Table 10 . Summary of current and past research and management program efforts focused on identifying |
sources and processes of sediments and associated particulate nutrients in the BBB catchment . |
Project |
Project lead |
Geographic coverage |
Timing |
Brief description |
Reference |
NESP Project 2.1.4 : Gully remediation in GBR rangelands
NESP Project 3.1.7 : Reducing sediment loads to the GBR : developing optimal approaches for treating alluvial and gully erosion
RP128G Bioavailable Nutrients Project ( Phases 1 and 2 )
NESP Project 2.1.5 / AdvQld Fellowship – Tracing BKN plume & resuspension trap sediment to catchment source
National Landcare Programme : Mapping and monitoring gullying processes in Great Barrier Reef natural resource management regions
NESP Project 2.1.10 Gully erosion and rehabilitation scoping project
CSIRO
Griffith Uni ( GU ) ( DSITI , GA , QLD Gov Innovation Proj )
DSITI ( GU , TropWATER , JCU )
TropWATER , JCU ( DSITI , GU , CSIRO )
CSIRO , DSITI
Griffith Uni
Gully scale sites - small linear hillslope gullies
( Bogie , Don , Upper Burdekin )
Gully scale sites – large alluvial gullies ( Lower Bowen )
Representative soil samples and tributary sites
Bowen focus ( doesn ’ t include Bogie ).
Only tributary sites represented on map .
Entire BKN , with Bowen focus .
GBR catchment with a case study in the Bowen catchment
Bowen catchment
Current
Current
Current – Phase 2
Current and data collected 2004- 2012
-evaluate impact of gully remediation options to underpin future investor , stakeholder and public confidence in the impact of erosion control programmes on ( i ) water quality ( ii ) project costeffectiveness and ( iii ) agricultural production
-gully erosion control trials within high per-hectare sediment erosion areas of Bowen / Upper Burdekin catchments
-test the effectiveness of rehabilitating complete alluvial gully complexes using suite of most appropriate techniques for individual sites -develop the partnerships and the institutional framework for implementing large scale innovative rehabilitation works which aim to directly reduce sediment supply from the large alluvial gullies on the lower Bowen River
- determine best indicators of bioavailable particulate nutrients that explain algal and diatom growth in freshwater and marine conditions and - that can be used for monitoring , modelling and research . -Indicators will be selected using a range of key soil types , erodibilities , erosion processes ( surface and subsurface ) and land uses ( grazing , dairy , cane , banana and forest ) from the Bowen and Johnstone catchments to ensure their applicability and reliability . - provide preliminary information on the limiting nutrient ( i . e ., C , N or P ) for algal communities along a freshwater to marine gradient .
-characterise and trace the origin ( s ) and fate of river flood plume and resuspension trap fine sediment , which reduces GBR photic depth and water clarity -enable direct spatial targeting of the sources of this material -improve understanding of sediment and nutrient transformations that occur as fine clay-sized sediment moves from ‘ catchment to reef ’ ie . development of organic-rich sediment floc that affect health of coral reefs and seagrass -developing new clay mineral-geochemical tracing techniques for GBR catchment sediment sourcing
-Assessment of digital aerial photogrammetry for mapping and monitoring of gully erosion processes in the GBR NRM regions . -High resolution ortho-rectified images , digital surface models and associated water flow maps to inform landholders , NRM groups and researchers in identifying locations of high erosion risk requiring evaluation , monitoring or intervention . -Documentation of specifications required for future air photo capture to enable digital surface model generation at appropriate resolutions for gully mapping and monitoring at other locations across Australia .
2016 - aims to draw upon the mine site rehabilitation experience and expertise , applying and adapting mine rehabilitation approaches in combination with more traditional gully management approaches to the rehabilitation of alluvial gullies .
Builds on gully erosion field studies , Upper Burdekin ( Wilkinson et al . 2014 , 2015a )
Builds on plotscale trials , Normanby catchment ( Brooks et al 2016 , Shellberg & Brooks , 2013 )
Burton et al . 2015 ( Phase 1 Report )
Bainbridge et al . 2012 ; 2016 ; Lewis et al . 2014
Brooks et al . 2016 NESP TWQ Hub Communique 1
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