cij{ Schoener's index of co-occurrence }
jaccard{ Jaccard index of co-occurrence }
checkerboard{ Checkerboard index of co-occurrence }
roij{ ROij index of co-occurrence }
Value
A dist object with co-occurrences among all species pairs
References
Hardy, O. In press. Testing the spatial phylogenetic structure of local communities :
statistical performances of different null models and test statistics on a locally neutral community. Journal of Ecology.