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Mean trophic level of the catch has also been used as a summary statistic for the consideration of broad-scale, coarsely resolved datasets such as the FAO dataset. The index is also the basis for other indicators, such as the “Fishery is balanced” (or FIB) index (see separate page). While these catch-based statistics can be informative, great care must be taken that they are not being confounded by economic forces guiding targeting or technological advances (Caddy and Garibaldi 2000).
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