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Sustainable Rivers Audit Macroinvertebrate Theme Project: SIGNAL Project Final Report

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Sustainable Rivers Audit Macroinvertebrate Theme Project: SIGNAL Project Final Report MACROINVERTEBRATE THEME PILOT AUDIT TECHNICAL REPORT Sustainable Rivers Audit Murray-Darling Basin Commission May 2004 Sustainable Rivers Audit Pilot Audit – Macroinvertebrate Theme Technical Report i Sustainable Rivers Audit Pilot Audit – Macroinvertebrate Theme Technical Report ii Foreword The Sustainable Rivers Audit is being developed to benchmark river health across the Murray- Darling Basin and provide information to guide the long term management of riverine resources in the Basin Development of the Audit has been a staged process with the initial focus on obtaining expert advice on the design of an effective Audit. This advice was given effect through establishing a Pilot Audit in four valleys in the Basin: the Ovens in Victoria, the Lachlan in New South Wales, the Condamine in Queensland and the Lower Murray in South Australia. The purpose of the Pilot Audit was to trial the design recommended by the Cooperative Research Centre for Freshwater Ecology encapsulating five thematic sets of indicators: fish, aquatic macroinvertebrates, hydrology, water quality and physical habitat. The Pilot enabled the proposed methods to be evaluated, confirmed the indicators that could be used in a regular Audit and allowed the costs and logistics of a Basin wide Audit to be estimated. This report covers all the technical aspects of the Pilot Audit investigations for the aquatic macroinvertebrate theme. The focus of this report is on method development. However, the resulting river health assessments for the four Pilot valleys are also summarised. The Pilot Audit represents the largest effort in integrated river health monitoring in the Basin to date; with coordinated activity by each of the partner governments utilizing consistent indicators and methods at the same spatial and temporal scales. I believe that the knowledge contained in this and companion documents represent a significant contribution to substantially improving the health of the river systems of the Murray-Darling Basin. Scott Keyworth Director Rivers and Industries Unit May 2004 Sustainable Rivers Audit Pilot Audit – Macroinvertebrate Theme Technical Report iii Acknowledgements The implementation of the macroinvertebrate theme in the Pilot was overseen by the Sustainable Rivers Audit Taskforce and technical experts who participated in the various workshops and teleconferences, including Bruce Chessman (New South Wales Department of Infrastructure, Planning and Natural Resources, DIPNR), Bruce Gray (Commonwealth Department of Environment and Heritage, DEH) , Eren Turak (New South Wales Department of Environment and Conservation, DEC), Leon Metzeling (Victorian Environmental Protection Authority, EPA), Peter Goonan (South Australian Environmental Protection Authority, SA EPA), Richard Norris (Cooperative Research Centre for Freshwater Ecology, CRCFE) and Satish Choy (Queensland Department of Natural Resources, Mines and Energy, NRM&E). Thank you to all the people involved in the field sampling of macroinvertebrate populations. In particular, the following people provided the macroinvertebrate data to the Commission from each state: Nicole Barbee and Liza Miller (Victoria EPA), Chris Madden (South Australia Australian Water Quality Centre, AWQC) and Peter Goonan (SA EPA), Glenn Johnstone (DEC), Lisa Thurtell (DIPNR), Peter Negus (NRM&E). Eren Turak (DEC) constructed AUSRIVAS models for the Lachlan catchment and Bruce Chessman (DIPNR) constructed Filters models for the Ovens and Lachlan catchments. Reference site data from the National River Health Program (NRHP) database was provided by Craig Richardson from Environmental Research Information Network (ERIN). Two separate reports were commissioned as part of the Pilot from the NSW EPA (now DEC) (Johnstone et al., 2003) and the CRCFE (Liston et al., 2003). Photos were provided by Glenn Moller (NRM&E), Glenn Johnstone and Gunther Theischinger (DEC). Additional information on rare macroinvertebrate taxa collected in the Pilot was provided by Gunther Theischinger (DEC), Chris Madden (AWQC) and Adrian Pinder ( Western Australia Department of Conservation and Land Management, CALM). General development and implementation of the Pilot was guided by the SRA Taskforce, the Commission office project team and the Independent Sustainable Rivers Audit Group (ISRAG). Members of the Taskforce during the Pilot project were: Kylee Wilton (DIPNR), Klaus Koop and Peter Scanes (DEC), Paul Wilson (Department of Sustainability and Environment, DSE), Tiffany Inglis and Danny Simpson (South Australia Department of Water Land and Biodiversity Conservation , DWLBC), Brian Bycroft (NRM&E), Terry Loos and Paul Clayton (Queensland