A study on Quadra Island indicates wildlife survives group selection logging, but retention of second-growth trees is recommended.
Small clearcut and pushover logging patch cuts in the Morte Lake area of Quadra Island, in northern Georgia Strait, were the subject of a recent study which looked at the effects of group selection logging on wildlife. The study took place over the past five-and-a-half years, and wildlife populations were sampled for two years prior to logging and one year after logging.
According to the study's report, prepared by biologist Jennifer Balke of nearby Denman Island, there were no substantial effects of the first entry of group selection logging on populations of birds or small mammals sampled in the sites.
However, the study does recommend the retention of mature second growth trees and snags, in patches or buffer strips, to supply future large trees as roosts, cavities, and large coarse woody debris. Such patches or buffer strips of mature second-growth trees and snags would help to "sustain the observed wildlife diversity and abundance through repeated logging entries."