Premium
On the Covariance of the Community Matrix
Author(s) -
Vandermeer John H.
Publication year - 1972
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1935728
Subject(s) - covariance , covariance matrix , rational quadratic covariance function , matérn covariance function , law of total covariance , estimation of covariance matrices , mathematics , selection (genetic algorithm) , covariance intersection , sample mean and sample covariance , covariance function , statistics , matrix (chemical analysis) , ecology , computer science , biology , artificial intelligence , chemistry , chromatography , estimator
A clarification of the meaning of the covariance of the community matrix is presented along with calculating equations for both the mean species covariance and the covariance of the row and column means. A brief discussion of α selection and its determination of the covariance is given, followed by table for determining the expected number of species in a community from a knowledge of mean α and cov α.