Do Australian Sheep Blowflies, Lucilia Cuprina (Diptera: Calliphoridae), Breed in Either Goat or Sheep Carcasses in a Semi-Arid Environment?

1995 ◽  
Vol 17 (2) ◽  
pp. 186 ◽  
Author(s):  
DF Cook ◽  
EC Steiner ◽  
I Watson ◽  
IR Dadour
Keyword(s):  
Life Cycle ◽  
Western Australia ◽  
Abundant Species ◽  
Arid Environment ◽  
Gut Contents ◽  
Australian Sheep ◽  
One Year ◽  
Insect Attack ◽  
Feral Goat ◽  
Semi Arid

Feral goat and sheep carcasses were exposed to insect attack on semi-arid pastoral land each month for one year. The native calliphorids Chrysomya rujifacies and Ch. varipes were by far the most abundant species de.veloping in virtually all carcasses. Sheep blowflies (L. cuprina) were incapable of developing from egg to adult on either feral goat or sheep carcasses during any month. Bush flies (Musca vetustissima) emerged from both feral goat and sheep carcasses from January to May, particularly from the gut contents. Chrysomya species were trapped in all months except June, whereas L. cuprina adults were only trapped from September to December. L. cuprina and Ch. rujifacies adults are very similar in appearance, hence many pastoralists assume that green blowflies on feral goat carcasses are sheep blowflies. However, this study clearly shows that L. cuprina are unable to complete their life cycle on either feral goat or sheep carcasses in the semi-arid environment of Carnarvon, Western Australia.

Ecotypic variation between and within two populations of Trifolium tomentosum (woolly clover) from Syria and Western Australia: its success as a colonising species

1999 ◽  
Vol 50 (8) ◽  
pp. 1443 ◽  
Author(s):  
Sarita Jane Bennett
Keyword(s):  
Western Australia ◽  
Function Analysis ◽  
Acid Soils ◽  
Arid Environment ◽  
Arid Environments ◽  
Alkaline Soils ◽  
Field Station ◽  
Ecotypic Variation ◽  
Site Variation ◽  
Semi Arid

Ecotypic variation was studied between and within populations of Trifolium tomentosum (woolly clover) using seed that was collected from 2 semi-arid environments: Tel Hadya, Syria, and Pingrup, Western Australia. The seed was collected from 64 subplots within a 40-m2 grid at each site and the material was grown at the University of Western Australia Field Station at Shenton Park, Perth. Fifteen morphological characters were scored and were analysed using analysis of variance, principal components analysis, and discriminant function analysis. Material from the 2 sites was separated using multivariate analysis, with the seed from Tel Hadya containing more within-site variation. It is suggested that the lack of within-site variation observed at Pingrup is the result of a number of factors: a limited amount of genetic diversity being present in the original introduced material, a preference of T. tomentosum for alkaline soils rather than the acid soils predominantly occurring in Western Australia, the harsh selection pressures present in a semi-arid environment, and a limited time for genotypes to adapt to specific micro-niches within each environment. The results are used to contribute to our understanding of the success of colonising species in semi-arid environments.

scholarly journals Water Resources Potentialities in the Wadi Mellegue Basin,Tebessa Region, Northeastern Algeria

2017 ◽  
Vol 9 (2) ◽  
pp. 66
Author(s):  
Guerrad Ch ◽  
Ch. Fehdi
Keyword(s):  
Water Resources ◽  
Plant Cover ◽  
Arid Environment ◽  
Vegetable Production ◽  
Irreversible Effect ◽  
One Year ◽  
Random Nature ◽  
Semi Arid ◽  
Mode Of Production

The problem of water is inseparable from sustainable development insofar as water must make it possible to meet the needs of present generations without mortgaging; the ability of future generations to meet their own needs. The first concern in semi-arid populated areas; it is the availability of water in relation to a growing societal demand.The immediate objective of a strategy for conserving and improving the productivity of water resources is to halt degradation with all its known forms and to promote a sustainable economy that will preserve and even enrich the quality of the assets And predispositions identified at the regional level. Tebessa is considered a semi-arid environment characterized by the rarity and the random nature of the resources, linked to an unpredictable climate and highly variable from one year to the next; The "sheep region", the "pastoralism", the "nomadism", the vegetable production very seriously compromised both by: The scarcity of the water resource, the fragility of the soil, the poverty of the mode of production, Pastoral type, based on the constant mobility of the herd in search of palatable plant cover, inducing a seemingly irreversible effect of desertification The progressive generalization of a mode of "mining" exploitation, made possible by the increasingly widespread use Modern means of transport, food, communication of information ...In this study, we examine the main water resources of Wadi Mellegue basin, available renewable water resources; The prospects for changing demand and the risks of scarcity.

