Saving Seafood

Can crab and fish in Alaska adapt to more acidic oceans? Scientists aim to find out.

November 1, 2019 — Researchers are looking for ways that crab and fish in Alaska may be able to adapt to more acidic ocean water.

With carbon dioxide levels rising on the planet, ocean water absorbs some of that CO2 and water becomes more acidic. That change is already impacting a variety of sea creatures.

Members of the Alaska Ocean Acidification Network gave an update to Alaska’s Board of Fisheries and a public presentation on the topic in Anchorage in October. The network is a group of researchers, managers, and stakeholders interested in the looming problem.

“It’s not that there hasn’t been variability in the amount of carbon dioxide. It’s not that this hasn’t happened before,” said Robert Foy, director of NOAA Fisheries Alaska Fisheries Science Center. “It’s the speed at which it is happening during our lifetime and whether or not the animals and plants in the ocean are able to adapt fast enough given the speed at which it’s occurring.”

Read the full story Alaska Public Media

Scientists: Southeast Alaska vulnerable to ocean acidification

February 22, 2019 — Southeast Alaska is poised to be among the first regions in the world affected by ocean acidification.

The Alaska Ocean Acidification Network hosted a public presentation Wednesday about the phenomenon that is making ocean water more acidic, and Alaska scientists explained why Southeast is likely to be impacted more quickly than other parts of the world.

Ocean acidification occurs when water absorbs carbon dioxide, which causes the water to become more acidic, and Southeast Alaska waters are uniquely positioned to be particularly susceptible to it, said Jessica Cross, an oceanographer for National Oceanic and Atmospheric Administration’s Alaska Fisheries Science Center.

“There’s a couple of reasons for that,” Cross said. “One of them is glacial discharge. The second reason Southeast Alaska is more vulnerable to ocean acidification than other areas around the state is because of the communities themselves. When we talk about OA risk, we’re very interested in communities that rely on threatened species or threatened marine resources for economic value, cultural perspectives or subsistence food sources.”

Also, Cross said there are a few factors that make the water in the area naturally more acidic.

“I like to say Alaska waters are old and cold,” Cross said after the presentation.

Read the full story at the Juneau Empire