Tag: "algae" at biology news
A new hypothesis on the origin of 'junk' DNA
...of organisms that includes animals, plants, fungi, algae
and other protists. Bacteria tend to have extremely lean genomes; their genes barely fit into them, without much genetic material left over. Eukaryotic genomes are a complex mixture of useful genes and useless ("junk") DNA jammed haphazardly between ...
Over land, sea and air, users give MERIS high marks
...o chart one very specific phenomenon: fish-killing algae
blooms that threaten Chile's successful aquacultur.... "MERIS works better for the purpose of detecting algae
blooms than comparable ocean colour instruments such as MODIS." Formed from individually microscopi...
Mantis shrimp fluoresce to enhance signaling in the dim ocean depths
... all. In fact, if you go out and look at coral and algae
in corals at 30 to 40 meters, you see all different kinds of colors - greens and oranges and yellows...
With flu season coming, don't forgetexercise?
...arides derived from the cell wall of yeast, fungi, algae
and oats) have been shown to enhance the activities of both the non-specific and specific immune system but have received little attention in the field of exercise immunology. -Glucan exerts its effects through the direct stimulation of macrophage, n...
How many fish in the sea? Census of Marine Life launches first report
...ht zone are mostly single cell organisms like many algae
and protozoa or krill, miniature relatives of shri...oles, photosynthesis still proceeds as microscopic algae
absorb light transmitted through the ice and feed a spectrum of life from crustaceans to fish to mam...
Don't drink the water: Texas A&M researcher conducting study of polluted Mexican lake
...cessive plant nutrients.There are several forms of algae
in the lake that are actually toxic, so much so that swimming in the lake is highly discouraged. "It's an important lake because people depend on it for water, but the water in it is highly polluted and must be filtered and treated before it can be u...
Northern climate, ecosystems driven by cycles of changing sunlight
... Hu said. Data from biogenic silica (single-celled algae
that reflect lake productivity), North Atlantic sea ice, and baryllium-10 and radiocarbon measures were "strikingly consistent" during the cycles, with the exception of conflicting correlations that occurred in aless-defined cycle that occurred betwe...
'Stop leak' solution found for toxicity problems in experimental gene therapy
...d straightforward," said Yuan, who added that this algae
preparation is a nontoxic biocompatible polysaccharide used in tissue engineering. The researchers suspect that the alginate solution's high viscosity, about 1,000 times higher than water's, may block most of the viruses from leaking out of the tumo...
Cooperation is a no-brainer for symbiotic bacteria
...as in the case of coral bleaching that resultswhen algae
leave or are expelled from the coral....
Lake ecosystem critical to East African food supply is threatened by climate change
... to the surface waters of the lake where they help algae
grow. The algae, which form the base of Lake Tang...ine. Information from the sediments indicated that algae
abundancedeclined 20 percent over the 80-year period for which data exists. The researchers believe...
Helping coral reefs survive climate change
... tourism. Reef-building corals depend on symbiotic algae
to photosynthesize much of their food, and surface...spread the larvae, herbivorous fish that graze the algae
that otherwise grow on top of damaged reefs and prevent the establishment of new corals, and managem...
Rapid evolution helps hunted outwit their predators
...demonstrated with Pac-Man-like creatures and their algae
food in laboratory habitats called chemostats, cou...illustrated with a cover photo of a rotifer-eating algae
and the headline "Fast Food," are Laura E. Jones, a postdoctoral researcher, and Stephen P. Ellner, ...
Finicky snails provide new clues to the evolution of coastal ecosystems
...mpetitor - overgrowing and outcompeting barnacles, algae
and other species for limited space on the shore.'' Earlier studies have shown that sea mussel populations are kept under control by another rapacious predator - the ochre sea star (Pisaster ochraceus). ''The sea star is a keystone species,'' Sanford...
Destination Deadhorse...and beyond
...ng methods and models. Biologists are studying ice algae
and its role in the Artic food web. Several projects are being undertaken as part of the Shelf-Basin Interaction (SBI) program, funded by ONR and the National Science Foundation, which aims to assess climate change in the Arctic. In addition to scien...
Cholestyramine shows protective effects for marine toxin poisoning
...th persistent HAB problems are monitored for toxic algae
in coordination with testing of seafood products. In the near future, forecasting of harmful algal blooms and new biomonitoring and therapeutic methods are anticipated to provide advanced warning capabilities, diagnostics and treatments. Cholestyram...
Worm brings death to coral
... malaria by targeting mosquitoes. Corals depend on algae
inside their bodies to provide carbohydrates and o...are so rich. But when water temperature rises, the algae
either die or the corals eject them in response to the stress of the heat. Before too long the entir...
50 Arctic lakes show dramatic effects of climate warming
... them to collect historic evidence from fossilized algae
in lake bottom sediment, the researchers have foun...ic tundra. For each lake, they compared fossilized algae
preserved in the top, most recent sediment layer with those from the bottom, pre-industrial layer da...
Rock climbing decreases biodiversity
...cross. They live inside soil and many graze on the algae
that grows on the cliffs. Nekola and his colleagues compared the diversity and abundance of snails in climbed and unclimbed cliffs along a two-mile section of the Niagara Escarpment near Milton, Ontario. They studied snail shells in soil collected f...
New studies reveal connections between oceanographic processes and rockfish populations
...h nets towed behind a boat. But if toxin-producing algae
are concentrated in a thin layer, they could go undetected. Fisheries scientists, meanwhile, are especially interested in the influence of major oceanographic events such as El Nio and La Nia on the replenishment of rockfish populations. For at least...
Special section: Invasive species
...vae and other stream invertebrates, increasing the algae
level six times and decreasing the nutrient levels in the water. Moreover, streams with brown trout often do not have native fish. But there is little support for eradicating the brown trout because the sport fishery is so popular, generating more th...
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