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Revision as of 10:23, 7 November 2019
| Layer Info | |
|---|---|
| Category | Biodiversity indicator |
| Editable | No |
| Data source | Ecosystem simulation (EwE) |
| Values | |
| Very Low | |
| Low | |
| Medium | |
| High | |
| Very High | |
| Extreme | |
Description:
The large fish indicator (LFI) is defined in broad terms as the proportion of total fish biomass of a defined suite of species sampled in a particular survey programme that exceeds a specified threshold length. It describes the proportion (by weight) of the fish community that is larger than some length threshold (40 cm for the North Sea). It provides a metric that can be related easily to a defined Ecological Quality Objective (EcoQO) based on a reference period when the fish community was considered to be exploited sustainably.
In the North Sea, the EcoQO is an LFI of ≥ 0.30.
Source: Shephard, S., Reid, D. G., & Greenstreet, S. P. R. (2011). Interpreting the large fish indicator for the Celtic Sea. ICES Journal of Marine Science, 68(9), 1963–1972.
MSP Challenge 2050:
The Shannon Diversity Indicator a month-by-month, computer generated data layer following calculations made by the ecosystem simulation (EwE).
IN THIS TAB EXTENDED CONTENT IS PLACED
ON THIS TAB VISUAL CONTENT IS PLACED
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Co-funded by the European Union.