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California sage-grouse remain genetically diverse... for now


PhysOrg

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Genetic diversity is essential for a species to be able to adapt to environmental change, and when habitat loss divides a population into small, isolated fragments, that can spell trouble. Northeastern California is at the far western end of the range of Greater Sage-Grouse (Centrocercus urophasianus), and the fringe population there is declining due to the ongoing invasion of their sagebrush habitat by cheatgrass and juniper. To determine whether the genetic diversity of birds in the region is suffering as a result, Dawn Davis of the University of Idaho and her colleagues spent three years collecting blood samples from California sage-grouse on their breeding grounds for a new study forthcoming in The Condor: Ornithological Applications.

 

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