Shrubs more expansive than trees

Shrubs are more widespread than trees in nature and on Earth. A new study explains their global success. It turns out that the multiple stems of shrubs are of key importance. This feature contributes to both better growth ...

A changing season means a changing diet for bison, study finds

North American bison adjust their diet seasonally in order to take full advantage of the growing season when grasses become less nutritious, a new study led by researchers at the University of Colorado Boulder has discovered.

Songbirds find success nesting in introduced shrubs

We all like things that are bad for us sometimes, and birds are no different. When a bird or other animal makes choices that are actually harmful for it, by reducing their lifespan, reproductive success, or something else, ...

Walden trees leafing out far earlier than in Thoreau's time

Climate-change studies by Boston University biologists show leaf-out times of trees and shrubs at Walden Pond are an average of 18 days earlier than when Henry David Thoreau made his observations there in the 1850s. However, ...

Warm winters let trees sleep longer

In the temperate zones, vegetation follows the change of the seasons. After a winter pause, plants put out new growth in spring. Research has now brought a new correlation to light: The colder the winter, the earlier native ...

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