Function developed by CAMA in R software based on the formula proposed by Dáttilo, Guimarães & Izzo (2013b), where the species with values equal or larger than 1 are considered as core components and species <1 are considered peripheral.

If you use this function please cite: Díaz-Castelazo C, Martínez-Adriano CA, Dáttilo W, Rico-Gray V. 2020. Relative contribution of ecological and biological attributes in the fine-grain structure of ant-plant networks. PeerJ 8:e8314 https://doi.org/10.7717/peerj.8314