Tag: "trees" at biology news
Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey
... "That level of precision, based on the fact that trees
put on a single growth ring per year, is unique." ...s worldwide. Rings from American bristlecone pine trees
revealed extensive frost damage attributable to the eruption. But in the desert conditions of the Ne...
Southern Pine Beetle Reaching Outbreak Levels In North Florida
...outbreak in Gainesville in 1994 saved thousands of trees
in the urbanforest, minimized use of pesticides an...mes have problems cutting down infested pines. The trees
arestill green and they have a tendency to want to try to save a tree, whenactually, the tree is alr...
Honeybees In The Wild Nearly Gone In North America
... Infruit, apple, cherry, crab apple, plum and pear trees
will bedramatically affected, he said. In vegetables, cucumbers, cantaloupes,watermelons, pumpkins, and squash will be hardest hit. At the same time, consumers will notice the effects of the honeybeedecimation in higher fruit and vegetable prices at ...
Bark Beetle Infestation Spurs Multifaceted Study
...n times moredense than the original forests. These trees
now compete intensely for resources,especially wat...ce of fire which thinsforests, has predisposed the trees
to the beetle attack which is now killingthem off. However, before salvage logging or controlled b...
Ocean Sediments Contain Record of Past Vegetation Fires in Africa
...s climate dynamics program. The burning of trees
and grasses on land produces charred particles, or charcoal. Charcoal may then be transported long distances by winds and rivers to coastal and ocean environments, where it's then preserved in ocean sediments. Explains Verardo, "Charcoal may be swe...
Asian Beetle, New In This Country, Threatens Brooklyn's Shade Trees
...mful to humans. However, it was found devastating trees
in the Greenpoint neighborhood of northern Brookly... it got here from Asia," Hoebeke said. "As if the trees
in an urban environment are not traumatized enough as it is. This doesn't bode well for a tree that...
Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'
...will notbe a simple matter. While mature mahogany trees
normally grow in thick woods, she has foundno evid...dlings will successfully grow in the shadeof other trees
-- mahogany trees
included. Snook is deeply concerned about the "mahogany deserts" she saidare bein...
NCAR Scientist Models Earth's Climate and Vegetation Patterns At Last Glacial Peak
...h America and Africa, as now, but there were fewer trees
globally. The whole world was colder in both summer and winter, with a global average temperature four degrees Celsius lower than now and atmospheric carbon dioxide (a greenhouse gas) at just over half of today's levels. Felzer's study checks the NCA...
Plants Have Future As Environmental Clean-Up Agents
...o anattraction. Feyerharm said the planting of the trees
will helpcontrol erosion problems and attract wildlife, something traditionaltreatments wouldn't do. "We think this a no lose opportunity for us," Feyerharm said. Erickson and Davis, along with other K-State professors, arecontinuing research into ...
KU Researcher Eyes The Rain Forest Through The Trees
...liger believes that if countries realize they need trees
for growth and survival, they can capitalize on na...I am interested in the ranges of environments that trees
of a similar species can occupy." The lab was developed with a grant from the National Science Found...
Pinpoint Gene Control Holds Promise For Nervous System Studies
...termine how our brains are wired. For example,like trees
shooting out their roots in search of water, neuronsin one part of the brain, the basal forebrain, send theirprojections in search of NGF to the hippocampus. The team plansto study the effect of increased NGF in the hippocampus on theseneurons. One a...
Bigger Biology Tackled Through Keyboards
...ther than distant individuals -- whether these are trees
competingfor light or individuals spreading disease. For example, the evolution of altruism has long intrigued biologists. Whywould an organism intent on spreading its genes on to the next generationrisk anything by helping another organism. Well, c...
A Phoenix From A Ring Of Fire Is A Pattern For The Recovery Of Mount St. Helens
...rest, with fruit-laden fig trees, deep- buttressed trees
with draped creepers, and about 300 species of flowering plants. Within a century, says Edwards, Mount St. Helens similarly will present the appearance of an undisturbed, subalpine wilderness. Already, he says, the mountain is being rev...
Isle Royale Moose Continue Decline
...t end of the island. Interestingly, he says, those trees
grew up when wolves had reduced the moose herd to 700-800 animals back in the 1970s. Under the best conditions, mountain ash, aspen, and willow are the favored browse species of moose, but when those species are not available, moose will turn to bals...
Hot 'Lanta: NASA, School Kids Team To Study How Trees Help Cities Keep Their Cool
... with planting a few trees
downtown and using the same observation techniques...ta will help paint a picture of how the city - and trees
- affect local weather and airconditioning bills. "Urban forests are important to keeping cities co...
First Planned Release Of Captive Lemurs In Madagascar Wilds Expected In Fall
...s long as it takes for them to reliablylocate food trees
in the area. As they do that, we'll reduce and eventuallyeliminate the food we give them." They will also be equipped with radio collars so that Welch and otherfield researchers can track their movements. Both he and Katz hope thisfirst attempt will...
First-Of-A-Kind Study By University Of Georgia Ecologist Estimates Role Of Natural Forces On Insect Populations
...ublished their information as averages for all the trees
anddidn't consider each tree as an individual. Sec...ased their work on larval densityestimates for the trees
in Wytham Woods, using water-filled traysunder each tree. Larvae were captured in the trays as they ...
More To Drought Than Meets The Eye
... Conventional measures of drought tolerance in trees
include adaptationsdeemed necessary to conserve or... "It appears that the drought tolerance ranking of trees
in CentralPennsylvania based on ecological distribution or leaf physiology during droughtis not an i...
Oak Regeneration In Some Ohio Forests Is Failing, Researchers Find
ATHENS, Ohio -- Oak trees
in some Southeastern Ohio forests are failingto re... mature oaks in the overstory will be replacedwith trees
that are faring well in the understory, such as maple or Americanbeech. "The entire biologi...
Oaks' Defenses Help Gypsy Moth Caterpillar Fend Off Virus
...n the College of AgriculturalSciences. Oak trees
make more tannins when gypsy moths chew on them and thetannins slow caterpillar growth, reduce the number of eggs and lead to lesssuccessful young. The trees' response should be inhibiting the caterpillar, butit takes much more virus to kill the cate...
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