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Why Do Autumn Leaves Bother to Turn Red?
Soils may dictate the array of fall colors as much as the trees rooted in them, according to a forest survey out of North Carolina. view more (2007-10-26)
New Southern California beetle killing oaks
U.S. Forest Service scientists have completed a study on a beetle that was first detected in California in 2004, but has now attacked 67 percent of the oak trees in an area 30 miles east of San Diego. view more (2009-05-04)
Study of alternate bearing presents recommendations for citrus growers
Alternate bearing (also called biennial or uneven bearing) is the tendency of fruit trees to produce a heavy crop one year (called "on-crop") followed by a light crop or no crop the following "off-crop" year. view more (2009-11-03)
Loss of Hemlocks Will Affect Water Dynamics in Southern Appalachian Forests
Forest Service (FS) research has provided the first estimates on the impact the loss of eastern hemlock will have on the water dynamics of the southern Appalachian mountains. view more (2007-07-10)
World's oldest living tree discovered in Sweden
The world's oldest recorded tree is a 9,550 year old spruce in the Dalarna province of Sweden. The spruce tree has shown to be a tenacious survivor that has endured by growing between erect trees and smaller bushes in pace with the dramatic climate changes over time. view more (2008-04-17)
Cougar predation key to ecosystem health
The general disappearance of cougars from a portion of Zion National Park in the past 70 years has allowed deer populations to dramatically increase, leading to severe ecological damage, loss of cottonwood trees, eroding streambanks, and declining biodiversity. view more (2006-10-25)
Amber reveals ecology of 30 million year old spiders
Scientists at The University of Manchester and the Manchester Metropolitan University have carried out the first comparative scientific study of ancient spiders trapped in amber more than 30 millions years ago. view more (2006-03-01)
Citrus greening continues to spread in citrus growing areas
The latest on the rapid spread of citrus greening within Florida and its potential to spread into California and other citrus growing areas will be presented during a news conference on plant diseases and issues that are of importance to California's economy and agriculture. view more (2007-07-11)
Drought limits tropical plant distributions, scientists at the Smithsonian report
Drought tolerance is a critical determinant of tropical plant distributions, researchers working at the Smithsonian Tropical Research Institute in Panama report in the journal Nature, May 3. view more (2007-05-03)
Pecan trees benefit from thinning technique
Pecan trees, like many fruit trees, have a tendency to bear fruit in cycles, producing a large crop in one or two years, followed by one or two years with little or no crop. view more (2009-11-04)
'Green Clean:' Researchers Determining Natural Ways To Clean Contaminated Soil
Researchers at North Carolina State University are working to demonstrate that trees can be used to degrade or capture fuels that leak into soil and ground water. Through a process called phytoremediation - literally a "green" technology - plants and trees remove pollutants from the environment or render them harmless. view more (2009-09-18)
Carbon and oxygen in tree rings can reveal past climate information
The analysis of carbon and oxygen isotopes embedded in tree rings may shed new light on past climate events in the Mackenzie Delta region of northern Canada. view more (2009-12-04)
Long-term apple scab resistance remains elusive, Purdue expert says
There are hundreds of choices when picking a crabapple tree from the nursery, but a Purdue University expert says only a handful are resistant to a widespread fungus or other serious diseases. view more (2009-06-26)
Transgene Aspen And Cloned Karelian Birch
Long ago genetic engineering got deep reach into pharmacological and food industry, agriculture and medicine. The trees are no exclusion, but genetic engineers started to deal with them approximately ten years later than with other objects: the trees are too difficult for genetic investigations and manipulations. The wood plant genetic engineering... view more... (2003-06-16)
'Smart' sunglasses and goggles let users adjust shade and color
Imagine a single pair of glasses with lenses that can be transparent or dark, and in shades of yellow, green or purple, all on command. A new lens with chameleon powers promises to dramatically improve sunglasses' function. view more (2007-03-28)
Scientists discover that ancient genes dictate flowering, fall bud set
It often requires many years of growth before a tree is ready to flower - a delay that makes tree breeders impatient. Now, scientists at universities in Sweden and the United States have discovered genes that are responsible for initiation of flowering. view more (2006-05-05)
Research synthesis shines light on several management options after fires in diverse ecosystems
No single decision-support system exists for selecting alternatives for postfire management. That thesis is what a recently released report on management after fire hinges upon. The publication, Effects of Timber Harvest Following Wildfire in Western North America, tells us that the type of forest landscape determines the ways fire and logging may... view more... (2009-03-20)
Research ties tree mortality trends to climate warming
Global warming is speeding up the mortality of trees, and NAU research is providing some of the data to prove it. view more (2009-01-26)
Tree-Killing Fungus Officially Named by Scientists
The USDA Forest Service Southern Research Station (SRS) today announced that an SRS scientist and other researchers have officially named the fungus responsible for killing redbay and other trees in the coastal plains of northeastern Florida, Georgia, and South Carolina. view more (2008-07-01)
FibroTest attributes to generate decision trees in hepatitis C
In recent years the use of non-invasive biomarkers to assess liver fibrosis has become widely accepted. view more (2009-06-15)
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