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Nutrient Release from Sediments of the Torbay Drainage System, South-western Australia

Created 16/10/2025

Updated 16/10/2025

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In April 2005, Geoscience Australia (GA) conducted a field survey of the waterbodies of the Torbay catchment drainage system. The Torbay Catchment Group and the Western Australian Department of Environment commissioned this study in order to address critical knowledge gaps in their understanding of the major components of the nutrient budget. In particular, the role of benthic nutrient fluxes, their magnitude, and total benthic nutrient supply to the water column for phytoplankton growth. The waterbodies studied were Torbay inlet, Lake Powell, Marbellup Brook and Lake Manarup. The key findings of this study were: 1. the sediments are a major source of nutrients to the water column of all waterbodies; and 2. denitrification, nitrogen fixation and benthic photosynthesis are critical processes influencing overall water quality.

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Additional Info

Field Value
Title Nutrient Release from Sediments of the Torbay Drainage System, South-western Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/76341130-69cd-4830-aa57-88a90c41cc1f
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 22/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        117.5,
        -35.5
      ],
      [
        118.0,
        -35.5
      ],
      [
        118.0,
        -35.0
      ],
      [
        117.5,
        -35.0
      ],
      [
        117.5,
        -35.5
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Nutrient Release from Sediments of the Torbay Drainage System, South-western Australia". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/nutrient-release-from-sediments-of-the-torbay-drainage-system-south-western-australia1