The environmental history of Longneck Lagoon was reconstructed by analysing 15 sediment cores collected between 22 April, 1992 and 29 August, 1995. Longneck Lagoon is a shallow, man-modified lake situated in the north-western part of Sydney in New South Wales, Australia, in the Hawkesbury River floodplain. It has undergone a considerable change over recent years and at the end of the study was reported to have turbid water and no floating leaved plants or submerged aquatic plants. The hypothesis of this study was that vertical patterns in sediment characteristics can be related to biological, physical or chemical changes that have taken place within Longneck Lagoon and its catchment area. Assessment of inter-core variation within one area of the lagoon and between different areas was carried out and is highly recommended to others who may wish to conduct similar studies elsewhere. Restoration/regeneration of the previous diverse aquatic plant flora, associated with variable water depth in the pre-weir condition, would require the removal/modification of the weir, possibly reduction in the nutrient income to the lake, and, potentially, addressing mobilisation and internal cycling of accumulated nutrients which have accreted within the system. / Doctor of Philosophy (PhD)

Thesis (Ph.D.)--University of Western Sydney, Hawkesbury, 2000. / "A thesis submitted in completion of the degree of Doctor of Philosophy, Department of Social Ecology, University of Western Sydney Hawkesbury." "November 2000." Bibliography : leaves 406-413.

Thesis (M.Sc.) -- Hawkesbury Agricultural College, 1985. / "A thesis submitted to Hawkesbury Agricultural College in partial fulfilment for the Degree of Master of Applied Science."

Thesis (Ph.D.) -- University of Western Sydney, Hawkesbury, 2000. / "Thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy" Bibliography : p. 252-267.

Thesis (M. Sc.) (Hons.) -- University of Western Sydney, Hawkesbury, 2000. / Includes bibliographical references (leaves 136-152).

Thesis (M.Comm. (Hons.)) -- University of Western Sydney, 1998. / Bibliography : leaves 178-183.

Thesis (Ph.D.)--University of Western Sydney, Hawkesbury, 2000. / "A thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy, Faculty of Health, University of Western Sydney."

Thesis (Ph.D.)--University of Western Sydney, Hawkesbury, 2000. / "Submitted in fulfilment of the requirements for the Degree of Doctor of Philosophy in the Department of Social Ecology in the University of Western Sydney". Bibliography : p. 462-482.

Thesis (Ph.D.)--University of Western Sydney, Hawkesbury, 1999. / "A Thesis submitted to the Faculty of Science and Technology in fulfilment of the requirements for the Degree of Doctor of Philosophy". "November 1999". Bibliography : leaves 147-155.

Water recycling schemes are increasingly being implemented across Australia as an effective means of converting wastewater into a valuable resource. There is currently a lack of specific guidelines for the monitoring of groundwater resources associated with these schemes. This is despite it being widely acknowledged that a monitoring system is a fundamental component of a scheme, due to the risk of altering the hydrogeological processes and resource devaluation. The aim of this research was to address this information gap, by developing guidelines that provide a platform for the continuous improvement in groundwater monitoring systems for recycling schemes. To achieve the stated aim, an action research strategy formed the methodological approach for the implementation of the objectives. Existing guidelines for monitoring systems were reviewed, consolidated and refined, in consultation with industry expertise. The developed guidelines were then verified through the implementation of a case study at the Hawkesbury Water Recycling Scheme (HWRS), with the resulting information providing for a preliminary characterisation of the resources. Designed on current best practice, and to meet statutory requirements, the guidelines addressed the identified information gap. The research recommends the integration of groundwater monitoring systems into the environmental management system for recycling schemes, to provide for continuous refinement through the interpretation of the knowledge base developed in previous cycles. Adoption of this practice will initiate improved decision making and management processes, and provide for future resource protection and enhancement. / Master of Science (Hons)