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K-State researchers work with university in Ghana to create biofuels from native tree seeds

A short rainy season and desertification make growing food in northern Ghana difficult enough. It doesn't help that in this western African country there is little fuel available to power tractors for planting crops or to power grain milling. Researchers at Kansas State University think that th...

Dinosaur fossils fit perfectly into the evolutionary tree of life

A recent study by researchers at the University of Bath and London's Natural History Museum has found that scientists' knowledge of the evolution of dinosaurs is remarkably complete. Evolutionary biologists use two ways to study the evolution of prehistoric plants and animals: firstly they use...

NAU research ties tree mortality trends to climate warming

(Flagstaff, Ariz.- Jan. 23, 2009) - Global warming is speeding up the mortality of trees, and Northern Arizona University research is providing some of the data to prove it. Pete Ful, an NAU associate professor in the School of Forestry and a director of the university's Ecological Restoration ...

Warmer climate causing huge increase in tree mortality across the West

CORVALLIS, Ore. Regional warming and drought stress are the "dominant contributors" to a rapid increase of tree mortality in old growth forests across the West during the past 50 years, a new report concludes, with the Pacific Northwest the hardest hit of all areas studied. The findings, to be...

Surface-level ozone pollution set to reduce tree growth 10 percent by 2100

Modern day concentrations of ground level ozone pollution are decreasing the growth of trees in the northern and temperate mid-latitudes, as shown in a paper publishing today in Global Change Biology . Tree growth, measured in biomass, is already 7% less than the late 1800s, and this is set to i...

URI researchers help score knockout punch on birch tree pest

KINGSTON, R.I. November 24, 2008 The United States has been under assault for decades by a wide variety of alien plants and animals, and it is not often that one of these aliens faces a counterpunch. But in a collaborative project with several other institutions, the University of Rhode Island ...

'Living fossil' tree contains genetic imprints of rain forests under climate change

ANN ARBOR, Mich.---A "living fossil" tree species is helping a University of Michigan researcher understand how tropical forests responded to past climate change and how they may react to global warming in the future. The research appears in the November issue of the journal Evolution . Sy...

Consumers influence christmas tree styles

RALEIGH, NC - The Fraser fir is gaining popularity among American consumers looking for beautiful, long-lasting Christmas trees. Consumers favor Fraser fir for its conical shape, dark green foliage, pleasant aroma, and excellent needle retention. Consumer surveys indicate that the shape of a tr...

MIT: Preventing forest fires with tree power

CAMBRIDGE, Mass.--MIT researchers and colleagues are working to find out whether energy from trees can power a network of sensors to prevent spreading forest fires. What they learn also could raise the possibility of using trees as silent sentinels along the nation's borders to detect potentia...

If a street tree falls... what does it take to make sound policy?

BLOOMINGTON, Ind. -- There's little debate that, when a tree falls near a city street, it makes a sound. But other questions are more difficult to answer: Who is affected by the falling tree and how? Who is liable for the damage? And who is responsible for deciding how to replace the tree? A p...

Brown tree snake could mean Guam will lose more than its birds

In the last 60 years, brown tree snakes have become the embodiment of the bad things that can happen when invasive species are introduced in places where they have few predators. Unchecked for many years, the snakes caused the extinction of nearly every native bird species on the Pacific island o...

From Canada to the Caribbean: Tree leaves control their own temperature, Penn study reveals

PHILADELPHIA - The temperature inside a healthy, photosynthesizing tree leaf is affected less by outside environmental temperature than originally believed, according to new research from biologists at the University of Pennsylvania. Surveying 39 tree species ranging in location from subtropic...

Mystery of infamous 'New England Dark Day' solved by tree rings

COLUMBIA, Mo. At noon, it was black as night. It was May 19, 1780 and some people in New England thought judgment day was at hand. Accounts of that day, which became known as 'New England's Dark Day,' include mentions of midday meals by candlelight, night birds coming out to sing, flowers folding...

