1. a Faculty of Forestry and Environment Management , University of New Brunswick , P.O. Box 44555, Fredericton, NB, E3B 6C2, Canada
2. b Radarsat International , 13800 Commerce Parkway , MacDonald Dettwiler Building , Richmond, British Columbia, V6V 2J3, Canada
3. c Natural Resources Canada , Canadian Forest Service , Northern Forestry Centre , 5320 – 122 Street, Edmonton, Alberta, T6H 3S5, Canada