0 Hayes, C.J. DeGomez, T.E. McMillin, J.D. Anhold, J.A. Hofstetter, R.W. 2008 Factors influencing pine engraver (Ips pini Say) colonization of ponderosa pine (Pinus ponderosa Dougl. ex. Laws.) slash in Northern Arizona Forest Ecology and Management Elsevier BV