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Sitka spruce is shade tolerant but not as much as its competitors, [4] preferring full sun if possible. It is a pioneer on landslides, sand dunes, uplifted beaches, and deglaciated terrain. However, it is a climax species in coastal forests, where it can become dominant.
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 .
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]
A list of tree species, grouped generally by biogeographic realm and specifically by bioregions, and shade tolerance. Shade-tolerant species are species that are able to thrive in the shade, and in the presence of natural competition by other plants.
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. The weevil is dark brown with white spots and is native to North America. [1]
Closer to the ocean, red alder grow in place of the salt-water intolerant redwood. [98] The tallest known Sitka spruce grows in the parks. [99] Sitka spruce are plentiful along the coast, better adapted to salty air than other species. Other associated trees are the tanoak, Pacific madrone, bigleaf maple, and California laurel. [100]
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.
These cuttings were grafted onto ordinary Sitka spruce, resulting in two golden saplings. The trees were grown in the UBC Botanical Garden and Centre for Plant Research. Upon hearing of the tree's destruction in 1997, the arboretum offered one of the two young trees to replace Kiidk'yaas. However, the sapling died in storage before it could be ...