Tag: "water" at biology news
Volcanic soils yield new clues about the emergence of powerful chiefdoms in Hawaii
...nt grown in irrigated wetlands where the supply of water
was usually abundant. But on Maui and the Big Island of Hawaii, the main staple was the sweet potato a more labor-intensive crop planted in relatively dry fields where success depended on adequate seasonal rainfall. Some anthropologists say that, ...
JGI, VBI help unravel sudden oak death & soybean disease
...gus-like group of organisms known as oomycetes, or water
molds, they are relatives of such aquatic algae as diatoms and kelp. The pathogens survive as thick-walled spores that can persist in soil for years. Of the 59 recognized Phytophthora species, it was P. infestans that was responsible for the mid-19th...
Hidden cost of Colorado River diversions is $2.4 billion annually
...$2.4 billion per year because the Colorado River's water
no longer flows all the way to the Gulf of Califor...rvices, to humans. However, so much Colorado River water
has been dammed or diverted for human uses that the river's delta no longer works the way it used to...
All ecosystems are equally productive under drought conditions
...ons, tropical forests can be as efficient at using water
as desert ecosystems, researchers report. ...ical questions on the face of the planet: how does water
affect how an ecosystem works?" Although it seems a simple question, it turns out to be a to...
Need sex? It's probably something about stress
...ies can be found in temporary ponds that fill with water
in the spring and slowly dry out as summer progres...ns, Nedelcu put culture plates full of Volvox into water
baths for two hours. At several points in time, she added a dye that fluoresces when exposed to oxid...
Four tourist destinations named best worldwide
... strict set of environmental guidelines, including water
recycling and composting. Visitors enjoy reef diving, local poetry readings, and the majestic backdrop of a nine-acre garden. The Club invests heavily in their employees through education and business training. The winner of the Destination Stewa...
Keeping your peas and carrots safe to eat
...at growers everywhere have good quality irrigation water
and sanitary conditions for their workers," Scheue...or compost tea regulations (a brew of compost with water
used as a biocontrol agent or fertilizer). "Using techniques developed by plant pathologists, scient...
Tracking climate change
...hanges of past ages. The cores give information on water
temperature, salt content and ocean currents and, in addition, will show how and when the Arctic sea ice was formed. This information will be highly significant to our understanding of global climate changes. The drillings will be carried out very cl...
Lowly weeds may hold promise for curing host of common health woes
... plants in this way." Because of parasites in the water
supply, an upset stomach is a common health problem for the Mayans, who often treat it by boiling the weed baccharis vaccionoides, which they call "broom tree," Stepp said. Various weeds to treat cold and respiratory problems also are self-prescribed...
Earstones tell fishes' tale of early life in the Colorado River estuary
...cially important gulf corvina require the brackish water
habitat provided by the shrinking Colorado River e... suggests. Since 1960, diversion of Colorado River water
for human uses has greatly reduced the amount of fresh water
that reaches the Gulf of California, th...
First ever standards linking climate change, biodiversity and poverty seek global peer review
...ological connectivity, and conserving or enhancing water
resources. Overwhelming scientific evidence implicates greenhouse gases generated by human activity in changing the global climate. Simultaneously, record numbers of people subsist in poverty and massive biodiversity losses continue largely unabated...
Nanosphere announces genetic detection advance in Nature Biotechnology
...ovide its Verigene TM platform for the testing of water
samples for signature nucleic acid sequences of known biological warfare agents (e.g., anthrax and plague). The second contract, initiated in February 2004, involves the adaptation of Nanosphere's technology into a field-deployable system that enable...
Concerns remain about UVB damage to amphibians
...and they need to hatch and grow quickly before the water
evaporates or freezes. "Those types of behavior d... "It's not that simple. Moreover, as ponds dry and water
levels decrease, amphibians cannot just get out of the sunlight, and they are bombarded by intense U...
Ecological science for a crowded planet
...efforts must especially focus on sustainability of water
resources and problems associated with the growth of urbanized areas. Moreover, the group urged increased collaboration among ecologists, social scientists, policy-makers, and practitioners. Complementing the ESA's action plan is an article, "Ecolog...
Floods, bugs and Hollywood disasters
...anges in storm frequency and intensity; changes in water
availability; changes of pests and related disease...rsity. "With two kinds of breeding environments of water
in abundance, this is going to be a bad news year for mosquitoes, and a big year for black flies," M...
Gene linked to alcoholism
...xcessive amounts of alcohol, preferring ethanol to water
and evincing highly anxious behavior in a maze test. Results of the study are published in the May 26 issue of the Journal of Neuroscience. The gene the researchers investigated manufactures a protein called CREB, or cyclic AMP responsive element bin...
Indoor mold, building dampness linked to respiratory problems and require better prevention
...ly fixing leaks and cleaning up spills or standing water
substantially reduces the potential for mold growth, there is little evidence that shows which forms of moisture control or prevention work best at reducing health problems associated with dampness, the report notes. In addition, materials designed ...
Can we restore wetlands and leave the mosquitoes out?
...In the 1800s, when Tucson's now-dry river beds had water
more regularly, malaria was present in the Tucson basin. Although malaria is not present in the Tucson area now, Arizona's West Nile virus season has already begun. "Several obstacles block people from frankly discussing mosquito problems," writes Wi...
Study helps satellites measure Great Lakes' water quality
...s are helping satellites form a clearer picture of water
quality in the Great Lakes. The study -- the first...ater lakes every summer, satellite images show the water
changing color from blue to green, explained Carolyn Merry, professor of civil and environmental eng...
Physics tip sheet #42
...Dating Analysis of levels of krypton has revealed water
samples from the Nubian Aquifer in Egypt to be between 200,000 and 1,000,000 years old. Researchers will present results of the first use of the Atom Trap Trace Analysis (ATTA) system, which uses laser manipulation to count atoms. The team compared l...
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