Oceanic islands have been the grand stage of documented extinctions. In view of limited resources, efficient prioritization
is crucial to avoid the extinction of taxa. This work lists the top 100 management priority species for the European archipelagos
of the Macaronesian region (Azores, Madeira and the Canary Islands), taking into account both their protection priority and
their management feasibility. Bryophytes, vascular plants, molluscs, arthropods and vertebrates were scored by species experts
following two sets of criteria: (i) protection priority, including ecological value, singularity, public institutions’ management
responsibilities and social value; (ii) management feasibility, including threats knowledge and control feasibility, external
socio-economical support for management and biological recovery potential. Environmental managers weighted the same criteria
according to their management importance. Final species scores were determined by the combination of both species valuation
and criteria weighting. Vascular plants dominate the Top 100 list, followed by arthropods and vertebrates. The majority of
listed taxa are endemic to one archipelago or even to a single island. The management feasibility criteria did not dictate
that all taxa must be eminently endangered, as for most of the species it should be relatively easy to control threats. The
main advantages of this process are the independent participation of scientists and conservation managers, the inclusion of
criteria on both protection priority and management feasibility and the taxonomically unbiased nature of the process. This
study provides a potentially useful biodiversity conservation tool for the Macaronesian archipelagos that could be readily
implemented by the respective regional governments in future legislation.
Keywords Azores - Biodiversity management - Canary Islands - Conservation priority - Macaronesia - Madeira - Ranking criteria - Risk assessment - Threatened species