"To date, no evidence of blue green algae has been reported at the adjacent identified bathing water sites to Portrush Harbour and Portstewart Harbour.
"Better to keep people safe and get back to it when the time is right."Īnyone seeing anything they suspect might be blue-green algae is urged to report it using the Bloomin' Algae reporting app.Ī DAERA spokesperson said: "The presence of blue green algae is being investigated at Portrush Harbour and Portstewart Harbour.
"They've been very good at monitoring the situation and updating us," he said. Mr Nelson praised the Department of Agriculture, Environment and Rural Affairs' (DAERA) response to the situation. "We're trying to stay positive and are hoping it's only a matter of a day or two," he said. George Nelson, owner of Babushka cafe, which overlooks Portrush harbour, said he was glad to see a response to the potential health threat. A toxic algae called Heterosigma akashiwo is blooming in San Francisco Bay, causing the water to look murky and brown and posing a danger to local marine life. Both algal blooms are likely being further. The human illnesses caused by HABs, though rare, can be debilitating or even fatal. Invasive species like zebra mussels also contribute to the problem by cleaning the water, allowing sunlight to penetrate more deeply and stimulate algal growth. These cyanobacteria may be fueling the coastal red tide because their decaying bodies release nutrients that feed the red tide-causing dinoflagellates. Harmful algal blooms, or HABs, occur when colonies of algaeplant-like organisms that live in the sea and freshwatergrow out of control while producing toxic or harmful effects on people, fish, shellfish, marine mammals, and birds. "The surf has been terrible for months but today was the best it's been all summer," he told BBC News NI on Friday.Īlgal blooms are caused by water pollution and certain weather conditions. Mr Hill, who also operates a surf school and equipment rental service, said both were forced to close. 'So frustrating'Īndy Hill, owner of Troggs Surf Shop, near East Strand beach, said the warning has had a serious impact on trade. A computer generated-simulation allowed researchers to see how a toxin produced by algal blooms in saltwater might cause Amyotrophic Lateral Sclerosis (ALS). (AI)-based algorithms for detection of harmful bloom-forming algae: an eco-environmental approach. It cannot survive in saltwater but there is a concern that clumps of it may wash up on the shore. Toxic algal blooms and red tides: a global perspective. Natural tidal movement will disperse it along the coastline. He also found evidence the destructive brown tide species Aureococcus anophagefferens and Aureoumbra lagunensis self-manipulate the pH, oxygen, and CO 2 levels in their surrounding environment to promote their blooms at the expense of benign phytoplankton.The algae had washed down the Lower Bann River from Lough Neagh, where it is present in levels not seen since the 1970s. In Florida, red tide is caused by an accumulation of the microscopic algae, Karenia brevis (Figure 1), a naturally occurring organism found throughout the Gulf of Mexico, occasionally on the east coast of Florida. Gobler's NCCOS-sponsored research shows that nutrient loading and acidification promote growth and increased toxicity of the red tide algal species Alexandrium fundyense. Red tide is a conversational term used to describe a particular type of harmful algal bloom. The term 'red tide' is derived from blooms of any of several species of dinoflagellate, such as Karenia brevis. Christopher Gobler of Stony Brook University spoke on the often overlooked feedback and outcomes of acidifying sea water, high nutrients, and low oxygen levels. Harmful algal bloom in coastal areas are also often referred to as 'red tides'. The decay of these coastal blooms promotes bacterial respiration resulting in increased CO 2, lower pH, and low oxygen conditions.Īt the recent 7 th Symposium on Harmful Algal Blooms in the U.S., Dr. Also well documented are increased nutrients entering coastal waters often promoting excessive and ecosystem disruptive algae blooms, including harmful algal blooms. The general decline in ocean pH (i.e., more acidic conditions) from the increasing concentrations of carbon dioxide (CO 2) is well documented.
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