Asymmetric dispersal allows an upstream region to control population structure throughout a species' range

Pringle, James M. ; Blakeslee, April M. H. ; Byers, James E. ; Roman, Joe. (2011). . Proceedings of the National Academy of Sciences of the United States of America, 108 (37) , 15288-15293. http://dx.doi.org/10.1073/pnas.1100473108