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Due to the prevalence of Sitka spruce in cool, wet climates, its thin bark and shallow root system are not adapted to resist fire damage and it is thus very susceptible. Sitka spruce forests have a fire regime of severe crown or surface fires on long intervals, (150 to 350+ years) which results in total stand replacement.
The San Juan Spruce is a Sitka spruce (Picea sitchensis) tree located in the San Juan Valley of Vancouver Island, British Columbia, Canada. Until July 2016 it was the second largest known Sitka spruce tree by volume, [ 2 ] surpassed only by the Queets Spruce in Washington , United States .
Pissodes strobi, known as the white pine weevil or Engelmann spruce weevil, is the primary weevil attacking and destroying white pines. It was described in 1817 by William Dandridge Peck , professor of natural history and botany at Harvard University .
Elatobium abietinum, commonly known as the spruce aphid [2] or green spruce aphid, [3] is a species of aphid in the subfamily Aphidinae that feeds on spruce (Picea spp.), and occasionally fir (Abies spp.). It is native to Northern, Central and Eastern Europe and has spread to Western Europe, North America and elsewhere.
Other names for this tree have included Oregon pine, [7] British Columbian pine, [8] Puget Sound pine, [8] Douglas spruce, [8] false hemlock, [7] red fir, [7] or red pine [7] (although again red pine may refer to a different tree species, Pinus resinosa, and red fir may refer to Abies magnifica).
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Stumps of trees at the Neskowin Ghost Forest. The Neskowin Ghost Forest is the remnants of a Sitka spruce forest on the Oregon Coast of the United States. The stumps were likely created when an earthquake of the Cascadia subduction zone abruptly lowered the trees, that were then covered by mud from landslides or debris from a tsunami. [1]
Large sitka spruce tree at Harris Creek on Vancouver Island. Closeup of the Harris Creek Sitka Spruce. The Harris Creek Sitka Spruce is a large Sitka spruce tree, about 4 metres (13 ft) in diameter, [1] near the creek bed of Harris Creek, off the Pacific Marine Road between Port Renfrew, BC and Honeymoon Bay, BC on Vancouver Island, in British Columbia.