revision preference src: Long-term forest dynamics plots show that the annual mortality of large Douglas-fir is only about 1 %. Thus, over centuries, western hemlock and western redcedar will come to dominate the canopy. <SEP> tgt: Long-term forest dynamics plots show that the annual mortality of large Douglas-fir is only about 1 %. Over centuries, western hemlock and western redcedar will come to dominate the canopy.