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Tag: "pines" at biology news

Underlying cause of massive pinyon pine die-off revealed

...e underlying cause of death for millions of pinyon pines throughout the Southwest, according to new researc...nitially the trees managed, but in 2002 the pinyon pines began to die. By the end of 2003, more than 90 percent of the pinyons on the plot were dead. Breshea...

Storing carbon to combat global warming may cause other environmental problems, study suggests

...es are heavy water using evergreen species such as pines and eucalyptus, he added. However, the researchers said adding more of these plantations would also release more moisture into a region's atmosphere, as trees roots removed water from the soils and discharged some portions as water vapor emanating t...

Why Christmas trees are not extinct

...roblem. The "pipes" that carry water through firs, pines and other conifers are 10 times shorter than those in flowering trees. But a University of Utah study suggests why conifers not only survive but thrive: efficient microscopic valves let water flow through conifers about as easily as it flows through ...

Lethal needle blight epidemic may be related to climate change

... Biologists studying a lethal blight of lodgepole pines in northwestern British Columbia present strong ev...or threat to northern temperate forests. Lodgepole pines are an economically important species, being used in construction and for pulp. Alex Woods and his ...

High carbon dioxide levels spur Southern pines to grow more needles

...University study has found that maturing stands of pines exposed to the higher levels of carbon dioxide exp... most recent six years of the FACE experiment, the pines receiving elevated CO2 had on average about 17 percent more needles than untreated pines. Higher nee...

Researchers discover key gene involved in bark beetle pheromone production

...essed. The Lake Tahoe basin lost 30 percent of its pines to bark beetle infestation during the 1986-1994 drought, according to Blomquist. There are several hundred species of bark beetles, which are in the insect family Scolytidae. These beetles are difficult to control via insecticides because they live ...

Alien woodwasp, threat to US pine trees, found in N.Y.

...stablished in the United States, it would threaten pines coast-to-coast, particularly in the pine-dense sta...tes in the Southeast. One target would be loblolly pines in Georgia. Finding one bug in a trap is no small matter. Where there's one, there's likely to be m...

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