Environmental Protection Agency, Qld EPA), Peter Donnelly (Environment ACT), Jean Chesson (BRS), Martin Shaffron and Kylie Peterson (Commonwealth Department of Heritage and Environment, DEH). Members of ISRAG are: Peter E. Davies (Chair), Terry Hillman, Keith Walker and John Harris. ISRAG and the Sustainable Rivers Audit Project Team developed the expert rules to integrate the individual indicators into a single assessment, with assistance of Steve Carter (Environmental Dynamics). The results of the macroinvertebrate theme were documented by the Sustainable Rivers Audit Project Team in this report. Data analysis was undertaken by Wayne Robinson (University of Sunshine Coast, USC) with assistance of ISRAG and Steve Carter for the expert rules. The report was primarily written by Julie Coysh with assistance from Project Manager Jody Swirepik and project team members Mark Lintermans, Damian Green and Frederick Bouckaert. Maps were produced by Nick Bauer. Assistance with cover design and print colour quality was provided by Viv Martin. Assistance was also provided by the Bureau of Rural Sciences in compiling the Executive Summary of this report. Draft versions of the report were reviewed by various experts from relevant state agencies. Sustainable Rivers Audit Pilot Audit – Macroinvertebrate Theme Technical Report iv Acronyms and abbreviations used in this report AUSRIVAS Australian River Health Assessment AUSRIVAS OE Australian River Health Assessment, Observed/Expected ratio, used as an indicator of river health AWQC Australian Water Quality Centre, South Australia Basin Murray-Darling Basin BRS Bureau of Rural Sciences CALM Department of Conservation and Land Management, Western Australia CAP The Cap on diversions, agreed to in 1995 CRCFE Cooperative Research Centre for Freshwater Ecology DEC New South Wales Department of Environment and Conservation DEH Commonwealth Department of Environment and Heritage (includes Environment Australia) DIPNR Department of Infrastucture, Planning and Natural Resources, New South Wales DSE Department of Sustainability and Environment, Victoria DWLBC Department of Water, Land and Biodiversity Conservation, South Australia EMAP Environmental Monitoring Assessment Protocol, USA EPA. EPA Environmental Protection Authority (NSW EPA and VIC EPA) EPT Ephemeroptera Plecoptera Trichoptera Macroinvertebrate indicator using the ratio of EPT (sensitive taxa) divided by Chironomidae (tolerant taxa) ERIN Commonwealth Environment Research and Information Network FNARH First National Assessment of River Health FPZ Functional Process Zone (an area of the river comprised of several reaches with similar geomorphologic and ecological functions) FPZ’s are aggregated to VPZ’s (see below) IBI Index of Biotic Integrity An index originally developed for fish but also applied to macroinvertebrates, using a number of indicators which are compared to an internally generated reference condition or benchmark based on least disturbed sites. ISC Victorian Index of Stream Condition ISRAG Independent Sustainable Rivers Audit Group Expert group of ecologists undertaking the Audit for the SRA program MDBC Murray-Darling Basin Commission MDBMC Murray-Darling Basin Ministerial Council MRHI Monitoring River Health Initiative NLWRA National Land and Water Resources Audit NRHP National River Health Program Pilot The Pilot project for the Sustainable Rivers Audit RIVPACS River Invertebrate Prediction and Classification Scheme. The UK stream assessment predictive model, using observed/expected taxa SA EPA South Australian Environmental Protection Authority SEPP State Environmental Protection Policy SIGNAL (standalone) Stream Invertebrate Grade Number- Average Level A macroinvertebrate index designed to measure water quality, based on presence absence data of macroinvertebrate taxa SIGNAL OE 50 or Stream Invertebrate Grade Number- Average Level SIGNAL OE Observed/Expected at 50% SIGNAL OE probability level – AUSRIVAS indicator SIGNAL OE0 Stream Invertebrate Grade Number- Average Level SIGNAL OE Observed/Expected at 0% probability level – AUSRIVAS indicator SIGNAL OEA Stream Invertebrate Grade Number- Average Level SIGNAL OE Observed/Expected at 0% probability level abundance weighted – AUSRIVAS indicator SRA Sustainable Rivers Audit SR-MI Sustainable Rivers Macroinvertebrate Index Overal macroinvertebrate indicator - SRA (Pilot) project SR-MIoe Sustainable Rivers Macroinvertebrate Index Observed/Expected AUSRIVAS OE macroinvertebrate indicator - SRA (Pilot) project SR-MIr Sustainable Rivers Macroinvertebrate Index Richness Taxon Richness macroinvertebrate indicator - SRA (Pilot) project SR-MIs Sustainable Rivers Macroinvertebrate Index SIGNAL SIGNAL (standalone) macroinvertebrate indicator - SRA (Pilot) project USC University of the Sunshine Coast Victorian EPA Victorian Environmental Protection Authority VPZ Valley Process Zone:
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