The Effectiveness of Aerial Baiting for the Control of Dingoes in North-Western Australia

1986 ◽  
Vol 13 (2) ◽  
pp. 165 ◽  
Author(s):  
PC Thomson
Keyword(s):  
Social Status ◽  
Western Australia ◽  
Cost Effective ◽  
Control Technique ◽  
Long Term Effects ◽  
The West ◽  
Fresh Meat ◽  
North Western

Radiotracking was used to evaluate the effectiveness of aerial baiting in controlling populations of wild dingoes, Canisfamiliaris dingo. Four baitings were carried out in the West Pilbara region of Western Australia, using fresh-meat baits or factory-produced baits, poisoned with compound 1080. In one trial fresh-meat baits killed all 18 radio-collared dingoes; in another, factory baits killed 63% of radio-collared dingoes; in a third, 62% were killed by factory and fresh-meat baits. The factors considered to be most important in influencing the results of these trials included the number and distribution of baits dropped, bait type, and the age and social status of dingoes. Aerial baiting was shown to be an efficient and cost-effective dingo control technique under the conditions existing during the study. The long-term effects on the dingo population are discussed.

The influence of plant diversity on the resilience of harvester termites to fire

1995 ◽  
Vol 2 (3) ◽  
pp. 279 ◽  
Author(s):  
Max Abensperg-Traun ◽  
Dion Steven ◽  
Lyn Atkins
Keyword(s):  
Western Australia ◽  
High Intensity ◽  
Experimental Studies ◽  
Grazing Pressure ◽  
Livestock Grazing ◽  
Floristic Diversity ◽  
Long Term Effects ◽  
Burnt Area ◽  
Food Species

The harvester termites in floristically rich mallee-heath of southern Western Australia appear resilient to high-intensity fire. This contrasts with the temporary extinction of harvesters occupying a narrow food niche in floristically simple, intensely burnt spinifex Triodia angusta grassland in tropical Western Australia. The present study examines the effects of high-intensity fire on harvester termites Drepanotermes tamminensis in vegetation of intermediate floristic diversity and compares its findings with these earlier studies. We sampled 20 mounds (termitaria) in both an unburnt and (adjacent) burnt stand of Allocasuarina campestris shrubland. Although partially regenerated three years after the fire, 40% of mounds in the burnt area were abandoned, contrasting with 10% in the unburnt stand. No harvested chaff was found in any of the abandoned mounds. The extent of mound occupation by D. tamminensis was considerably lower, and ant invasion higher, in the burnt stand. These findings are consistent with the hypothesis that high floristic diversity enhances the resilience of harvester termites to fire. The most likely mechanism is the availability of a range of plant (food) species with different regenerative responses to high-intensity fire. The death of spinifex and the associated harvester termites after fire may be atypical. We argue, however, that temporary extinction of harvester populations in arid Australia may not be exceptional, particularly where fire coincides with drought and high livestock grazing pressure. Rigorous experimental studies are necessary to enhance our understanding of the long-term effects of fire on harvester termite populations in different vegetation types and climatic zones.

scholarly journals Simple Soil Tests for On-Site Evaluation of Soil Health in Orchards

2019 ◽  
Vol 11 (21) ◽  
pp. 6009
Author(s):  
Esther O. Thomsen ◽  
Jennifer R. Reeve ◽  
Catherine M. Culumber ◽  
Diane G. Alston ◽  
Robert Newhall ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Soil Health ◽  
Soil Nutrient ◽  
Cost Effective ◽  
Nutrient Concentrations ◽  
Long Term Effects ◽  
Soil Tests ◽  
Site Evaluation ◽  
Positive Correlations

Standard commercial soil tests typically quantify nitrogen, phosphorus, potassium, pH, and salinity. These factors alone are not sufficient to predict the long-term effects of management on soil health. The goal of this study was to assess the effectiveness and use of simple physical, biological, and chemical soil health indicator tests that can be completed on-site. Analyses were conducted on soil samples collected from three experimental peach orchards located on the Utah State Horticultural Research Farm in Kaysville, Utah. All simple tests were correlated to comparable lab analyses using Pearson’s correlation. The highest positive correlations were found between Solvita® respiration, and microbial biomass (R = 0.88), followed by our modified slake test and microbial biomass (R = 0.83). Both Berlese funnel and pit count methods of estimating soil macro-organism diversity were fairly predictive of soil health. Overall, simple commercially available chemical tests were weak indicators of soil nutrient concentrations compared to laboratory tests. Modified slake tests, Solvita® respiration and soil organism biodiversity counts may be efficient and cost-effective tools for monitoring soil health on-site.

Long-term effects of warren ripping for rabbit control in semi-arid South Australia.

1991 ◽  
Vol 13 (2) ◽  
pp. 96 ◽  
Author(s):  
GJ Mutze
Keyword(s):  
South Australia ◽  
Cost Effective ◽  
Long Term Effects ◽  
Short Term ◽  
Long Term Effect ◽  
Perennial Shrubs ◽  
Control Work ◽  
Semi Arid

Warren ripping and poisoning were used to control rabbits on the flood-out plain of a major creek system on Manunda Station, a sheep-grazing property near Yunta in semi-arid South Australia. Rabbit numbers were initially reduced by >99 per cent, as indicated by the number of active entrances remaining in rabbit warrens. After nearly 10 years without follow-up control work, ripped warrens had only two per cent of the pre-control number of active entrances. Poisoning effectively reduced rabbit numbers in the short-term, but had no long-term effect on the number of active entrances, either in ripped or unripped warrens. Perennial shrubs regenerated on and around ripped warrens. Warren ripping on this part of Manunda is a cost-effective management option.

