Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Life Sciences
Patterns Of Water Uptake And Rhizosphere Salinity In Casuarina Obesa Miq. During A Drying Period At Lake Toolibin, Western Australia, Patrick J. Mitchell
Patterns Of Water Uptake And Rhizosphere Salinity In Casuarina Obesa Miq. During A Drying Period At Lake Toolibin, Western Australia, Patrick J. Mitchell
Theses : Honours
Lake Toolibin is one of a few remaining freshwater lakes in the central wheatbelt of Western Australia. Since monitoring began at Lake Toolibin in the early 1970's groundwater levels have risen to within 1-2 m of the lakebed with an accompanying migration of salt. The site-specific nature of water uptake in Casuarina obesa Miq. (the dominant lakebed tree species) and rhizosphere salinity were explored spatially through analyses of soil properties (groundwater depth and salinity, particle size and components of soil water potential ψ1). Plant water sources (using δ2H signatures) and water availability (based on ψleaf …
Investigation Into The Population Dynamics And Key Life History Characteristics Of Non-Biting Midge (Diptera: Chironomidae) Which Can Be Utilised To Improve Nuisance Control At Lake Joondalup, Western Australia, Michael Roberts
Theses : Honours
Non-biting midges (Diptera: Chironomidae) become a severe nuisance to humans living close to urban wetlands when they emerge at night to form mating swarms. The phototactic nature of adult chironomids means that large quantities of chironomids congregate around artificial lighting prominent in the surrounding suburbs of urban wetlands. This nuisance problem has compelled the investigation of suitable control options which are able to reduce the numbers of midges to below nuisance levels for an extended period. Currently the options available to control chironomid populations rely on the treatment of affected wetlands with pesticide. These treatment regimes are usually only successful …
Using Habitat Characteristics And Predictive Gis Modelling To Aid In Conserving The Heath Mouse (Pseudomys Shortridgei) In Lake Magenta Nature Reserve, Kirsty Quinlan
Theses : Honours
The Heath Mouse (Pseutlomys shortridgei) was formerly widely distributed in Western Australia and Victoria. However, now it is known only to exist in areasof fragmented habitat. Heath Mouse populations have not been investigated in Western Australia, as it was thought to be extinct in the state until its rediscovery in 1987. It is known from only tour locations, and from these, the highest numbers known are probably the 18 captures of this mouse from five years of trapping in Lake Magenta Nature Reserve. Given the few numbers of Heath Mice, the purpose of this study was to identify …