SOARCE ARCHIVE

Researching the Impact of Ocean Acidification on Atlantic Silversides

Researching the Impact of Ocean Acidification on Atlantic Silversides

Northeast Fisheries Science Center

Scientists and NOAA Hollings scholars at the Northeast Fisheries Science Center (NEFSC) are studying how Atlantic silverside, one of the most common fishes on the Atlantic Coast and an important diet component of many larger fishes of this region, are impacted by changes in ocean acidification (increased CO2, lower pH), increased temperature, and lower dissolved oxygen projected to occur in the future. The team is exposing silverside embryos and larvae to these three stressors and monitoring effects on survival, hatching time, and size of the fish larvae at hatching and later in life. In addition, they are mimicking day-night cycles in CO2 by oscillating the CO2 levels every 12 hours and assessing how the magnitude of these fluctuations impact young silverside. This will help scientists better predict how future ocean conditions could alter this important food source.

Pictures: 1. 2017 Hollings Scholar Amy Zyck monitoring young Atlantic silverside in the CO2 and dissolved oxygen experiment at the NOAA Sandy Hook Laboratory.


Wednesday, January 24, 2018
Ocean Acidification means major changes for California mussels

Ocean Acidification means major changes for California mussels

Florida State University News

For thousands of years, California mussel shells have shared a relatively uniform mineralogical makeup — long, cylindrical calcite crystals ordered in neat vertical rows with crisp, geometric regularity. But in a study published this week in the journal Global Change BiologyMcCoy and her team suggest that escalating rates of ocean acidification are shaking up that shell mineralogy on its most basic structural levels. “What we’ve seen in more recent shells is that the crystals are small and disoriented,” said Assistant Professor of Biological Science Sophie McCoy, who led the study. “These are significant changes in how these animals produce their shells that can be tied to a shifting ocean chemistry.” “When the mussels are ready to build their shells, they first lay down an amorphous soup of calcium carbonate, which they later order and organize,” McCoy said. “More recent shells have just started heaping that calcium carbonate soup where it needs to go and then leaving it there disordered.” The team also found that recent shells exhibited elevated levels of magnesium — a sign that the process of shell formation has been disrupted.

Find the full article here

Photo: Sophie McCoy.

Monday, January 8, 2018
Latest Science Updates to the 2012 WA State Blue Ribbon Panel Report

Latest Science Updates to the 2012 WA State Blue Ribbon Panel Report

Marine Resources Advisory Council

The Washington state governor’s appointed board, the Marine Resources Advisory Council, released its first update in five years to the state’s coordinated response to ocean acidification. In the five years since the Blue Ribbon Panel’s report, there have been significant scientific advances and progress made on the 42 recommended actions. The report highlights the new research that justifies more concerted efforts to combat ocean acidification. The report is publicly available here

Eleven NOAA and Washington Sea Grant scientists from the National Ocean Service, National Marine Fisheries Service and the Office of Oceanic and Atmospheric Research served on the Blue Ribbon “Refresh” Panel and contributed to the report.

Photo Credit: NW Straits Commission

Wednesday, December 20, 2017

Future Park Leaders of Emerging Change

National Park Service

The National Park Service (NPS) is pleased to support the Future Park Leaders of Emerging Change (FPL) program as a pathway for exemplary students in higher education (advanced undergraduate students, graduate students, and recent graduates) to apply their skills and ideas to park-based challenges and solutions. One Position is to "Develop an Ocean Acidification Action Toolkit for Our National Parks" at the Olympic National Park .

The Initiative offers 12-week paid internships which allow students to gain valuable work experience, explore career options, and develop leadership skills through mentorship and guidance while helping to advance NPS efforts on emerging management issues. Successful students may be eligible for non-competitive hire into federal positions for which they qualify following completion of all academic requirements. For more information visit the future park leaders website


Monday, December 11, 2017
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Oysters on acid: How the ocean's declining pH will change the way we eat

Oysters on acid: How the ocean's declining pH will change the way we eat

The New Food Economy

The ocean is changing faster than it has in the last 66 million years. Now, Oregon oysters are being farmed in Hawaii. That fix won’t work forever. 

A little more than ten years ago, a mysterious epidemic wiped out baby oyster populations. After two years of massive losses and no answers, scientists testing the waters discovered what was really wrong: the ocean water flowing into the hatcheries had changed, and the oysters weren’t able to build their shells. 

Check out the full article by H. Claire Brown, The New Food Economy, 28 November 2017.

Saturday, December 2, 2017
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