Dominant overstory trees were Western Hemlock (Tsuga heterophylla
) with lesser amounts of Douglas-fir (Pseudotsuga menziesii) and Red Alder (Alnus rubra).
Red cedar (Thujaplicata) and western hemlock Tsuga heterophylla
) pollens have been found in lake sediments of the area up to 3,500 years ago, but no earlier.
This is somewhat surprising because western hemlock (Tsuga heterophylla
) generally has more branches and foliage per cubic meter of bole than Douglas-fir, and the percentage of hemlock is higher on the Washington Olympic Peninsula than in Oregon.
Gerllaw roedd darn o dir lle'r oedd corwyntoedd wedi difa coed sbriwsenhemlog y Gorllewin (Tsuga heterophylla
; western hemlock-spruce) ac roedd dipyn o ailblannu wedi digwydd yma gan ddefnyddio derw, criafol a chyll.
Andrews Experimental Forest, Blue River Ranger District of Willamette National Forest, Lane Co., 6.5 km East of Blue River town, 520 m asl, "Cougar 1" site, old-growth forest of Tsuga heterophylla
zone (tree species: Douglas fir Pseudotsuga menziessi, western hemlock Tsuga heterophylla
, western red-cedar Thuja plicata), ex decayed log, 22.IX.2006, A.
Douglasfir (Pseudotsuga menziesii) and bigleaf maple (Acer macrophyllum) are the dominant trees with the presence of grand fir (Abies grandis), western hemlock (Tsuga heterophylla
) and western redcedar (Thuja plicata) (Akay et al.
Their proximity to a habitat containing Coastal Douglas fir (Pseudotsuga menziesii) and Western hemlock (Tsuga heterophylla
) may play a role in the epidemiology of C.
Species used in the original particleboard were identified as western hemlock (Tsuga heterophylla
), Douglas-fir (Pseudotsuga menziesii), and a mixture of tropical species.
This exotic pest entered the United States from Japan in the 1920's and was first reported in Oregon on western hemlock, Tsuga heterophylla
(Raf.) Sarg., in 1924.
The ICH zone also occurs at 750-1,550 m elevation in wetter areas and includes a wide variety of conifer tree species, with western hemlock (Tsuga heterophylla
) and western red cedar (Thuja plicata) predominating.
(4.) The species comprising the North American Pacific Coast hemlock commercial groups are Western hemlock (tsuga heterophylla
) and Amabilis fir (abies amabilis) They grow in mixed stands throughout the coast and interior wet belt forests in BC extending from Alaska southward.
Western hemlock (Tsuga heterophylla
) and Sitka spruce (Picea sitchensis) blanket the shore line and cliffs, providing habitat for moose, mountain goats, and blacktailed deer (Odocoileus hemionus), while the coastline and rivers teem with waterfowl and salmon.