SAN FRANCISCO, Jan. 9 (Xinhua) -- Researchers have identified a strong correlation between toxic levels of domoic acid in shellfish and the warm-water ocean conditions orchestrated by two powerful forces, namely El Niño events and the Pacific Decadal Oscillation.
In addition, researchers from Oregon State University (OSU), the University of Oregon, the National Oceanic and Atmospheric Association (NOAA), and the Oregon Department of Fish and Wildlife have developed a new model to predict with some accuracy the timing of domoic acid risks in the U.S. Pacific Northwest.
The findings were published Monday in Proceedings of the National Academy of Sciences.
Domoic acid, a potent neurotoxin produced by specific types of phytoplankton and ingested by shellfish, can cause serious health effects in humans and some other animals. In recent years, dangerous levels of these toxins have led to the repeated closure of crab and shellfish harvesting in the Pacific Northwest and elsewhere.
Until now, while the problem threatens public health, marine wildlife and inflicts huge costs for coastal economies, its connection to larger climatic forces has been suspected, but not confirmed.
"In the natural world there are always variations, and it's been difficult to connect a specific event to larger forces that operate over periods of years and decades," said Angelicque White, an associate professor and research team leader in the OSU College of Earth, Oceanic and Atmospheric Sciences. "To do so, long observational time-series are crucial. With NOAA's commitment to sponsored coastal ocean research and monitoring, along with state support for monitoring shellfish toxins, we've finally been able to tease out short term variability from natural climate forcing."
【国际英语资讯:Correlation identified between domoic acid shellfish toxicity and warm-water ocean conditions】相关文章:
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