Tag: "water" at biology news
Researchers review evolutionary history of modern algae
...the help of sunlight could make carbon dioxide and water
into oxygen and energy providing chemicals. The ... The researchers found that changes in sea level, water
chemistry and the amount of carbon-dioxide in the water, and even the evolution of grass-eating anim...
NSF awards $10 million in grants to ocean sites for long-term ecological research
...ckwise circulation of the north Pacific Ocean. As water
from the westward drift turns south and becomes th... California Current, it brings with it cool, fresh water
from the sub-arctic region. The California Current System off central and southern California consi...
Ocean scientists assess impact of seismic pulses in effort to protect whales
...nd that previous models had overestimated the deep water
impact of low frequency sound waves, while underes...o determine the radius of the emitted sound in the water
at various frequencies and decibel levels. Tolstoy notes that since passage of the Marine Mammal Pro...
Geologists discover water cuts through rock at surprising speed
...l climate changes tied to the last ice age than by water
pouring from melting glacial ice. "The period of incision we measured correlates with a period of cold and stormy climate during the last glacial period that is also recorded in ice cores drilled into the Greenland ice sheet," said Luke Reuss...
Plant respiration not just an evolutionary leftover, study shows
...ories that harness energy from sunlight to convert water
and carbon dioxide into sugars that fuel the plant...ting sugars in the plant back into carbon dioxide, water
and energy. Believing that photorespiration is a consequence of the higher levels of atmospheric car...
Wildland fires: After the smoke clears
...dslides; erosion and sedimentation that can impact water
quality; and invasive weeds that can fuel future fires. Come hear how the U.S. Geological Survey (USGS) and its partners work together to protect lives, property, and ecosystems as they stabilize burned areas and rehabilitate the land. Speakers: ...
Tips from the Journals of the American Society for Microbiology
...e opportunistic pathogens commonly associated with water
reservoirs. "These results show that shower curtains are a potential source of opportunistic pathogens associated with biofilms," say the researchers. "Frequent cleaning or disposal of shower curtains is indicated, particularly in households wit...
When male fish hum, females swim in, thanks to hormones, adaptable hearing
...ity of females." The midshipman fish live in deep water
off the Pacific Coast of the United States three-quarters of the year. They move into shallow intertidal zones to reproduce. Males build nests under rocks and begin broadcasting their loud humming love calls to attract females. The researchers colle...
Hormone helps fish to mate, may affect human hearing
...ions. Upper harmonics propagate farther in shallow water
environments like those where midshipman males bui...g time, when males move toward the shore from deep water
and prepare to advertise their love nests, the humming chorus becomes so loud and persistent that ho...
'Anti-plume' found off Pacific Coast
...he water. "In this case, though, it actually drew water
down into the subsurface, which is something scien... large, or frequent, they could affect surrounding water
temperatures and chemical composition, Dziak said. Finally, water
migrating downward through the Ea...
New study in moths shows insects not entirely ruled by instinct
...raining the animal that one odor meant food sugar water
was on the way and another odor did not. "We saw a dramatic restructuring of the neural networks that convert scent into a code that the rest of the brain can understand," Daly said. "The changes in this coding suggest that the moths learned to diff...
When sun's too strong, plankton make clouds
... cell walls. This chemical gets broken down in the water
by bacteria, and it changes into another substance...icles. These particles are just the right size for water
to condense on, which is the beginning of how clouds are formed. So, indirectly, plankton help creat...
New lower-cost assay system equivalent to flow cytometry for accurate CD4+/CD8+ cell counts
...ratory infrastructure or large amounts of buffered water
as sheath fluid that are required by conventional flow cytometers. The elimination of the use of sheath fluid also results in less bio-hazardous waste and further reduces the running costs of using the system. Daily maintenance is minimal just a fas...
Water study yields a few surprises for New England
...eas, has affected the quality of rivers and ground water
in cities and rural areas. The impact is reflected...s used in industrial cleaners, were below drinking water
standards and guidelines, but were still frequently found in ground waters used for drinking. M...
Researchers discover how worms' noses sense oxygen
...aid. "But most other animals on the planet live in water
or the soil, such as C. elegans. And since oxygen diffuses much more slowly in those environments, they must evolve ways to sense oxygen and react to changes in oxygen levels." Marletta's students continue to take apart the guanylate cyclase enzyme ...
New space-borne instrument to track greenhouse gases, ozone destroyers, and other pollutants
...or the first time the dynamic processes that cause water
vapor filaments and tendrils to break off and mix with other gases in the troposphere. Good and bad ozone at different altitudes At 50 kilometers (30 miles) above the ground, ozone is good: it blocks dangerous ultraviolet radiation and prevents it ...
UCSD team determines cellular stress within body is critical
...ent than that inside the cell. When this happens, water
flows either into or out of the cell by osmosis, t...acellular environment. Hyperosmotic stress causes water
to diffuse out of the cell, resulting in cell shrinkage, which can lead to DNA and protein damage, c...
Make a splash for public health this summer
...hy times. A national partnership of public health, water
quality and consumer advocacy organizations would ...lthy and active this summer: Don't swallow pool water
Practice good hygiene Stay out of the pool if you have diarrhea. According to Dr. Beach, we...
Microscopy scans show how brain cells process energy
...er the activated brain burns glucose completely to water
or incompletely to lactate," said Karl A. Kasischke, M.D., lead author of the Science paper titled "Neural Activity Triggers Neuronal Oxidative Metabolism Followed by Astrocytic Glycolysis." "Our results unify existing contradictory opinions and sh...
Releasing pet fish into the wrong ocean proves a diaster
...he US coast. The researchers ruled out the ballast water
picked up and discarded by ships to maintain stability as a cause for the introduction of exotic fish. "Their home ranges do not overlap with shipping routes," Semmens says. Most of the exotic fish have yet to establish a viable population, but scie...
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