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Latest Tree line Stories

Trees Will Not Grow Up Into Alpine Level, Study Says
2013-04-11 19:27:03

Lee Rannals for redOrbit.com — Your Universe Online Scientists thought forest lines on mountains would start growing in higher elevations as the planet's temperature began to rise due to global warming, but new research out of the University of Calgary found it not to be the case. The team found local geologic and geomorphic conditions would limit trees being established at higher elevations on mountains. They wrote in the Proceedings of the National Academy of Sciences...

2013-03-06 20:20:54

Utility Reminds Customers to Call 811 before Planting Trees to Avoid Contact with Underground Electric and Gas Lines SAN FRANCISCO, March 6, 2013 /PRNewswire/ -- In recognition of California Arbor Day on March 7, Pacific Gas and Electric Company (PG&E) reminds customers to plant the "right tree, in the right place." Even trees that are small when planted may grow to heights that can interfere with overhead distribution power lines and planting any type of tree near larger,...

Image 1 - Trees On Tundra's Border Growing Faster In A Hotter Climate
2011-11-11 05:25:04

Measuring Techniques Improve–But the Implications Are Not Certain Evergreen trees at the edge of Alaska´s tundra are growing faster, suggesting that at least some forests may be adapting to a rapidly warming climate, says a new study. While forests elsewhere are thinning from wildfires, insect damage and droughts partially attributed to global warming, some white spruce trees in the far north of Alaska have grown more vigorously in the last hundred years, especially since...

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2009-11-17 05:55:00

Ancient high-altitude trees grow faster as temperatures rise Increasing temperatures at high altitudes are fueling the post-1950 growth spurt seen in bristlecone pines, the world's oldest trees, according to new research. Pines close to treeline have wider annual growth rings for the period from 1951 to 2000 than for the previous 3,700 years, reports a University of Arizona-led research team. Regional temperatures have increased, particularly at high elevations, during the same 50-year...

2009-08-13 17:02:20

New Zealand scientists say a study of climate change suggests global warming is not spurring the advancement of Earth's treelines as expected. Scientists at New Zealand's Bio-Protection Research Center said their study -- the first global quantitative assessment of the relationship between climate warming and treeline advancement -- tested the premise that treelines have been advancing since 1900 in response to global warming. Treelines are the elevation at which trees are capable of growth...

2009-08-13 10:04:31

A new study reveals that treelines are not responding to climate warming as expected. The research, the first global quantitative assessment of the relationship between climate warming and treeline advance, is published in Ecology Letters and tests the premise that treelines are globally advancing in response to climate warming since 1900.Treelines are the elevation or latitudinal limits where trees are capable of growth or survival and are considered to be early indicators of climate warming...

2009-04-22 10:23:00

HARRISBURG, Pa., April 22 /PRNewswire-USNewswire/ -- Pennsylvanians who plant a tree at their home or business can help the commonwealth reach its goal of putting one million trees in the ground statewide by 2012. Citizens can register up to three trees on the TreeVitalize Web site at www.treevitalize.net. "The TreeVitalize program is working with metropolitan communities across the state on tree plantings, and we'd also like to be able to count the new trees that homeowners plant...

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2007-03-05 16:15:00

Forests of spruce trees and shrubs in parts of northern Canada are taking over what were once tundra landscapes--forcing out the species that lived there. This shift can happen at a much faster speed than scientists originally thought, according to a new University of Alberta study that adds to the growing body of evidence on the effects of climate change. The boundary, or treeline, between forest and tundra ecosystems is a prominent landscape feature in both Arctic and mountain...