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  2. Stump harvesting - Wikipedia

    en.wikipedia.org/wiki/Stump_harvesting

    The stump is the base of the trunk and the attached woody roots. Tree stumps and roots are extracted using a hydraulic head on a tracked excavator or with a mechanical head equipped by a special tool for tractors. Stump harvesting is expected to provide an increasing component of the woody material required by the woody biomass power sector in ...

  3. Bursaphelenchus xylophilus - Wikipedia

    en.wikipedia.org/wiki/Bursaphelenchus_xylophilus

    The nematodes drop off the beetle, and infect healthy pine trees when the adult beetles eat the young pine branches. [16] The pine wilt nematode is spread by a number of bark beetles and wood borers, typically associated with the genus Monochamus of pine sawyers. [17] Pine sawyers lay their eggs in the bark of dead timber.

  4. Tree uprooting - Wikipedia

    en.wikipedia.org/wiki/Tree_uprooting

    A fallen tree with exposed root plate Uprooting is a form of treefall in which the root plate of a tree is torn from the soil, disrupting and mixing it and leaving a pit-mound . [ 1 ] [ 2 ]

  5. Thorns, spines, and prickles - Wikipedia

    en.wikipedia.org/wiki/Thorns,_spines,_and_prickles

    Prickles on a blackberry branch. In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, rigid extensions or modifications of leaves, roots, stems, or buds with sharp, stiff ends, and generally serve the same function: physically defending plants against herbivory.

  6. Heterobasidion irregulare - Wikipedia

    en.wikipedia.org/wiki/Heterobasidion_irregulare

    Heterobasidion irregulare is a tree root rotting pathogenic fungus that belongs to the genus Heterobasidion, which includes important pathogens of conifers and other woody plants. It has a wide host and geographic range throughout North America and causes considerable economic damage in pine plantations in the United States.

  7. Bark (botany) - Wikipedia

    en.wikipedia.org/wiki/Bark_(botany)

    Bark is the outermost layer of stems and roots of woody plants. Plants with bark include trees, woody vines, and shrubs. Bark refers to all the tissues outside the vascular cambium and is a nontechnical term. [1] It overlays the wood and consists of the inner bark and the outer bark.

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