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Harmful Algal Cyst Sampling Lays Groundwork for 2017 Gulf of Maine Forecast

Scientists from NOAA and Woods Hole Oceanographic Institution (WHOI) recently completed their annual harmful algal cyst sampling in the Gulf of Maine, a critical step for forecasting next year’s harmful algal blooms (HABs) of the toxic Alexandrium fundyense, commonly known as New England red tide. A. fundyense has both a vegetative stage, where cells grow and float in surface […]

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Predicting the Risks of Harmful Algal Blooms for Coastal California

In California, domoic acid-producing harmful algal blooms (HABs) of the diatom Pseudo-nitzschia increasingly threaten bivalve and crab harvesters, aquaculture, and coastal ecosystems. Using a blend of models and satellite ocean color imagery, NCCOS supported the early development of the California Harmful Algae Risk Mapping (C-HARM) system that predicted the spatial likelihood of Pseudo-nitzchia blooms and levels of […]

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Tiny yet Toxic: Dinoflagellate Karlodinium veneficum

Relatively unknown and taxonomically confusing until the last few decades, the tiny but toxic dinoflagellate, Karlodinium veneficum, can produce dense blooms and fish-killing toxins. K. veneficum is a small chlorophyll-containing dinoflagellate that produces a suite of potent toxic compounds known as karlotoxins which kill fish as well as other organisms. K. veneficum has a mixed nutritional mode […]

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Mesophotic Bicolor Damselfish Help Keep Shallower Reef Populations Afloat

NOAA-supported researchers studying the potential coral ecosystem connectivity of the deep (192-256 ft/60-80 m), mesophotic reefs of Pulley Ridge and the shallower reefs downstream in the Florida Keys found that bicolor damselfish populations on shallower reefs may owe some of their sustainability to mesophotic reefs. In comparison to shallower reefs, the bicolor damselfish populations on mesophotic […]

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Shellfish Larvae Struggle in Fluctuating Oxygen and Acidity in Estuaries

A study supported by NCCOS and the NOAA Ocean Acidification Program found that interacting effects of acidified and low oxygen (hypoxic) waters reduced the survival, growth, and development of larval stages of three important shellfish species: bay scallops, hard clams and eastern oysters. Shellfish larvae were exposed to ideal, acidified and low oxygen conditions both individually and in […]

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NCCOS Helps New England Respond to Unprecedented Harmful Algal Bloom

For the first time in New England’s coastal waters, shellfish have exceeded the regulatory limit for domoic acid—a potent neurotoxin produced by the diatom Pseudo-nitzschia. Domoic acid accumulates in shellfish that feed on Pseudo-nitzschia, and can lead to amnesic shellfish poisoning in people who consume tainted shellfish. The NCCOS Harmful Algal Bloom Event Response Program […]

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New Eco-Forecast Systems to Aid Pacific Northwest Seafood Industry

Harmful algal blooms (HABs) along the coasts of Washington and Oregon cause millions of dollars in economic losses due to HAB-toxin contaminated shellfish. On October 3, the office of Washington Governor Jay Inslee gathered the Washington Shellfish Initiative Advisory Group for a public meeting in Aberdeen, Washington. This twice-annual meeting provides a forum for members […]

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Studying the Impacts of Sea Level Rise on Hawai’i Habitats

An NCCOS-funded Ecological Effects of Sea level Rise (EESLR) project led by The Nature Conservancy (TNC) on the Big Island of Hawai‘i is working to understand and predict the effect of sea-level rise on unique and historic Hawaiian groundwater-fed  pools, wetlands, and fishponds. On September 7, scientists joined local stakeholders at a Change Tool Development Workshop and […]

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