Use of sap trees by the yellow-bellied glider in the Shoalhaven region of New South Wales

2000 ◽  
Vol 27 (2) ◽  
pp. 217 ◽  
Author(s):  
Ross L. Goldingay
Keyword(s):  
New South ◽  
New South Wales ◽  
South Wales ◽  
Sap Feeding ◽  
Petaurus Australis ◽  
Management And Conservation ◽  
Very High

This study examined the use of sap trees by yellow-bellied gliders (Petaurus australis) at 33 sites scattered through approximately 10 000 ha of forest. In all, 62 grey gum (Eucalyptus punctata) trees were assessed during seven visits over a 2-year period for use by gliders in sap feeding (either currently or during the previous month). About 40% of trees had been used prior to each visit, indicating a very high pattern of use. About 29% of trees were used prior to many visits while 18% were not used at all. Gliders made small incisions on trees, apparently to test their suitability for sap feeding. These test incisions were seen several times on all the sap trees that remained unused during this study. They were made on about 60% of trees that were not used for sap feeding within the month prior to a visit. At 23 of the 33 sites, test incisions were also observed on E. punctata non-sap trees. These observations show that gliders actively check sap trees and non-sap trees. This study confirms the importance of sap trees to the yellow-bellied glider and highlights the need for further research that aims to identify the key parameters of these trees to which gliders respond. This would greatly facilitate the management and conservation of the yellow-bellied glider.

Seat Belts-Some Aspects of Compulsory Wearing in New South Wales, Australia

1977 ◽  
Vol 191 (1) ◽  
pp. 31-38 ◽  
Author(s):  
R. G. Vaughan
Keyword(s):  
New South ◽  
Seat Belt ◽  
New South Wales ◽  
Seat Belts ◽  
South Wales ◽  
Australian State ◽  
Tentative Evidence ◽  
The Law ◽  
Serious Injuries ◽  
Very High

The effects of compulsory seat belt wearing have been evaluated for the most populous Australian State — New South Wales. Wearing rates are now very high and although surveys have shown increasing acceptance of the safety value of belts, a sizable minority of motorists apparently only wear their belts because of the law. Compulsory belt wearing appears to have saved a substantial number of vehicle occupant lives, with the main saving being among young adults. Urban deaths appear to have been affected more than rural deaths. There is tentative evidence of reductions in serious injuries among occupants. A side effect of the law has been increased usage of restraining systems for young children.

Novel field observations of eucalypt sap feeding behaviour in the Eastern Pygmy-possum Cercartetus nanus

2019 ◽  
Vol 40 (2) ◽  
pp. 251-255
Author(s):  
Renae Hockey ◽  
Lachlan Wilmott ◽  
Lachlan Hall ◽  
George Madani
Keyword(s):  
Feeding Behaviour ◽  
New South ◽  
New South Wales ◽  
Field Observations ◽  
South Eastern ◽  
South Wales ◽  
The Family ◽  
Tree Sap ◽  
Sap Feeding ◽  
Cercartetus Nanus

The Eastern Pygmy-possum Cercartetus nanu s is a small arboreal marsupial in the family Burramyidae that is threatened in parts of its range. Considered a generalist omnivore, its diet is known to include invertebrates, seeds, nectar and pollen. Tree sap has never before been recorded as a part of the diet of C. nanus . Here, we report on two observations of C. nanus feeding on eucalypt sap in south-eastern New South Wales.

Hornblendes from some basic hornfelses in the New England region, New South Wales

1965 ◽  
Vol 34 (268) ◽  
pp. 52-65 ◽  
Author(s):  
R. A. Binns
Keyword(s):  
New England ◽  
Ferrous Iron ◽  
New South ◽  
New South Wales ◽  
Progressive Increase ◽  
Contact Metamorphism ◽  
South Wales ◽  
Bluish Green ◽  
Very High

SummaryWith progressive increase in grade of contact metamorphism, aluminous hornblendes in some New England basic hornfelses change from a pale blue-green variety with ragged actinolitic habit, to a deeper bluish-green variety, then to a deeply coloured brownish type with granular habit. At all stages the coexisting plagioclase is appreciably calcic. No outer aureole of albite-epidote-actinolite hornfels has been recognized. The higher grade hornblendes are richer in alkalis and titanium, and poorer in octahedrally co-ordinated aluminium than those formed at low grades. Two analysed hornblendes display an unusual excess of calcium, which occupies the Y site, and another has a very high content of ferrous iron and potassium.

