connected river, lake and estuarine system Rod Oliver | CSIRO Land - - PowerPoint PPT Presentation

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connected river, lake and estuarine system Rod Oliver | CSIRO Land - - PowerPoint PPT Presentation

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Water quality and micro-algae in a connected river, lake and estuarine system Rod Oliver | CSIRO Land and Water Flagship WATER FOR A HEALTHY COUNTRY FLAGSHIP Water Quality Upland Catchments Floodplain Urban Estuarine and Marine

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SLIDE 1

Water quality and micro-algae in a connected river, lake and estuarine system

WATER FOR A HEALTHY COUNTRY FLAGSHIP

Rod Oliver| CSIRO Land and Water Flagship

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SLIDE 2

Water Quality

CLLMM Water Quality | Rod Oliver 2 |

Upland Catchments Estuarine and Marine Floodplain Urban Groundwater Sediments

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SLIDE 3

Micro-algae

CLLMM Water Quality | Rod Oliver 3 |

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SLIDE 4

CLLMM Water Quality | Rod Oliver 4 |

Simplified aquatic food web

Microbial Loop Respiratory Respiratory Loss

Internal material : External material balance

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SLIDE 5

CLLMM Water Quality | Rod Oliver 5 |

Water quality monitoring sampling locations

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SLIDE 6

Water Quality Sampling Dates at different sites

CLLMM Water Quality | Rod Oliver 6 |

50000 100000 150000

Lake Alexandrina: Milang - Dates

Lock 1 Discharge [ML/Day] 1980 1990 2000 2010 Chlorophyll a Conductivity (25C) Dissolved Oxygen Dissolved Solids Total Iron Total Ammonia Nitrogen (as N) Nitrogen NOx (as N) Nitrogen TKN (as N) Nitrogen Total (as N) Organic Carbon Dissolved pH Phosphorus FRP (as P) Phosphorus Total (as P) Silica Reactive Sulphate Turbidity 50000 100000 150000

Lake Alexandrina: Middle - Dates

Lock 1 Discharge [ML/Day] 1980 1990 2000 2010 Chlorophyll a Conductivity (25C) Dissolved Oxygen Dissolved Solids Total Iron Total Ammonia Nitrogen (as N) Nitrogen NOx (as N) Nitrogen TKN (as N) Nitrogen Total (as N) Organic Carbon Dissolved pH Phosphorus FRP (as P) Phosphorus Total (as P) Silica Reactive Sulphate Turbidity 50000 100000 150000

Lake Alexandrina: Beacon 90=97 - Dates

Lock 1 Discharge [ML/Day] 1980 1990 2000 2010 Chlorophyll a Conductivity (25C) Dissolved Oxygen Dissolved Solids Total Iron Total Ammonia Nitrogen (as N) Nitrogen NOx (as N) Nitrogen TKN (as N) Nitrogen Total (as N) Organic Carbon Dissolved pH Phosphorus FRP (as P) Phosphorus Total (as P) Silica Reactive Sulphate Turbidity 50000 100000 150000

Lake Albert: Meningie - Dates

Lock 1 Discharge [ML/Day] 1980 1990 2000 2010 Chlorophyll a Conductivity (25C) Dissolved Oxygen Dissolved Solids Total Iron Total Ammonia Nitrogen (as N) Nitrogen NOx (as N) Nitrogen TKN (as N) Nitrogen Total (as N) Organic Carbon Dissolved pH Phosphorus FRP (as P) Phosphorus Total (as P) Silica Reactive Sulphate Turbidity 50000 100000 150000

Coorong: Tauwitchere - Dates

Lock 1 Discharge [ML/Day] 1980 1990 2000 2010 Chlorophyll a Conductivity (25C) Dissolved Oxygen Dissolved Solids Total Iron Total Ammonia Nitrogen (as N) Nitrogen NOx (as N) Nitrogen TKN (as N) Nitrogen Total (as N) Organic Carbon Dissolved pH Phosphorus FRP (as P) Phosphorus Total (as P) Silica Reactive Sulphate Turbidity 50000 100000 150000

Coorong: Murray Mouth - Dates

Lock 1 Discharge [ML/Day] 1980 1990 2000 2010 Chlorophyll a Conductivity (25C) Dissolved Oxygen Dissolved Solids Total Iron Total Ammonia Nitrogen (as N) Nitrogen NOx (as N) Nitrogen TKN (as N) Nitrogen Total (as N) Organic Carbon Dissolved pH Phosphorus FRP (as P) Phosphorus Total (as P) Silica Reactive Sulphate Turbidity

