Tag: "river" at biology news
New evidence indicates huge vegetation loss accompanied mass extinction
...ssive loss of vegetation, causing major changes in river
systems. Probing sedimentary layers in the Karoo..., with the loss of deep-rooting plants, meandering river
systems changed rapidly to braided systems. Braided streams run much straighter and faster and branc...
150-year global ice record reveals major warming trend
...ious observances, scientists have amassed lake and river
ice records spanning the Northern Hemisphere that ...ed in the study as the observed period the lake or river
was completely ice-covered; the breakup date was defined as the last ice breakup observed before the...
Catch 'em if you can
...n River near Murchison and naive trout in a remote river
of the Kahurangi National Park, which is usually i.... They asked two experienced anglers to visit each river
on four fishing trips over a single season. On each three-day trip, observers recorded the number of...
Cincinnati researchers document environmental problems caused by tourist trade in Crete
... mesh fence on the south side of a bridge over the river
to catch solid waste as it flows down into the wetland. The fence would need to be cleaned regularly. 5.)Removing the non-wetlands plants that have begun to invade. 6.)Better policing of the wetland to inhibit illegal dumping and other activities har...
Ancient mediterranean port city may have been holy land way station
...ds, choppy seas and a lack of freshwater spring or river
in the city, residents apparently gathered enough rainwater in cisterns to sustain them, Hohlfelder said. Aperlae likely was founded in the fourth century B.C. to produce the valuable dye and export it to nearby port cities via boats. Because of a ...
A diverse ecosystem offers little or no protection against invading species, says a new UC Berkeley study
... with the observed patterns of diversity along the river
suggested that something other than diversity was involved in driving the ecosystem-wide patterns. Levine noticed that downstream tussocks were both more diverse and more likely to be invaded than upstream tussocks. Perhaps, he thought, this is b...
Upper Columbia River: Some fish contaminants decreasing, USGS study shows
...ably as a result of reduced waste dischargesto the river
and a flushing effect from greater streamflow due to a change in river
flow management. Dioxins and furans decreased in rainbow trout, althoughnot in whitefish. PCB (pol...
Tucson researcher receives national award
... question led her to the kissing bug of the Amazon river
basin. In 1991 Walker was a member of the research team that discovered a new class of heme proteins in the saliva of the blood-sucking insect. In a display of clever evolution, the kissing bug injects a heme protein called nitrophorin as it bites. O...
Food web theory suggests ecology may be governed by general rules
...perties for such a diverse range of systems-lakes, river
estuaries, a Carribean Island and a desert-suggests there are deep similarities to these very different ecosystems," said Williams. "On a practical level, the model can be tied into other areas of research, such as studying population dynamics and sp...
Delivering the fruits of biotechnology to the developing world: Institute for Global Health sponsors global health forum, February 18-21
...on drugs and vaccinesfor diseases like malaria and river
blindness, or put more emphasis onstrengthening the markets for these products in developing countries. "There's a lot of uncertainty among pharmaceutical companies about what thepotential market is outside the wealthy countries," Feachem said. One ...
Human stem cell research leads Science's top ten list of the best scientific advances in 1999
...their choices are: enzymes in Alzheimer's disease, river
restoration projects, x-ray astronomy, epigenetics, nanocomputers, and polio eradication. The editors also check in on last year's scorecard to see how well they did with 1998's predictions. Science's Top Ten section also includes some additional a...
New Cosumnes River research partnership announced
...inning that is likely to become a model for future river
management and restoration across the nation. The ...nd director of the UC Davis Watershed Center. "The river
has an active floodplain and no dams, making it ideal for studying the relationship between the hydr...
Lemur 'Juliet' may be new subspecies; no mate for 'Romeo'
...pecies is found north of the Munubu River, a major river
in Madagascar, while the darker propithecus diadema edwardsi subspecies is found quite far south of the river. The new animals were captured just south of the Munubu. "If genetic testing reveals that the two animals do indeed represent a subspecies ...
USGS designs fishway for Little Falls Dam
...iews on anadromous fish, riverengineering, Potomac river
flow and drought; photo opportunities will existduring demonstrations of the working fishway model. Directions at end of pressadvisory. Interior Secretary Bruce Babbitt joins federal, state and local governmentagencies and private organizations a...
UNC-CH marine scientist says hurricane could be catastrophic for Pamlico Sound
...sive agricultural and urban development in coastal river
USGS scientists tracking environmental damage from Floyd
...es including a smallagricultural basin and a large river
site. These are part of the statewidepesticide- monitoring program. In the Hudson River Basin, USGS researchers arelooking for sediments, organic compounds and other contaminants which willeventually flow into the New York-New Jersey Harbor. In the ...
As Hurricane Floyd moves up the Atlantic Coast . . . .
...on of floodinformation to National Weather Service river
forecast centers, the U.S. ArmyCorps of Engineers, and the Federal Emergency Management Agency. Although many USGS offices along Floyd's path were closed on Thursday as asafeguard for their employees, essential staff were in the field monitoring the...
USGS responds to Hurricane Floyd in Virginia
...etwork of streamflow gaging stations in nine major river
basinsacross Virginia, providing data on river
stages and discharges to the NationalWeather Service and the public in real time. Real-time streamfl...
Hurricane Floyd brings record flooding to southeast Virginia
...water River in Southampton County isextensive, and river
stage is still rising at the streamgage operated b...rvey (USGS) near the town of Franklin. The current river
levelexceeds the peak of record at the gage, which has been in operation for 55years. Local resident...
Mercury can jump barrier that keeps toxins out of brain
...searchers found that mercury dissolved in lake and river
water can enterthe nerves that connect water-exposed sensory receptors (for odor, taste,vibration and touch) to the fishes' brains. It can go directly to the brain,they say, circumventing the blood-brain barrier, a nearly impermeable membranethat pre...
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