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Mycorrhizal networks can connect many different plants and provide shared pathways by which plants can transfer infochemicals related to attacks by pathogens or herbivores, allowing receiving plants to react in the same way as the infected or infested plants. [32] A variety of plant derived substances act as these infochemicals.
During degradation, mycelium develops a dense network of thin strands that fuse together within the organic substrate, creating solid material that can hold multiple substrates together. This self-assembly property of mycelium is quite unique, and allows mycelium to grow on a wide range of organic material, including organic waste. [16]
Mycelium-based composites require a fungus and substrate. “Mycelium” is a term referring to the network of branching fibers, called hyphae, that are created by a fungus to grow and feed. When introduced to a substrate, the fungi will penetrate using their mycelium network, which then breaks down the substrate into basic nutrients for the fungi.
Two trees may grow to their mature size adjacent to each other and seemingly grow together or conjoin, demonstrating inosculation. These may be of the same species or even of different genera or families, depending on whether the two trees have become truly grafted together (once the cambium of two trees touches, they self-graft and grow together).
Oak regeneration failure is a woodland phenomenon whereby insufficient oak seedlings and saplings are recruited into the canopy to replace dead mature oaks.The result is a local decline in oak numbers while other more shade-tolerant trees such as maple, lime, and ash may become more prominent.
Manchineel trees are often signposted as dangerous. William Ellis, ship's surgeon for James Cook on his final voyage, wrote: On the fourth, a party of men were sent to cut wood, as the island apparently afforded plenty of that article; amongst other trees they unluckily cut down several of the manchineel, the juice of which getting into their ...
Stump sprouts can grow very quickly and so become viable trees themselves either for aesthetics or timber, due to the existing root structure; however, the cut portion of the trunk may weaken the sprouts and introduce disease into the newly forming tree(s). [2] A freshly cut tree stump, 2 hours after cutting A saprobiontic young spruce on a stump
The wood is ring-pored, has a brown heartwood and a light reddish sapwood. [8] The cork oak develops a taproot that reaches a depth of 1 to 2 m (3 + 1 ⁄ 4 to 6 + 1 ⁄ 2 ft) and from which several meters long, horizontally running side roots extend. [9] The trees can live over 400 years, and harvested specimens can be 150 to 200 years old. [6 ...