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nurse log การใช้

ประโยคมือถือ
  • Large fragments of CWD that provide such habitat for herbs, shrubs, and trees are called nurse logs.
  • Meyers pointed out a seedling growing under the protection of a fallen tree, called a " nurse log ."
  • Old-growth forests are often Pacific coast, fallen timber may become nurse logs, providing a substrate for seedling trees.
  • A common feature of Pacific temperate rain forests of North America is the Nurse log, a fallen tree which as it decays, provides ecological facilitation to seedlings.
  • Variable retention is believed by some forestry experts to minimize the impact of logging operation by leaving biological legacies such as coarse woody debris ( nurse logs and snags ).
  • Also on this trail was a precise row of mature trees, positioned as if in military formation along the line of the nurse log that had long since moldered away beneath them.
  • Since the rain forest undergrowth is so dense, seedlings can have a fighting chance only by sprouting atop these " nurse logs, " then eventually spreading their roots down the sides of the log like straddling legs.
  • Like the now familiar example of nurse plants in harsh environments, " nurse logs " in a forest are sites of increased seed germination and seedling survival because the raised substrate of a log frees seedlings from competition with plants and mosses on the forest floor.
  • A wide diversity of plants is represented within the swamps, with certain species dominating in a variety of microhabitats dependent on factors such as available sunlight ( as in cases of trees downed by wind or disease ), soil Ph, standing groundwater, and differences of elevation within the swamp such as tussocks and nurse logs.
  • Along the western flanks of the mountains the increased orographic precipitation supports temperate rain forests in the Quinault, Queets, Hoh, and vine maple, which support large epiphytic communities of mosses, lichens, ferns, and clubmosses; an abundance of nurse logs on the forest floor; a relatively open forest canopy and sparse shrub layer; and a dense moss layer on the forest floor.