(Credit: University of South Florida) Autonomous USF robot discovered red tide indicators west of Tampa during mapping exercise. (From Herald Tribune/ By Carlos R. Munoz) -- A new batch of red tide could be brewing west of Tampa. A University of South Florida underwater glider, an autonomous robot that collects subsurface data vital to understanding [...]
(Credit: Bob Hogensen, Martin County, Florida) From: Ocean News Weekly/ By: Ocean Leadership Staff What It Was Senate Commerce, Science and Transportation Subcommittee on Oceans, Atmosphere, Fisheries and Coast Guard hearing titled, “Harmful Algal Blooms: The Impact on Our Nation's Waters.” Why It Matters Several areas of the U.S., including the Great [...]
(Credit: Mariana Rius) Tremendous advancement of basic biological knowledge has come from genetically manipulating model organisms to test mechanistic hypotheses. (From Phys.org) -- But the selection of traditional model organisms available offers a limited view of biological diversity, meaning that they cannot be used to investigate a broad swath of novel and [...]
(Credit: AP Photo/ John Minchillo) There's a whole network of satellites, underwater robots and scientific tools watching for toxic algae on Lake Erie. But when it comes to predicting where and when harmful blooms will show up on the Ohio's rivers and reservoirs, there's still a lot of mystery. (From US News/ By [...]
One day in late July, Donglai Gong was piloting his little quadcopter above his house when he noticed his drone camera picking up something odd in the York River below. “There were features, like, streaks of darkness,” Gong recalled Wednesday at the Virginia Institute of Marine Science in Gloucester Point. Gong is an assistant professor studying the physics of coastal and polar oceanography. “And, being a physicist, I had no idea what biological processes could be causing that. So I took some pictures. They looked pretty.”He emailed those pictures to VIMS colleagues, many of whom were biologists who knew exactly what was going on: a harmful algal bloom, or HAB.
Red tides – where seawater appears to turn red due to a high concentration of toxin-producing dinoflagellates – don't happen at random, a study has found, proposing the first method to predict when red tides will occur in southern California.
(Click to enlarge) A plankton bloom in the Bay of Biscay. (Credit: NASA) Our oceans are getting more acidic, and it’s having big effects on some very small animals—with worrying implications. (From Forbes / by Sam Lemonick)– Ocean acidification, a result of excess carbon dioxide in our atmosphere, can disrupt plankton blooms, according to new [...]
In a new study, researchers from North Carolina State University found that a specific neurotoxin can persist and accumulate in "marine snow" formed by the algae Pseudo-nitzschia, and that this marine snow can reach significant depths quickly. These findings have implications for food safety policies in areas affected by toxic marine algal blooms.
Land-use practices on tropical oceanic islands can have large impacts on reef ecosystems, even in the absence of rivers and streams. Land-based pollutants, such as fertilizers and chemicals in wastewater, infiltrate into the groundwaters beneath land and eventually exit into nearshore ecosystems as submarine groundwater discharge (SGD) -- seeping into the coastal zone beneath the ocean's surface. In a study published recently in PLOS ONE, University of Hawai'i at Mānoa (UHM) scientists used a combination of field experiments and chemical analysis of water and algae to show that the quality of coastal groundwater plays a major role in determining the health of nearshore ecosystems in Hawai'i.
Areas of the Arctic play a larger role than previously thought in the global nitrogen cycle -- the process responsible for keeping a critical element necessary for life flowing between the atmosphere, the land and oceans. The finding is reported in a new study of the continental shelf in the Arctic Ocean published in the journal Nature Communications.
The appearance of white blooms of plankton east of New Zealand suggests the ocean is responding to climate change, according to research by Victoria University of Wellington scientists.
A new study finds that unusually warm Pacific Ocean temperatures helped cause a massive bloom of toxic algae last year that closed lucrative fisheries from California to British Columbia and disrupted marine life from seabirds to sea lions.
In snowy places across the globe, “watermelon snow” forms as the summer sun heats up and melts winter’s leftovers. The colorful snow is made up of communities of algae that thrive in freezing temperatures and liquid water, resulting in algal blooms.
After years of study, USF College of Marine Science researchers and colleagues have identified reasons why some years are worse than others for the harmful alga bloom K. brevis, called "red tide," when it occurs off the west coast of Florida.
Toxins from harmful algae are present in Alaskan marine food webs in high enough concentrations to be detected in marine mammals such as whales, walruses, sea lions, seals, porpoises and sea otters, according to new research from NOAA and its federal, state, local and academic partners.
(Click to enlarge) Florida red tide is a harmful algal bloom produced by the dinoflagellate Karenia brevis that causes respiratory impairment in humans and marine life, and is responsible for shellfish poisoning. (Credit: Wikimedia Commons) A new study found that a major ocean current in the Gulf of Mexico plays an important role in [...]
