The Ghosts of Yosemite

Nijhuis, Michelle
October 2005
High Country News;10/17/2005, Vol. 37 Issue 19, p8
This article identifies evidence of conspicuous change in the natural world happening at the Yosemite National Park in California. Field science has changed a bit since the days of biologist Joseph Grinnel. The most significant difference between the old and new Grinnel expeditions lies inside the mouse traps. A small mouse with remarkably large ears is discovered. In addition, the new Yosemite crew also uncovered more changes. Four other small mammals have expanded their turf in the park, increasing the upper limits of their ranges by an average of 2,000 vertical feet.


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