Present day and future habitat maps for Alexandrium in Puget Sound (ECOHAB: Puget Sound Alexandrium Harmful Algal Blooms)

Description

PS-AHAB (Puget Sound Alexandrium Harmful Algal Blooms) is a component of the NOAA ECOHAB program, focused on modeling favorable habitat areas for Alexandrium catenella in Puget Sound and evaluating the effects of climate change. The dinoflagellate Alexandrium catenella produces a suite of potent neurotoxins, collectively known as paralytic shellfish toxins (PSTs), which accumulate in shellfish and cause severe illness or death if contaminated shellfish are consumed by humans. Alexandrium catenella form dormant cysts that overwinter on the seafloor and provide the inoculum for toxic blooms the following summer when conditions become favorable again for growth of the motile cell. A 2005 survey of A. catenella cyst distribution in Puget Sound, Washington, identified seedbeds with high cyst abundances that correspond to areas where shellfish frequently attain high levels of toxin. However, even at these sites, interannual variability in the magnitude of toxic events is high. In order to provide advanced warning of A. catenella blooms, managers need to know how much seed is available to initiate blooms, where this seed is located, when/where this seed could germinate and grow, and how these factors could be altered by future climate change. Climate change impacts were assessed using present day and future maps of favorable habitat areas in Puget Sound, based on knowledge of growth rates for different temperature and salinity conditions. Present day maps will be based on hindcasts of oceanographic conditions in Puget Sound during a typical year, and future habitat maps will be created using downscaled climate change scenarios for the Pacific Northwest.

General Information

• This data is described at

  http://catalog.data.gov/dataset/present-day-and-future-habitat-maps-for-alexandrium-in-puget-sound-ecohab-puget-sound-alexandri Do you think this data is incorrect? Let us know

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