Recent technological advances make satellites increasingly suited to grassland monitoring, even across the relatively small and fragmented natural and semi-natural grasslands in Europe. Additionally, instruments can be mounted on aircraft to provide multispectral (typically up to a dozen discrete spectral bands) or hyperspectral (100s or of under a meter. Furthermore, developments in Uncrewed Aerial Vehicle (UAV) technology now allows similar data to be captured at spatial resolutions down to millimetres.