Tag: "southern" at biology news
National Science Foundation awards $2 million grant to UC Riverside
...res. "Nitrogen deposition occurs at high levels in southern
California, and is fertilizing our wildlands," All...he arrival of the first European settlers, but the southern
California coastal sage scrub and deserts have been experiencing weed invasions primarily in the las...
Old bones unearth new date for giant deer's last stand
...ed out of Europe, seem to have taken refuge in the southern
Ural mountains near the Black Sea. The next question we need to address is what finally killed them off, whether it was hunting, agricultural clearing of land or changes in climate or vegetation." Up until 20,000 years ago the giant deer, Megaloceros...
Is more better: Counting birds may only tell part of the story
... populations. The black-throated sparrow in southern
New Mexico prefers mesquite savannas, but has low ...ime, some species adjust to these disturbances. In southern
France, Eurasian eagle owls were more productive and abundant in areas where long-term human activit...
New technique targets pesticide-resistant insects
...rk." "Similar results were obtained from trials in southern
Spain with highly resistant white flies (Bemisia tabaci)." Since resistance to pesticides first emerged in insect pests, more than 500 species of insects and mites have developed tolerance to chemicals 3 including pesticides regarded as being env...
Four new vertebrate fossil finds in Ischigualasto, Argentina
...e Triassic," added Alcober. "It seems that, in the southern
part of the prehistoric supercontinent Pangea anyway, the Triassic-Jurassic extinction was not as catastrophic as apparently documented in the north." The new dinosaur was an herbivore with a long neck and four stout legs, measuring no longer than f...
Look at past sea-level rise points to troubling future
...drill cores and take underwater soundings from the southern
shores of Texas to Alabama's Mobile Bay. Analyses have begun to yield a catalogue of reactions that Gulf coastal features undergo in response to specific rates of sea-level rise. "We know that Sabine bank, a seafloor formation about 20 miles offshore...
Insecticide resistance in mosquitoes being studied
...e it. Larvae of Culex quinquefasciatus, or the southern
house mosquito, are being collected in the Houston...rantonio, Experiment Station entomologist. The southern
house mosquito is the primary vector for viruses causing St. Louis encephalitis and West Nile enceph...
Avian cholera could spread from Great Salt Lake
...era has recurred almost annually in several areas: southern
Saskatchewan, California's Central Valley and Klamath Basin, the Texas panhandle and rice belt, the Rainwater Basin of Nebraska, and in the Mississippi and Missouri River drainages. For more information on avian cholera, go to http://www.nwhc.usgs.g...
Ancient fossil offers new clues to brown bears past
...rown bear fossils south of Beringia, in areas like southern
Canada and the northern U.S., are about 12,000-13,...lain was the ancestry of modern brown bears in the southern
part of their range, in places like southern
Alberta, British Columbia, Montana, and Idaho," said Ma...
Plankton cool the southern hemisphere
...ton have the greatest effect on the climate in the southern
hemisphere, even though the majority of plankton a... effect of these on the climate is greatest in the southern
hemisphere. Plankton can influence the climate by producing the gas dimethyl sulphide (DMS). This g...
New bulls may revive the Texas state Bison Herd
...New Mexico, eastern Colorado, Kansas, Oklahoma and southern
Nebraska. No other animals but those from Texas have been brought in. "What we didn't want to do is bring animals in from outside," he said. Also, the historical link to Goodnight made researchers reluctant to tamper with the herd too much, he said...
Census of Marine Life - Discoveries and Highlights 2004: Scientists add 4m+ records, 13,000 species
... And the researchers say such rates are higher in southern
and Pacific oceans where research has been less intensive. "We have barely skimmed the surface," says Dr. J. Frederick Grassle of Rutgers University, who directs the OBIS Secretariat and chairs the Census' International Scientific Steering...
Say goodbye to Rudolph and other reindeer if global warming continues
...Grayson, lead author of the study. "The number of southern
reindeer will diminish dramatically as their range...ippi in the southeastern United States and in into southern
Idaho in the West. Grayson said the idea of looking at summer temperature as a driving factor in de...
A complex agricultural society in Uruguay's La Plata basin, 4,800-4,200 years ago
...s' farmers adopted the earliest cultivars known in southern
South America, including maize, squash, beans and ...l tradition previously unknown from this region of southern
South America. The formal and compact layout of the central part of the site (Inner Precinct) consis...
U. of Colorado research team discovers life in Rock Glacier
...red evidence of microbial life in rock glaciers in southern
Colorado and in Wyoming, said Knauf. Other CU-Boulder researchers involved in the study include INSTAAR Fellow Nel Caine, graduate student Rose Cory and former graduate student Fengjing Liu....
Research team discovers first evidence of microbes living in a rock glacier
...red evidence of microbial life in rock glaciers in southern
Colorado and in Wyoming, said Knauf. Other CU-Boulder researchers involved in the study include Nel Caine, Rose Cory and Fengjing Liu....
The secret life of acid dust
...wn in from the northern shores of Egypt, Sinai and southern
Israel. The particles had mingled with air containing pollutants that originated from Cairo. They analyzed nearly 2,000 individual micron-sized particles and observed the physical and chemical changes with an array of techniques at the W.R. Wiley Env...
Hummingbirds lose power at high altitudes
...e Americas, but occupy many niches from the tip of southern
Chile to Alaska. "To correlate wing characteristics with power margin at different elevations, you have to account for the phylogeny the family tree that shows you how species are related to one another," said coauthor Jimmy A. McGuire, ass...
ESA's Huygens begins its final journey into the unknown
...a velocity of about 6 km/s. The target is over the southern
hemisphere, on the day side. Protected by an ablative thermal shield, the probe will decelerate to 400 m/s within 3 minutes before it deploys a 2.6 m pilot chute at about 160 km. After 2.5 seconds this chute will pull away the probe's aft cover and t...
Ants' 'genetic engineering' leads to species interdependency
...dopt. However, in two harvester ant populations in southern
New Mexico, queens and workers from the same colonies are genetically very different; in both species at the site, only the queens are genetically derived from a pure species-specific lineage, whereas all the workers are hybrids that possess a combin...
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