Tag: "drainage" at biology news

University Of Toronto team discovers salt tolerance gene in plants

...h-quality irrigation water and the installation of drainage systems-- areexpensive and inaccessible in many areas. Attempts at conventional breeding toproduce crops that adapt to the saline conditions have also been unsuccessful,with only a few varieties produced with low salt tolerance. Worldwide patent app...

Media Advisory: The Geological Society of America 1999 Annual Meeting

...e groundwater, frequently referred to as acid mine drainage (AMD), isa nationwide environmental problem. Remediation attempts have focused onpredictive studies (to avoid the problem relative to new mines), active chemicaltreatment in active and recently abandoned mines, and passive treatment methodsfor older ...

Stream size major factor in nitrogen reaching the Gulf of Mexico

...leased in different areas of the Mississippi River drainage basin has an equal chance of reaching the Gulf. It...livery from point and nonpoint sources in a stream drainage basin is not simply a function of the distance between the Gulf and the nitrogen source, but a funct...

Origins of first Americans

...ding the Athabascan-speaking people from the Yukon drainage of Alaska and northwest Canada, spread as far south as Arizona and northern Mexico. "Their craniofacial configuration allies them more closely to the living Chinese than to any other population in either hemisphere," Brace notes. To refine the linka...

Acid-loving microbe may be a key to mine pollution

...ism's metabolism greatly accelerates the acid mine drainage process" by converting the solid sulfide mineral to sulfuric acid, a corrosive liquid that leaches from mining sites into the surrounding environment. The process has caused billions of dollars in damage to the environment worldwide. "This is a proce...

Best bet for saving cave species

...e vulnerable to disruptions of the vegetation and drainage basins of the overlying surface. For example, deforestation around caves can decrease bat and rat populations, thus reducing the dung that many cave species depend on. Dung-dwellers account for an estimated 40% of the U.S. species that live only ...

Common household items could be sources of infections

...bers are often found in human fluids such as nasal drainage and stools. Hence, if a virus such as the rotavirus (a diarrheal virus) were on the surface of a telephone receiver, infectious doses could easily be transferred to persons using the telephone. For example, if a telephone receiver were contaminated...

Rockets or rainforest

... proves acceptable to both sides. But he adds that drainage work would probably begin in six months, before completion of the assessment. Many Amerindians have backed the scheme, says Spoede. "They want job opportunities for themselves and their children," he told New Scientist....

Cows and conservation: a round-up of speakers to discuss new ideas on ranching

...nd domestic sheep are also managed along sensitive drainage areas, allowing the vegetation to "rest" occasionally. An increase in groundcover, improved quality of riparian systems, and substantial increases in cattle stock have all been achieved through these and other management practices. In an attemp...

Geological Society of America: Annual Meeting 2000

...Lawrence Berkeley National Laboratory, Seepage and drainage of condensate water in the potential geological repository of nuclear waste at Yucca Mountain, Nevada. Zell E. Peterman, U. S. Geological Survey, Saturate zone flowpaths based on hydrochemical and isotopic data from ground water in the Yucca Mounta...

Biocomplexity study in Lake Ontario bays and lagoons

...s of the lake and the uplands and streams of their drainage basins. They are considered to be typical of the numerous freshwater bays throughout the Great Lakes that are associated with extensive wetlands and human settlements. The Lake Ontario biocomplexity research plans calls for: o Three Cornell investi...

Worldwide transfer of microorganism facilitated by ballast water

... Lakes, and the Hudson, Ohio and Mississippi river drainage basins. Numerous examples of harmful invasive species abound throughout the world the Baltic Seas green crab is now ranging the northeast and west coasts of the U.S., aquatic plants such as phragmites, water milfoil and hydrilla are taking over man...

Unified theory relates microbial metabolism to lab and field

...ts on the chemistry of groundwater, from acid-mine drainage in the West to arsenic poisoning in wells in Bangladesh," said Craig Bethke, a UI professor of geology. "The bulk of the worlds microbial biomass operates by eating rocks taking inorganic chemicals and using them to produce energy. By constructing...

Discovery may jump-start mine remediation efforts

...anfield, is "what has been envisaged for acid-mine drainage treatment using constructed wetlands which are rich in organic matter. Maybe our work can be used to refine development of these strategies." The worldwide problem of contamination around mining sites is significant. Acid mine drainage, for example, ...

One answer for cleaner air, water: better agricultural practices

...use change, such as plowing, drainage and residue removal in the U.S., said Rattan Lal, a professor of natural resources at Ohio State. Each year, accelerated soil erosion releases about 15 million metric tons of carbon in...

Sea grant study indicates potentially harmful human viruses in coastal waters

...some groups are beginning to test their creeks and drainage culverts for signs of human contamination. The risk of contamination from human waste appears to be significant, according to a survey of 12 river mouths in Los Angeles, Orange and San Diego counties conducted by assistant professor Sunny Jiang at UC...

Weizmann Institute scientists block loss of eyesight in animals with a glaucoma-like disease

...increased pressure inside the eye due to defective drainage of the transparent fluid that bathes the eye and n... glaucoma therapies focused on correcting the eyes drainage system to reduce IOP. Eventually, however, it became clear that reducing the pressure was not enough...

Increased use of chemicals in agriculture worldwide seen as major environmental threat

...ds and buffer strips between cultivated fields and drainage areas and appropriate deployment of more productive crops can increase yields, while reducing water, fertilizer, and pesticide use and movement to nonagricultural habitats," they explain. They call upon international agencies to aid third wor...

Glucose deficit affects young and old, could impact school schedules

... the University of Virginia, reported that glucose drainage during a task is site specific. Hippocampal extra...flection of changes in circulating blood levels or drainage in other areas." In Mays Journal of Gerontology, McNay, a postdoctoral researcher in psychology, and...

Lake tributaries in Yellowstone National Park allow unique study of whirling disease

...e University of Montana, focuses on the Rock Creek drainage near Missoula. Scientists at MSU are studying the aquatic worm in which the parasite lives before infecting fish. California, Colorado, Idaho, Oregon, Utah, Wyoming and New Mexico also have projects funded this year by the partnership. Twenty-...

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