“…These surveys provided measures of timber volume, growth, mortality, and removals. Removals data also are provided by the annual pulpwood reports (Hackett and Smith 1990;Hackett 1992;Piva 1993, 1994;Piva , 1996Piva , 1997Howell 1993;Miller 1994;Howell and Hartsell 1995;Johnson and Howell 1996;Johnson and Steppleton 1996), timber product output reports for Missouri Jones 1997, Smith andJones 1990) and severance tax data for Arkansas (Levins 1997).…”