Munglinup Graphite Project Munglinup River: Baseline Water
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Munglinup Graphite Project Munglinup River Baseline Water Quality & Aquatic Fauna Survey April 2018 Final Report August 2018 MRC Munglinup River Baseline Aquatic Fauna Survey Munglinup Graphite Project Munglinup River Baseline Water Quality & Aquatic Fauna Survey April 2018 Prepared for: MRC Graphite Pty Ltd (MRC) 39-43 Murray Road North, Welshpool WA 6106 by: Wetland Research and Management 16 Claude Street, Burswood, WA 6100 Ph +61 8 9361 4325 e-mail: [email protected] Final Report August 2018 Frontispiece: A pool along the Munglinup River (sampling site MRD4). 2 MRC Munglinup River Baseline Aquatic Fauna Survey Study Team Project Management: Adam Harman Report: Adam Harman & Fintan Angel Internal Review: Andrew Storey Field Work: Andrew Storey and Fintan Angel Macroinvertebrate Identification: Kim Nguyen and Bonita Clark Macroinvertebrate QA/QC: Chris Hofmeester Map compilation: Emma Thillainath Acknowledgements This project was undertaken by Wetland Research and Management (WRM) for Mineral Commodities Ltd (MRC). WRM would like to thank all MRC staff, particularly Adriaan du Toit (Exploration Manager) and Jordan Serve (Field Technician), who assisted in various capacities during fieldwork. WRM would also like to thank Sophie Monaco from Integrate Sustainability Pty Ltd for project management and review of the Draft Report. Water samples were analysed through the Chemistry Centre of Western Australia (Environmental Chemistry Section). Recommended Reference Format WRM (2018). Munglinup Graphite Project. Munglinup River. Baseline Water Quality & Aquatic Fauna Survey. April 2018. Unpublished report by Wetland Research and Management to MRC Graphite Pty Ltd. August 2018. Disclaimer This document was based on the best information available at the time of writing. While Wetland Research and Management (WRM) has attempted to ensure that all information contained within this document is accurate, WRM does not warrant or assume any legal liability or responsibility to any third party for the accuracy, completeness, or usefulness of any information supplied. The views and opinions expressed within are those of WRM and do not necessarily represent MRC policy. No part of this publication may be reproduced in any form, stored in any retrieval system or transmitted by any means electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of MRC and WRM. Document history Version Submitted Reviewed by Date Draft v0 28/06/2018 Andrew Storey (WRM) 02/07/2018 Draft v1 03/07/2018 Andrew Storey (WRM) 03/07/2018 Draft v2 04/07/2018 Sophie Monaco (Integrate Sustainability) 25/07/2018 Draft v3 26/07/2018 Sophie Monaco (Integrate Sustainability) 27/08/2018 Final 31/08/2018 3 MRC Munglinup River Baseline Aquatic Fauna Survey TABLE OF CONTENTS TABLE OF CONTENTS ............................................................................................... 4 1 INTRODUCTION ................................................................................................ 7 1.1 Project Background 7 1.2 Legislative framework 7 1.3 Regional setting 8 1.4 Climate 8 1.5 Desktop review 10 1.6 Scope of works 10 2 METHODS ........................................................................................................ 11 2.1 Sites and Sampling Design 11 2.2 Field sampling 13 2.2.1 Water quality 13 2.2.2 Habitat characteristics 14 2.2.3 Macroinvertebrates 14 2.2.4 Fish and crayfish 15 2.2.5 Rakali (water rat) 15 2.2.6 Other vertebrate fauna 16 2.3 Data analysis 16 2.3.1 Assessment of conservation significance of fauna 16 2.3.2 Comparison to ANZECC/ARMCANZ trigger values 16 2.3.3 Univariate analysis 17 2.3.4 Multivariate analysis 17 3 RESULTS ......................................................................................................... 18 3.1 Habitat Characteristics 18 3.1.1 Substrate characteristics 18 3.1.2 Instream habitat characteristics 18 3.2 Water quality 18 3.2.1 General 18 3.2.2 Comparison against default guidelines 19 3.3 Macroinvertebrate fauna 24 3.3.1 Taxonomic composition and species richness 24 3.3.2 Ephemeroptera Plecoptera Trichoptera (EPT) taxa richness 25 3.3.3 Ecological Value and Conservation significance of macroinvertebrates 25 3.3.4 Patterns in macroinvertebrate community composition 26 3.4 Fish 29 3.4.1 Species composition and richness 29 3.4.2 Abundance 30 3.4.3 Length Frequency Analysis 30 3.5 Crayfish 33 3.6 Rakali (water rat) - Hydromys chrysogaster 34 3.7 Other vertebrate fauna 34 3.7.1 Turtles 34 3.7.2 Frogs 35 3.7.3 Avian fauna 35 4 DISCUSSION ................................................................................................... 