A Symposium on the Dingo. Edited by Chris Dickman and Daniel Lunney. A Review by Peter Thomson.

2001 ◽  
Vol 23 (2) ◽  
pp. 189
Author(s):  
P Thomson
Keyword(s):  
Threatened Species ◽  
Canis Lupus ◽  
New South ◽  
New South Wales ◽  
Species Conservation ◽  
Vulnerable Species ◽  
South Wales ◽  
Legislative Changes ◽  
Management And Conservation

A symposium on the dingo (Canis lupus dingo) was held in Sydney in May 1999 to discuss issues surrounding the conflicting views of the dingo: seen both as a potentially threatened species, and as a species that needs to be controlled because of its predation on livestock. The Symposium was particularly relevant to New South Wales (NSW) because of consideration being given to place the dingo on the schedule of NSW vulnerable species, under the NSW Threatened Species Conservation Act 1995. The potential for conflict was exacerbated by concurrent legislative changes in NSW (Rural Lands Protection Act 1998) requiring the Crown to control pest animals declared under the Act. Despite the obvious focus on the NSW situation, many of the issues discussed have wider relevance to the management and conservation of dingoes across Australia.

Temperate rice technology for the 21st century: an Australian example

1994 ◽  
Vol 34 (7) ◽  
pp. 877 ◽  
Author(s):  
DJ McDonald
Keyword(s):  
21St Century ◽  
New South ◽  
New South Wales ◽  
Environmental Stability ◽  
Export Demand ◽  
Potential Yield ◽  
Yield Increase ◽  
South Wales ◽  
High Yields ◽  
Very High

Performance of the New South Wales rice industry is examined in the context of global rice production and demand into the 21st century. The need to double global production of rice by 2030 without major expansion of area will ensure strong export demand from temperate rice growing areas including southern New South Wales. Factors leading to the very high yields now achieved are discussed and the potential for further increasing average yields that are already the highest in the world is explored in terms of maintaining gains already made, raising the yield ceiling closer to the environmental limit, and reducing the gap between potential yield and those achieved by producers. Details are provided of the release and utilisation of varieties from the breeding program, and significant barriers to further yield increase are identified. The importance of 'Ricecheck' (a simple decision support system for farmers) is discussed. Problems of tailoring crop and land use practices to obtain environmental stability while at the same time substantially increasing productivity are highlighted.

Barium-felspars from Broken Hill, New South Wales (With Plate XIV.)

1946 ◽  
Vol 27 (192) ◽  
pp. 166-174 ◽  
Author(s):  
E. R. Segnit
Keyword(s):  
Shear Zone ◽  
New South ◽  
New South Wales ◽  
New Variety ◽  
Silicate Minerals ◽  
Rock Types ◽  
Broken Hill ◽  
South Wales ◽  
Mineralogical Investigation ◽  
Very High

At two localities on the outskirts of the township of Broken Hill—near the De Bavay shear zone, and at ‘The Piggery’—W. R. Browne reported unusual rock types rich in barium. His statement is accompanied by an analysis by H. P. White (analyst to the Mines Dept.) of one of these rocks, which contains 9·23% BaO. Subsequently S. R. Nockolds and E. G. Zies examined the felspars of the rock analysed by White with a view to ascertaining whether they are barium-containing varieties.In view of the very high barium content of some of the occurrences now being investigated, much higher than that of the rock examined by Nockolds and Zies, a further mineralogical investigation was undertaken with the results recorded below. The rocks under examination were light-coloured gneisses containing up to 15% BaO. They are distributed as lenses and streaks in an acid gneiss. A specimen of the latter rock was analysed and found to contain only 0·09% BaO. The barium was found to occur in four felspars, one being a new variety of celsian. The minerals studied were celsian, calciocelsian, hyalophane, and barium-plagioclase. A careful search was made for other barium silicate minerals such as sanbornite, but none was found.

