Articles tagged with Red Tides
According to a new paper, large quantities of phosphorus in oceans led to vast algal blooms, pumping oxygen into the environment, allowing larger organisms to thrive. This oxygenation had major consequences for the evolution of complex life and may have played a key role in creating an oxygenated atmosphere.
A large 'red tide' is expected in the New England region this spring, posing a threat to the local shellfish industry. The prediction is based on a higher-than-usual abundance of cysts from the toxic alga Alexandrium fundyense on the seafloor.
An abundant seed population in bottom sediments has set the stage for a significant regional bloom of toxic alga Alexandrium fundyense. A computer model developed by scientists can predict the intensity and location of blooms, but weather events cannot be forecasted months in advance.
A QUT team is studying how iron from soil reaches water to potentially cause algal blooms. Researchers are investigating the role of bacteria and chemical reactions in making iron soluble.
Aggressive algae injure and kill competitors to gain access to their cells' nutrients, similar to blood-sucking insects. This behavior may be a key mechanism in the formation of toxic plankton blooms.
Researchers predict a moderately large red tide outbreak in the Gulf of Maine this spring and summer, with toxicity levels expected to be smaller than last year's bloom. The potential for an extensive outbreak depends on weather events and oceanographic conditions, making it difficult to make precise predictions.
A massive 'red tide' bloom caused seabirds to lose their waterproof insulation, leading to hypothermia and starvation. Researchers found a surfactant in the foam that stripped the birds' feathers of their natural oils.
Scientists at MIT explain how thin layers of single-celled organisms form at sea and can trap phytoplankton, leading to harmful algal blooms. This research brings the scientific community closer to predicting these events and has implications for other ecological phenomena.
A new study identifies a hotspot for toxic harmful algal blooms (HABS) in the Strait of Juan de Fuca, which can trigger blooms and force shellfish bed closures. The research aims to provide early warnings to protect human health and reduce economic losses due to biotoxin accumulation.
A 'hot spot' for toxic harmful algal blooms has been discovered off the Washington coast, where microorganisms can trigger harmful blooms that force shellfish bed closures.
International experts cite nutrient pollution as a major force behind increased harmful algal bloom events. The University of Maryland Center for Environmental Science presents a compilation of research highlighting the role of nutrient pollution in driving these events.
A DNA test can detect harmful algal blooms across the globe, reducing economic impact on fisheries, recreational activities, and aquaculture sites. Factors such as climate change and pollution contribute to algal bloom occurrences.
Scientists have discovered a diatom that can reduce the toxicity of red tide algae to both animals and other algae, potentially mitigating economic damage to the seafood and tourism industries. The research suggests that the diatom may degrade or neutralize the toxins produced by the red tide, offering new hope for reducing its impact.
NOAA researchers discovered that inhaled brevetoxins from red tides can damage DNA and attach to genetic code, potentially leading to cancer. Long-term exposure could add to cumulative DNA damage, increasing cancer risk.
Dennis J. McGillicuddy, Jr., a pioneer in physical-biological interactions, is recognized for his groundbreaking studies of plankton and ocean currents. His research has significantly impacted the global carbon cycle and marine ecosystem productivity.
Researchers at MIT have developed an elegant method to synthesize the lethal components of red tides, shedding light on how algae generate these toxins. The breakthrough could help scientists prevent red tide outbreaks and accelerate the development of cystic fibrosis treatments.
Researchers found that Florida red tide toxins can impact respiratory function and increase respiratory symptoms in patients with asthma. The study suggests that coastal residents may react less to the toxins due to prior environmental exposure.
Dr. Mara Diaz, a University of Miami Rosenstiel School researcher, is working on a project to develop a rapid detection tool for harmful algal blooms. The goal is to enable early warning systems and improve public health and regional economies affected by these toxic blooms.
Scientists believe that high runoff from hurricanes in 2004 contributed to the development of extensive and long-lasting red tides off west-central Florida. Groundwater discharge is thought to provide the necessary nutrients for these blooms, explaining their persistence and frequent occurrence in the region.
A recent study suggests a connection between red tide toxins and human respiratory problems, as well as manatee fatalities, highlighting the need for greater awareness of the impacts of brevetoxins on both humans and marine life.
A team of scientists found that a small mutation in softshell clams' nerve tissue prevents paralytic shellfish toxins from binding, causing the clams to accumulate high levels of toxins. This resistance allows them to survive harmful algal blooms and increase the risk of paralytic shellfish poisoning in humans.
A new study by Stanford University scientists presents direct evidence linking large-scale coastal farming to massive algal blooms in the sea. Highly productive regions of the ocean are found to be more vulnerable to agricultural runoff than assumed.
Agricultural runoff from Mexico's Yaqui River Valley has been found to directly trigger massive algal blooms in the Sea of Cortez, potentially harming ocean life and fisheries. The study, published at the AGU meeting, provides evidence of a one-to-one correspondence between irrigation events and algal blooms.
Researchers discovered two compounds that block red tide toxin effects on respiratory systems, showing promise in treating cystic fibrosis. The compounds improved mucus clearance and may work at concentrations without side effects.
Researchers used NASA's MODIS instruments to study dark water patches off the Florida coast, detecting glowing phytoplankton blooms. The findings suggest a connection between rivers and the ocean ecosystem, highlighting the need for coordinated efforts to mitigate black water events.
A recent study published in Ecology Letters found that increased atmospheric carbon dioxide can lead to a significant increase in algal productivity, with up to 40% to 50% more growth in nutrient-rich environments. This could result in more severe nuisance blooms, particularly in freshwater and saltwater systems.
A 2002 NASA study found a significant decline in coral cover and species diversity after the 'black water' event, which was caused by a bloom of microscopic marine plants. The dark water reduced sunlight absorption, affecting the ecosystem.
Biologists have found that viruses can destroy entire algal blooms within days, particularly when nutrients are depleted. Free-living cells are highly susceptible to viruses, which break down the cell content and dissolve it in seawater.
Researchers will analyze data to predict and control harmful algal blooms and red tides in Narragansett Bay, affecting marine life and local aquaculture. The study aims to enhance understanding of bay ecology needed for effective management and use of resources.
Campbell and co-investigator John Gold aim to pinpoint geographic points of origin for toxic algae using hypervariable DNA markers. They hope to predict when and where red tides may occur along the Texas coast by analyzing genetic diversity within bloom populations.
A new Gulf buoy network is being developed to detect harmful algal blooms, also known as red tides, which can cause fish kills and human illnesses. The system uses FlowCAM technology, which will provide continuous monitoring of water column images, allowing for early warning and prediction of deadly red tides.
A new study found that Saharan dust clouds traveling thousands of miles can lead to massive toxic algae blooms in the Gulf of Mexico. The research used satellite and ground-based measurements to track dust clouds, which increased iron concentrations by 300% and triggered a huge bloom of toxic red algae.
Research suggests that urea from urban and agricultural runoff may trigger or sustain harmful algal blooms found off California's coast. The study found that a specific type of algae, Lingulodinium polyedrum, prefers urea over other nutrients.