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Nutrient Sources, Water Quality and Biogeochemical Processes in the Coorong, South Australia

Created 16/10/2025

Updated 16/10/2025

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The Coorong, a shallow coastal lagoon at the mouth of the Murray River, has had a significant decline in water quality over the last 15 years because of reduced freshwater inflows. Salinity has increased throughout the lagoon and currently ranges between 60 and 190 psu depending on the proximity to the Murray Mouth and the season. Although nutrient inflow has been negligible in recent years, the lagoon is considered euthrophic. This study aimed to identify the source of nutrients and the biogeochemical processes that transform them. The key findings were: 1. Groundwater discharge is likely to be an important nutrient source 2. Nitrogen appears to be the nutrient limiting primary production 3. Decomposition of organic matter in the sediments is highly seasonal with much higher rates in the summer.

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Field Value
Title Nutrient Sources, Water Quality and Biogeochemical Processes in the Coorong, South Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/2f2de352-0959-40cd-b4d6-089a4ebc0e99
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        139.0,
        -36.0
      ],
      [
        139.5,
        -36.0
      ],
      [
        139.5,
        -35.5
      ],
      [
        139.0,
        -35.5
      ],
      [
        139.0,
        -36.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Nutrient Sources, Water Quality and Biogeochemical Processes in the Coorong, South Australia". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/nutrient-sources-water-quality-and-biogeochemical-processes-in-the-coorong-south-australia1