title: Measures of ecological association.
abstract: Six criteria suitable for measures of ecological coexistence are proposed. For twenty such measures are examined whether they satisfy these criteria or not. Four of them satisfy all six criteria. Three of them, suggested by Ochiai, Dice and Jaccard are recommended. For them asymptotic standard errors are given. An example is given with asymptotic confidence intervals for the three measures recommended.
authors.affiliation: Department of Statistics, University of Uppsala, P.O. Box 513, S-75120, Uppsala, Sweden.
authors.forename: Svante
authors.initials: S
authors.lastname: Janson
authors.affiliation: Department of Statistics, University of Uppsala, P.O. Box 513, S-75120, Uppsala, Sweden.
authors.forename: Jan
authors.initials: J
authors.lastname: Vegelius