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Edith Cowan University

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Articles 151 - 156 of 156

Full-Text Articles in Ecology and Evolutionary Biology

Origin And Fate Of Organic Matter In South-West Australian Wetlands, Darren Stuart Ryder Jan 2000

Origin And Fate Of Organic Matter In South-West Australian Wetlands, Darren Stuart Ryder

Theses: Doctorates and Masters

The development and local distribution of organic soils in Australia have been poorly documented. Within Western Australia, conditions conducive to the accumulation of organic matter are geographically restricted and generally occur in coastal and/or forested landscapes. An extensive system of wetlands with peal soils occurs in the Muir-Unicup region in the far south west of Western Australia. Bokarup Swamp, Kodjinup Swamp and Noobijup Lake are representative of the wetlands occurring in this region. They arc shallow (

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The Role Of Benthic Macroalgae In Sediment-Water Nutrient Cycling In The Swan-Canning Estuarine System, Western Australia, Helen Lee Astill Jan 2000

The Role Of Benthic Macroalgae In Sediment-Water Nutrient Cycling In The Swan-Canning Estuarine System, Western Australia, Helen Lee Astill

Theses: Doctorates and Masters

This study documented the macroalgal assemblages of the Swan-Canning Estuarine System (SCES) over a two year period, and the influences of several environmental parameters on the assemblages. In addition, the Impacts of unattached macroalgal accumulations on benthic nutrient fluxes and microbial communities were investigated. Benthic macroalgal assemblages and physico-chemical regimes were monitored in the SCES, to determine temporal and spatial changes in macroalgal communities and the influence of environmental factors in these changes. Physico-chemical regimes demonstrated strong seasonal changes, which revolved around the onset and cessation of freshwater flows in winter (May to September). In the months after freshwater flows, …

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Factors Affecting The Recruitment Of Riparian Vegetation On The Ord And Blackwood Rivers In Western Australia, Neil Pettit Jan 2000

Factors Affecting The Recruitment Of Riparian Vegetation On The Ord And Blackwood Rivers In Western Australia, Neil Pettit

Theses: Doctorates and Masters

This thesis provides baseline information on the ecological processes involved in the recruitment and regeneration of riparian vegetation. As there has been a paucity of basic ecological studies on riparian vegetation in Australia, the project is broad in scope, and gives a general picture of the factors influencing, the regeneration of riparian vegetation and provides a starting point for more detailed work. The project focuses on factors determining recruitment events and the life history traits of particular species in a river in the cool temperate zone of south western Australia (Blackwood River) and on a river in the dry tropics …

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Locational Factors Determining The Distribution Of Nesting Sites For A Colony Of Wedge-Tailed Shearwaters, Puffinus Pacificus, On West Wallabi Island, Houtman Abrolhos, Western Australia, Julie Davis Jan 1998

Locational Factors Determining The Distribution Of Nesting Sites For A Colony Of Wedge-Tailed Shearwaters, Puffinus Pacificus, On West Wallabi Island, Houtman Abrolhos, Western Australia, Julie Davis

Theses : Honours

West Wallabi Island in the Houtman Abrolhos, Western Australia, provides significant breeding habitat for the largest colony of Wedge-tailed Shearwaters, Puffinus pacificus, in the Eastern Indian Ocean. The Department of Conservation and Land Management (CALM) surveyed the Island in 1992 and estimated the population to be in excess of 1,117,000 pairs of breeding birds. Recent proposals to open the Abrolhos area to a larger number of visitors has identified the need for more detailed investigations into the relationship of birds and habitat. An understanding of this relationship provides a means of determining the ways in which populations will respond to …

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Microhabitat Use By Gilbert's Potoroo (Potorous Tridactylus Gilbertii Gould) In Relation To Vegetation Associations And Ground Cover, S. Vetten Jan 1996

Microhabitat Use By Gilbert's Potoroo (Potorous Tridactylus Gilbertii Gould) In Relation To Vegetation Associations And Ground Cover, S. Vetten

Theses : Honours

Gilbert's potoroo has been rediscovered 120 years after it was believed to have become extinct. In 1994 the presence of Gilbert's potoroo was confirmed at Two Peoples Bay Nature Reserve, near Albany, and since that time the need for a detailed understanding of the biology and behaviour of the species has become urgent. An understanding of the habitat requirements of the species will aid in its recovery from its present critically endangered status and will act as a guide for future management decisions concerning translocations of new populations into other areas. The present study was conducted at Two Peoples Bay …

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The Near-Shore, Soft-Substrate Bivalves Of The Swan Estuary: An Assessment Of Their Use As Biological Indicators, Graham Bailey Jan 1994

The Near-Shore, Soft-Substrate Bivalves Of The Swan Estuary: An Assessment Of Their Use As Biological Indicators, Graham Bailey

Theses : Honours

The soft-substrate bivalves of the Swan Estuary were evaluated for their suitability as biological indicators. The major requirement of a biological indicator is that a response to changing conditions can be shown. Demonstrating that bivalve community and populations respond to changing environmental conditions within The Estuary would fulfill this criteria. To make this assessment the study conducted a quantitative sampling program which established the current structure of the near-shore soft-substrate bivalve community and this was compared with the community established in 1973-74. To evaluate the predictive potential of bivalve structure as an indicator, major environmental conditions in the Estuary were …

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