U.S. forests changes are double-edged sword for environment

Climate change, nitrogen deposition and fire suppression are leading to shifts in the types of trees that dominate American forests. These changes will have environmental consequences, potentially positive and negative, according ...

Large and branched root systems can speed up growth of spruces

The growth rate of trees varies: some trees grow slower and others faster by nature. The amount of nutrients and water a tree receives depends on its root system and the symbiotic mycorrhizal fungi growing in the root system. ...

Researchers unravel the age of fine tree roots

The researchers at the Swiss Federal Research Institute WSL used thin sections of roots less than two millimetres thick to identify the tree rings of several hundred spruce (Picea abies), pine (Pinus sylvestris), beech (Fagus ...

Tropical tree roots represent an underappreciated carbon pool

Ask someone to draw a tree and s/he will invariably draw a trunk and branches—leaving the roots out of the picture. In a unique study of tropical tree roots at the Smithsonian Tropical Research Institute published in PLOS ...

Downed trees not necessarily a lost cause

Among the devastation wrought by Hurricane Irma last week, many downed trees and uprooted plants were left in the storm's wake. Those in a rush to get things back to normal have been quick to break out the chainsaws and remove ...

Deep roots in plants driven by soil hydrology

Searching for water, some tree roots probe hundreds of feet deep and many trees send roots through cracks in rocks, according to a new study led by a Rutgers University-New Brunswick professor.

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