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  2. Vegetation and slope stability - Wikipedia

    en.wikipedia.org/wiki/Vegetation_and_slope_stability

    Wind throw is the toppling of a tree due to the force of the wind, this exposes the root plate and adjacent soil beneath the tree and influences slope stability. Wind throw is a factor when considering one tree on a slope; however, it is of lesser importance when considering general slope stability for a body of trees as the wind forces involved represent a smaller percentage of the potential ...

  3. Hedera helix - Wikipedia

    en.wikipedia.org/wiki/Hedera_helix

    The leaves are alternate, 50–100 mm (2–4 in) long, with a 15–20 mm (0.6–0.8 in) petiole; they are of two types, with palmately five-lobed juvenile leaves on creeping and climbing stems, and unlobed cordate adult leaves on fertile flowering stems exposed to full sun, usually high in the crowns of trees or the top of rock faces.

  4. Arboreal locomotion - Wikipedia

    en.wikipedia.org/wiki/Arboreal_locomotion

    Animals other than primates that use gripping in climbing include the chameleon, which has mitten-like grasping feet, and many birds that grip branches in perching or moving about. To control descent, especially down large diameter branches, some arboreal animals such as squirrels have evolved highly mobile ankle joints that permit rotating the ...

  5. Tree climbing - Wikipedia

    en.wikipedia.org/wiki/Tree_climbing

    Tree climbing is a recreational or functional activity consisting of ascending and moving around in the crowns of trees. A rope, helmet, and harness can be used to increase the safety of the climber. Other equipment can also be used, depending on the experience and skill of the tree climber.

  6. Charred by fire, these grand California redwoods rise again ...

    www.aol.com/news/charred-fire-grand-california...

    Today, that forest is still dominated by the same trees, some of them more than 300 feet tall and 1,000 years old. ... There are chemical toilets, but no potable water, electricity, cell-phone ...

  7. Piton - Wikipedia

    en.wikipedia.org/wiki/Piton

    1960s-era pitons, including: knifeblades, lost arrows, bugaboos, ring angles, and bongs. A piton (/ ˈ p iː t ɒ n /; also called pin or peg) in big wall climbing and in aid climbing is a metal spike (usually steel) that is driven into a crack or seam in the climbing surface using a climbing hammer, and which acts as an anchor for protecting the climber from falling or to assist progress in ...

  8. Picea glauca - Wikipedia

    en.wikipedia.org/wiki/Picea_glauca

    Picea glauca (Moench) Voss., the White Spruce, [4] is a species of spruce native to the northern temperate and boreal forests in Canada and United States, North America.. Picea glauca is native from central Alaska all through the east, across western and southern/central Canada to the Avalon Peninsula in Newfoundland, Quebec, Ontario and south to Montana, North Dakota, Minnesota, Wisconsin ...

  9. Spruce - Wikipedia

    en.wikipedia.org/wiki/Spruce

    The peg-like base of the needles, or pulvinus, in Norway spruce (Picea abies) Pulvini remain after the needles fall (white spruce, Picea glauca). Determining that a tree is a spruce is not difficult; evergreen needles that are more or less quadrangled, and especially the pulvinus, give it away.

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