Methodology
The state in eachspatial unit is assessed as 1 of 4 ordinal categories: absent (species does not exist in the wild in the spatialunit), present (species occurs but is not viable), viable,and functional (as defined above). These , categories areassigned weights, G=∑sWS/(WF×N×100), where s is each spatial unit,Ws the weight of the state in the spatial unit (0 to 3),WF is the weight of the functional category, and N is the number of spatial units. The denominator is the maximum possible score attained when all spatial units are assessed as functional. The states (e.g.,current state) are based on this formula and thus arecalculated as a percentage of the fully recovered state.The conservation metrics (e.g., conservation legacy) arecalculated as differences between 2 states.
Data description
4 metrics of recovery progress: conservation legacy, effect of conservation actions conducted to date; conservation dependence, importance of ongoing and future conservation, with a focus on expected deterioration in the state of the species if all ongoing conservation actions were to cease; conservation gain, expected improvement in state of the species as a result of current and planned conservation actions; and recovery potential, conservation aspiration or ambition (i.e., maximum plausible recovery improvement in the futurewith sustained conservation efforts and conservation in-novation over the long term). Each metric is calculated as a difference between 2 states (e.g., current and counterfactual). The states, in turn, are calculated in terms of recovery, as a green-list score
Indicator
Potentially disappeared fractions of species (PDF) - Marine ecotoxicity
Method / tool
MariLCA