Search results
Results from the WOW.Com Content Network
Drunken trees, tilted trees, or a drunken forest, is a stand of trees rotated from their normal vertical alignment. [ 1 ] [ 2 ] This commonly occurs in northern subarctic taiga forests of black spruce ( Picea mariana ) under which discontinuous permafrost or ice wedges have melted, [ 3 ] [ 4 ] causing trees to tilt at various angles.
Trees can live for a long time but eventually die, either from natural causes or killed by man. Ill-health of trees can be diagnosed, and early treatment, pruning or felling to prevent the spread may result in timber stocks and amenity trees being saved. Tree owners and Arborists/arboriculturists need to be aware of the risk posed by hazardous ...
Foliage of an 'albino' redwood. An albino [a] redwood is a redwood tree which is unable to produce chlorophyll, and has white needles instead of the normal green. It survives by obtaining sugar through the connections between its roots and those of neighboring normal redwood(s), usually the parent tree from whose base it has sprouted.
Some are trees that have a weeping or pendulate growth habit; the branches still respond to gravity, but with a positive response, rather than the normal negative response. Others are the lazy (i.e. ageotropic or agravitropic) varieties of corn ( Zea mays ) and varieties of rice, barley and tomatoes, whose shoots grow along the ground.
Dead trees pose a safety risk, especially during high winds and severe storms, and removing dead trees involves a financial burden, whereas the presence of healthy trees can clean the air, increase property values, and reduce the temperature of the built environment and thereby reduce building cooling costs.
Dean Schoeppner . Sweet Gum. Sweet gum is a native shade tree that has glossy green leaves with five lobes, similar to a sugar maple.Fall color can be quite dramatic, with a combination of yellows ...
Canopy of D. aromatica at the Forest Research Institute Malaysia displaying crown shyness Trees at Plaza San Martín (Buenos Aires), Argentina. Crown shyness (also canopy disengagement, [1] canopy shyness, [2] or inter-crown spacing [3]) is a phenomenon observed in some tree species, in which the crowns of fully stocked trees do not touch each other, forming a canopy with channel-like gaps.
In trees, heart rot is a fungal disease that causes the decay of wood at the center of the trunk and branches. Fungi enter the tree through wounds in the bark and decay the heartwood . The diseased heartwood softens, making trees structurally weaker and prone to breakage.