Tag: "freshwater" at biology news
A treatment, not a cure: Calcium silicate neutralizes an acidic stream
As a result of fossil fuel emissions, many freshwater
bodies in eastern North America have become acidif...scape scale and they will not protect our nation's freshwater
resources." The Wollastonite stream application was part of a larger watershed-level addition. To l...
Amphibians in dramatic decline; Up to 122 extinct since 1980
...o changes in the environment, including changes to freshwater
and air quality. "Amphibians are one of nature'...ams, better community engagement and protection of freshwater
systems would enhance amphibians' chances of survival. "Since most amphibians depend on freshwat...
Zebrafish may offer researchers powerful new tool for studying innate immunity
...ertain viruses. The zebrafish, a small species of freshwater
aquarium fish, increasingly serves as an animal model for the study of genetic diseases. Like humans, it has two types of immune systems innate and adaptive. Innate immune systems provide a first line of defense against foreign microorganisms. But, ...
Mollusk research center will propagate endangered species
...ecies in the United States. Richard Neves, head of freshwater
mussel research at the facility and professor of f... opportunity to gain real research experience with freshwater
mussels. "Students who graduate with either a master's degree or Ph.D. find jobs right away because...
2004 IUCN Red List of Threatened Species reveals 15,589 species at risk of extinction
...eclined steadily since the 1980s. The situation in freshwater
habitats is less well known than for terrestrial h...ich habitats, such as tropical forests, marine and freshwater
systems, or particular groups, such as invertebrates, plants and fungi, which make up the majority o...
Science to restore the nation's ecosystems
...near-shore and riverine marine mammal dependent on freshwater
for drinking and seagrass and freshwater
vegetation for forage. Hydrological restoration of the Everglades should result in changes to freshw...
Stanford biologist working to restore native forests to Hawaii
...g koa forests." For example, koa can help recharge freshwater
aquifers, many of which are being overdrawn in Hawaii, Daily said. Whereas mist and clouds pass over grassy ranchland without contributing much to groundwater, koa trees provide a lush, broad-leafed canopy that can draw moisture out of the air more e...
Study in Royal Society journal on first evidence for magnetic field detection in sharks
...trophic specialization drive adaptive radiation of freshwater
gastropods in ancient lakes on Sulawesi, Indonesia...d Sulawesi harbour a species flock of live-bearing freshwater
snails. A molecular genetic analysis of the 33 species in the lakes has revealed four independent co...
Queen's biologist awarded Canada's top science prize
...o the impact of increased ultraviolet radiation on freshwater
life, and climate change. "I am of course tremendously honoured to receive the Gerhard Herzberg Canada Gold Medal," says Dr. Smol, who is Canada Research Chair in Environmental Change. "But I also realize that my scientific contributions have been d...
B-15A iceberg's close encounter monitored by Envisat
...e backscatter contrast between the relatively pure freshwater
ice tongue which originated on land as snow and the surrounding sea ice, due to their very different physical and chemical properties." The Drygalski ice tongue is located at the opposite end of McMurdo Sound from the US and New Zealand bases. Lar...
Sinking coastlines may precede large subduction zone quakes
...era and thecamoebians in the mud, as the formerly freshwater
marshes sink and become brackish or saltwater marshes. One marsh in Alaska apparently sank about half a foot starting perhaps 15 years before the devastating 1964 Alaska quake, which measured 9.2 on the Richter scale and generated a tsunami that kill...
Family trees of ancient bacteria reveal evolutionary moves
...ded that these species got their start on Earth in freshwater
systems on continents and gradually evolved to exist in brackish water environments, then higher salt ones, marine and hyper saline (salt crust) environments. Cyanobacteria are organisms that gave rise to chloroplasts, the oxygen factory in plant ce...
Genetic switches help fish adjust to fresh and salty water
...nal salt level, their gills must pump up salt from freshwater
but excrete it in the ocean. "Fish that can surviv...nted with tilapia, moving the fish directly from a freshwater
tank to one holding seawater. They observed a rapid increase in the levels of two transcription fact...
Scientists urge outcome-based, watershedwide approach to restore the Chesapeake
...r unless we stem the loss of headwater streams and freshwater
wetlands and restore non-tidal waters," Palmer say...nally lead to disjointed, uncoordinated efforts in freshwater
and coastal systems," says Jonathan Kramer, session organizer and director of the Maryland Sea Grant...
Antarctic ice shelf retreats happened before
...scientists analysed sediments from the bottom of a freshwater
lake close to the edge of the present George VI Ice Shelf. The results revealed that about 9500 years ago the ice shelf retreated, allowing the sea to flood into the lake. The ice shelf didn't reform until 1500 years later, and has been present ever ...
One year after groundbreaking, desert research center takes shape on the Israeli-Jordanian border
...ng at a rate of 3 feet (1 meter) a year because of freshwater
diversion from the Jordan River for Jordanian farms and groundwater pumping for Israeli factories that produce large amounts of methyl bromide, a pesticide. Mooney was particularly interested in collecting samples of tamarisk, a Mediterranean plant t...
Man-made wetland's effectiveness similar to natural marsh
...nitrogen. While phosphorus is more of a concern in freshwater
areas, as freshwater
algae thrive on this nutrient, nitrogen is a considerable problem in the Gulf of Mexico. Each spring...
Faculty of 1000 Biology launch ecology faculty
...lutionary ecology; Global change ecology; Marine & freshwater
ecology;Physiological ecology; Population ecology; Spatial & landscape ecology;Theoretical ecology. The Faculty of 1000 Biology ecology faculty not only evaluates articles inecology journals, but also provides evaluations on relevant articlespublishe...
South America's vast pantanal wetland may become next everglades, UNU experts warn
...South America, the Pantanal is the world's largest freshwater
wetland, of active interest to U.S. scientists for insights into the lost biodiversity of Florida's famed Everglades, altered by drainage projects starting in the 1940s to make way for development and agriculture. In a message to mark World Water Day...
Researchers trace evolution to relatively simple genetic changes
... of marine sticklebacks. Marine fish colonized new freshwater
lakes and streams when the last ice age ended 10,0...ny plates that offer protection. In contrast, some freshwater
sticklebacks have evolved to have almost no body armor. "It's rather like a military decision, to b...
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