South Wales ◽  
Central Eastern

Feeding ecology and population dynamics of the feral cat (Felis catus) in relation to the availability of prey in central-eastern New South Wales

1999 ◽  
Vol 26 (5) ◽  
pp. 593 ◽  
Author(s):  
Robyn Molsher ◽  
Alan Newsome ◽  
Chris Dickman
Keyword(s):  
Oryctolagus Cuniculus ◽  
Prey Species ◽  
New South ◽  
New South Wales ◽  
Felis Catus ◽  
House Mice ◽  
Minor Components ◽  
Feral Cat ◽  
South Wales ◽  
Central Eastern

The diet of feral cats (Felis catus) was studied at Lake Burrendong, central-eastern New South Wales, from July 1994 to June 1997. Mammals were the major prey in 499 scats that were analysed. Rabbits (Oryctolagus cuniculus) were the staple prey, while carrion was an important secondary food. Invertebrates, other mammalian prey, vegetation, birds and reptiles were generally minor components of the diet. Few significant seasonal differences in diet were found; however, invertebrates contributed less and possums more to the diet in winter and summer respectively. A significant dietary response was found to changes in rabbit abundance, but not for the other prey types. Cats continued to prey heavily on rabbits even after a 90% decline in rabbit abundance occurred, which coincided with the advent of Rabbit Calicivirus Disease (RCD). House mice (Mus domesticus) increased in importance in the diet ten months post-RCD. Although the abundance of cats was correlated with the abundance of some prey species, other factors may have influenced the observed patterns; these are discussed.

An Aerial Survey of 3 Game Species of Waterfowl (Family Anatidae) Populations in Eastern Australia

1986 ◽  
Vol 13 (2) ◽  
pp. 213 ◽  
Author(s):  
LW Braithwaite ◽  
M Maher ◽  
SV Briggs ◽  
BS Parker
Keyword(s):  
Surface Waters ◽  
New South ◽  
New South Wales ◽  
Aerial Survey ◽  
Game Species ◽  
South Wales ◽  
Black Duck ◽  
The Pacific ◽  
Eastern Australia ◽  
Central Eastern

Populations of waterfowl of three game species, the Pacific black duck Anus superciliosa, grey teal A. gibberifrons, and maned duck Chenonetta jubata, were assessed by aerial survey in October 1983 within a survey region of 2 697 000 km2 of eastern Australia. The numbers of each species were assessed on all surface waters of over 1 ha, and on a sample of smaller surface waters within 10 survey bands each 30 km wide and spaced at intervals of 2� latitude from 20�30' to 38�30'S. The area within the survey bands was 324 120 km2, which gave a sampling intensity of 12.0% of the land surface area. The area of features shown as wetlands or water impoundments within the survey bands on 1 : 2 500 000 topographic maps was 19 200 km2 or 11.2% of the total area of these features in the survey region. The area of surface waters surveyed was assessed at 465 300 ha. Assessments of populations of each species were tallied for wetlands by grid cells of 6 min of 1� longitude along the survey bands (258-309 km2 depending on latitude). Distributions were then mapped, with log*10 indices of populations in each cell. Distributions of the black duck and grey teal showed a pattern of intense aggregation in limited numbers of cells, that of the maned duck was more evenly distributed. The major concentrations of the Pacific black duck were recorded in northern New South Wales and the south-eastern, western, central eastern and central coastal regions of Queensland; those of the grey teal were in south-western, western and northern New South Wales and central-eastern Queensland; the maned duck was broadly distributed over inland New South Wales with the exception of the far west, inland southern Queensland, and central northern Victoria.

Temperature-Regulated Changes in the Ovaries of Overwintering Females of the Queensland Fruit Fly, Dacus Tryoni.

1975 ◽  
Vol 23 (1) ◽  
pp. 91 ◽  
Author(s):  
BS Fletcher
Keyword(s):  
Ovarian Development ◽  
New South ◽  
New South Wales ◽  
Fruit Fly ◽  
Ovarian Maturation ◽  
Developmental Threshold ◽  
South Wales ◽  
The Mean ◽  
Central Eastern

Changes in the ovaries of overwintering D. tryoni females at two localities in central eastern New South Wales were studied during 1969 and 1970. In the ovaries of females from both locations, new follicles were differentiated throughout the winter months but most of them were later resorbed. By the end of the winter most females had at least two and some as many as four resorbed follicles per ovariole. The most advanced follicle in the ovariole was resorbed first, except in ovarioles where mature eggs were present, when the penultimate follicle was the first to be resorbed. In a high proportion of the mated parous females the sperm disappeared from the spermathecae when all the viable mature eggs had been laid. Comparison between the changes in the median stages of ovarian development and the tempera- ture data for the same period indicated that it was the mean number of day-degrees above the developmental threshold (13.5�C) experienced by the females which determined whether the ovaries continued to mature or not. Ovarian maturation continued while the mean number of day-degrees stayed above 1.6 and resorption occurred when it dropped below this. However, when the mean number of day-degrees dropped much below unity the ovaries showed very little change either way. The possible causes of ovarian resorption during the winter months and its possible significance for the survival of the flies is discussed.

Al-rich diopside in alluvial ruby and corundum-bearing xenoliths, Australian and SE Asian basalt fields

2003 ◽  
Vol 67 (4) ◽  
pp. 717-732 ◽  
Author(s):  
F. L. Sutherland ◽  
R. R. Coenraads ◽  
D. Schwarz ◽  
L. R. Raynor ◽  
B. J. Barron ◽  
...  
Keyword(s):  
New South ◽  
New South Wales ◽  
River System ◽  
Mineral Inclusions ◽  
South Wales ◽  
Garnet Granulite ◽  
Central Eastern

AbstractAlluvial rubies and sapphires are found in palaeodrainage deposits along the Cudgegong-Macquarie River system, central eastern New South Wales, Australia. A pink to red suite contains Cr (up to 0.6 wt.% Cr2O3) as the main chromophore, exceeding Fe (up to 0.5 wt.%Fe2O3). Corrosive etching suggests a prior xenocrystic Mesozoic-Cenozoic basaltic transport, while Cr2O3/Ga2O3to Fe2O3/TiO2ratios indicate an original metamorphic source. Syngenetic mineral inclusions include Al-rich diopside, meionite and anatase. The Al-rich diopside (‘fassaite’) contains extremely high Al2O3(20–21 wt.%). A blue-green suite contains Fe (up to 0.8 wt.% Fe2O3) as a dominant chromophore, while a rare nepheline-anorthoclase composite inclusion supports a magmatic phonolitic origin. The Cudgegong- Macquarie ruby formation is compared with a garnet granulite origin proposed for Thailand rubies and a xenolith of corundum-bearing garnet granulite from Ruby Hill, Bingara, Australia. Clinopyroxenecorundum thermometry suggests the Cudgegong-Macquarie rubies formed atT>1000–1300ºC, a high equilibrationTfor proposed lithospheric granulites. These rubies form a distinctive suite compared to other rubies from Australian and SE Asian basalt fields, but have some similarities with eastern Thailand rubies.

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