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Tag: "water" at biology news

By 2048 all current fish, seafood species projected to collapse

...ices that have declined involve the maintenance of water quality by biological filtering, the provision of nursery habitats and the protection of shorelines by marine species. The loss of marine diversity also appeared to increase the risks of beach closures, harmful algal blooms (red tide, for example), o...

Genetically engineered blood protein can be used to split water into oxygen and hydrogen

... molecular complex that uses solar energy to split water into hydrogen and oxygen, says research published ...o electrolysis, the method typically used to split water into its constituent parts. The breakthrough may pave the way for the development of novel ways of c...

Seagrass ecosystems at a 'global crisis'

...deteriorating ecological conditions caused by poor water quality and pollution." Among its findings, th...y provide critical habitat for aquatic life, alter water flow and can help mitigate the impact of nutrient and sediment pollution. ...

Hundreds of thousands of viral species present in the world's oceans

...study of the diversity of bacteriophage present in water samples collected from 68 sites over 10 years from four oceanic regions (the Sargasso Sea, the Gulf of Mexico, British Columbia coastal waters, and the Arctic Ocean). They use pyrosequencing (a technique that enables collection of many DNA sequence r...

NASA satellite data helps assess the health of Florida's coral reef

...mptom of coral stress, which can be caused by high water temperatures, other environmental stresses, or disease. The project was part of the Florida Reef Resiliency Program, funded by the state of Florida and The Nature Conservancy. It involved volunteers and researchers from several agencies, organization...

Ocean sampling yields environmental sources of coral symbionts

...n corals—have been isolated from both sand and the water column; however, neither the locations of these po...chers succeeded in identifying Symbiodinium in the water column as well as on ocean-bottom substrates. Most importantly, the researchers also demonstrated th...

Edible coatings will be the packaging of the future

...ting results in an increase in its permeability to water vapour, and its applications are thus very limited. In order to set this deficiency off, mesquite gum was incorporated into the milk serum protein. This is a polysaccharide that grows in dry and semi-arid regions of the north of Mexico. The result is...

A buffet for early human relatives

...which they use photosynthesis to convert sunlight, water and carbon dioxide into plant matter and oxygen. Carbon isotope ratios reveal the extent to which the relatives of early humans ate so-called C3 plants, which include fruit and leaves from trees in both the forest and savanna, and C4 plants, which gr...

Rearing an army to save wheat

...ovided as nectar from flowering plants or as honey water increases the number of parasitic wasps produced in each cage. Another part of his thesis project examined whether using special ultraviolet and visible light-transmitting windows increases the number of parasites. "After two years, the research s...

Reef warns of sea level rise

... off Margaret River would then have been more like water temperatures off Geraldton today, allowing the corals to flourish and reefs to form. The discovery is of particular importance as it shows that sea levels rose not only because of the expansion of the oceans due to warming, which can account for ~1/2...

Researchers develop technologies to devour food pathogens

... policies, as well as practicing better manure and water management, can go a long way to help prevent future outbreaks, Linton said. E. coli is especially problematic because it only takes as few as 10 cells to infect humans. Other pathogens, like salmonella, need thousands or millions of cells to cause...

Archerfish tune their shots to universal properties of prey adhesion

...trial animals by firing precisely aimed streams of water that knock prey onto the water's surface. These water shots were once thought to be all-or-none in quality, but researchers have now discovered new levels...

Virus may control Australia's

...r the waterways. They can tolerate a wide range of water temperatures, salinity and pH levels. Carp can also survive and breed in polluted, poorly oxygenated water. "The fish grow to up to 20 kilograms or more in weight and each female can lay up to three million eggs in a single season," Dr Crane says. "...

Ocean seep mollusks may share evolutionary history with other deep-sea creatures

... managed to ride out these changes. "The shallow water environment is much more challenging, subject to c...rothermal vents, fissures in the ocean floor where water is superheated by magma lurking just below the crust. Although seep and vent fluids are a poisonous...

From hot springs to rice farms, scientists reveal new insights into the secret lives of archaea

...t ammonia-oxidizing Crenarchaeota are pervasive in water columns and sediments throughout the ocean. Then in July 2006, German microbiologist Christa Schleper showed that nitrifying eota were up to 3,000-times more abundant in European soils than their bacterial counterparts. Mexico to Iceland At t...

Siberian lakes burp 'time-bomb' greenhouse gas

...lacing bubble traps over these spots and under the water the researchers could get daily measurements of the volume of methane released by the bubbles. Walter will continue her work on methane for her UAF International Polar Year post-doctoral project which will provide the first circumpolar estimate of m...

Small, smaller, smallest -- The plight of the vaquita

... the vaquita’s precarious condition on the lack of water in the Colorado River ?a result of damming and diversion in the United States. No data have been offered in support of this idea and, in fact, the Upper Gulf remains a very rich and productive ecosystem. Is the vaquita destined to become the first...

Seals protect brain, conserve oxygen by turning off shivering response on icy dives

...eals took a series of experimental dives into cold water of 2-3° C. The researchers recorded shivering, heart rate, brain temperature and rectal temperature while the seals were on the surface and while they were diving. The seals shivered on the surface but stopped or nearly stopped shivering when they...

Giant insects might reign if only there was more oxygen in the air

... recalled a caterpillar that fell into a bucket of water in his lab. When the creature was discovered the next day, lab workers thought it had drowned. But when they removed its apparently lifeless little body from the water, they were surprised to see it crawl away. Tracheae grow disproportionately ...

Rising ocean temperatures, pollution have oysters in hot water

Oysters exposed to high water temperatures and a common heavy metal are unable t...vy metal, reduces the oyster's tolerance of warmer water temperatures and makes it more vulnerable during the summer when water temperatures rise. Half of th...

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