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  2. Tree spiking - Wikipedia

    en.wikipedia.org/wiki/Tree_spiking

    Tree spiking involves hammering a metal rod, nail or other material into a tree trunk, either inserting it at the base of the trunk where a logger might be expected to cut into the tree, or higher up where it would affect the sawmill later processing the wood. Contact with the spike often damages saw blades, which can result in injuries, or ...

  3. Arborist - Wikipedia

    en.wikipedia.org/wiki/Arborist

    An arborist using a chainsaw to cut a eucalyptus tree in a public park Two arborists climbing and dismantling a Norway Maple in Ontario, Canada. An arborist [1], or (less commonly) arboriculturist, is a professional in the practice of arboriculture, which is the cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants in dendrology and horticulture.

  4. Arboreal locomotion - Wikipedia

    en.wikipedia.org/wiki/Arboreal_locomotion

    Leopards are great climbers and can carry their kills up trees to keep them out of reach from scavengers and other predators. Arboreal locomotion is the locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some animals may scale trees only occasionally (scansorial), but others are ...

  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.

  6. Tree topping - Wikipedia

    en.wikipedia.org/wiki/Tree_topping

    If wood begins to rot it could create a weak branch connection between the developing suckers and the main tree leading to a possible branch failure. If a tree is unable to compartmentalize the fungi, it may reach the trunk and ultimately kill the tree. [4] Aesthetics is another reason why people hire arborists to top their trees.

  7. Shakes (timber) - Wikipedia

    en.wikipedia.org/wiki/Shakes_(timber)

    Arising in cut timber they generally cause a reduction in strength. When found in a log they can result in a significant amount of waste, when a log is converted to lumber. Apart from heart shakes, often found in trees felled past their best, shakes in a log have no effect on the strength of shake free lumber obtained therefrom. [1]

  8. Reaction wood - Wikipedia

    en.wikipedia.org/wiki/Reaction_wood

    Reaction wood in a woody plant is wood that forms in place of normal wood as a response to gravity, where the cambial cells are oriented other than vertically. It is typically found on branches and leaning stems. It is an example of mechanical acclimation in trees. [1] [2]

  9. List of Nova episodes - Wikipedia

    en.wikipedia.org/wiki/List_of_Nova_episodes

    Re-narrated Horizon episode, first aired in the UK in 1972. [4]We give you a behind-the-scenes look at the making of a nature film. Oxford Scientific Films Unit shows how it tackles such problems as filming a wood wasp laying its eggs inside trees, the hatching of a chick and the courtship rituals of the stickleback.

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