The distribution of Halotydeus destructor and Penthaleus major (Acari : Eupodidae) in Australia in relation to climate and land use

1971 ◽  
Vol 19 (1) ◽  
pp. 65 ◽  
Author(s):  
MMH Wallace ◽  
JA Mahon
Keyword(s):  
Land Use ◽  
Mediterranean Region ◽  
New South ◽  
New South Wales ◽  
Growing Season ◽  
Coastal Areas ◽  
Halotydeus Destructor ◽  
South Wales ◽  
Summer Temperatures ◽  
Summer Rain

The red-legged earth mite, H, destructor, is restricted to the southern parts of Australia having a Mediterranean-type climate, with warm dry summer and cool wet winter. The northern or inland distribution agrees closely with the 205-mm isohyet for the growing season May-October inclusive. The eastern distribution is limited by the quantity of midsummer (December-March) rainfall and agrees closely with the 225-mm isohyet for this period. Other limitations to distribution within these isohyets are imposed by high summer temperatures (mean monthly maximum of hottest month, 33�C). The blue oat mite, P. major, can tolerate a drier climate, reaching a May-October isohyet of about 190 mrn, and a higher proportion of summer rain. This enables it to survive on the south coast of New South Wales and on the northern tablelands of New South Wales as far as southern Queensland, but not in north coastal areas where the midsummer rainfall exceeds about 500 mm. On the evidence available, the likely future movements of these mites both within Australia and overseas are discussed. Vigilance will be needed to prevent H. destructor from becoming a pest in the Americas and in the Mediterranean region.

The ecology of Sminthurus viridis (Collembola) III. The influence ofclimate andl land use on its distribution and that of an important predator, Bdellodea lapidaria (Acari : Bdellidae)

1971 ◽  
Vol 19 (2) ◽  
pp. 177 ◽  
Author(s):  
MMH Wallace ◽  
JA Mahon
Keyword(s):  
Land Use ◽  
Low Temperatures ◽  
New South ◽  
New South Wales ◽  
Summer Rainfall ◽  
Growing Season ◽  
Predatory Mite ◽  
South Wales ◽  
Important Predator ◽  
Distribution Limits

The lucerne flea, S. viridis, is restricted to the southern parts of Australia and, apart from a few isolated occurrences in eastern New South Wales, occurs only in areas with an essentially Mediterranean-type climate. The northern inland limit to its distribution agrees closely with the 250-mm isohyet for the growing season of May-October inclusive. The eastern limit to distribution in New South Wales and Victoria agrees with a December-March isohyet of 225 mm. Areas east of this line receive predominantly summer rainfall, and the pastures contain a high proportion of perennial plants which probably do not provide the nutritional stimulus for the development of aestivating diapause eggs in S. viridis essential for oversummering. The predatory mite B. lapidaria requires slightly moister conditions than S. viridis and the limit of its inland distribution agrees reasonably well with the 260-mm isohyet for the May-October period. Low temperatures (mean maximum < 17.5'C) also seem necessary during this period. The eastern distribution limits in Victoria are similar to those of S. viridis.

Persistence and water use efficiency of a tropical grass and lucerne on a solodic soil on the Far North-West Slopes of New South Wales

1993 ◽  
Vol 33 (2) ◽  
pp. 245 ◽  
Author(s):  
PG Tow
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Dry Matter ◽  
New South ◽  
New South Wales ◽  
North West ◽  
South Wales ◽  
Summer Temperatures ◽  
Spring Temperatures ◽  
Use Efficiency

The persistence and water use efficiency of Digitaria eriantha spp. eriantha and Hunter river lucerne were compared on red solodic soil with a hardsetting surface and poor internal drainage, on the North- West Slopes of New South Wales. After prolonged watering, the profile was wet to a depth of 48 � 1.5 cm, with an available moisture store of 90 mm. Over 3 years, persistence of digitaria was excellent. The population of lucerne was reduced following flooding at summer temperatures, Dry matter production of nitrogen (N) fertilised digitaria per mm warm season rainfall was similar to that of tropical grasses adapted to comparable rainfall environments in subtropical Queensland. Lucerne dry matter per mm rainfall was only about half that of digitaria (3.2 v. 6.3 kg). Lucerne grew well in mixture with digitaria except under prolonged wet soil conditions in summer. Artificial solodic profiles were constructed in the glasshouse to compare digitaria and lucerne in monoculture and mixture under varying temperature, moisture, and N regimes. Lucerne showed sensitivity to both high and low moisture levels at summer temperatures but performed very well at spring temperatures and moderate moisture levels where the mean evapotranspiration ratio was 400 g water per g dry matter. Water use efficiency was higher in digitaria than in lucerne, except at spring temperatures without added N. Water use efficiency of the mixture was always similar to that of the most efficient monoculture of the particular treatment.

