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Harmful algal blooms can be lethal for humans; scientists wonder if they cause seabird die-offs too

Harmful Algal Blooms Can Be Lethal For Humans Scientists Wonder If They Cause Seabird Die-offs Too

Credit Courtesy of Elizabeth Mears    Paralytic shellfish poisoning, caused by eating seafood contaminated with toxins from harmful algal blooms, can be deadly to humans. Now, using marine samples from Unalaska, scientists are trying to understand if those harmful algal blooms could also be responsible for seabird die-offs. There s not much data on how saxitoxin a harmful compound produced by algal blooms that cause PSP  spreads through the larger food web. But in July, a group of biologists with the United States Geological Survey visited Unalaska to collect samples of plants and animals in hopes of learning more about how saxitoxin levels magnify and diminish as they move through the food chain, from phytoplankton to mussels and up to seabirds.

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