I have experience with a lot of different standardized monitoring schemes and protocols.
I conducted fieldwork for different species groups, such as birds, butterflies, dragonflies, bats, moths & nighthawks.
These were all standardized counts for organisations as Sovon, Butterfly Foundation, Staatsbosbeheer, Natuurmonumenten, Goois Natuur Reservaat, Utrechts Landschap, VWG ‘t Gooi, EBBA2, etc.