publications
List, R., O. R. W. Pergams, J. Pacheco, J. Cruzado, and G. Ceballos. 2010. Genetic divergence of Microtus pennsylvanicus chihuahuensis and conservation implications of marginal population extinctions. Journal of Mammalogy 91:1093-1101.Pergams, O.
R. W. and J. E. Norton. 2006. Treating a single stem can kill the whole shrub:
A scientific assessment of buckthorn control methods. Natural Areas Journal 30:300-309.
Pergams, O.
R. W. and D. Nyberg. 2003. Spermophilus
franklinii. In: IUCN 2008. 2008 IUCN Red List of Threatened Species.
Pergams, O.
R. W. and D. Nyberg.
