migration route Link between two bio-geographical regions that permits the interchange of plants and/or animals. Various types are recognized in the literature: for example, G. G. Simpson's (1940) ‘corridors’, ‘filters’, and ‘sweepstakes routes’ are widely referred to in connection with mammalian, and more recently reptilian, migrations.

migration route A link between two biogeographical regions that permits the interchange of plants and/or animals. Various types are recognized in the literature: e.g. G. G. Simpson's ‘corridors’, ‘filters’, and ‘sweepstakes routes’ are widely referred to in connection with mammalian, and more recently reptilian, migrations.

migration route A link between two biogeographical regions which permits the interchange of plants and/or animals. Various types are recognized in the literature; for example. G. G.Simpson's‘corridors’, ‘filters’, and ‘sweepstakes routes’ are widely referred to in connection with mammalian, and more recently reptilian migrations.

migration route The link between two biogeographical regions that permits the interchange of plants and/or animals.