News tagged with algal blooms
Robot monitors toxic red tides
A robotic device suspended under the ocean surface from a buoy off the New Hampshire coast is monitoring seawater for evidence of the red tide, clusters of microscopic plants that release toxins into fish ...
May 24, 2012 |
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Common fungicide wreaks havoc on freshwater ecosystems
Chlorothalonil, one of the world's most common fungicides used pervasively on food crops and golf courses, was lethal to a wide variety of freshwater organisms in a new study, University of South Florida researchers said ...
May 16, 2012 |
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Nutrient supply after algal bloom determines the succession of the bacterial population
Algal blooms can considerably interfere with summer holidays by the sea. In the coastal zone of temperate regions a spring algal bloom is not a sign of excessive nutrient input, but most of all a consequence ...
May 04, 2012 |
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Cod has a key role in the whole Baltic Sea
A new investigation put in evidence the key role of cod as regulator of the whole Baltic Sea ecosystem. The study shows that when the cod population in the central Baltic increases, it spreads into larger ...
Apr 18, 2012 |
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New methods for better purification of wastewater
Before wastewater reaches recipient waters, nutrients must be removed in order to avoid eutrophication and large algal blooms, which may result in serious damage to animal and plant life. Robert Almstrand at the University ...
Mar 05, 2012 |
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Climate change causes harmful algal blooms in North Atlantic: study
Warming oceans and increases in windiness could be causing of an abundance of harmful algal blooms in the North Atlantic Ocean and North Sea, according to new research.
Feb 13, 2012 |
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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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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.
