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  • Quantifying and Evaluating Ecosystem Health: A Case Study from Moreton Bay, Australia

    Author(s)
    J. Pantus, Francis
    Dennison, William
    Griffith University Author(s)
    Pantus, Francis
    Year published
    2005
    Metadata
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    Abstract
    As part of the program monitoring the ecosystem health of Moreton Bay, Queensland, Australia, we developed a means for assessing ecosystem health that allows quantitative evaluation and spatial representations of the assessments. The management objectives for achieving ecosystemhealth were grouped into ecosystem objectives, water quality objectives, and human health objectives. For the first two groups, aspects of the ecosystem(e.g., trophic status) were identified, and an indicator was chosen for each aspect. Reference values for each indicator were derived from management objectives and compared with the mapped survey ...
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    As part of the program monitoring the ecosystem health of Moreton Bay, Queensland, Australia, we developed a means for assessing ecosystem health that allows quantitative evaluation and spatial representations of the assessments. The management objectives for achieving ecosystemhealth were grouped into ecosystem objectives, water quality objectives, and human health objectives. For the first two groups, aspects of the ecosystem(e.g., trophic status) were identified, and an indicator was chosen for each aspect. Reference values for each indicator were derived from management objectives and compared with the mapped survey values. Subregions for which the indicator statistic was equal to or better than the assigned reference value are referred to as ''compliant zones.'' High-resolution surface maps were created from spatial predictions on a fine hexagonal grid for each of the indicators. Eight reporting subregions were established based on the depth and predicted residence times of the water. Within each reporting subregion, the proportion that was compliant was calculated. These results then were averaged to create an integrated ecosystemhealth index. The ratings by a team of ecosystemexper ts and the calculated ecosystemhealth indices had good correspondence, providing assurance that the approach was internally consistent, and that the management objectives covered the relevant biologic issues for the region. This method of calculating and mapping ecosystem health, relating it directly to management objectives, may have widespread applicability for ecosystem assessment
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    Journal Title
    Environmental Management
    Volume
    36
    Issue
    5
    DOI
    https://doi.org/10.1007/s00267-003-0110-6
    Subject
    Environmental Science and Management not elsewhere classified
    Ecosystem Function
    Publication URI
    http://hdl.handle.net/10072/60647
    Collection
    • Journal articles

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