The Ecosystem Diagnosis and Treatment (EDT) approach and concept involves analysis of a patient (fish) and template (habitats). It is largely based on numeric ratings of key habitat and productivity attributes, as determined by a select group of experts familiar with the circumstances within a given basin. The six basic steps of EDT are:
- Identify objectives
- Perform analysis and diagnosis
- Formulate treatments
- Describe benefits and risks (trade-off analysis)
- Refine project objectives
- Apply treatments, monitor, and evaluate.
EDT and EDTlight are proprietary models developed by Mobrand Biometrics, Inc. (now MOBRAND-Jones & Stokes) to describe the relationship between quantity and quality of habitat and fish performance. This is accomplished using a detailed set of functional relationships or “rules” to generate model outputs in the form of relative abundance (capacity), productivity, and life history diversity of a focal species.
The following reference and website are recommended for additional information on EDT and EDTlight models:
Mobrand Biometrics, Inc. 1999. The EDT Method. Mobrand Biometrics, Inc., Vashon, Washington.
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