Nice maps! You might be interested in rarefaction analyses that can help in partially taking into account varying observer effort across states. See the iNEXT package and this paper https://doi.org/10.1111/2041-210X.12613.
Nice maps! You might be interested in rarefaction analyses that can help in partially taking into account varying observer effort across states. See the iNEXT package and this paper https://doi.org/10.1111/2041-210X.12613.