CASE STUDY: Evaluation of Different Cooling Systems in Lactating Heat-Stressed Dairy Cows in a Semi-Arid Environment

2007 ◽  
Vol 23 (5) ◽  
pp. 546-555 ◽  
Author(s):  
R. Burgos ◽  
L.J. Odens ◽  
R.J. Collier ◽  
L.H. Baumgard ◽  
M.J. VanBaale
Keyword(s):  
Dairy Cows ◽  
Arid Environment ◽  
Cooling Systems ◽  
Study Evaluation ◽  
Semi Arid

scholarly journals Predicting the past, present and future distributions of an endangered marsupial in a semi‐arid environment

2021 ◽  
Author(s):  
J. Riley ◽  
M.R.K. Zeale ◽  
O. Razgour ◽  
J. Turpin ◽  
G. Jones
Keyword(s):  
Arid Environment ◽  
The Past ◽  
Semi Arid

scholarly journals Climatic Zone and Soil Properties Determine the Biodiversity of the Soil Bacterial Communities Associated to Native Plants from Desert Areas of North-Central Algeria

2021 ◽  
Vol 9 (7) ◽  
pp. 1359
Author(s):  
Elisa Bona ◽  
Nadia Massa ◽  
Omrane Toumatia ◽  
Giorgia Novello ◽  
Patrizia Cesaro ◽  
...  
Keyword(s):  
Soil Properties ◽  
Bacterial Communities ◽  
Arid Environment ◽  
Climatic Zone ◽  
Indigenous Plants ◽  
North Central ◽  
The North ◽  
Desert Areas ◽  
Plant Microbiota ◽  
Semi Arid

Algeria is the largest country in Africa characterized by semi-arid and arid sites, located in the North, and hypersaline zones in the center and South of the country. Several autochthonous plants are well known as medicinal plants, having in common tolerance to aridity, drought and salinity. In their natural environment, they live with a great amount of microbial species that altogether are indicated as plant microbiota, while the plants are now viewed as a “holobiont”. In this work, the microbiota of the soil associated to the roots of fourteen economically relevant autochthonous plants from Algeria have been characterized by an innovative metagenomic approach with a dual purpose: (i) to deepen the knowledge of the arid and semi-arid environment and (ii) to characterize the composition of bacterial communities associated with indigenous plants with a strong economic/commercial interest, in order to make possible the improvement of their cultivation. The results presented in this work highlighted specific signatures which are mainly determined by climatic zone and soil properties more than by the plant species.

Modelling groundwater evapotranspiration in a shallow aquifer in a semi-arid environment

2020 ◽  
Vol 587 ◽  
pp. 124967
Author(s):  
Ousmane Coly Diouf ◽  
Lutz Weihermüller ◽  
Mathias Diedhiou ◽  
Harry Vereecken ◽  
Seynabou Cissé Faye ◽  
...  
Keyword(s):  
Arid Environment ◽  
Shallow Aquifer ◽  
Groundwater Evapotranspiration ◽  
Semi Arid

Evaluating the effects of forest tree species on rill detachment capacity in a semi-arid environment

2021 ◽  
Vol 161 ◽  
pp. 106158
Author(s):  
Misagh Parhizkar ◽  
Mahmood Shabanpour ◽  
Isabel Miralles ◽  
Artemio Cerdà ◽  
Nobuaki Tanaka ◽  
...  
Keyword(s):  
Tree Species ◽  
Arid Environment ◽  
Forest Tree ◽  
Forest Tree Species ◽  
Semi Arid
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