Scientists decipher fruit tree genome for the first time

This release is available in Spanish . A scientific group of the Universities of Illinois (USA), Georgia (USA), Hawaii (USA) and Nakai (China), among others, have deciphered for the first time fruit genomic sequence, in this case papaya (Carica papaya), according to the cover of the last ...

World's oldest living tree discovered in Sweden

The worlds 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. For many years the spru...

Faster koa tree growth without adverse ecosystem effects

U.S. Forest Service scientists with the Institute of Pacific Islands Forestry have completed a study on ways to make high-value koa trees grow faster, while increasing biodiversity, carbon sequestration, scenic beauty and recreation opportunities in native Hawaian forests. Acacia koa is a native...

UBC discovery unlocks tree genetics, gives new hope for pine beetle defense

UBC researchers have discovered some of the genetic secrets that enable pine and spruce trees to fight off pests and disease, uncovering critical new information about forests natural defense systems. Assoc. Prof. Joerg Bohlmann says this genetic analysis will allow forest stewardship programs ...

The proof is in the tree bark

BLOOMINGTON, Ind. -- A study by Indiana University researchers found the chlorinated flame retardant Dechlorane Plus in the bark of trees across the northeastern United States, with by far the highest concentrations measured near the Niagara Falls, N.Y., factory where this chemical is produced. ...

Sunbathing tree frogs' future under a cloud

Animal conservationists in Manchester are turning to physics to investigate whether global warming is responsible for killing sun-loving South American tree frogs. In a unique collaborative project, researchers in The Photon Science Institute (PSI) at The University of Manchester have joined fo...

Early family ties: No sponge in the human family tree

Since the days of Charles Darwin, researchers are interested in reconstructing the "Tree of Life", and in understanding the development of animal and plant species during their evolutionary history. In the case of vertebrates, this research has already come quite a long way. But there is still muc...

Microscopic morphology adds to the scorpion family tree

Modern microscopy technology has allowed two scorpion biologists, Carsten Kamenz of the Humboldt University in Berlin and Lorenzo Prendini of the American Museum of Natural History, to study and document what is nearly invisible. Looking at tiny morphological features like the sculpting of the hai...

Queen's University Belfast researchers trace octopuses' family tree

The findings of a study funded by the National Environment Research Council and led by Dr Louise Allcock at Queen's School of Biological Sciences and colleagues from Cambridge University and British Antarctic Survey will be reported at a conference in Spain this week. The World Conference on Ma...

Primitive early relative of armadillos helps rewrite evolutionary family tree

A team of U.S. and Chilean scientists working high in the Andes have discovered the fossilized remains of an extinct, tank-like mammal they conclude was a primitive relative of todays armadillos. The results of their surprising new discovery are described in an upcoming issue of Journal of Vertebr...

Researchers demonstrate way to control tree height

Forest scientists at Oregon State University have used genetic modification to successfully manipulate the growth in height of trees, showing that it’s possible to create miniature trees that look similar to normal trees – but after several years of growth may range anywhere from 50 feet tall to a...

The first tree genome is published: Poplar holds promise as renewable bioenergy resource

Wood from a common tree may one day factor prominently in meeting transportation fuel needs, according to scientists whose research on the fast-growing poplar tree is featured on the cover of tomorrow's edition of the journal Science. The article, highlighting the analysis of the first complete ...

Important gene controlling tree growth and development found

Scientists at the Umeå Plant Science Centre (UPSC) and the Swedish University of Agricultural Sciences (SLU) report today about a breakthrough in our understanding of how the growth and development of forest trees is controlled. In an article published in the international journal Science, they sho...

DOE JGI sequences, releases genome of symbiotic tree fungus

The DNA sequence of Laccaria bicolor, a fungus that forms a beneficial symbiosis with trees and inhabits one of the most ecologically and commercially important microbial niches in North American and Eurasian forests, has been determined by the U.S. Department of Energy DOE Joint Genome Institute (...

