Tag: "land" at biology news
From Corn Rootworms To Art, Cornell's Reactor Is At The Core
...nlike X-rays, without activating the emulsion) and land
on a conversion screen (made of the rare-earth metal gadolinium) that absorbs them. The metal screen emits an electron for every neutron it absorbs, and that activates the emulsion and produces the photographic image on film. The result looks like a...
Transgenic Rice Plants Resist Insects, Drought And Salt Damage
... growing for at least 30 years, and essentially no land
is left for agricultural expansion," he said. "Di... and help farmers to produce more food on the same land
while causing less environmental damage."...
Ocean Sediments Contain Record of Past Vegetation Fires in Africa
...nd its immense effect on vegetation, and therefore land
ecosystems," says Connie Sancetta, program directo...ogram. The burning of trees and grasses on land
produces charred particles, or charcoal. Charcoal may then be transported long distances by winds a...
Study Shows Songbirds Switch From Bugs To Berries To Fuel Fall Migration
...ation decisions. But Parrish urges private coastal land
owners to be good land
stewards too."Conserving native habitat in a backyard is simple and inexpensive," he said."Native sh...
Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'
...'sstudies have shown that that mahogany seeds must land
upon temporary clearingscreated by high winds and subsequent fires. They must then compete for survivalwith other plant species also taking root there. "They apparently co-evolved with disturbance, which is very commonin forests," Snook said in an i...
NCAR Scientists Trek To Africa For Biosphere-Atmosphere Chemistry Study
...ial support for EXPRESSO. With its vast expanse of land
near the equator, Africa exerts a powerful influence on tropical and global air chemistry. Huge stretches of African savanna and rainforest are burned each fall and winter for agricultural and territorial purposes. The fires produce large amounts of ...
Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms
...on the possible consequences of global warming for land
plants. Drilling an Ice Dome in West Antarctica Fast-flowing ice streams, analogous to rivers, drain part of West Antarctica's ice sheet out to the floating Ross Ice Shelf, and hence to the sea. How permanent is this ice sheet, which is ac...
Scientists Trek to Africa for Biosphere-Atmosphere Chemistry Study
...e cycles." Africa with its vast expanse of land
near the equator, exerts a powerful influence on tropical and global air chemistry. Huge stretches of African savanna and rainforest are burned each fall and winter for agricultural and territorial purposes. The fires produce large amounts of hydro...
Cornell Scientists Find Way To Boost Rice Crop Yield -- They'll Walk On The Wild Side
... yield -- it's plateaued. So, instead of boosting land
mass -- which we can't do -- we're manipulating the plant's genetics." In the case of rice, there has not been a significant yield increase in two decades. Yet the world's agriculturists are using only 25 percent of the genetic diversity available. ...
KU Researcher Eyes The Rain Forest Through The Trees
...apitalize on native species and return the cleared land
back to its native foliage. Terwilliger starts her... she said. "When that didn't work, they turned the land
to pasture." Pine and eucalyptus trees are not necessarily native to tropical regions. They are usua...
Researchers Develop Model Using Birds As Indicator Of Wetlands Health
...etlands aswell as three Cincinnati parks for a dry land
comparison. Colemanused his own observations as well as the records of well-knownbirders. With Styer's help, the two then developed a mathematicalformula which can be used to evaluate the ecological condition ofwetlands. When they tested the model, t...
Scientists Discover Smallest Frog
...are so small, less than 10 percent of the island's land
area," says Hedges. "They are now being cut down at an increasing rate, mainly for subsistence farming and cooking fuel. We still have an incomplete knowledge of the biodiversity on this planet, including areas like Cuba that are very close to the ...
Christmas Bird Count: Another Holiday Tradition
...view the results of thousands going out across the land
to remote sites, regardless of the weather, carefully recording their observations so that future Americans can better understand the changes in our bird populations. And next year, you can join the program and become a trained observer thro...
The CIA Would Like To Know What Scientists Are Seeing Over The Rainbow
...ars after Dorothy left gray Kansas for the vibrant land
of Oz, wizards of a different sort have concocted a powerful new way to visualize the full set of human chromosomes in a rainbow of colors. The new technique, called "spectral karyotyping," translates computer-gathered light waves into a full-color ...
U.S. Geological Survey 1998 Budget: Increased Support For Drinking Water, Earthquakes And Biological Sciences
...increasing biological science in supportof federal land
managers. "The next century will make extr... Federallands and increase technical assistance to land
managers in InteriorDepartment agencies. New research and monitoring will focus on pacificsalmon and...
Purdue Researchers Prod Plants To Clean Up Pollution
... of the Chernobyl fire, then fell and contaminated land
around the blown reactor. In humans, radioactive strontium can cause bone tumors and, possibly, leukemia. Webb hadn't set out to clean up radioactive waste. Her work started with calcium, but led to strontium. She was, and still is, fascinated by the...
Restoring Farm Land To Natural Wetlands Key To Stemming Flood
...ways there," he said, which led him to wonder what land
usesthe systems of levees had replaced. Subsequent research prompted by thatquestion revealed a deep history, which, Schneider said, is not well-known.He chronicled that history in "Enclosing the Floodplain: Resource Conflicton the Illinois River, 18...
Hot 'Lanta: NASA, School Kids Team To Study How Trees Help Cities Keep Their Cool
...iment is part of a larger study of past and future land
use impacts on climate and air quality of Atlanta. In turn, it may help cities reshape themselves for comfort - and lower heating bills - and help developing ...
Hopkins Engineering Undergrads' Inventions: Power Tools For Double Amputee, Military Surveillance Robot
...ificance forHumphries, who lost his legs in a 1991 land
mine explosion whileserving with the U.S. Army in northern Iraq. Prosthetic limbshave restored much of his mobility, and he was anxious to helpRickels regain some independence as well. "It's really rewardingto see how we've helped the guy out," says ...
First Planned Release Of Captive Lemurs In Madagascar Wilds Expected In Fall
...tropical rainforests. They cannot adapt to cleared land
or secondary forest.They are also among the most well-known lemurs, beautiful, striking, andvocal." Despite the species' severe decline in the wild, these lemurs have beenfound to breed very successfully in captivity, Katz and Welch said. More than...
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