Tree line

Tree line

(also called timber line) the point on mountain or high elevations beyond which no trees grow. The line varies depending on latitude, climate and soil conditions. Also northern boundary of boreal forest.

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Part of Speech: noun
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Industry/Domain: Places
Category: Arctic
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tree line

Weather; Meteorology

The poleward limit of tree growth; the botanical boundary between tundra and boreal forest. The arctic tree line has been studied extensively, but in the Southern Hemisphere, a ...

tree line

Biology; Ecology

The highest elevation at which individual trees will grow.

tree line

Garden; Gardening

The height above which trees can no longer survive on a mountainside, or the northern or southern limit beyond which only stunted forms appear on a continent toward a pole.

tree line

Geography; Geography

Either the latitudinal or the elevational limit of normal tree growth. Beyond this limit, closer to the poles or at higher or lower elevations, climatic conditions are too severe ...

tree line

Places; Arctic

(also called timber line) the point on mountain or high elevations beyond which no trees grow. The line varies depending on latitude, climate and soil conditions. Also northern ...

arctic tree line

Weather; Meteorology

The northern limit of tree growth; the sinuous boundary between tundra and boreal forest; taken by many to delineate the actual southern boundary of the Arctic Zone.

sludge

Places; Arctic

Ice of the consistence of thick honey, offering little impediment to a ship while in this state, but greatly favoring the formation of a "bay-floe."

stream

Places; Arctic

A long and narrow, but generally continuous, collection of loose ice.

tongue

Places; Arctic

A mass of ice projecting under water from an iceberg or floe, and generally distinguishable at a considerable depth of smooth water. It differs from a "calf" in being fixed to, or ...