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SLIDE 7

Microalgae Sampling Sites and Times

CLLMM Water Quality | Rod Oliver 7 |

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SLIDE 8

CLLMM Water Quality | Rod Oliver 8 |

Microalgae time series for Lake Alexandrina

Lake Alexandrina: Milang

1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 50000 100000 150000 ML/Day 1e+00 1e+02 1e+04 1e+06 cells/mL

Green algae Diatoms Blue-green algae

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SLIDE 9

Murray River and Lake Alexandrina micro-algae

CLLMM Water Quality | Rod Oliver 9 |

MurrayR@TailemBend

1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 50000 100000 150000 ML/Day 1e+00 1e+02 1e+04 1e+06 cells/mL

Lake Alexandrina: Milang

1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 50000 100000 150000 ML/Day 1e+00 1e+02 1e+04 1e+06 cells/mL

Green algae Diatoms Blue-green algae

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SLIDE 10

Salinity

CLLMM Water Quality | Rod Oliver 10 |

Lake Alexandrina: Milang

1970 1975 1980 1985 1990 1995 2000 2005 2010 2015 50000 100000 150000 ML/Day 2000 4000 6000 8000 µS/cm Conductivity (25C)

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SLIDE 11

CLLMM Water Quality | Rod Oliver 11 |

Series1 Series3 Series5 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 1 2 3 4 5 6 7 8 9 10 11

Time series: Cell numbers of 6 micro-algae over 11 field trips

Cells/ml Algae type Field Trip

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SLIDE 12

CLLMM Water Quality | Rod Oliver 12 |

Water quality characteristics in Lake Alexandrina

Multivariate analyses

  • 4
  • 2

2 4 PC1

  • 4
  • 2

2 4 PC2

Dro

Pre Dro Post

Disch5 Conductivity NOx TN pH TP Turbidity

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SLIDE 13

CLLMM Water Quality | Rod Oliver 13 |

Microalgae communities in Lake Alexandrina:

Multivariate analyses

Transform: Square root Resemblance: S17 Bray Curtis similarity (+d)

Drought

Dro Post Pre

Aphanizomenon Aphanocapsa Planctonema Planktolyngbya Scenedesmus 2D Stress: 0.12

Pre-Drought: rank Planctonema (green) Anabaena (blue-green) Nodularia (blue-green) Oocystis (green) Dictyosphaerium (green) Drought: rank Planctolyngbya (blue-green) Aphanocapsa (blue-green) Aphanizomenon (blue-green) Ankistrodesmus (green) Pseudanabaena (blue-green) Post-Drought: rank Planctolyngbya (blue-green) Aphanocapsa (blue-green) Planctonema (green) Crucigenia (green) Oocystis (green)

Transform: Square root Resemblance: S17 Bray Curtis similarity (+d)

FYear

1982/1983 1983/1984 1984/1985 1985/1986 1986/1987 1987/1988 1988/1989 1989/1990 1990/1991 1991/1992 1992/1993 1993/1994 1994/1995 1995/1996 1996/1997 1997/1998 2005/2006 2006/2007 2007/2008 2008/2009 2009/2010 2010/2011 2011/2012 2012/2013 2013/2014

2D Stress: 0.05

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SLIDE 14

CLLMM Water Quality | Rod Oliver 14 |

Time series comparing water quality characteristics in Lake Albert with Lake Alexandrina

05/06 06/07 07/08 08/09 09/10 10/11 11/12 12/13 13/14 05/06 06/07 07/08 08/09 09/10 10/11 11/12 12/13 13/14

Lake Alexandrina: Filled rectangles Lake Albert : Circles:

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SLIDE 15

WQ parameters correlated to microalgae changes

CLLMM Water Quality | Rod Oliver 15 |

Transform: Square root Resemblance: S17 Bray Curtis similarity (+d)

Drought

Dro Post Pre

Disch5 Conductivity TN 2D Stress: 0.12

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Environmental Limits for Management

  • Multivariate analyses of the water quality and

microalgae across CLLMM regions will improve our understanding of characteristic environmental conditions helping set management triggers and limits of acceptable change.

16 | CLLMM Water Quality | Rod Oliver

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SLIDE 17

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