The RLI for European birds based on panEuropean extinction risk uses information from the Birds in Europe database (Tucker and Heath 1994; BirdLife International, 2004) to measure the projected overall regional extinction risk of sets of species, and to track changes in this risk
It is based on the proportion of species in each category on the regional Red List, and changes in this proportion over time resulting from genuine improvement or deterioration in the status of individual species. An RLI value of 1 (one) equates to all species being categorised as Least Concern at the European level, while an RLI value of 0 (zero) indicates that all species are extinct in Europe.
The recommended temperature for a refrigerator is between 1 – 4 °C
and for the freezer it should be set at -18 °C. Each degree below these temperatures makes no difference as to how well the food is preserved, but it does increase energy consumption by approximately five per cent. Place a thermometer in the refrigerator and the freezer to check the temperature!
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