36 4.1 Water quality 36 4.2 Macroinvertebrate fauna 36 4 MRC Munglinup River Baseline Aquatic Fauna Survey 4.3 Fish and crayfish 37 4.4 Other vertebrate fauna 38 5 CONCLUSION .................................................................................................. 39 6 RECOMMENDATIONS .................................................................................... 40 7 REFERENCES ................................................................................................. 41 APPENDICES ........................................................................................................... 44 Appendix 1. Site photographs 44 Appendix 2. ANZECC/ARMCANZ (2000) default trigger values 45 Appendix 3. Substrate and habitat data 48 Appendix 4. Macroinvertebrate fauna data 49 Appendix 5. Munglinup Literature Review 50 LIST OF TABLES, FIGURES AND PLATES FIGURES FIGURE 1. MAXIMUM AND MINIMUM MONTHLY TEMPERATURE FOR MUNGLINUP WEST TOGETHER WITH AVERAGE MAXIMA AND MINIMA FOR THE PERIOD 2002 – 2018 (DATA SUPPLIED BY CLIMATE SERVICES, BOM, PERTH). ...................................................................................................................................................................... 9 FIGURE 2. AVERAGE MONTHLY RAINFALL FOR MUNGLINUP WEST (2002 – 2018), MUNGLINUP MELALEUCA (1975 – 2013) AND MUNGLINUP RAVENSTHORPE (1901 – 2018) AND MUNGLINUP WEST (LAST 12 MONTHS) (DATA SUPPLIED BY CLIMATE SERVICES, BOM, PERTH). ......................................................................................... 9 FIGURE 3. LOCATION OF AQUATIC FAUNA SAMPLING SITES ON MUNGLINUP RIVER SAMPLED DURING THE APRIL 2018 SURVEY. .............................................................................................................................................. 12 FIGURE 4. COMPARISON OF DO, PH, EC AND TSS AMONGST ALL SITES SAMPLED ALONG THE MUNGLINUP RIVER. SOUTH-WEST (BLACK) AND SOUTH CENTRAL (BLUE) ANZECC/ARMCANZ (2000) DEFAULT 95% SPECIES PROTECTION LEVEL TVS ARE INDICATED FOR ALL PARAMETERS, WHERE AVAILABLE, WITH LOWER LIMITS OF THE TVS (DASHED LINE) SHOWN FOR PH AND DO AND EC.......................................................................... 20 FIGURE 5. COMPARISON OF NUTRIENT CONCENTRATIONS (N-NOX, NO3, N-TOTAL, P-TOTAL) AMONGST SITES ON THE MUNGLINUP RIVER. ANZECC/ARMCANZ (2000) SOUTH-WEST (BLACK) AND SOUTH CENTRAL (BLUE) SPECIES PROTECTION LEVEL TVS ARE PROVIDED. ............................................................................ 21 FIGURE 6. TOTAL BORON (MG/L) IN COMPARISON TO THE ANZECC/ARMCANZ (2000) DEFAULT TV’S FOR 95% SPECIES PROTECTION (DASHED LINE) AND 80% SPECIES PROTECTION (BLACK LINE). ................................... 22 FIGURE 7. TAXA RICHNESS (S = NUMBER OF SPECIES) RECORDED FROM MUNGLINUP RIVER APRIL 2018 ............. 24 FIGURE 8. ORDINATION PLOT (NMDS) OF MACROINVERTEBRATE LOG10 ABUNDANCE DATA COLLECTED FROM UPSTREAM AND DOWNSTREAM SITES ON THE MUNGLINUP RIVER 2018. SAMPLES ARE GROUPED WITHIN A GREEN CIRCLE BASED ON 50% SIMILARITY DETERMINED BY SIMPER. ....................................................... 28 FIGURE 9. SHADE PLOT OF AVERAGE LOG10 ABUNDANCE DATA OF TAXA RECORDED AT UPSTREAM AND DOWNSTREAM REACHES OF MUNGLINUP RIVER. DARKER SHADING EQUATES TO HIGHER AVERAGE LOG ABUNDANCE................................................................................................................................................. 28 FIGURE 10. LENGTH-FREQUENCY HISTOGRAMS FOR SWAN RIVER GOBY – MUNGLINUP RIVER, APRIL 2018. ...... 31 FIGURE 11. LENGTH-FREQUENCY HISTOGRAMS FOR COMMON JOLLYTAIL MINNOW – MUNGLINUP RIVER, APRIL 2018. ........................................................................................................................................................... 32 FIGURE 12. LENGTH-FREQUENCY HISTOGRAMS FOR WESTERN HARDYHEAD – MUNGLINUP RIVER, APRIL 2018. NOTE: NO FISH WERE CAUGHT AT MRU5. ................................................................................................... 33 PLATES PLATE 1. FIELD SAMPLING OF IN SITU WATER QUALITY USING WTW METERS. ..................................................... 13 PLATE 2. TWO FYKE NETS SET BACK TO BACK TO CAPTURE FISH MOVING UPSTREAM AND DOWNSTREAM AT SITE MRU5. ........................................................................................................................................................ 15 PLATE 3. COXIELLA SP. FOUND AT ALL SITES ON THE MUNGLINUP RIVER ............................................................. 26 PLATE 4. SYMPHITONEURIA WHEELERI, A COMMON EASTERN SOUTH COAST SPECIES, FOUND AT SITES BOTH UPSTREAM AND DOWNSTREAM ON MUNGLINUP RIVER................................................................................ 26 5 MRC Munglinup River Baseline Aquatic Fauna Survey PLATE 5. FISH SPECIES RECORDED FROM MUNGLINUP RIVER APRIL 2018. (FROM LEFT TO RIGHT)