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Foliage and cones. Red spruce is a perennial, [8] shade-tolerant, late successional [9] coniferous tree that under optimal conditions grows to 18–40 m (59–131 ft) tall with a trunk diameter of about 60 cm (24 in), though exceptional specimens can reach 46 m (151 ft) tall and 100 cm (39 inches) in diameter.
Dendroctonus rufipennis. Dendroctonus rufipennis, the spruce beetle, is a species of bark beetle native to British Columbia, Newfoundland and Labrador, Nova Scotia, Ontario, Quebec, Northern Manitoba, the Yukon, Alaska, Colorado, Wyoming, Montana, and Maine. They are known to destroy forests of spruce trees [1] including Engelmann, White, [2 ...
Porcupines (Erethizon dorsatum L.) may damage spruce (Nienstaedt 1957), [40] but prefer red pine. [41] Bark-stripping of white spruce by black bear (Euarctos americanus perniger) is locally important in Alaska (Lutz 1951), [42] but the bark of white spruce is not attacked by field mice (Microtus pennsylvanicus Ord), [43] even in years of heavy ...
Picea sitchensis, the Sitka spruce, is a large, coniferous, evergreen tree growing to just over 100 meters (330 ft) tall, [2] with a trunk diameter at breast height that can exceed 5 m (16 ft). It is by far the largest species of spruce and the fifth-largest conifer in the world (behind giant sequoia, coast redwood, kauri, and western red cedar ...
Picea engelmannii is a medium-sized to large evergreen tree growing to 25–40 metres (82–131 feet) tall, exceptionally to 65 m (213 ft) tall, and with a trunk diameter of up to 1.5 m (4 ft 11 in). The reddish bark is thin and scaly, [6] flaking off in small circular plates 5–10 centimetres (2–4 in) across. The crown is narrow conic in ...
Dendroctonus beckeri (Thatcher, 1954) Dendroctonus rhizophagus Thomas & Bright. Dendroctonus valens, also known as the red turpentine beetle, is a species of bark beetle characterized by a dark-reddish brown hue. It is native to forests across North and Central America. [1] [2] In its adult form, these beetles range from six to ten millimeters ...
Picea breweriana. Brewer spruce, Ridge above Bear Lake, Siskiyou Mountains, Ca. Picea breweriana, known as Brewer spruce, [2][3] Brewer's weeping spruce, or weeping spruce, is a species of spruce native to western North America, where it is one of the rarest on the continent. The specific epithet breweriana is in honor of the American botanist ...
Alnus rubra is the largest species of alder in North America and one of the largest in the world, reaching heights of 20 to 30 metres (66 to 98 ft). The official tallest red alder (as of 1979) stands 32 m (105 ft) tall in Clatsop County, Oregon (US). [7] The trunks range from 25 to 50 centimetres (10 to 19⁄ in) in diameter. [8]
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