Pastoral Management, Economics and Land Use Options in the Poplar Box (Eucalyptus populnea) Lands of New South Wales.

1979 ◽  
Vol 1 (4) ◽  
pp. 260 ◽  
Author(s):  
RW Condon
Keyword(s):  
Land Use ◽  
New South ◽  
New South Wales ◽  
Major Influence ◽  
Land Settlement ◽  
South Wales ◽  
Settlement Policies ◽  
Pastoral Management ◽  
Eucalyptus Populnea

This article describes how land settlement policies over a period of 100 years and shrub regeneration in parts of the poplar box (Eucalyptus populnea) lands in New South Wales have had and will continue to have a major influence on the economics of grazing properties in the region. Choise of animals offers few options, but there are many methods of improving productivity which may be applicable to a particular property; their feasibility is being tested in a pilot rehabilitation scheme which is described. Choice of animals offers few options, but there are many methods of improving productivity which may be applicable to a particular property; their feasibility is being tested in a pilot rehabilitation scheme which is described.

Current Land Use in the Poplar Box (Eucalyptus Populnea) Lands.

1980 ◽  
Vol 2 (1) ◽  
pp. 31 ◽  
Author(s):  
EJ Weston ◽  
DF Thompson ◽  
BJ Scott
Keyword(s):  
Land Use ◽  
Native Species ◽  
Crop Production ◽  
New South ◽  
New South Wales ◽  
High Water ◽  
Grazing Pressure ◽  
Small Areas ◽  
South Wales ◽  
Domestic Livestock

Poplar box (Eucalyptus populnee) woodlands mainly occuron duplex, clay and red earth soils between the 300 mm and 750 mm rainfall isohyets. The poplar box lands have been occupied for from 100 to 150 years and have been modified extensively through tree felling, ringbarking, clearing, cultivation, burning and grazing by domestic livestock. The current land use is described for six vegetation groups which together comprise the poplar box lands. The eastern areas of the poplar box lands are mainly used for intensive agriculture based on wheat. barley and grain sorghum, with small areas sown to c~ops of high water demand. Mixed farming involves dairying (in Queensland) and fat lambs (in New South Wales) and broad-acre cereal and fodder cropping. Sheep and cattle grazing replace intensive crop production as the rainfall decreases. In all areas used for cropping the stability and fertility of the soil are of paramount importance in maintainihg production. The use of woodlands in areas of lower rainfall can lead to deterioration of the resource and to the encroachment of woody native species into the grazing lands. Because cropping is unreliable the opportunity to use cultivation to control woody regrowth is reduced. In central areas much of the land can be sown to improved pastures, but in western areas diversification is limited by the low rainfall and land use is restricted to grazing, initially only by sheep but now by sheep and cattle. Particularly in western New South Wales the increase in unpalatable shrubs and the decrease in available forage has resulted in low stocking rates, and high grazing pressure, making reclamation and pasture improvement difficult. In consequence many enterprises are becoming uneconomic.

Land Use and Lake Sedimentation on the New England Tablelands of New South Wales, Australia

1999 ◽  
Vol 30 (1) ◽  
pp. 51-73 ◽  
Author(s):  
R. J. HAWORTH ◽  
S. J. GALE ◽  
S. A. SHORT ◽  
H. HEIJNIS
Keyword(s):  
Land Use ◽  
New England ◽  
New South ◽  
New South Wales ◽  
South Wales ◽  
Lake Sedimentation

The adoption of short-rotation energy cropping as a new land use option in the New South Wales Central West

Rural Society ◽  
2011 ◽  
Vol 20 (3) ◽  
pp. 266-279 ◽  
Author(s):  
Alex Baumber ◽  
John Merson ◽  
Peter Ampt ◽  
Mark Diesendorf
Keyword(s):  
Land Use ◽  
New South ◽  
New South Wales ◽  
Short Rotation ◽  
South Wales ◽  
Rotation Energy

