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Ecology

Contributors in Ecology

Ecology

Pollard

Biology; Ecology

A tree cut back to the trunk to make its branching or foliage denser. Also, an animal without horns (e.g., a sheep).

Interstem

Biology; Ecology

A piece of stem grafted between the scion and the stock for improved root strength, bark, and flowers. See Grafting.

Prairie

Biology; Ecology

An extensive, uncultivated tract of level or rolling grassland with no or few trees. Its soils are usually fertile.

Richness

Biology; Ecology

The number of diverse species occupying a particular area. A sample with 50 species is richer than a sample with 5.

Cone of depression

Biology; Ecology

The drop in the water table near an overused well, resulting in a cone-shaped dry zone called an area of influence.

Growing season

Biology; Ecology

Traditionally, the period between the last freeze in the spring and the first frost in the fall. Varies by location.

Days to maturity

Biology; Ecology

The number of days between planting the seed and first harvest. In politics, the end of the current geological age.

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