News and features _ risk of toxic shellfish on west coast increases with water temperature – news and features

Posted on January 19th, 2017 (2 days ago) in Changing Temperature & Hydrology, Climate Impacts, Coastal Resilience, Ecological Forecasts & Tools, Ecosystem Management, Forecasting, HABHRCA, Harmful Algal Blooms, Monitoring & Event Response, Sponsored Research

High levels of domoic acid, a shellfish toxin, are correlated with warmer ocean temperatures offshore of Oregon and Washington. Database programmer NCCOS-supported research team led by scientists from Oregon State University found an association between domoic acid levels in shellfish and climate-scale warm ocean conditions that gives a unique, large-scale perspective relative to previous work. Data recovery osx The strong connection with anomalously warm ocean conditions, announced by NOAA last week, has implications for greater outbreak occurrence as oceans continue to warm due to climate change.

The team also produced a climate-based model, which predicts the time and location of domoic acid levels in Oregon and Washington shellfish that could exceed public safety limits.


Database integrity This tool, along with the study’s findings, are expected to lead to enhanced West Coast HAB forecasting and will enable targeted fishery closures and openings to avoid economic distress while protecting public health.

These findings came out of a first of its kind Oregon HAB monitoring and research pilot project aimed at demonstrating a viable strategy to address state, regional, and NOAA research and management needs. Database backup The NCCOS-sponsored Monitoring Oregon Coastal Harmful Algae (MOCHA) project was Oregon’s first coastal HAB monitoring and research program.

The 5-year project (2007-2012) funded by NOAA MERHAB collected the first extensive time series database of the Oregon coast’s biological, chemical, and physical variables in both the surf zone and offshore habitat over a variety of sampling scales; scientific data necessary to describe both HAB occurrence in Oregon and the underlying ecological mechanisms to inform future HAB monitoring and forecasting.

HAB events in Oregon along the West Coast are increasing in frequency, duration, and intensity and are increasingly threatening to coastal economies, ecosystems, and public health. Hollywood u database Two of the major algal toxins of interest along the West Coast are domoic acid (DA), produced by some species of the diatom algal genus Pseudo-nitzschia, and saxitoxins (STX) that are produced by certain dinoflagellate algae, including some species of Alexandrium. Data recovery ipad Prior to the MOCHA project, these toxins and algae had been understudied along the Oregon coast in comparison to other West Coast states.

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