857470.item.6

Binary adjacency matrix of the Cuban food web. Rows are predatory guilds and columns are prey. The th element of the matrix is 1 if guild preys upon species in guild , and 0 otherwise. Note that the matrices are therefore asymmetric about the diagonal and that there are 265 rows representing each guild in the dataset. Taxa that are missing from the food web, for example, the tiger shark Galeocerdo cuvieri, are included as disconnected nodes, that is, rows and columns comprising zero elements only. This is for consistency with future datasets of related regions in which the species might be present