Estimating Safe Carrying Capacities of Extensive Cattle-Grazing Properties Within Tropical, Semi-Arid Woodlands of North-Eastern Australia.

1994 ◽  
Vol 16 (1) ◽  
pp. 64 ◽  
Author(s):  
JC Scanlan ◽  
GM Mckeon ◽  
KA Day ◽  
JJ Mott ◽  
AW Hinton
Keyword(s):  
Resource Use ◽  
Carrying Capacity ◽  
Cattle Grazing ◽  
Resource Information ◽  
Eastern Australia ◽  
North Eastern ◽  
Highly Correlated ◽  
Objective Basis ◽  
Semi Arid

A methodology is presented to estimate the safe carrying capacity of properties in extensive cattle- grazing regions within tropical, semi-arid woodlands of north-eastern Australia. Carrying capacities for 45 properties were calculated from resource information collected from the properties. These calculated carrying capacities were then compared with graziers' estimates and with Queensland Department of Lands' ratings. The rated carrying capacities were not correlated with either the calculated values or the graziers' estimates, and in general were much lower than both other values. The graziers' estimates and the calculated values were highly correlated with a slope not significantly different from 1 (p>0.1). This methodology could form the basis of a review of rated carrying capacities on an objective basis. Refinements would be necessary to improve the determination of individual cases with particular emphasis on spatial variability of resource use and fine scale variability in soil fertility and tree and shrub density.

scholarly journals Will the Australian nuclear medicine technologist workforce meet anticipated health care demands?

2008 ◽  
Vol 32 (2) ◽  
pp. 282 ◽  
Author(s):  
Edwina Adams ◽  
Deborah Schofield ◽  
Jennifer Cox ◽  
Barbara Adamson
Keyword(s):  
Nuclear Medicine ◽  
Census Data ◽  
Service Needs ◽  
The Past ◽  
Eastern Australia ◽  
North Eastern ◽  
Nuclear Medicine Technologist ◽  
Professional Body ◽  
Care Demands

Determination of national nuclear medicine technologist workforce size was made from census data in 2001 and 1996 and from the professional body in 2004. A survey conducted by the authors in 2005 provided retention patterns in north-eastern Australia and suggested causes. Utilisation of nuclear medicine diagnostic services was established through the Medicare Benefits Schedule group statistics. More than half the nuclear medicine technologist workforce is under 35 years of age. Attrition commences from age 30, with very few workers over 55 years. In 2005 there was a 12% attrition of the survey workforce. In the past decade, service provision increased while workforce size decreased and the nuclear medicine technologist workforce is at risk of failing to meet the anticipated rise in health service needs.

Coccidiosis in wild rabbits, Oryctolagus cuniculua (L.) at four sites in different climatic regions in eastern Australia II.The relationship of oocyst output to climate and to some aspects of the rabbit's physiology

1968 ◽  
Vol 16 (4) ◽  
pp. 619 ◽  
Author(s):  
E Stodart
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Host Age ◽  
Seasonal Fluctuations ◽  
Climatic Regions ◽  
Eastern Australia ◽  
Highly Correlated ◽  
Relationship Of ◽  
Semi Arid ◽  
Eimeria Stiedae

Rabbit populations were sampled regularly during 1962-64 at four sites in different climatic regions (subalpine, mediterranean, subtropical, and semi-arid) in eastern Australia. A total of 2981 rabbits were taken by shooting at night. Oocysts in the faeces were identified as Eimeria stiedae, E. media, E. perforans, E. irresidua, E. magna, E. piriformis, and E. exigua. Infections were highest and most frequent at the subalpine site, less at the sites with mediterranean and subtropical climates, and were not common at the semi-arid site. Regular seasonal fluctuations occurred at the subalpine and mediterranean sites, with troughs occurring in summer. Multiple regression analysis of oocyst count on several anatomical and climatic measurements showed that, except at the semi-arid site, oocyst count was significantly related to measurements highly correlated with host age, and to evaporation (during the preceding 8 weeks); at the semi-arid site rainfall was the only really significant factor. Differences between species of coccidia were small compared with the differences between sites.

scholarly journals Integrated shrub management in semi-arid woodlands of eastern Australia: ground and aerial application of defoliant to shrubs regenerating after disturbance

2005 ◽  
Vol 27 (2) ◽  
pp. 117 ◽  
Author(s):  
J. C. Noble ◽  
W. J. Müller ◽  
N. D. MacLeod ◽  
Z. Bodulovic ◽  
P. Jones ◽  
...  
Keyword(s):  
Prescribed Fire ◽  
Net Present Value ◽  
Preliminary Treatment ◽  
Threshold Rate ◽  
Eastern Australia ◽  
Increased Sensitivity ◽  
Aerial Spraying ◽  
Economic Analyses ◽  
Semi Arid

