Scientists have collected samples from algaeblooms found during an inspection of Lake Taupō swimming sites this weekend.
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Although red and orange algaeblooms have also been seen on Antarctica, this was not documented in the study.
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High concentrations of chemicals in rivers can contribute to changes in aquatic plant and fish life, including fish kills and algaeblooms.
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Mere pond scum morphs into algaeblooms weighing tons, which suck so much oxygen from freshwater that everything swimming in it dies.
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The use of nitrogen -which is needed for fertilizer, but causes oxygen-chokingalgaeblooms -is nearly four times higher than recommended.
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We've done better with Erie because of its size, and we have short-term algaeblooms and some small areas of water weed re-establishing.
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Toxic algaeblooms have been a growing problem in the Pacific Northwest during the past several years, a trend scientists attribute to warming waters.
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Satellite pictures showed a steadily climbing percentage of greenery all across the five continents, and further massive algaeblooms had appeared in the oceans.
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Toxic algaeblooms are common in polluted waterways around the country, particulalry in summer, and algae mats can be fatal to dogs, if eaten.
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The frequent harmful algaeblooms (HABs) in eutrophic waters pose serious threats to the water environment and health of human beings and animals.
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Toxic algaeblooms have been a growing problem in the U.S. Pacific Northwest during the past several years, a trend scientists attribute to warming waters.
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You can listen to an earlier Our Changing World interview about a trial using a UAV to monitor toxic algaeblooms from the air here.