What can echolocation recordings reveal about the foraging ecology of Saccolaimus saccolaimus (Emballonuridae) in north-western Australia?

2018 ◽  
Vol 66 (6) ◽  
pp. 326
Author(s):  
N. L. McKenzie ◽  
R. D. Bullen
Keyword(s):  
Western Australia ◽  
Foraging Ecology ◽  
Beat Frequency ◽  
Cost Effective ◽  
Peak Frequency ◽  
Foraging Strategy ◽  
Design Parameters ◽  
Foraging Niche ◽  
Pulse Peak ◽  
North Western

Echolocation sequences reveal aspects of the foraging ecology of Saccolaimus saccolaimus (Emballonuridae). In combination, pulse peak-frequency and fineness-of-tuning values derived from free-flying search-mode echolocation sequences emitted by S. saccolaimus in north-western Australia imply that it generally forages in uncluttered airspaces using an air superiority foraging strategy. Wing-beat frequency values, derived from pulse repetition rates in these sequences, reveal that it has a maximum aerobic level-flight speed of 8.1 m s–1 (used for foraging). These predictions are consistent with deductions based on airframe design parameters taken from museum specimens, and with available field observations. The echolocation recordings provided a quick, passive, cost-effective characterisation of foraging niche, useful for conservation planning.

Cost-Effective Methods of Monitoring Pesticide Pollution in Water

2019 ◽  
pp. 236-256
Author(s):  
S. Kanagasubbulakshmi ◽  
Krishnasamy Lakshmi ◽  
K. Kadirvelu
Keyword(s):  
Multidisciplinary Approach ◽  
Cost Effective ◽  
Long Term Effects ◽  
Pesticide Monitoring ◽  
Pesticide Pollution ◽  
Lack Of Information ◽  
Pros And Cons ◽  
Labeling Requirements ◽  
Monitoring Technologies

Environmental protection efforts require numerous advanced technologies to prevent and monitor the health and ecological effects associated with abiotic and biotic systems. Development of innovative tools and methodologies with the help of multidisciplinary approach to assess the transport, accumulation, and impact of pesticides will avoid the long-term effects in the environment. The lack of information about the pesticides hampers the labeling requirements that lead to misuse and discharge of pesticide-contaminated effluents into the water resources. This chapter covers the information on major sources of pesticides, chronic impacts, labeling of pesticides, multidisciplinary approach for monitoring, current cost-effective technologies, pros and cons of current technologies, and future perspectives of the pesticide monitoring technologies.

Consequences and Continuities

2018 ◽  
Author(s):  
Paul D. Escott
Keyword(s):  
Civil War ◽  
African Americans ◽  
National Government ◽  
Nation State ◽  
Long Term Effects ◽  
The West ◽  
New Ideas ◽  
North And South

This chapter focuses on the consequences of the Civil War, especially for the nation-state, for African Americans, and for the West. It examines, with commentary and suggestions, new ideas about how to conceptualize the era. An uneven process of national consolidation yielded a national government that was strong in some areas and weak or absent in others. The long-term effects of the war on communities, veterans, immigrants, and attitudes North and South are key areas for research.

Maternal dietary intake during pregnancy has longstanding consequences for the health of her offspring

2013 ◽  
Vol 91 (6) ◽  
pp. 412-420 ◽  
Author(s):  
Ryan James Wood-Bradley ◽  
Sarah Louise Henry ◽  
Amanda Vrselja ◽  
Victoria Newman ◽  
James Andrew Armitage
Keyword(s):  
Dietary Intake ◽  
Maternal Nutrition ◽  
Metabolic Diseases ◽  
Communicable Disease ◽  
Cost Effective ◽  
Noncommunicable Disease ◽  
Fat Intake ◽  
Long Term Effects ◽  
Beneficial Impact

Over the past 100 years, advances in pharmaceutical and medical technology have reduced the burden of communicable disease, and our appreciation of the mechanisms underlying the development of noncommunicable disease has broadened. During this time, a number of studies, both in humans and animal models, have highlighted the importance of maintaining an optimal diet during pregnancy. In particular, a number of studies support the hypothesis that suboptimal maternal protein and fat intake during pregnancy can have long-term effects on the growing fetus, and increase the likelihood of these offspring developing cardiovascular, renal, or metabolic diseases in adulthood. More recently, it has been shown that dietary intake of a number of micronutrients may offset or reverse the deleterious effects of macronutrient imbalance. Furthermore, maternal fat intake has also been identified as a major contributor to a healthy fetal environment, with a beneficial role for unsaturated fats during development as well as a beneficial impact on cell membrane physiology. Together these studies indicate that attempts to optimise maternal nutrition may prove to be an efficient and cost-effective strategy for preventing the development of cardiovascular, renal, or metabolic diseases.

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