This paper describes experiments undertaken at several sites in semi-arid woodlands of eastern Australia to determine if chemicals applied either on the ground or from the air reduce the density of shrubs regenerating after disturbance. Ground-spraying of Roundup® in the autumn was more effective than spring application in defoliating shrubs, especially 2-year-old coppice growth. Spraying of Roundup with a hand-held boom at 0.5 up to 2.5 kg glyphosate/ha identified rates to be used for boom spraying. Aerial spraying experiments were then undertaken across several sites and involved several target species. The location of sufficiently large areas where shrub regeneration was of an optimum age (i.e. about 2–3 years) proved to be extremely difficult due to prevailing drought conditions precluding the use of prescribed fire as a preliminary treatment. Nonetheless in one experiment, young (1-year-old) regrowth of firebush (Senna pleurocarpa) exhibited increased sensitivity to Roundup with significant shoot mortality recorded after it had been applied at 0.5 kg glyphosate/ha. Aerial spraying based on an ultra-low volume application of 10 L/ha further enhanced cost-effectiveness on this occasion. Economic analyses structured around 20-year partial budgeting and determination of net present value (NPV) suggested a profitable return could be expected where treatment was based on Roundup applied at this threshold rate 2 years after a prescribed fire, especially when the rehabilitation costs were spread over an entire paddock that had been only partially sprayed. Finally, operational aspects involving aerial spraying in these semi-arid woodlands are also discussed.

Detection of Circulating Tissue Factor and Factor VII in a Normal Population

1996 ◽  
Vol 75 (05) ◽  
pp. 772-777 ◽  
Author(s):  
Sybille Albrecht ◽  
Matthias Kotzsch ◽  
Gabriele Siegert ◽  
Thomas Luther ◽  
Heinz Großmann ◽  
...  
Keyword(s):  
Tissue Factor ◽  
Normal Population ◽  
Mean Value ◽  
Factor Vii ◽  
Significant Difference ◽  
Age Dependent ◽  
The Mean ◽  
Highly Correlated ◽  
And Gender

SummaryThe plasma tissue factor (TF) concentration was correlated to factor VII concentration (FVIIag) and factor VII activity (FVIIc) in 498 healthy volunteers ranging in age from 17 to 64 years. Immunoassays using monoclonal antibodies (mAbs) were developed for the determination of TF and FVIIag in plasma. The mAbs and the test systems were characterized. The mean value of the TF concentration was 172 ± 135 pg/ml. TF showed no age- and gender-related differences. For the total population, FVIIc, determined by a clotting test, was 110 ± 15% and the factor VIlag was 0.77 ± 0.19 μg/ml. FVII activity was significantly increased with age, whereas the concentration demonstrated no correlation to age in this population. FVII concentration is highly correlated with the activity as measured by clotting assay using rabbit thromboplastin. The ratio between FVIIc and FVIIag was not age-dependent, but demonstrated a significant difference between men and women. Between TF and FVII we could not detect a correlation.

THE CLASSIFICATION OF LAND ACCORDING TO THE DEGREE OF RABBIT INFESTATION IN CENTRAL OTAGO

1987 ◽  
pp. 65-70
Author(s):  
I.G.C. Kerr ◽  
J.M. Williams ◽  
W.D. Ross ◽  
J.M. Pollard
Keyword(s):  
Carrying Capacity ◽  
Mediterranean Climate ◽  
Natural Habitat ◽  
Public Funding ◽  
Soil Survey ◽  
European Rabbit ◽  
Cultural Modification ◽  
Classification Information ◽  
Semi Arid

The European rabbit (Oryctolagus cuniculus) introduced into New Zealand in the 183Os, has consistently flourished in Central Otago, the upper Waitaki, and inland Marlborough, all areas of mediterranean climate. It has proved difficult to manage in these habitats. The 'rabbit problem' is largely confined to 105,000 ha of low producing land mostly in semi arid areas of Central Otago. No field scale modifications of the natural habitat have been successful in limiting rabbit numbers. The costs of control exceed the revenue from the land and continued public funding for control operations appears necessary. A system for classifying land according to the degree of rabbit proneness is described. Soil survey and land classification information for Central Otago is related to the distribution and density of rabbits. This intormation can be used as a basis for defining rabbit carrying capacity and consequent land use constraints and management needs. It is concluded that the natural rabbit carrying capacity of land can be defined by reference to soil survey information and cultural modification to the natural vegetation. Classification of land according to rabbit proneness is proposed as a means of identifying the need for, and allocation of, public funding tor rabbit management. Keywords: Rabbit habitat, rabbit proneness, use of rabbit prone land.

Sign in / Sign up

Export Citation Format

Share Document