intermigration

intermigration

(ˌɪntəmaɪˈɡreɪʃən)
n
migration between two groups of people, animals, etc, resulting in an exchange of habitat
References in classic literature ?
And to this continuity of the circumpolar land, and to the consequent freedom for intermigration under a more favourable climate, I attribute the necessary amount of uniformity in the sub-arctic and northern temperate productions of the Old and New Worlds, at a period anterior to the Glacial epoch.
Several discrete populations of smooth dogfish likely exist, separated by large geographic areas; and there appears to be little intermigration between the different populations (Bigelow and Schroeder, 1948).
Are the opposing selection pressures on exposed and protected shores sufficient to maintain genetic differentiation between gastropod populations with high intermigration rates: Hydrobiologia 193:41-52.