For the purposes of this indicator, an inclusive approach has been taken, whereby a species only has to be included in one of the country lists to be included on the combined list. The Scottish Biodiversity list has a final criterion based on the importance of species to people, however, species designated under this criterion were not considered here. The taxonomic composition of the combined four country list (FCL) is shown in Table 2. Some countries have included a small number of taxa below the species level (i.e. sub-species) on their biodiversity lists. Such infra- specific taxa were only retained on the combined four country biodiversity list if the associated species was not included. For example, a sub-species of the willow tit (Poecile montanus) is included on the Welsh list but it is a full species on the Scottish Biodiversity list, thus on the combined list only the full species was retained. Table 1: the biodiversity lists of the four countries of the UK Country Number Criteria for of Taxa species inclusion England 943 On the 2007 (S41) UK BAP list Hen Harrier Northern 1: On 481 the 2007 Ireland (NI) UK BAP list priority 2: Rapid species list decline of >= 2% per year 3: Decline of >=1 % per year and NI holds >= 50% of Irish, or >=20 % of UK population or Irish/UK population restricted to NI 4: Rare in NI (1-2 and NI holds >=50% of Irish, or >=20% of UK population or Irish/UK population restricted to NI 5: >=20 % of a well recognised sub-species in NI 6: Red data book species
For the purposes of this indicator, an inclusive approach has been taken, whereby a species only has to be included in one of the country lists to be included on the combined list. The Scottish Biodiversity list has a final criterion based on the importance of species to people, however, species designated under this criterion were not considered here. The taxonomic composition of the combined four country list (FCL) is shown in Table 2. Some countries have included a small number of taxa below the species level (i.e. sub-species) on their biodiversity lists. Such infra- specific taxa were only retained on the combined four country biodiversity list if the associated species was not included. For example, a sub-species of the willow tit (Poecile montanus) is included on the Welsh list but it is a full species on the Scottish Biodiversity list, thus on the combined list only the full species was retained. Table 1: the biodiversity lists of the four countries of the UK Country Number of Taxa Criteria for species inclusion England (S41) 943 On the 2007 UK BAP list Hen Harrier Northern Ireland (NI) priority species list 481 1: On the 2007 UK BAP list 2: Rapid decline of >= 2% per year 3: Decline of >=1 % per year and NI holds >= 50% of Irish, or >=20 % of UK population or Irish/UK population restricted to NI 4: Rare in NI (1-2 and NI holds >=50% of Irish, or >=20% of UK population or Irish/UK population restricted to NI 5: >=20 % of a well recognised sub-species in NI 6: Red data book species
UKBI2017_TechBG_C4a.docx