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1. | Values for each of the 18 indices used in the Freshwater EHMP are calculated for each season (spring and autumn) for each site. |
2. | Index values are compared against Ecosystem Health Guideline values to derive standardised scores accounting for major (natural) spatial differences in stream types and differences in the scale of measurement across indices. Resulting scores range from zero to one, with zero indicative of ‘unhealthy’ or heavily disturbed conditions, and a score of one indicative of ‘healthy’ or minimally disturbed conditions. |
3. | Standardised scores are averaged across several combinations of indices, sites and seasons (see Smith and Storey, 2001) to provide intelligible summaries. |
4. | Visual summaries of results are produced to simplify the comparison of results for indices and indicators within individual reporting areas, including seasonal changes, and spatial variation within and amongst reporting areas. These summaries primarily involve: (1) box and whisker plots; (2) horizontal bar charts; (3) Ecosystem Health (EcoH) plots. |
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| | Reference:
Smith, M.J. and Storey, A.W. (2001). Design and Implementation of Baseline Monitoring (DIBM3): Developing an Ecosystem Health Monitoring Program for rivers and streams in South East Queensland. Report to the South East Queensland Regional Water Quality Management Strategy, Brisbane. |
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|  | | | | | | Streams in SEQ have been classified into four categories based on physical features. | | | |
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