Table 2.
Natural biotic resource coverage according to the methods existing within current literature.
| Model | Indicator | Unit | Natural Biotic Resources | References |
|---|---|---|---|---|
| Exergy | Cumulative Energy Extracted from the Natural Environment | MJex/unit | wood | Dewulf et al., 2007, Alvarenga et al., 2013, Taelman et al., 2014 |
| Emergy | Solar Energy Factor (SEF) | MJse/unit | wood | Rugani et al. (2011) |
| EPS 2000 | Environmental Load Units (ELU) | ELU/kg | wood, fish & meat | Steen (1999) |
| BRD-fish (Biotic Resource Depletion) | 1/maximum sustainable yield (MSY) or 1/current fish catches (Ct) [to be applied in case of overexploitation] |
yr/t | Fish | Langlois et al. (2014) |
| LPY-fish (Lost Potential Yield) | Lost Potential Yields (LPY) | dimensionless | Fish | Emanuelsson et al. (2014) |
| BIRD | Biotic Resource Availability (BRA) | dimensionless | Terrestrial biotic materials | Bach et al. (2017) |