| connecting the dots: an invariant migration corridor links the holocene to the present. | numerous species undergo impressive movements, but due to massive changes in land use, long distance migration in terrestrial vertebrates has become a highly fragile ecological phenomenon. uncertainty about the locations of past migrations and the importance of current corridors hampers conservation planning. using archeological data from historic kill sites and modern methods to track migration, we document an invariant, 150 km (one-way) migration corridor used for at least 6000 years by north ... | 2006 | 17148280 |