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

▶

Sep 26, 2022 194 likes •332 views

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

SLIDE 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

SLIDE 2

Black bream Greenback flounder Yelloweye mullet Sandy sprat Smallmouthed hardyhead

Mulloway

Coorong fishes

Lamprey Congolli

SLIDE 3

Fishes and Estuaries

Freshwater

Adapted from Whitfield 1999

Diadromous Estuarine Marine

SLIDE 4

Dynamic estuarine – lagoonal system

Flow
Connectivity
Salinity
Productivity

SLIDE 5

Annual barrage flow

Drought Flood/flow

SLIDE 6

Australian salmon Australian herring Australian anchovy King george whiting Kelpfish Toad fish

2007–2010 (drought)

‘Marine stragglers’

SLIDE 7

Distribution

E NL SL

Drought Period

Recruitment/Abundance

2006/07 2007/08 2008/09 2009/10 2010/11 2011/12 2012/13 2013/14

Abundance (fish.hour-1)

0.0 0.2 0.4 0.6 0.8 1.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0

Discharge (GL.month-1)

500 1000 1500 2000 2500

Data: Bice & Zampatti

SLIDE 8

Bony herring Australian smelt Sandy sprat Lagoon goby Congolli Pouched lamprey

‘Freshwater’ ‘Diadromous’ ‘Estuarine’ ‘Marine migrant’

2010–2013 (flow)

Mulloway

SLIDE 9

Distribution

E NL SL

2010–2013 (flow)

Recruitment/Abundance

Data: Bice & Zampatti

2006/07 2007/08 2008/09 2009/10 2010/11 2011/12 2012/13 2013/14

Abundance (fish.hour-1)

0.0 0.2 0.4 0.6 0.8 1.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0

Discharge (GL.month-1)

500 1000 1500 2000 2500

SLIDE 10

Mulloway production – Coorong estuary

Research sampling (multi-panel gill nets)

SOM LMS

SLIDE 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

SLIDE 12

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.

SARDI staff Jason Earl, Juan Livore, David

Fleer, Greg Ferguson, Hanru Wang, Arron Strawbridge, Craig Noell and George Giatas.

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).

Acknowledgements

Baseline work was funded by the FRDC,

CSIRO WfHC Flagship and MDBA through SAMDB NRMB.