Humble Pocket Gophers Shed Light On The Genetic Fortitude Of Cheetahs
...t gopher, Thomomys bottae, from Humboldt County in northern California and a third group from the Carmel Valley. Gophers within each of the northern populations were so similar genetically that a DNA fingerprinting analysis by coworker David Foran c...Asian Beetle, New In This Country, Threatens Brooklyn's Shade Trees
...evastating trees in the Greenpoint neighborhood of northern Brooklyn. U.S. border entrances are jealously guarded to keep such pests from infiltrating this country. This beetle's anthology: Native to Japan, Korea and the southern sections of China, this is the first time this beetle has been seen outside of...Study Shows Songbirds Switch From Bugs To Berries To Fuel Fall Migration
...lyworldwide. Fragmentation and destruction of both northern breeding and tropicalwintering habitat have been considered the most likely explanations. However,the Brown study suggests important aspects of the birds' migration biology mayhave been overlooked. "Many of these migrant birds behave very differentl...Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'
...yred and then shed, mimicking the autumn ritual of northern deciduous trees.Before their leaves fall, mahogany crowns' distinctive color allows timbercompanies to spot marketable mahogany trees from overflying aircraft, Snooksaid. Because the growth rings of mahoganies she has examined don't form at annualin...NCAR Scientist Models Earth's Climate and Vegetation Patterns At Last Glacial Peak
...ra covering most of Europe. Desert spread into the northern Rocky Mountains. A wetter Southwest still bore mostly desert plants, while the Pacific Northwest dried slightly. Forests gave way to tundra and polar desert in Alaska. Worldwide, the biggest vegetation changes occurred in central Asia, where needle-l...NCAR Scientists Trek To Africa For Biosphere-Atmosphere Chemistry Study
...from the northeast CAR (around 8 degrees N) to the northern Congo (around 2 degrees N). This fall's campaign is focused at two sites: one in rainforest near the Congo's Nouabale-Ndoki National Park and the other in the rainforest-savanna transition zone near Bangui, the CAR capital. EXPRESSO is collecting che...No Such Luck: Nitrogen From Air Pollution Unlikely to Moderate Global Warming
...eric deposition rates in eastern North America and northern Europe. Most of the lost nitrogen leaked into groundwater as nitrate, a pollutant and human health threat throughout the Midwest. The nitrogen-driven loss of diversity and rise of "weedy" species in grasslands are comparable to the well-docu...Bottom-up Ecological Processes Better For Clear Waters, Study Finds
...eticalecologist at the University of Umeå in northern Sweden. The modelpredicts that food webs will respond to increased growth at the plant level,such as algae, in different ways depending upon the number of levels inthe food web. In the experiments summarized in the UC Davis analysis in Science, the ...... 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 Humphries, 26. "Justbeing able to do things without someone...Coming Extinction Of One Of UK's Most Minuscule Plants Yields Information On Climate Change
... widely distributed in the higher latitudes of the northern hemisphere - in Norway, the Faroes, and Iceland. It also occurs around the south pole in places such as Tierra del Fuego. Dr Barry Meatyard from the University of Warwick's Institute of Education is directing a project to monitor the growth of the...Scientists To Study Effects Of Global Warming On Wetlands
...e, and the radiative and thermal energy balance of northern peatlands under a changing climate. "The central hypothesis," said Chen, "is that climate caused heatloading and water-table depth will determine plant community and ecosystem structure and function in peatlands, which in turn will have a fee...Planned Burning In Forests A Boon To Several Species Of Birds In Illinois
...ed almost 2 percenta year since 1966 -- as well as northern orioles, summer tanagers, rose-breastedgrosbeaks and great crested flycatchers. The findings may be welcome news for conservationists wanting to restoreoak savannas forests with open canopies that allow light to shinethrough easily. Years of ...Purdue Study Finds Prehistoric Couch Potato
..., with the southern dinosaurs lagging behind their northern relatives in aerobic fitness for tens of millions ...he says. "The South Americans caught up with their northern relatives only in the later Cretaceous, or about 70 million years ago." He will present his findings...Disease Takes Its Toll On Waterfowl Populations
...ear 92 million ducks will migrate south from their northern breeding grounds. Many factors will challenge the...in flyway staging sites in southern Canada and the northern U.S. Dr. Creekmore is a wildlife disease biologist at the U.S. Geological Survey's National Wildl...Remote Cloud Observatory Tracks El Niño Changes
...ormally arid states as Arizona and New Mexico. The northern tier of NorthAmerica becomes warmer and the southern tier becomes colder. The Southwest,Midwest and Southeast become wetter. The Northeast is little affected by ElNiño. In the Western Pacific, El Niño causes severe drought, whi...Wake Forest University Study Takes Students In Flight With The Albatross
... classroom learning. Each time they pass over the northern Pacific, the Argos System's satellites scan for the signals emitted by the seabirds' transmitters. If a positive contact is made, the satellite notes the strength of the signal and then locks in the latitude and longitude, time and other data a...Handfish Steps Back From Brink Of Extinction
...being investigated is the spread of the introduced northern Pacific Seastar throughout the Derwent Estuary. This may be as a result of starfish feeding on egg masses or disturbing seabed communities. However, habitat modification through urban, rural and industrial development of the Derwent system are ...Detective Work Uncovers New Tick-Borne Disease In North Carolina And The Southeast
...by the CDC in1995, the majority, by far, came from northern states where the diseaseis carried by the deer tick, which isn't prevalent in the South. Yet similarrashes were also reported by physicians from southeastern states, includingNorth Carolina. But the CDC was unable to isolate the microorganism thatcau...Recovery From Mass Extinction Is Unexpectedly Diverse
...estigated the collections of molluscan fossils for northern Africa and India. Jablonski found that the Gulf Co... all four regions. Studies of therecovery rates in northern South America could determine whether proximity tothe impact site was a determining factor. "These r......e tendency to be aggressive could be introduced in northern areas in European bees even if the Africanized bees do not expand their territory." This would be bad news for beekeepers, because the Africanized honey bees are quite troublesome. Among the problems: Africanized bees bring concerns about liabilit...