Tag: "oak" at biology news
Children Become Gorillas In VR Zoo
...silverback male resting in the shade of an immense oak
tree. At first, he simply glares at the youngster as she playfully lungesat him and strikes aggressive poses she's learned from the others. Butwhen his stares and annoyed coughs go unheeded, he suddenly charges thejuvenile, screaming and beating his...
First-Of-A-Kind Study By University Of Georgia Ecologist Estimates Role Of Natural Forces On Insect Populations
...f two insect species, the winter moth andthe green oak
leaf roller moth, that feed on English oaks inWyth... it showed asteady and marked decline in the green oak
leaf roller moth thatthe British researchers could not explain. Whatever the reason,Varley died in 1...
More To Drought Than Meets The Eye
...According to leaf response, pignut hickory and red oak
are considereddrought-tolerant species in riparian...owth reductions in that area. In the valley, black oak
andred maple both suffered large and frequent growth declines during drought, butare considered mode...
Oak Regeneration In Some Ohio Forests Is Failing, Researchers Find
...edented in moderntimes. Scientists studied oak
regeneration in several mixed-oak forests inSouthe...sity and elsewhere hadindicated that the number of oak
seedlings in these forests was low compared tothe number of mature oaks in the forest canopy, also c...
Oaks' Defenses Help Gypsy Moth Caterpillar Fend Off Virus
...oth caterpillars, the virusthat kills them and the oak
leaves they feast on is more complicated thanexpec...ntomologist. "We know that the tannins in oak
leaves inhibit gypsy moth growth, butthat they also provide protection against the nuclear polyhedro...
Planned Burning In Forests A Boon To Several Species Of Birds In Illinois
CHAMPAIGN, Ill. -- Intentional burning in oak
savannas is helping manybird populations, such as the red-headed woodpecker, based on preliminaryfindings of a three-year study in Illinois. "In the Midwest, the conservation status of birds associated withsavannas and open woodlands has not been pr...
Ameriflux Network Will Track CO2 Transfer In Forests
...tand of hardwoods---mostlyaspen, red maple and red oak
with some white pine. Sensing instruments will beinstalled at various levels on the tower from above the forest canopy to groundlevel. Beginning in July 1998, scientists at the Biological Station will begincollecting data from the instruments and r...
UC Scientists Search For Alternatives For Methyl Bromide
... Researchers at UC Davis are investigating whether oak
root fungus can be managed by modifying irrigation practices. "We're trying to find a middle ground," said plant pathologist David Rizzo, who, with water relations scientist Ken Shackel, have set up an experimental pear orchard at the Armstr...
Survival Of The Yellowstone Grizzlies, Ferns As Forest Filters And The Role Of Worms In Climate Change: The April Edition Of Ecology Is Now Available
... say the researchers, the ultimate survival of the oak
seedlings did not differ between fern and fern-freeareas. By contrast, the birch seedlings were highly affected, with only onethird of the birches under the ferns surviving after two years. Shade providedby the fern fronds was the main determining f...
Clemson's Baruch Forest Science Institute tracks forests' recovery from hurricane
...um and black gum instead of the "climax"species of oak
or tupelo. But the mix of species is expected to ...ly to survive when hurricaneshit. The live oak
is low and squat, with wood as hard as steel, so it keepsits head down and lets others take the brun...
Chemical discovered that causes plant tumors
...e researchers said. The round scabs often found on oak
leaves are one example. But this process often actually works to the benefit of the insects that interact with these plants, Doss said, so in various natural systems it's not clear that there is any single evolutionary explanation for the formation o...
UC Davis expert identifies oak-tree killer and warns public to use caution
A swimming, two-tailed fungus with an appetite for oak
bark is probably to blame for the death of thousan... deadly microbe could spread to the nation's other oak
forests, a UC Davis plant scientist said today. The fungi move around by spores that can easily trav...
Researchers study oldest oak east of the Mississippi
ATHENS, Ohio - Studies of a 373-year-old white oak
found in an Ohio old-growth forest suggest it is t...thy said. While the discovery of a 373-year-old oak
tree is important, McCarthy said he believes there are many trees in Dysart Woods that may be even o...
With its key role in plant maturation, a newfound gene could yield a novel class of genetically modified crops
...venile plant. A marked difference is also seen in oak
and beech trees, where only the upper, adult branches drop their leaves in autumn. The lowermost, juvenile branches retain their dead leaves throughout the winter....
Science paper suggests strategy to more effectively control harmful ozone
... U.S., for instance, the hydrocarbon isoprene from oak
trees contributes a substantial amount of very reactive VOCs to the atmosphere, say the Science researchers. To determine if all power plant emissions are equal culprits in ozone formation, the research team used data collected by aircraft flying...
Battle to save last stronghold of the red squirrel
... Suggested plans to replace the felled trees with oak
in parts of Kidland forest would also have affecte...urvival of the red squirrel. Broadleaf trees like oak
are a source of food for the grey squirrel, which can out compete and replace the native reds. The n...
New killer stalks California forests
... coastal counties. Thousands of beautiful, stately oak
trees have died, or are dying, from a new disease ...Sudden Oak Death, appears to infect more than just oak
trees and scientists are worried that they may have an emerging epidemic on their hands. At the upco...
Prescribed burning may threaten ground nesting birds
Prescribed burning could be a good way to restore oak
forests in the eastern U.S. -- but it might also have some unwanted ecological effects. The first study of bird recovery after prescribed burning shows that it can reduce populations of ground-nesting birds. This work is presented in the October iss...
Plant scientists work to protect U.S. from foreign diseases
...most scenic areas, thousands of beautiful, stately oak
trees are dying from a new disease never seen before in the U.S.; and scientists have few clues about how to stop it. In Florida, more than $200 million has been spent trying to control Citrus canker, another plant disease new to this country. Yet, d...
Study: tree coring seems to be quicker, cheaper method of measuring radiation
...astic. By testing the sapwood the living parts of oak
trees he cored close to the site -- he has found a definite bulls-eye pattern around the site where the concentration goes up the closer one gets to it. Bulleri took all their samples on public and private lands surrounding the facility, which used ...
1 2 3