Time Budget and Related Aspects of the Foraging Behavior of the Yellow-Bellied Glider, Petaurus-Australis

1989 ◽  
Vol 16 (1) ◽  
pp. 105 ◽  
Author(s):  
RL Goldingay
Keyword(s):  
Foraging Behavior ◽  
New South ◽  
Time Budget ◽  
New South Wales ◽  
Feeding Time ◽  
South Wales ◽  
A Site ◽  
Petaurus Australis

The time budget of the Yellow-bellied Glider was determined at a site in southern New South Wales. Gliders spent most of the night outside their dens (96% in summer, 73% in winter) and devoted an average of 81% of this time to feeding but only 2% to inactivity. When feeding time is coupled with that for other behaviours essential for foraging (i.e. gliding and climbing), 90% of the time outside the den is accounted for. This is among the highest values yet found for a mammal. The amount of time gliders spent in trees was significantly greater when feeding on exudates (on average >48 min per tree) than when harvesting arthropods and other food types from under loose bark (<13 min per tree). Distances traversed by gliders observed for entire nights (range 590-2350 m) appear to reflect this pattern but further data are required. Food types also influenced the occurrence of gliders feeding together in the same tree. The implications of these results are discussed in relation to the energetics of foraging gliders.

No evidence of protracted population decline across 17 years in an unmanaged population of the green and golden bell frog in north-eastern New South Wales

2017 ◽  
Vol 65 (2) ◽  
pp. 87
Author(s):  
Ross L. Goldingay ◽  
Jonathan Parkyn ◽  
David A. Newell
Keyword(s):  
New South ◽  
Population Decline ◽  
New South Wales ◽  
Common Species ◽  
Population Models ◽  
Litoria Aurea ◽  
South Wales ◽  
Eastern Australia ◽  
North Eastern ◽  
Management And Conservation

Describing the population trends of threatened species over time is central to their management and conservation. The green and golden bell frog (Litoria aurea) is a formerly common species of south-eastern Australia that has declined to ~40 populations in New South Wales, and experienced a substantial contraction of its geographic range. We aimed to determine whether an unmanaged population at the northern end of its range had declined across a 17-year period. We estimated population size at the beginning and end of this period, using several population models to fully characterise this population. Different modelling approaches gave different population estimates. Based on a similar number of survey occasions the adult male segment of the population was estimated using the Popan model at 112.0 (±13.5, s.e.; 95% CI: 85.5–138.8) in 1998/99 and 95.2 (±17.6; 60.8–129.7) in 2015/16. With the inclusion of maturing subadults following the practice of earlier studies, the population was estimated at 163.6 (±25.9; 112.8–214.5) males in 2015/16. These estimates represent an index of a larger population because the largest wetland was subsampled. Our data provide no evidence of a declining population. Our study highlights the need to understand the implications of using different population models and two age-classes to estimate population parameters.

Multi-Tower Line Focus Fresnel Array

Solar Energy ◽  
2003 ◽  
Author(s):  
David R. Mills ◽  
Graham Morrison ◽  
Peter le Lievre
Keyword(s):  
New South ◽  
New South Wales ◽  
High Capacity ◽  
Solar Array ◽  
Multiple Receivers ◽  
South Wales ◽  
Linear Fresnel Reflector ◽  
Set Up ◽  
Very High ◽  
Line Focus

As an alternative to conventional tracking trough systems, one may use line focus Fresnel reflector systems. Before the current Australian work, each field of Fresnel reflectors was directed to a single tower. However, efficient systems of very high ground utilisation can be set up if a field of reflectors uses multiple receivers on different towers (Mills and Morrison, 1999). This paper describes an Australian line focus system, called the Compact Linear Fresnel Reflector (CLFR) system and a project to produce an initial 25MWe solar array. The array will be used as a retrofit preheater for a coal fired generating plant. Future use of such arrays as stand alone high capacity factor powerplants in New South Wales are discussed.

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