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Fish assemblages in the Coorong A/Prof Qifeng Ye, SARDI Aquatic - PowerPoint PPT Presentation

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Mulloway Stock Assessment Report 2013/14 SUMMARY PRESENTATION Fish assemblages in the Coorong A/Prof Qifeng Ye, SARDI Aquatic Sciences Luciana Bucater, David Short and Neil Wellman Chris Bice, Brenton Zampatti and Jason Earl Coorong Sandy

  1. Mulloway Stock Assessment Report 2013/14 SUMMARY PRESENTATION Fish assemblages in the Coorong A/Prof Qifeng Ye, SARDI Aquatic Sciences Luciana Bucater, David Short and Neil Wellman Chris Bice, Brenton Zampatti and Jason Earl

  2. Coorong Sandy sprat fishes Black bream Smallmouthed hardyhead Congolli Greenback flounder Lamprey Yelloweye mullet Mulloway

  3. Fishes and Estuaries Diadromous Estuarine Marine Freshwater Adapted from Whitfield 1999

  4. Dynamic estuarine – lagoonal system • Flow • Connectivity  Salinity  Productivity

  5. Annual barrage flow Flood/flow Drought

  6. 2007 – 2010 Toad fish Australian salmon (drought) ‘Marine stragglers’ King george whiting Kelpfish Australian herring Australian anchovy

  7. Distribution Recruitment/Abundance 2500 16.0 14.0 12.0 10.0 8.0 2000 6.0 E Abundance (fish.hour -1 ) Discharge (GL.month -1 ) 4.0 2.0 1.0 1500 0.8 1000 0.6 0.4 500 NL 0.2 0.0 0 2006/07 2007/08 2008/09 2009/10 2010/11 2011/12 2012/13 2013/14 SL Drought Period Data: Bice & Zampatti

  8. 2010 – 2013 (flow) ‘Estuarine’ ‘Freshwater’ ‘Diadromous’ Congolli Lagoon goby Australian smelt ‘Marine migrant’ Mulloway Bony herring Sandy sprat Pouched lamprey

  9. Distribution Recruitment/Abundance 2500 16.0 14.0 12.0 10.0 8.0 2000 E 6.0 Abundance (fish.hour -1 ) Discharge (GL.month -1 ) 4.0 2.0 1.0 1500 0.8 1000 0.6 0.4 500 NL 0.2 0.0 0 2006/07 2007/08 2008/09 2009/10 2010/11 2011/12 2012/13 2013/14 SL 2010 – 2013 (flow) Data: Bice & Zampatti

  10. Mulloway production – Coorong estuary Research sampling ( multi-panel gill nets ) LMS SOM

  11. Summary • Dynamic fish assemblages in the Coorong – Flow, salinity and connectivity key drivers • Freshwater inflows promote diversity, abundance, recruitment and distribution in estuarine-dependent fish • High variability of estuarine system – long-term data needed to support management and policy decisions

  12. Acknowledgements - This project was funded by the DEWNR and is part of the SA Government’s Murray Futures program, funded in turn by the Australian Government’s Water for the Future initiative, and is supported by the MDBA Living Murray program. - Baseline work was funded by the FRDC, CSIRO WfHC Flagship and MDBA through SAMDB NRMB. - DEWNR staff Paul McEvoy, Adrienne Rumbelow, Rebecca Quin, Adam Watt, Kirsty Wedge, Jason Higham, Ann-Marie Jolley and Liz Barnett for support and project management. - Lakes and Coorong fishers for sample supply. - Ngarrindjeri Regional Authority (NRA) to provide field assistance (funded by the MDBA via IPP). - SARDI staff Jason Earl, Juan Livore, David Fleer, Greg Ferguson, Hanru Wang, Arron Strawbridge, Craig Noell and George Giatas.

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