All local and national park authorities were invited to contribute, resulting in 30 interviews covering the majority of authorities in Wales.
Gwahoddwyd pob awdurdod lleol ac awdurdod parc cenedlaethol i gyfrannu, a roddodd 30 o gyfweliadau, a hynny’n cwmpasu’r rhan fwyaf o awdurdodau yng Nghymru.