UAV-based remote sensing to characterise local-scale spatial variation in the occurrences of the host plant and larvae nests of the Marsh Fritillary butterfly (Euphydras aurinia)
The survival and persistence of the threatened Marsh Fritillary butterfly (E. aurinia) is linked to the availability of its host plant, the Devil’s Bit (S. pratensis), which primarily inhibits calcareous grasslands. Previous research has established that mapping the distribution of S. pratensis serves as a reliable indicator for identifying the presence of E. aurinina larvae nests. In this study,
