My friend and former colleague Mike Alexander, who has died aged 77, made a huge contribution to nature conservation in Wales and beyond.
After a decade as a warden on Skomer Island off the Pembrokeshire coast, Mike joined the Nature Conservancy Council (NCC) in 1986 as warden for the South Meirionnydd reserves in north Wales. Frustrated by what he saw as the lack of rigour in nature reserve management, he was pivotal in developing a computerised system for managing the special features of reserves, at a time when computers were viewed with suspicion by colleagues in the field.