Its name refers to one of the biggest animals in the sea, but ORCA, the Ocean Radiometer for Carbon Assessment instrument, will be observing the smallest.
An analysis of 727 mass die-offs of nearly 2,500 animal species from the past 70 years has found that such events are increasing among birds, fish and marine invertebrates.
The "food" sources that support Florida red tides are more diverse and complex than previously realized, according to five years' worth of research on red tide and nutrients published recently as an entire special edition of the scientific journal Harmful Algae.
Karen McLaughlin normally carries a flashlight for her nighttime kayak trips along Florida’s Banana River to spot any alligators resting on the banks.
Ocean’s Living Carbon Pumps: When Viruses Attack Giant Algal Blooms, Global Carbon Cycles Are Affected
When we talk about global carbon fixation -"pumping" carbon out of the atmosphere and fixing it into organic molecules by photosynthesis -- proper measurement is key to understanding this process.
NOAA and its research partners predict that western Lake Erie will have a significant bloom of cyanobacteria, a toxic blue-green algae, during the 2014 bloom season in late summer.
New research reveals how the algae behind red tide thoroughly disables -- but doesn't kill -- other species of algae. The study shows how chemical signaling between algae can trigger big changes in the marine ecosystem.
NOAA and its research partners predict that the 2013 western Lake Erie harmful algal bloom (HAB) season will have a significant bloom of cyanobacteria
FIRST CALL FOR EXPRESSIONS OF INTEREST: October 2013 (tentative) at FAU Harbor Branch Oceanographic Institute in Fort Pierce, Florida
Algal blooms are nothing new in Lake Erie. Like many others, the lake—the 13th largest in the world, with an area of 25,655 square kilometers—suffered regular bouts of sudden algal growth during the 1960s and 1970s from phosphorous in detergents and agricultural runoff.
New England is expected to experience a “moderate” red tide this spring and summer, report NOAA-funded scientists studying the toxic algae that cause blooms in the Gulf of Maine.
Fish play a far more important role as contributors of nutrients to marine ecosystems than previously thought, according to researchers at the University of Georgia and Florida International University.
Land-Ocean Connections: How Tree Trunks, Leaves and Kukui Nuts Indirectly Feed Bottom Fish in Submarine Canyons Off Moloka’i, Hawaii
Scientists from the School of Ocean and Earth Science and Technology (SOEST) at the University of Hawaii -- Manoa (UHM) and colleagues recently discovered that land-based plant material and coastal macroalgae indirectly support the increased abundances of bottom fish in submarine canyons, like those off the north shore of Moloka'i.
If you could tiptoe through the Middle Cambrian Burgess Shale in the Canadian Rockies 500 million years ago, you'd come across a tulip-shaped sea creature that defies classification.
Clarkson University Biology Professor Michael R. Twiss has been working with colleagues and students from Ohio, Pennsylvania, and Ontario, to study Lake Erie over the past five winters during mid-winter, a time when the lake is more than 70 percent covered by ice.
The acidification of the world's oceans could have major consequences for the marine environment. New research shows that coccoliths, which are an important part of the marine environment, dissolve when seawater acidifies.
Scientists from the NOAA-funded Gulf of Maine Toxicity (GOMTOX) project issued an outlook for a moderate regional bloom of a toxic alga that can cause ‘red tides’ in the spring and summer of this year, potentially threatening the New England shellfish industry.
Sea-ice algae – the important first rung of the food web each spring in places like the Arctic Ocean – can engineer ice to its advantage, according to the first published findings about this ability.
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 of light and oxygen available in the ecosystem.
Adding particles to liquids to make currents visible is a common practice in the study of fluid mechanics, one that was adopted and perfected by artist Paul Matisse in sculptures he calls Kalliroscopes.
Scientists are reporting for the first time that previously unrecognized substances released by algae blooms have the potential to act as endocrine disruptors, which can interfere with the normal activity of reproductive hormones.
University of British Columbia researchers have uncovered the unique survival mechanisms of a marine organism that may be tiny, but in some ways has surpassed sharks in its predatory efficiency.
Researchers in biologist Don Anderson’s lab are celebrating a new arrival—a gleaming, 3-foot-high robotic instrument that promises to revolutionize how scientists detect and study the ocean’s tiny but troublesome inhabitants: harmful algae.
Louisiana State University's Sibel Bargu, along with her former graduate student Ana Garcia, from the Department of Oceanography and Coastal Sciences in LSU's School of the Coast & Environment, has discovered toxic algae in vast, remote regions of the open ocean for the first time.