News tagged with algal blooms
Japan scientists study oyster 'language'
Scientists in Japan have begun studying the "language" of oysters in an effort to find out what they are saying about their environment.
Dec 06, 2011 |
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The Baltic Sea contributes carbon dioxide to the atmosphere
The Baltic Sea emits more carbon dioxide than it can bind. Local variations have increased the exposure of the Bay of Bothnia. These are the results from a study of how carbon dioxide flows between the water ...
Space & Earth / Earth Sciences
Oct 11, 2011 |
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Toxic red tides: Scientists track neurotoxin-producing algae
which can increase the amount of harmful toxins in the shellfish that California residents consume — ramping up in frequency and severity locally, scientists at USC have developed a new algae monitoring method in hopes ...
Sep 30, 2011 |
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Outsmarting algae -- Scientist finds the turn-off switch
Algaecide is no crime. Consider that some strains of algae produce toxins lethal to wildlife, fish and plants. Even the less harmful varieties suck oxygen out of water, suffocating living creatures in lakes, ponds, pools ...
Sep 13, 2011 |
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Study probes sources of Mississippi River phosphorus
In their eagerness to cut nitrogen and phosphorus pollution in the Mississippi River and Gulf of Mexico, people have often sought simple explanations for the problem: too many large animal operations, for instance, or farmers ...
May 06, 2011 |
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Nothing fishy about sardine kill
Algal bloom specialist David Caron knows exactly what caused the death of 2.5 million sardines at King Harbor and is producing a paper on his research. The city of Redondo Beach gave him and his team a coin ...
Apr 05, 2011 |
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Research uncovers new threat from harmful algae
Harmful algae could be producing substances which affect reproduction in organisms with similar genetic characteristics as humans according to groundbreaking new research.
Mar 03, 2011 |
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Brown tide culprit sequenced: Genome of the first of algal bloom species
Algae play key roles in the global carbon cycle, helping sequester significant amounts of carbon. Some algal species can bloom, or become so numerous, that they discolor coastal waters and reduce the amount ...
Feb 21, 2011 |
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Climate projections show human health impacts possible within 30 years
A panel of scientists speaking today at the annual meeting of the American Association for the Advancement of Science (AAAS) unveiled new research and models demonstrating how climate change could increase ...
Feb 19, 2011 |
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Researchers link algae to harmful estrogen-like compound in water
University of Tennessee, Knoxville, researchers have found that blue-green algae may be responsible for producing an estrogen-like compound in the environment which could disrupt the normal activity of reproductive hormones ...
Feb 16, 2011 |
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ESA's sharp eyes on coastal waters
Our growing reliance on coastal waters for food, trade and tourism means that these delicate ecosystems need to be more closely monitored to guarantee their future sustainability.
Feb 09, 2011 |
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Reducing algal blooms with mining by-products
CSIRO research has shown that some mining by-products can be effective in preventing nutrients from entering river systems, thereby reducing the potential for algal blooms.
Jan 31, 2011 |
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Could oysters be used to clean up Chesapeake Bay?
Chronic water quality problems caused by agricultural and urban runoff, municipal wastewater, and atmospheric deposition from the burning of fossil fuels leads to oxygen depletion, loss of biodiversity, and harmful algal ...
Jan 21, 2011 |
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Forecast system to warn of toxic algal outbreaks along Texas' shoreline
Texas officials and coastal managers will now receive early notice of outbreaks of toxic algae that threaten public health and affect beach and fishing activities along the coast. Weekly bulletins generated ...
Dec 09, 2010 |
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Vitamins identified as key nutrient which may promote harmful algal blooms in coastal waters
(PhysOrg.com) -- Harmful algal blooms, which negatively affect coastal ecosystems, public health, economies and fisheries around the world, may be promoted by vitamins B-1 and B-12 according to Stony Brook University scientists, ...
Dec 02, 2010 |
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Algal bloom
An algal bloom is a rapid increase in the population of algae in an aquatic system. Algal blooms may occur in freshwater as well as marine environments. Typically, only one or a small number of phytoplankton species are involved, and some blooms may be recognized by discoloration of the water resulting from the high density of pigmented cells. Although there is no officially recognized threshold level, algae can be considered to be blooming at concentrations of hundreds to thousands of cells per milliliter, depending on the severity. Algal bloom concentrations may reach millions of cells per milliliter. Algal blooms are often green, but they can also be yellow-brown or red, depending on the species of algae.
Bright green blooms are a result of blue-green algae, which are actually bacteria (cyanobacteria). Blooms may also consist of macroalgal, not phytoplankton, species. These blooms are recognizable by large blades of algae that may wash up onto the shoreline. "Black water" is a dark discoloration of sea water, first described in the Florida Bay in January 2002.
For more information about Algal bloom, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
