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A8 Baseline Aquatic Ecosystem Survey Wet Season (WRM 2016) Mesa A / Warramboo Project Baseline Aquatic Ecosystem Survey Wet Season Sampling 2016 December 2016 Mesa A / Warramboo Baseline Aquatic Ecosystem Survey – Wet Season Sampling 2016 Mesa A / Warramboo Project Baseline Aquatic Ecosystem Survey Wet Season Sampling 2016 Prepared for: Astron Environmental Services Pty Ltd 129 Royal Street, East Perth, WA 6004 T: +61 8 9421 9600 E: [email protected] by: Wetland Research & Management 16 Claude Street, Burswood, WA 6100 T: +61 8 9361 4325 E: [email protected] Final Report 13 December 2016 Frontispiece (left to right): Warramboo Creek ephemeral site WARDS6 (May 2016); ostracods (seed shrimp) which emerged from the rehydrated sediment sample taken at WARDS6 (May 2016); Warramboo Creek site WARUS2 in flood (May 2016). ii Mesa A / Warramboo Baseline Aquatic Ecosystem Survey – Wet Season Sampling 2016 Study Team WRM Project management: Jess Delaney Field work: Adam Harman, Emma Thillainath and Fintan Angel Macroinvertebrate identification: Kim Nguyen, Simon Ward and Bonita Clark Macroinvertebrate QA/QC: Alex Riemer and Chris Hofmeester Microinvertebrate rehydration and identification: Dr Russell Shiel, University of Adelaide Report: Bonita Clark Internal review: Susan Davies External Specialist Taxonomists Dr Don H. Edward, The University of Western Australia (Chironomidae) Dr Russell Shiel, Adelaide University (microinvertebrates and sediment rehydration) Recommended Reference Format WRM (2016). Mesa A and Warramboo Project Baseline Aquatic Ecosystem Surveys - Wet Season Sampling 2016. Unpublished report to Astron Environmental Services Pty Ltd by Wetland Research & Management. December 2016. Acknowledgements WRM thank Mathew Love, Megan Stalker and Melissa Ford for overall management of the project on behalf of Astron Environmental Services Pty Ltd (Astron). Dr Stuart Pearse (Astron), Fiona Bell (RTIO) and Jenny Carter (RTIO) are thanked for comments on the draft reports. Laboratory analyses of surface water quality samples collected by WRM were performed by ChemCentre, Bentley WA. Groundwater data were provided courtesy of Rio Tinto Pty Ltd. The authors acknowledge, and are very grateful to the Kuruma-Marthudunera Traditional Owners for sharing their stories, welcoming us to the land and assisting with sampling of the river pools. Disclaimer This document was based on the best information available at the time of writing. While Wetland Research & 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 reflect those of Astron Environmental Services Pty Ltd or Rio Tinto Pty Ltd. 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 WRM and Rio Tinto Pty Ltd. Document history Date final Date Version Reviewed by comments /data submitted received Draft v0 13/08/2016 Susan Davies (WRM, internal review) 16/08/2016 Draft v1 18/08/2016 Stuart Pearse (Astron) 30/08/2016 01/09/2016 Fiona Bell (RTIO), Jenny Carter (RTIO) 15/11/2016 Draft v2 17/11/2016 John Trainer (Astron), Stuart Pearse (Astron), Fiona Bell (RTIO) 07/12/2016 Final 13/12/2016 iii Mesa A / Warramboo Baseline Aquatic Ecosystem Survey – Wet Season Sampling 2016 CONTENTS EXECUTIVE SUMMARY ............................................................................................................................. vi 1 INTRODUCTION .................................................................................................................................. 1 1.1 BACKGROUND ................................................................................................................................. 1 1.1.1 Rationale for sampling components of aquatic fauna ...................................................... 3 1.1.2 Legislative framework....................................................................................................... 4 1.1.3 Other relevant policy - ANZECC/ARMCANZ (2000) Guidelines ...................................... 5 1.2 SCOPE OF WORKS FOR CURRENT STUDY ........................................................................................ 6 2 SURVEY AREA .................................................................................................................................... 7 2.1 CLIMATE ......................................................................................................................................... 7 2.2 HYDROGEOLOGY ............................................................................................................................ 7 3 REVIEW OF PREVIOUS AQUATIC FAUNA SURVEYS .................................................................... 9 3.1 MICROINVERTEBRATES ................................................................................................................. 12 3.2 HYPORHEIC FAUNA ....................................................................................................................... 13 3.3 MACROINVERTEBRATES ................................................................................................................ 14 3.4 DROUGHT RESISTANT FAUNA AND PREVIOUS SEDIMENT REHYDRATION STUDIES ............................ 17 3.5 FISH ............................................................................................................................................. 18 3.6 OTHER FAUNA .............................................................................................................................. 20 3.6.1 Turtles ............................................................................................................................ 20 3.6.2 Frogs .............................................................................................................................. 20 3.7 SUMMARY OF KNOWN SPECIES OF CONSERVATION AND/OR SCIENTIFIC INTEREST ........................... 21 4 METHODS .......................................................................................................................................... 23 4.1 GENERAL ..................................................................................................................................... 23 4.2 LICENCES ..................................................................................................................................... 23 4.3 SAMPLING DESIGN AND SITES ....................................................................................................... 23 4.4 WATER QUALITY............................................................................................................................ 25 4.4.1 Comparison against ANZECC/ARMCANZ guidelines ................................................... 25 4.4.2 Comparison against groundwater quality ....................................................................... 26 4.5 HABITAT CHARACTERISTICS .......................................................................................................... 26 4.6 SEDIMENT COLLECTION AND REHYDRATION OF INVERTEBRATE RESTING STAGES ............................ 27 4.7 MICROINVERTEBRATES ................................................................................................................. 28 4.8 HYPORHEOS ................................................................................................................................. 29 4.9 MACROINVERTEBRATES ................................................................................................................ 29 4.10 FISH ............................................................................................................................................. 30 4.11 DATA ANALYSIS ............................................................................................................................ 30 4.12 SURVEY LIMITATIONS .................................................................................................................... 30 5 RESULTS AND DISCUSSION ........................................................................................................... 32 5.1 WATER QUALITY ........................................................................................................................... 32 5.1.1 General ........................................................................................................................... 32 5.1.2 Comparison against ANZECC/ARMCANZ (2000) default guidelines ............................ 32 5.1.3 Comparison against groundwater quality ....................................................................... 33 5.2 MICROINVERTEBRATE FAUNA ........................................................................................................ 37 5.2.1 Taxonomic composition.................................................................................................. 37 5.2.2 Comparison against previous studies ............................................................................ 37 5.2.3 Conservation/scientific significance of microinvertebrates............................................. 38 5.3 HYPORHEIC FAUNA ......................................................................................................................
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