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Oceanic Continental Margin Dead Zones Emerge as Threats to Coastal Waters

Declines in oxygen levels of coastal waters have accelerated in recent decades creating “dead zones” not only in more publicized nearshore areas but in open ocean offshore regions of the continental shelves and slopes. Once treated as separate phenomena and distinct fields of study, scientists now see offshore and coastal hypoxia as interconnected, resulting in […]

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Sensor Provides Early Warning of Toxic Algal Bloom in Offshore Waters of Monterey Bay

NCCOS-developed domoic acid sensors on board two Environmental Sample Processors (ESPs) deployed in Monterey Bay, California have provided early warning of a toxic Pseudo-nitzschia algal bloom. Only a week into the deployment that began in early May, particulate domoic acid levels exceeded 30 micrograms per liter of seawater, which was consistent with the ESPs also detecting very high concentrations […]

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‘Most Notable Paper’ Awarded to NCCOS Project

A team of researchers funded by NCCOS recently won the 2015 Chandler-Misener Award for the most notable paper published in the Journal of Great Lakes Research (JGLR). The paper, “Assessing and addressing the re-eutrophication of Lake Erie: Central basin hypoxia,” synthesizes results from a long-term NCCOS project examining the causes and consequences of hypoxia (low oxygen) […]

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Model Allows Scallop Industry to Plan for Impacts of Climate Change

NCCOS-sponsored researchers have developed a user-friendly computer program to help manage the U.S. commercial Atlantic sea scallop fishery, which is threatened by progressively higher temperatures and ocean acidification. The Integrated Assessment Model (IAM) concurrently simulates ocean conditions related to temperature and ocean acidification, sea scallop population dynamics, and economic impacts on the scallop fishery. In the […]

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Harmful Algal Cyst Mapping in Washington Shows 10-fold Increase since 2013

An unprecedented bloom of the harmful alga Alexandrium occurred during Fall 2014 in Quilcene Bay, Hood Canal, Puget Sound, WA; the outbreak contaminated shellfish with potent biotoxins that can cause paralytic shellfish poisoning. The area of the bloom was historically biotoxin free, but at the peak of the event, the Washington State Department of Health detected toxin […]

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New Recruits Comprise most of Coral Area Found in 2014

A completed analysis from the 2014 expedition to Pulley Ridge based on remotely operated vehicle (ROV) observations revealed significant areas of new coral growth. The findings were compiled from a total of 24 ROV dives to characterize the mesophotic coral reef ecosystems off the southwest coast of Florida and the Tortugas, and determined over 56.5 percent […]

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NCCOS Leads Efforts to Prioritize Cyanobacterial Harmful Algal Bloom Research

In 2014 access to drinking water in Toledo, Ohio was shut down due to cyanobacterial harmful algal bloom (HAB) toxins from Lake Erie. The National Science Foundation and NOAA responded with a workshop,“Global Solutions to Regional Problems: Collecting Global Expertise to Address the Problem of Harmful Algal Blooms,” at Bowling Green State University, Bowling Green, OH, April 13-14, […]

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