Sweetgum tree could help lessen shortage of bird flu drug

The sweetgum tree grows widely throughout the country and is known for its mace-like green fruit, which are sometimes called "gumballs." Now, this spiny fruit may become an important source of a chemical needed to make a lifesaving drug against bird flu ?a drug that is currently in short supply wor...

A whole lot of shaking goin' on triggers early hatching in red-eyed tree frogs

Embryos distinguish vibrational differences, hatching early to snake attacks but not to rain At the edge of Ocelot Pond, Panama, red-eyed tree frog embryos still in their eggs are about to make a life-or-death decision. The egg clutch, a gelatinous blob clinging to a leaf overhanging the water, ...

The biggest family tree ever

Ever wondered where your family's ancestors roamed 60,000 years ago? Now you can find out by participating in the world's most ambitious project tracing the genetic and migratory history of the human race. Members of the general public from all over the world can supply their DNA to the Genograp...

Navigating in the ocean of molecules

... structures. To do this, they reduce the molecules to their characteristic scaffolds. Scaffold Hunter then orders these structures in a kind of family tree based on their similarities: the program assigns smaller 'parent' scaffolds to each scaffold by gradually removing rings from the original 'child' sca...

Climbing to new heights in the forest canopy

...s secretions, allowing them to crawl up very large tree trunks. Hook-climbers are rather less sophisticate...not need to invest their energy into building huge tree trunks to support heavy branches. Not only are the...abundance of woody vines is increasing relative to tree species, possibly as a result of human-induced cli...

Animal and plant communication at the ESA Annual Meeting

... The plants provide the ants with shelter within their hollowed-out thorns and food in the form of nectar and protein. The ants, in return, defend the tree viciously, attacking anything that comes near from other insects to birds and small mammals. One species of bug, however, has exploited this syst...

Douglas-fir, geoducks make strange bedfellows in studying climate change

...ic Northwest's largest bivalve and its most iconic tree for clues to how living organisms may have respond... Analyzed by themselves, the rings from a single tree or mollusk may sometimes reflect conditions that a... When Black first began publishing comparisons of tree rings and the otoliths or ear bones of long-live...

Large trees declining in Yosemite

... of the summer dry season and decrease the snowpack that provides much of the water for the growing season. A longer summer dry season can also reduce tree growth and vigor, and can reduce trees' ability to resist insects and pathogens." Scientists also found a shift to fire-intolerant trees in some f...

Bizarre walking bat has ancient heritage

...al relationship as a pollinator for the Hades flower, or woodrose, a parasitic plant that produces nectar from blooms near ground level at the base of tree trunks. Among other unusual traits, the bat is thought to use its teeth and claws to excavate roosting burrows and males appear to compete for mate...

Freshwater fish at the top of the food chain evolve more slowly

...rately moving bones, and lots of muscles that move those bones in a coordinated fashion." By mapping these measurements onto the centrarchid family tree together with data on what each fish eats the researchers were able to reconstruct how diet and head shape have changed over time. "It looks as if t...

New discovery suggests trees evolved camouflage defense against long extinct predator

...efences in plants." Dr Burns' team studied the leaves of the Araliaceae tree ( P. crassifolius ) a heteroblastic species which is native to New Zealand....ain. However moa were hunted to extinction 750 years ago. The Araliaceae tree has several defences which the team suggest are linked to the historic pres...

Warming climate threatens California fruit and nut production

... Winter chill, a vital climatic trigger for many tree crops, is likely to decrease by more than 50 perce...'s fruit and nut industry will need to develop new tree cultivars with reduced chilling requirements and n...only use established mathematical models to select tree varieties whose winter chill requirements match co...

Wood stoves -- a viable home heat source?

...is negligible, the only surplus coming from the harvest and transport. Based on an average growing time of 130 years before harvest for local Ontario tree species, a woodlot or forest 3.5 hectares in size would provide an indefinite supply of wood heat for a household without a net increase in carbon emi...
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