Tag: "algae" at biology news

Scientists propose new approach to estimating global ocean productivity

...mass tells us what the physiological status of the algae is. Factor in light, temperature and its correlation to nutrients, and now we can estimate how fast they are growing." Scientists can use data from orbiting satellites to calculate each of these factors. In their paper, the authors use the new metho...

Scientists discover unique microbe in California's largest lake

...ity of Oregon have discovered a form of blue-green algae that lives independently in California's Salton Se...rganism while studying the diversity of blue-green algae in the hypersaline lake as part of the comprehensive study of the Salton Sea coordinated by Professo...

Ocean colour satellites guide research ship through South Pacific's watery desert

...ankton species, tiny unicellular photosynthesising algae resembling 'grass of the sea'. Ocean colour observations show considerable variations across the South Pacific: one vast blue spot is roughly centred on Easter Island, covering an area equivalent to the Mediterranean Sea. Standing like an oasis ...

Violent ocean motion no magic potion for reefs

...ming concentrations of a cyanobacterium similar to algae killing corals and other reef organisms. "This is ...study area. The researchers also collect water and algae samples whose chemical signatures are studied to determine if they more closely match the signatures...

Global warming good news for coral reefs: research

...al reefs are built from calcium carbonate when red algae cement together a framework of coral skeletons and sediments. Seawater surface temperatures and the quantity of carbonate in seawater dictate their growth rate. The Australian scientists have observed the calcification-temperature relationship at...

Researchers discover direct link between agricultural runoff and massive algal blooms in the sea

...-scale coastal farming to massive blooms of marine algae that are potentially harmful to ocean life and fis...en benefit marine ecosystems by generating tons of algae that are consumed by larger organisms. But several phytoplankton species produce harmful blooms, kno...

Award will help unlock mysteries of one of Earth's most important organisms

...ine phytoplankton. Phytoplankton are single-celled algae and the most abundant photosynthetic organisms in ...onmental conditions that trigger blooms of harmful algae in marine waters and how these blooms affect public health when contaminated seafood is eaten. "It ...

Food shortages threaten Antarctic wildlife

... the full scale of this decline. Krill feed on the algae found under the surface of the sea-ice, which acts as a kind of 'nursery'. The Antarctic Peninsula, a key breeding ground for the krill, has warmed by 2.5C in the last 50 years, with a striking decrease in sea-ice. We don't fully understand how the...

Who laid the first egg?

...ll, A.H., 1998, "Three-dimensional preservation of algae and animal embryos in a Neoproterozoic phosphorite," Nature, v. 391). Within the egg cases they examined at that time, they discovered animals in the first stages of development from a single cell to only a few dozen cells. "The cellular preservatio...

Diatom genome reveals key role in biosphere's carbon cycle

...al of a diatom, from a family of microscopic ocean algae that are among the Earth's most prolific carbon dioxide assimilators, has yielded important insights on how the creature uses nitrogen, fats, and silica to thrive. The diatom DNA sequencing project, funded by the U.S. Department of Energy (DOE) and...

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