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Image 1 - Climate Change To Blame For Dead African Trees
2011-12-12 10:20:24

Trees are dying in the Sahel, a region in Africa south of the Sahara Desert, and human-caused climate change is to blame, according to a new study led by a scientist at the University of California, Berkeley. "Rainfall in the Sahel has dropped 20-30 percent in the 20th century, the world's most severe long-term drought since measurements from rainfall gauges began in the mid-1800s," said study lead author Patrick Gonzalez, who conducted the study while he was a visiting scholar at UC...

2011-11-18 02:35:24

New model offers practical information for growers, advancements for horticultural research In peach trees, as in other plants, the energy used to create carbohydrates that support growth and development comes from solar radiation through the process of photosynthesis. Peach tree productivity is therefore dependent on the tree's photosynthetic efficiency and effectiveness in distributing and using carbohydrates. A basic knowledge of carbon assimilation and partitioning concepts at the...

2011-11-18 02:29:52

Research suggests reducing deep planting can create healthier trees Many landscape trees are started in-ground, then sold as bare-root ''liners'' to producers who plant them in large containers to grow. To minimize wind damage and to facilitate transport from potting areas to growing beds, the liners are often buried deeper than necessary. This deep planting of liners results in "finished" container plants with deep structural roots, important foundations of root systems responsible for...

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...

Image 1 - Evidence Of Previously Unknown 2nd Century Drought Discovered
2011-11-05 04:48:17

Researchers with the University of Arizona (UA's) have discovered evidence of a formerly unknown, decades-long drought that occurred in the southwestern United States in the second century, the school announced in a November 3 press release. The study, which was the work of geoscientists Cody Routson, Connie Woodhouse and Jonathan Overpeck of the university's Laboratory of Tree-Ring Research, involved a study of the southern San Juan Mountains in Colorado. The region is said to be a...

2011-11-04 12:49:23

A huge "migration" of trees has begun across much of the West due to global warming, insect attack, diseases and fire, and many tree species are projected to decline or die out in regions where they have been present for centuries, while others move in and replace them. In an enormous display of survival of the fittest, the forests of the future are taking a new shape. In a new report, scientists outline the impact that a changing climate will have on which tree species can survive, and...


Word of the Day
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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