Carbon storage in the soils and vegetation of contrasting land uses in northern New South Wales, Australia

Soil Research ◽  
2005 ◽  
Vol 43 (1) ◽  
pp. 21 ◽  
Author(s):  
Rick Young ◽  
Brian R Wilson ◽  
Malem McLeod ◽  
Clair Alston
Keyword(s):  
Land Use ◽  
Soil Carbon ◽  
New South ◽  
New South Wales ◽  
Continuous Cultivation ◽  
Carbon Accounting ◽  
Land Uses ◽  
South Wales ◽  
Organic Carbon Stock ◽  
Carbon Concentrations

The organic carbon stock in biomass and soil profiles sampled from nearby paddocks with different land-use histories was estimated at 7 sites in the upper Liverpool Plains catchment and the Manilla district of north-western New South Wales, Australia. The distribution of soil carbon concentrations over a depth of 2 m was significantly affected by site and land use. Continuous cultivation and cropping over ≥20 years significantly depleted carbon concentrations compared with grassy woodlands in the surface 0.20 m at all sites and to a depth of 0.60 m at 3 sites. Depth of sampling (0–0.20 v. 0–1.0 m) significantly affected the differences between land uses at most sites regarding estimates of the stock of soil carbon. These results show that differences in soil carbon concentrations and stock size do not remain constant with depth between contrasting land uses. However, comparisons between land uses of the total amount of carbon stored were dominated by the number of trees per ha and the size of the trees in grassy woodlands. The implications of these results for carbon accounting 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.

SGS Animal Production Theme: effect of grazing system on animal productivity and sustainability across southern Australia

2003 ◽  
Vol 43 (8) ◽  
pp. 977 ◽  
Author(s):  
J. F. Graham ◽  
B. R. Cullen ◽  
G. M. Lodge ◽  
M. H. Andrew ◽  
B. P. Christy ◽  
...  
Keyword(s):  
New South ◽  
New South Wales ◽  
Growing Season ◽  
Grazing Management ◽  
Annual Rainfall ◽  
Grass Species ◽  
Stocking Rate ◽  
Growing Season Length ◽  
North East ◽  
South Wales

The effects of various grazing management systems on sown, naturalised, and native pastures were studied at 6 different locations in the temperate high rainfall zone (HRZ, >600 mm rainfall/year) of southern Australia, as part of the Sustainable Grazing Systems (SGS) Program. The treatments examined had different pasture species and fertiliser management, with grazing method ranging from set stocking (continuous grazing) to rotation with rests based on pre- and post-grazing herbage mass or season and plant phenology. Sites were located at: Albany, Western Australia; Manilla, Barraba, Nundle, New South Wales; (grazed by wethers); and Carcoar, New South Wales; Maindample, Ruffy, north-east Victoria; Vasey, western Victoria; (grazed by ewes and lambs).Grazing method significantly (P<0.001) influenced stocking rate (expressed as dry sheep equivalents (DSE)/ha), but effects were not consistent across sites. At Vasey the stocking rate of the rotation treatments ranged from 5 to 23% higher than the set stocked treatments depending upon year. For all sites, significant factors (P<0.001) affecting stocking rate were soil Olsen P, soil pH, grazing management (resting), legume percent, and an index of growing season effectiveness. Although total annual rainfall had a significant effect (P<0.002) in an initial analysis, its influence became non-significant (P>0.05), when a growing season index (P<0.001) was used. Non-significant (P>0.05) factors included solar radiation, annual average temperature, fertiliser applied in the current year, and average annual perennial and broadleaf percent composition. The implications of these data for productivity and sustainability (as assessed by perenniality and water use) were encouraging. Generally, there were positive relationships between increased stocking rate and the probability of achieving a zero mm soil water surplus in winter, and between increased productivity and the proportion of perennial grass species where extremes of treatments were compared at each site. The results indicate that stocking rate can be increased without jeopardising sustainability, that grazing management can bring about more sustainable pastures, that there is scope to increase productivity particularly through increasing soil fertility, and growing season length can be used to predict potential carrying capacity. These are positive outcomes that graziers in the HRZ of southern Australia can use to enhance productivity (thus profitability) and sustainability.

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