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dc.contributor.authorRoberts, Melanie E
dc.contributor.authorEllis, Robin
dc.description.abstractThe world heritage listed Great Barrier Reef (GBR) is under threat. After climate change, water quality is recognised as the greatest stress on the reef. Sediment eroded from the catchments is transported into the reef lagoon, contributing to poor water quality. Poor water quality is linked to loss of habitat, coral death, reduced coral recruitment, algal blooms, and Crown of Thorns starfish outbreaks. The Queensland Government, in collaboration with the Australian Government under the joint Reef 2050 Water Quality Improvement Plan, undertakes a regular exercise to report on the health of the GBR and to track progress across a broad range of metrics, including water quality. This exercise comprises a combination of modelling and monitoring activities. Queensland Government periodically review their modelling framework and have identified areas for model improvement. One area identified is how the effects of changed land management practices are modelled. Presently, characteristics of recovery are empirically modelled, however parameterisation is challenged by a sparsity of data. The temporal characteristics of recovery are not presently explicitly accounted for within the modelling process. This study explores the variation in modelled end-of-system sediment loads for an exemplar subcatchment as a result of employing varying temporal signatures of recovery for grazed lands. The purpose of this study is to identify whether the modelled end-of-system sediment loads are sensitive to the time-signature of recovery, to inform how land management practices are included in the models. The results show that the time-signature of recovery can have significant effects on the end-of-system sediment loads where changes in land management practices coincide with local hot-spots of sediment generation. Consideration of the temporal dynamics of erosion reduction due to different intervention strategies is essential to provide the best opportunity to meet water quality targets in the GBR lagoon.
dc.publisherWIT Press
dc.relation.ispartofconferencename10th International conference on river basin management including all aspects of hydrology, ecology, environmental management, flood plains and wetlands
dc.relation.ispartofconferencetitleWIT Transactions on Ecology and the Environment
dc.relation.ispartoflocationAlicante, Spain
dc.subject.fieldofresearchEnvironmental Engineering
dc.titleEffects of temporal variation in sediment reduction following improved land management practices on end-of-system delivery: a modelling investigation of a grazed catchment in Queensland, Australia
dc.typeConference output
dc.type.descriptionE1 - Conferences
dcterms.bibliographicCitationRoberts, ME; Ellis, R, Effects of temporal variation in sediment reduction following improved land management practices on end-of-system delivery: a modelling investigation of a grazed catchment in Queensland, Australia, 10th International Conference on River Basin Management Including all Aspects of Hydrology, Ecology, Environmental Management, Flood Plains and Wetlands, 2019, 234 (2019), pp. 9-20
gro.rights.copyrightSelf-archiving of the author-manuscript version is not yet supported by this journal. Please refer to the journal link for access to the definitive, published version or contact the author for more information.
gro.hasfulltextNo Full Text
gro.griffith.authorRoberts, Melanie E.

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    Contains papers delivered by Griffith authors at national and international conferences.

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