A Characterisation of Sediment Nutrient Transport and Depositional Dynamics in the Lake Cootharaba Catchment Post European Settlement

Krystina Lamb; Peter G Davies; Vanessa Moscato; Peter R Brooks; Neil W Tindale

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A Characterisation of Sediment Nutrient Transport and Depositional Dynamics in the Lake Cootharaba Catchment Post European Settlement

Conference paper

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A Characterisation of Sediment Nutrient Transport and Depositional Dynamics in the Lake Cootharaba Catchment Post European Settlement

Krystina Lamb, Peter G Davies, Vanessa Moscato, Peter R Brooks and Neil W Tindale

Proceedings of the 2011 Queensland Coastal Conference, pp.1-6

Queensland Coastal Conference: Ancient Knowledge Contemporary Innovation, 2011 (Cairns, Australia, 19-Oct-2011–21-Oct-2011)

Queensland Coastal Conference

2011

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Abstract

Environmental Science and Management

Lake Cootharaba catchement

European settlement

sediment dynamics

nutrient dynamics

Noosa River

waterway management

The Noosa River and catchment, including the Upper Noosa River and Kin Kin Creek which drain into Lake Cootharaba, is a valuable and relatively pristine ecosystem that is often used as a benchmark for healthy coastal waterways in South East Queensland. A combination of sediment analytical techniques were used to characterise sediment and nutrient dynamics in Lake Cootharaba, including particle size analysis by laser diffraction, element and nutrient analysis using ICP-OES and radioisotope analyses incorporating Lead-210 tracing. Combinations of these analyses were used to determine changes to sediment profile and deposition since human settlement in the Kin Kin and Cooloothin Creek catchment areas. The data suggest that Kin Kin Creek contributes higher sediment load than the larger Upper Noosa River, particularly after heavy rain events. Major and minor elemental analysis of suspended sediments show that there is little variation in the geological profile across the catchment, though final results from elemental analysis of bottom sediments are still pending. Preliminary analysis also shows that the suspended sediments are the main contributor of nutrients to the Noosa River, rather than dissolved nutrients. This study is part of a larger study of the Noosa River Catchment area to help determine better land and water management practices.

Details

Title: A Characterisation of Sediment Nutrient Transport and Depositional Dynamics in the Lake Cootharaba Catchment Post European Settlement
Authors: Krystina Lamb (Author) - University of the Sunshine Coast - Faculty of Science, Health and Education
Peter G Davies (Author) - University of the Sunshine Coast - Faculty of Science, Health and Education
Vanessa Moscato (Author) - University of the Sunshine Coast - Faculty of Science, Health and Education
Peter R Brooks (Author) - University of the Sunshine Coast - Faculty of Science, Health and Education
Neil W Tindale (Author) - University of the Sunshine Coast - Faculty of Science, Health and Education
Contributors: John Gunn (Editor)
Greg Stuart (Editor)
Neil W Tindale (Editor)
Sue Sargent (Editor)
Publication details: Proceedings of the 2011 Queensland Coastal Conference, pp.1-6
Conference details: Queensland Coastal Conference: Ancient Knowledge Contemporary Innovation, 2011 (Cairns, Australia, 19-Oct-2011–21-Oct-2011)
Publisher: Queensland Coastal Conference
Date published: 2011
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; UniSC Fraser Coast; School of Science, Technology and Engineering; Centre for Bioinnovation
Language: English
Record Identifier: 99451031202621
Output Type: Conference paper

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